./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 13967880 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.extract-columns-1396788-m [2024-02-02 16:08:44,191 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-02 16:08:44,256 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-02 16:08:44,262 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-02 16:08:44,263 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-02 16:08:44,333 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-02 16:08:44,334 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-02 16:08:44,334 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-02 16:08:44,335 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-02 16:08:44,339 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-02 16:08:44,340 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-02 16:08:44,340 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-02 16:08:44,341 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-02 16:08:44,342 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-02 16:08:44,342 INFO L153 SettingsManager]: * Use SBE=true [2024-02-02 16:08:44,343 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-02 16:08:44,343 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-02 16:08:44,343 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-02 16:08:44,343 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-02 16:08:44,343 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-02 16:08:44,344 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-02 16:08:44,344 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-02 16:08:44,344 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-02 16:08:44,344 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-02 16:08:44,345 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-02 16:08:44,345 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-02 16:08:44,345 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-02 16:08:44,345 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-02 16:08:44,346 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-02 16:08:44,346 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-02 16:08:44,347 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-02 16:08:44,347 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-02 16:08:44,347 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 16:08:44,347 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-02 16:08:44,347 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-02 16:08:44,348 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-02 16:08:44,348 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-02 16:08:44,348 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-02 16:08:44,348 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-02 16:08:44,348 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-02 16:08:44,348 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-02 16:08:44,349 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-02 16:08:44,349 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-02 16:08:44,349 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-02 16:08:44,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-02 16:08:44,577 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-02 16:08:44,579 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-02 16:08:44,580 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-02 16:08:44,581 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-02 16:08:44,581 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml [2024-02-02 16:08:44,814 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-02 16:08:44,815 INFO L274 PluginConnector]: CDTParser initialized [2024-02-02 16:08:44,816 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-02-02 16:08:45,911 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-02 16:08:46,115 INFO L384 CDTParser]: Found 1 translation units. [2024-02-02 16:08:46,116 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-02-02 16:08:46,130 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1c543a82/5072d9c04e454c9b97511da17e85868d/FLAG27e310ae1 [2024-02-02 16:08:46,141 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1c543a82/5072d9c04e454c9b97511da17e85868d [2024-02-02 16:08:46,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-02 16:08:46,147 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-02 16:08:46,148 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-02 16:08:46,148 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-02 16:08:46,152 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-02 16:08:46,153 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 04:08:44" (1/2) ... [2024-02-02 16:08:46,154 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b8aa8a4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 04:08:46, skipping insertion in model container [2024-02-02 16:08:46,154 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 04:08:44" (1/2) ... [2024-02-02 16:08:46,156 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@16799b1a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 04:08:46, skipping insertion in model container [2024-02-02 16:08:46,157 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 04:08:46" (2/2) ... [2024-02-02 16:08:46,157 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b8aa8a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 04:08:46, skipping insertion in model container [2024-02-02 16:08:46,157 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 04:08:46" (2/2) ... [2024-02-02 16:08:46,158 INFO L86 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-02 16:08:46,397 INFO L99 nessWitnessExtractor]: Found the following entries in the witness: [2024-02-02 16:08:46,398 INFO L101 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 0 [2024-02-02 16:08:46,398 INFO L101 nessWitnessExtractor]: Location invariant before [L747-L747] (unsigned long )arg == 0UL [2024-02-02 16:08:46,398 INFO L101 nessWitnessExtractor]: Location invariant before [L721-L721] (unsigned long )arg == 0UL [2024-02-02 16:08:46,398 INFO L101 nessWitnessExtractor]: Location invariant before [L731-L731] (((((((((((((((0 <= __unbuffered_p0_EAX) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (1 <= __unbuffered_cnt)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-02 16:08:46,398 INFO L101 nessWitnessExtractor]: Location invariant before [L18-L18] expression == 1 [2024-02-02 16:08:46,399 INFO L101 nessWitnessExtractor]: Location invariant before [L740-L740] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-02 16:08:46,399 INFO L101 nessWitnessExtractor]: Location invariant before [L772-L772] ((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-02 16:08:46,399 INFO L101 nessWitnessExtractor]: Location invariant before [L742-L742] (unsigned long )arg == 0UL [2024-02-02 16:08:46,399 INFO L101 nessWitnessExtractor]: Location invariant before [L18-L18] expression == 0 [2024-02-02 16:08:46,399 INFO L101 nessWitnessExtractor]: Location invariant before [L737-L737] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-02 16:08:46,399 INFO L101 nessWitnessExtractor]: Location invariant before [L736-L736] (unsigned long )arg == 0UL [2024-02-02 16:08:46,399 INFO L101 nessWitnessExtractor]: Location invariant before [L744-L744] (unsigned long )arg == 0UL [2024-02-02 16:08:46,400 INFO L101 nessWitnessExtractor]: Location invariant before [L727-L727] (unsigned long )arg == 0UL [2024-02-02 16:08:46,400 INFO L101 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 1 [2024-02-02 16:08:46,400 INFO L101 nessWitnessExtractor]: Location invariant before [L769-L769] ((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-02 16:08:46,400 INFO L101 nessWitnessExtractor]: Location invariant before [L722-L722] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-02 16:08:46,400 INFO L101 nessWitnessExtractor]: Location invariant before [L723-L723] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-02 16:08:46,400 INFO L101 nessWitnessExtractor]: Location invariant before [L725-L725] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-02 16:08:46,400 INFO L101 nessWitnessExtractor]: Location invariant before [L728-L728] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-02 16:08:46,400 INFO L101 nessWitnessExtractor]: Location invariant before [L732-L732] (unsigned long )arg == 0UL [2024-02-02 16:08:46,401 INFO L101 nessWitnessExtractor]: Location invariant before [L746-L746] (((((((((((((((0 <= __unbuffered_p0_EAX) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (1 <= __unbuffered_cnt)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-02 16:08:46,401 INFO L101 nessWitnessExtractor]: Location invariant before [L743-L743] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-02 16:08:46,401 INFO L101 nessWitnessExtractor]: Location invariant before [L18-L18] ((0 <= expression) && (expression <= 1)) && (expression == 0 || expression == 1) [2024-02-02 16:08:46,402 INFO L101 nessWitnessExtractor]: Location invariant before [L766-L766] ((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-02 16:08:46,402 INFO L101 nessWitnessExtractor]: Location invariant before [L724-L724] (unsigned long )arg == 0UL [2024-02-02 16:08:46,402 INFO L101 nessWitnessExtractor]: Location invariant before [L729-L729] (unsigned long )arg == 0UL [2024-02-02 16:08:46,402 INFO L101 nessWitnessExtractor]: Location invariant before [L739-L739] (unsigned long )arg == 0UL [2024-02-02 16:08:46,402 INFO L101 nessWitnessExtractor]: Location invariant before [L765-L765] ((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-02 16:08:46,402 INFO L101 nessWitnessExtractor]: Location invariant before [L771-L771] ((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && (__unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-02 16:08:46,402 INFO L101 nessWitnessExtractor]: Location invariant before [L726-L726] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (y <= 1)) && (x == 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (y == 0 || y == 1) [2024-02-02 16:08:46,402 INFO L101 nessWitnessExtractor]: Location invariant before [L761-L761] ((((((__unbuffered_cnt == 0) && (__unbuffered_p0_EAX == 0)) && (__unbuffered_p1_EAX == 0)) && (main$tmp_guard0 == (_Bool)0)) && (main$tmp_guard1 == (_Bool)0)) && (x == 0)) && (y == 0) [2024-02-02 16:08:46,403 INFO L101 nessWitnessExtractor]: Location invariant before [L745-L745] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-02 16:08:46,403 INFO L101 nessWitnessExtractor]: Location invariant before [L730-L730] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-02 16:08:46,403 INFO L101 nessWitnessExtractor]: Location invariant before [L738-L738] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-02 16:08:46,403 INFO L101 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 1 [2024-02-02 16:08:46,404 INFO L101 nessWitnessExtractor]: Location invariant before [L741-L741] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y == 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1) [2024-02-02 16:08:46,444 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-02-02 16:08:46,598 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i[1017,1030] [2024-02-02 16:08:46,731 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 16:08:46,750 INFO L204 MainTranslator]: Completed pre-run Start Parsing Local [2024-02-02 16:08:46,777 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i[1017,1030] Start Parsing Local Start Parsing Local [2024-02-02 16:08:46,781 WARN L424 MainDispatcher]: Unable to annotate ; with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-02 16:08:46,920 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 16:08:46,951 INFO L208 MainTranslator]: Completed translation [2024-02-02 16:08:46,952 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 04:08:46 WrapperNode [2024-02-02 16:08:46,952 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-02 16:08:46,953 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-02 16:08:46,953 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-02 16:08:46,953 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-02 16:08:46,958 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 04:08:46" (1/1) ... [2024-02-02 16:08:46,985 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 04:08:46" (1/1) ... [2024-02-02 16:08:47,013 INFO L138 Inliner]: procedures = 175, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 67 [2024-02-02 16:08:47,014 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-02 16:08:47,014 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-02 16:08:47,014 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-02 16:08:47,015 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-02 16:08:47,023 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 04:08:46" (1/1) ... [2024-02-02 16:08:47,024 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 04:08:46" (1/1) ... [2024-02-02 16:08:47,033 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 04:08:46" (1/1) ... [2024-02-02 16:08:47,055 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-02-02 16:08:47,055 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 04:08:46" (1/1) ... [2024-02-02 16:08:47,056 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 04:08:46" (1/1) ... [2024-02-02 16:08:47,071 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 04:08:46" (1/1) ... [2024-02-02 16:08:47,074 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 04:08:46" (1/1) ... [2024-02-02 16:08:47,079 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 04:08:46" (1/1) ... [2024-02-02 16:08:47,081 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 04:08:46" (1/1) ... [2024-02-02 16:08:47,084 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-02 16:08:47,088 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-02 16:08:47,088 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-02 16:08:47,088 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-02 16:08:47,089 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 04:08:46" (1/1) ... [2024-02-02 16:08:47,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 16:08:47,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 16:08:47,126 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-02 16:08:47,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-02 16:08:47,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-02 16:08:47,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-02 16:08:47,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-02 16:08:47,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-02 16:08:47,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-02 16:08:47,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-02 16:08:47,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-02 16:08:47,165 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-02-02 16:08:47,165 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-02-02 16:08:47,165 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-02-02 16:08:47,165 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-02-02 16:08:47,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-02 16:08:47,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-02 16:08:47,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-02 16:08:47,165 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-02 16:08:47,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-02 16:08:47,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-02 16:08:47,167 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-02 16:08:47,274 INFO L244 CfgBuilder]: Building ICFG [2024-02-02 16:08:47,275 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-02 16:08:47,590 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-02 16:08:47,590 INFO L293 CfgBuilder]: Performing block encoding [2024-02-02 16:08:47,745 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-02 16:08:47,746 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-02 16:08:47,746 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 04:08:47 BoogieIcfgContainer [2024-02-02 16:08:47,746 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-02 16:08:47,748 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-02 16:08:47,748 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-02 16:08:47,751 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-02 16:08:47,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 04:08:44" (1/4) ... [2024-02-02 16:08:47,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a84805b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 02.02 04:08:47, skipping insertion in model container [2024-02-02 16:08:47,752 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 04:08:46" (2/4) ... [2024-02-02 16:08:47,752 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a84805b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 04:08:47, skipping insertion in model container [2024-02-02 16:08:47,752 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 04:08:46" (3/4) ... [2024-02-02 16:08:47,752 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a84805b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 04:08:47, skipping insertion in model container [2024-02-02 16:08:47,752 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 04:08:47" (4/4) ... [2024-02-02 16:08:47,753 INFO L112 eAbstractionObserver]: Analyzing ICFG safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-02-02 16:08:47,767 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-02 16:08:47,768 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2024-02-02 16:08:47,768 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-02 16:08:47,821 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-02 16:08:47,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 73 transitions, 154 flow [2024-02-02 16:08:47,873 INFO L124 PetriNetUnfolderBase]: 1/71 cut-off events. [2024-02-02 16:08:47,873 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 16:08:47,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 71 events. 1/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 242 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2024-02-02 16:08:47,876 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 73 transitions, 154 flow [2024-02-02 16:08:47,879 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 71 transitions, 148 flow [2024-02-02 16:08:47,891 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-02 16:08:47,898 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;@63bc0403, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-02 16:08:47,898 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-02-02 16:08:47,901 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-02 16:08:47,901 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-02 16:08:47,901 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 16:08:47,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:08:47,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-02 16:08:47,902 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:08:47,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:08:47,908 INFO L85 PathProgramCache]: Analyzing trace with hash 10181, now seen corresponding path program 1 times [2024-02-02 16:08:47,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:08:47,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34376370] [2024-02-02 16:08:47,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:08:47,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:08:48,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:08:48,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:08:48,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:08:48,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34376370] [2024-02-02 16:08:48,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34376370] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:08:48,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:08:48,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-02 16:08:48,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008890788] [2024-02-02 16:08:48,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:08:48,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 16:08:48,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:08:48,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 16:08:48,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 16:08:48,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 73 [2024-02-02 16:08:48,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 71 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:08:48,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:08:48,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 73 [2024-02-02 16:08:48,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:08:49,013 INFO L124 PetriNetUnfolderBase]: 1643/3614 cut-off events. [2024-02-02 16:08:49,013 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-02-02 16:08:49,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6277 conditions, 3614 events. 1643/3614 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 30357 event pairs, 1001 based on Foata normal form. 100/2309 useless extension candidates. Maximal degree in co-relation 6265. Up to 2517 conditions per place. [2024-02-02 16:08:49,034 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 42 selfloop transitions, 3 changer transitions 0/73 dead transitions. [2024-02-02 16:08:49,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 73 transitions, 245 flow [2024-02-02 16:08:49,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 16:08:49,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 16:08:49,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2024-02-02 16:08:49,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6940639269406392 [2024-02-02 16:08:49,045 INFO L175 Difference]: Start difference. First operand has 77 places, 71 transitions, 148 flow. Second operand 3 states and 152 transitions. [2024-02-02 16:08:49,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 73 transitions, 245 flow [2024-02-02 16:08:49,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 73 transitions, 242 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 16:08:49,053 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 147 flow [2024-02-02 16:08:49,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2024-02-02 16:08:49,057 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -8 predicate places. [2024-02-02 16:08:49,057 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 147 flow [2024-02-02 16:08:49,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:08:49,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:08:49,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-02 16:08:49,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-02 16:08:49,058 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:08:49,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:08:49,059 INFO L85 PathProgramCache]: Analyzing trace with hash 303701841, now seen corresponding path program 1 times [2024-02-02 16:08:49,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:08:49,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465880028] [2024-02-02 16:08:49,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:08:49,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:08:49,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:08:49,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:08:49,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:08:49,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465880028] [2024-02-02 16:08:49,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465880028] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:08:49,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:08:49,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 16:08:49,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099831181] [2024-02-02 16:08:49,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:08:49,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 16:08:49,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:08:49,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 16:08:49,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 16:08:49,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 73 [2024-02-02 16:08:49,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 147 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:08:49,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:08:49,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 73 [2024-02-02 16:08:49,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:08:49,565 INFO L124 PetriNetUnfolderBase]: 1780/3778 cut-off events. [2024-02-02 16:08:49,566 INFO L125 PetriNetUnfolderBase]: For 286/286 co-relation queries the response was YES. [2024-02-02 16:08:49,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7031 conditions, 3778 events. 1780/3778 cut-off events. For 286/286 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 31252 event pairs, 980 based on Foata normal form. 384/3027 useless extension candidates. Maximal degree in co-relation 7018. Up to 2714 conditions per place. [2024-02-02 16:08:49,617 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 55 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2024-02-02 16:08:49,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 79 transitions, 302 flow [2024-02-02 16:08:49,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 16:08:49,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 16:08:49,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 160 transitions. [2024-02-02 16:08:49,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.547945205479452 [2024-02-02 16:08:49,619 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 147 flow. Second operand 4 states and 160 transitions. [2024-02-02 16:08:49,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 79 transitions, 302 flow [2024-02-02 16:08:49,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 79 transitions, 298 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-02 16:08:49,621 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 138 flow [2024-02-02 16:08:49,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2024-02-02 16:08:49,622 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -11 predicate places. [2024-02-02 16:08:49,622 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 138 flow [2024-02-02 16:08:49,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:08:49,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:08:49,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-02 16:08:49,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-02 16:08:49,623 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:08:49,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:08:49,623 INFO L85 PathProgramCache]: Analyzing trace with hash 824822840, now seen corresponding path program 1 times [2024-02-02 16:08:49,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:08:49,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010838838] [2024-02-02 16:08:49,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:08:49,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:08:49,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:08:49,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:08:49,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:08:49,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010838838] [2024-02-02 16:08:49,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010838838] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:08:49,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:08:49,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 16:08:49,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125052625] [2024-02-02 16:08:49,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:08:49,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-02 16:08:49,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:08:49,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-02 16:08:49,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-02-02 16:08:49,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 73 [2024-02-02 16:08:49,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 138 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:08:49,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:08:49,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 73 [2024-02-02 16:08:49,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:08:50,300 INFO L124 PetriNetUnfolderBase]: 2412/5103 cut-off events. [2024-02-02 16:08:50,300 INFO L125 PetriNetUnfolderBase]: For 430/430 co-relation queries the response was YES. [2024-02-02 16:08:50,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9486 conditions, 5103 events. 2412/5103 cut-off events. For 430/430 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 42191 event pairs, 1501 based on Foata normal form. 14/3649 useless extension candidates. Maximal degree in co-relation 9472. Up to 3689 conditions per place. [2024-02-02 16:08:50,329 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 54 selfloop transitions, 5 changer transitions 0/77 dead transitions. [2024-02-02 16:08:50,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 77 transitions, 302 flow [2024-02-02 16:08:50,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 16:08:50,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 16:08:50,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2024-02-02 16:08:50,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4828767123287671 [2024-02-02 16:08:50,331 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 138 flow. Second operand 4 states and 141 transitions. [2024-02-02 16:08:50,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 77 transitions, 302 flow [2024-02-02 16:08:50,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 77 transitions, 298 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 16:08:50,333 INFO L231 Difference]: Finished difference. Result has 69 places, 60 transitions, 163 flow [2024-02-02 16:08:50,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=163, PETRI_PLACES=69, PETRI_TRANSITIONS=60} [2024-02-02 16:08:50,333 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -8 predicate places. [2024-02-02 16:08:50,334 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 60 transitions, 163 flow [2024-02-02 16:08:50,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:08:50,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:08:50,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:08:50,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-02 16:08:50,334 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:08:50,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:08:50,335 INFO L85 PathProgramCache]: Analyzing trace with hash -201206786, now seen corresponding path program 1 times [2024-02-02 16:08:50,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:08:50,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598591782] [2024-02-02 16:08:50,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:08:50,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:08:50,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:08:50,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:08:50,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:08:50,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598591782] [2024-02-02 16:08:50,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598591782] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:08:50,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:08:50,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 16:08:50,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272117518] [2024-02-02 16:08:50,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:08:50,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 16:08:50,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:08:50,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 16:08:50,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 16:08:50,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 73 [2024-02-02 16:08:50,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 60 transitions, 163 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:08:50,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:08:50,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 73 [2024-02-02 16:08:50,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:08:50,774 INFO L124 PetriNetUnfolderBase]: 1779/3476 cut-off events. [2024-02-02 16:08:50,774 INFO L125 PetriNetUnfolderBase]: For 492/506 co-relation queries the response was YES. [2024-02-02 16:08:50,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6922 conditions, 3476 events. 1779/3476 cut-off events. For 492/506 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 27113 event pairs, 387 based on Foata normal form. 400/3000 useless extension candidates. Maximal degree in co-relation 6906. Up to 2722 conditions per place. [2024-02-02 16:08:50,788 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 59 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2024-02-02 16:08:50,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 79 transitions, 337 flow [2024-02-02 16:08:50,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 16:08:50,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 16:08:50,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 163 transitions. [2024-02-02 16:08:50,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5582191780821918 [2024-02-02 16:08:50,790 INFO L175 Difference]: Start difference. First operand has 69 places, 60 transitions, 163 flow. Second operand 4 states and 163 transitions. [2024-02-02 16:08:50,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 79 transitions, 337 flow [2024-02-02 16:08:50,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 79 transitions, 325 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 16:08:50,792 INFO L231 Difference]: Finished difference. Result has 65 places, 55 transitions, 149 flow [2024-02-02 16:08:50,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=149, PETRI_PLACES=65, PETRI_TRANSITIONS=55} [2024-02-02 16:08:50,793 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -12 predicate places. [2024-02-02 16:08:50,793 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 55 transitions, 149 flow [2024-02-02 16:08:50,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:08:50,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:08:50,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:08:50,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-02 16:08:50,794 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:08:50,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:08:50,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1942442687, now seen corresponding path program 1 times [2024-02-02 16:08:50,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:08:50,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953735339] [2024-02-02 16:08:50,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:08:50,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:08:50,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:08:50,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:08:50,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:08:50,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953735339] [2024-02-02 16:08:50,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953735339] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:08:50,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:08:50,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 16:08:50,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140569976] [2024-02-02 16:08:50,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:08:50,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-02 16:08:50,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:08:50,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-02 16:08:50,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-02-02 16:08:50,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 73 [2024-02-02 16:08:50,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 55 transitions, 149 flow. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:08:50,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:08:50,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 73 [2024-02-02 16:08:50,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:08:51,368 INFO L124 PetriNetUnfolderBase]: 2427/5052 cut-off events. [2024-02-02 16:08:51,369 INFO L125 PetriNetUnfolderBase]: For 630/644 co-relation queries the response was YES. [2024-02-02 16:08:51,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9707 conditions, 5052 events. 2427/5052 cut-off events. For 630/644 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 40300 event pairs, 1713 based on Foata normal form. 20/3777 useless extension candidates. Maximal degree in co-relation 9692. Up to 3835 conditions per place. [2024-02-02 16:08:51,391 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 48 selfloop transitions, 6 changer transitions 0/68 dead transitions. [2024-02-02 16:08:51,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 68 transitions, 292 flow [2024-02-02 16:08:51,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 16:08:51,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 16:08:51,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-02-02 16:08:51,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4623287671232877 [2024-02-02 16:08:51,393 INFO L175 Difference]: Start difference. First operand has 65 places, 55 transitions, 149 flow. Second operand 4 states and 135 transitions. [2024-02-02 16:08:51,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 68 transitions, 292 flow [2024-02-02 16:08:51,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 68 transitions, 286 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 16:08:51,394 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 178 flow [2024-02-02 16:08:51,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=178, PETRI_PLACES=68, PETRI_TRANSITIONS=57} [2024-02-02 16:08:51,395 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -9 predicate places. [2024-02-02 16:08:51,395 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 178 flow [2024-02-02 16:08:51,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:08:51,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:08:51,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:08:51,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-02 16:08:51,396 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:08:51,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:08:51,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1288565090, now seen corresponding path program 1 times [2024-02-02 16:08:51,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:08:51,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720002864] [2024-02-02 16:08:51,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:08:51,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:08:51,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:08:51,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:08:51,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:08:51,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720002864] [2024-02-02 16:08:51,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720002864] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:08:51,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:08:51,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 16:08:51,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211121864] [2024-02-02 16:08:51,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:08:51,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 16:08:51,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:08:51,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 16:08:51,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 16:08:51,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:08:51,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 178 flow. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:08:51,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:08:51,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:08:51,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:08:52,076 INFO L124 PetriNetUnfolderBase]: 2169/4244 cut-off events. [2024-02-02 16:08:52,076 INFO L125 PetriNetUnfolderBase]: For 747/755 co-relation queries the response was YES. [2024-02-02 16:08:52,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8667 conditions, 4244 events. 2169/4244 cut-off events. For 747/755 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 32246 event pairs, 1464 based on Foata normal form. 32/3242 useless extension candidates. Maximal degree in co-relation 8649. Up to 3361 conditions per place. [2024-02-02 16:08:52,094 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 63 selfloop transitions, 10 changer transitions 0/87 dead transitions. [2024-02-02 16:08:52,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 87 transitions, 405 flow [2024-02-02 16:08:52,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 16:08:52,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 16:08:52,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 198 transitions. [2024-02-02 16:08:52,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520547945205479 [2024-02-02 16:08:52,095 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 178 flow. Second operand 6 states and 198 transitions. [2024-02-02 16:08:52,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 87 transitions, 405 flow [2024-02-02 16:08:52,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 87 transitions, 399 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-02 16:08:52,098 INFO L231 Difference]: Finished difference. Result has 76 places, 65 transitions, 250 flow [2024-02-02 16:08:52,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=250, PETRI_PLACES=76, PETRI_TRANSITIONS=65} [2024-02-02 16:08:52,098 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -1 predicate places. [2024-02-02 16:08:52,099 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 65 transitions, 250 flow [2024-02-02 16:08:52,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:08:52,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:08:52,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:08:52,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-02 16:08:52,100 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:08:52,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:08:52,100 INFO L85 PathProgramCache]: Analyzing trace with hash 907502443, now seen corresponding path program 1 times [2024-02-02 16:08:52,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:08:52,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923228299] [2024-02-02 16:08:52,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:08:52,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:08:52,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:08:52,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:08:52,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:08:52,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923228299] [2024-02-02 16:08:52,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923228299] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:08:52,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:08:52,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-02 16:08:52,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653099404] [2024-02-02 16:08:52,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:08:52,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-02 16:08:52,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:08:52,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-02 16:08:52,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-02 16:08:52,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-02 16:08:52,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 65 transitions, 250 flow. Second operand has 6 states, 6 states have (on average 32.5) internal successors, (195), 6 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:08:52,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:08:52,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-02 16:08:52,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:08:52,623 INFO L124 PetriNetUnfolderBase]: 1344/2885 cut-off events. [2024-02-02 16:08:52,624 INFO L125 PetriNetUnfolderBase]: For 1085/1093 co-relation queries the response was YES. [2024-02-02 16:08:52,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6221 conditions, 2885 events. 1344/2885 cut-off events. For 1085/1093 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 22280 event pairs, 990 based on Foata normal form. 32/2266 useless extension candidates. Maximal degree in co-relation 6198. Up to 2127 conditions per place. [2024-02-02 16:08:52,635 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 51 selfloop transitions, 7 changer transitions 0/79 dead transitions. [2024-02-02 16:08:52,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 79 transitions, 407 flow [2024-02-02 16:08:52,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 16:08:52,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 16:08:52,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 174 transitions. [2024-02-02 16:08:52,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5958904109589042 [2024-02-02 16:08:52,637 INFO L175 Difference]: Start difference. First operand has 76 places, 65 transitions, 250 flow. Second operand 4 states and 174 transitions. [2024-02-02 16:08:52,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 79 transitions, 407 flow [2024-02-02 16:08:52,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 79 transitions, 407 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-02 16:08:52,639 INFO L231 Difference]: Finished difference. Result has 81 places, 69 transitions, 300 flow [2024-02-02 16:08:52,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=300, PETRI_PLACES=81, PETRI_TRANSITIONS=69} [2024-02-02 16:08:52,640 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 4 predicate places. [2024-02-02 16:08:52,640 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 69 transitions, 300 flow [2024-02-02 16:08:52,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.5) internal successors, (195), 6 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:08:52,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:08:52,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:08:52,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-02 16:08:52,641 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:08:52,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:08:52,641 INFO L85 PathProgramCache]: Analyzing trace with hash 980523175, now seen corresponding path program 1 times [2024-02-02 16:08:52,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:08:52,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937082227] [2024-02-02 16:08:52,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:08:52,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:08:52,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:08:52,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:08:52,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:08:52,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937082227] [2024-02-02 16:08:52,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937082227] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:08:52,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:08:52,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 16:08:52,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514661467] [2024-02-02 16:08:52,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:08:52,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 16:08:52,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:08:52,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 16:08:52,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 16:08:52,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:08:52,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 69 transitions, 300 flow. Second operand has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:08:52,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:08:52,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:08:52,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:08:53,272 INFO L124 PetriNetUnfolderBase]: 1870/3830 cut-off events. [2024-02-02 16:08:53,272 INFO L125 PetriNetUnfolderBase]: For 1968/1984 co-relation queries the response was YES. [2024-02-02 16:08:53,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8742 conditions, 3830 events. 1870/3830 cut-off events. For 1968/1984 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 29285 event pairs, 1288 based on Foata normal form. 25/3164 useless extension candidates. Maximal degree in co-relation 8715. Up to 2925 conditions per place. [2024-02-02 16:08:53,289 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 61 selfloop transitions, 11 changer transitions 0/87 dead transitions. [2024-02-02 16:08:53,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 87 transitions, 496 flow [2024-02-02 16:08:53,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 16:08:53,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 16:08:53,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 190 transitions. [2024-02-02 16:08:53,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4337899543378995 [2024-02-02 16:08:53,290 INFO L175 Difference]: Start difference. First operand has 81 places, 69 transitions, 300 flow. Second operand 6 states and 190 transitions. [2024-02-02 16:08:53,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 87 transitions, 496 flow [2024-02-02 16:08:53,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 87 transitions, 492 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-02-02 16:08:53,294 INFO L231 Difference]: Finished difference. Result has 88 places, 71 transitions, 346 flow [2024-02-02 16:08:53,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=346, PETRI_PLACES=88, PETRI_TRANSITIONS=71} [2024-02-02 16:08:53,295 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 11 predicate places. [2024-02-02 16:08:53,295 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 71 transitions, 346 flow [2024-02-02 16:08:53,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:08:53,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:08:53,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:08:53,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-02 16:08:53,296 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:08:53,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:08:53,296 INFO L85 PathProgramCache]: Analyzing trace with hash 418265522, now seen corresponding path program 1 times [2024-02-02 16:08:53,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:08:53,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073406853] [2024-02-02 16:08:53,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:08:53,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:08:53,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:08:53,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:08:53,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:08:53,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073406853] [2024-02-02 16:08:53,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073406853] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:08:53,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:08:53,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 16:08:53,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629042036] [2024-02-02 16:08:53,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:08:53,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 16:08:53,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:08:53,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 16:08:53,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 16:08:53,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:08:53,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 71 transitions, 346 flow. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:08:53,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:08:53,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:08:53,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:08:53,925 INFO L124 PetriNetUnfolderBase]: 1880/3845 cut-off events. [2024-02-02 16:08:53,926 INFO L125 PetriNetUnfolderBase]: For 2188/2196 co-relation queries the response was YES. [2024-02-02 16:08:53,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9025 conditions, 3845 events. 1880/3845 cut-off events. For 2188/2196 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 29343 event pairs, 1273 based on Foata normal form. 14/3255 useless extension candidates. Maximal degree in co-relation 8994. Up to 2935 conditions per place. [2024-02-02 16:08:53,944 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 63 selfloop transitions, 11 changer transitions 0/89 dead transitions. [2024-02-02 16:08:53,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 89 transitions, 546 flow [2024-02-02 16:08:53,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 16:08:53,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 16:08:53,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 168 transitions. [2024-02-02 16:08:53,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4602739726027397 [2024-02-02 16:08:53,946 INFO L175 Difference]: Start difference. First operand has 88 places, 71 transitions, 346 flow. Second operand 5 states and 168 transitions. [2024-02-02 16:08:53,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 89 transitions, 546 flow [2024-02-02 16:08:53,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 89 transitions, 524 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-02-02 16:08:53,949 INFO L231 Difference]: Finished difference. Result has 90 places, 74 transitions, 372 flow [2024-02-02 16:08:53,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=372, PETRI_PLACES=90, PETRI_TRANSITIONS=74} [2024-02-02 16:08:53,950 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 13 predicate places. [2024-02-02 16:08:53,950 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 74 transitions, 372 flow [2024-02-02 16:08:53,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:08:53,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:08:53,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:08:53,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-02 16:08:53,951 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:08:53,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:08:53,952 INFO L85 PathProgramCache]: Analyzing trace with hash -396236462, now seen corresponding path program 2 times [2024-02-02 16:08:53,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:08:53,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925960102] [2024-02-02 16:08:53,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:08:53,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:08:53,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:08:54,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:08:54,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:08:54,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925960102] [2024-02-02 16:08:54,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925960102] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:08:54,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:08:54,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 16:08:54,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100665057] [2024-02-02 16:08:54,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:08:54,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 16:08:54,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:08:54,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 16:08:54,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 16:08:54,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:08:54,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 74 transitions, 372 flow. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:08:54,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:08:54,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:08:54,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:08:54,841 INFO L124 PetriNetUnfolderBase]: 1870/3815 cut-off events. [2024-02-02 16:08:54,841 INFO L125 PetriNetUnfolderBase]: For 2323/2331 co-relation queries the response was YES. [2024-02-02 16:08:54,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9032 conditions, 3815 events. 1870/3815 cut-off events. For 2323/2331 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 29134 event pairs, 1284 based on Foata normal form. 14/3223 useless extension candidates. Maximal degree in co-relation 9000. Up to 2932 conditions per place. [2024-02-02 16:08:54,864 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 59 selfloop transitions, 13 changer transitions 0/87 dead transitions. [2024-02-02 16:08:54,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 87 transitions, 551 flow [2024-02-02 16:08:54,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 16:08:54,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 16:08:54,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 166 transitions. [2024-02-02 16:08:54,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4547945205479452 [2024-02-02 16:08:54,866 INFO L175 Difference]: Start difference. First operand has 90 places, 74 transitions, 372 flow. Second operand 5 states and 166 transitions. [2024-02-02 16:08:54,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 87 transitions, 551 flow [2024-02-02 16:08:54,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 87 transitions, 527 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-02-02 16:08:54,870 INFO L231 Difference]: Finished difference. Result has 92 places, 75 transitions, 387 flow [2024-02-02 16:08:54,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=387, PETRI_PLACES=92, PETRI_TRANSITIONS=75} [2024-02-02 16:08:54,871 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 15 predicate places. [2024-02-02 16:08:54,871 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 75 transitions, 387 flow [2024-02-02 16:08:54,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:08:54,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:08:54,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:08:54,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-02 16:08:54,872 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:08:54,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:08:54,872 INFO L85 PathProgramCache]: Analyzing trace with hash -466628314, now seen corresponding path program 1 times [2024-02-02 16:08:54,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:08:54,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117673175] [2024-02-02 16:08:54,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:08:54,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:08:54,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:08:55,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:08:55,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:08:55,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117673175] [2024-02-02 16:08:55,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117673175] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:08:55,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:08:55,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 16:08:55,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095980290] [2024-02-02 16:08:55,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:08:55,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 16:08:55,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:08:55,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 16:08:55,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 16:08:55,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:08:55,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 75 transitions, 387 flow. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:08:55,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:08:55,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:08:55,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:08:55,730 INFO L124 PetriNetUnfolderBase]: 1886/3870 cut-off events. [2024-02-02 16:08:55,730 INFO L125 PetriNetUnfolderBase]: For 2449/2477 co-relation queries the response was YES. [2024-02-02 16:08:55,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9217 conditions, 3870 events. 1886/3870 cut-off events. For 2449/2477 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 29727 event pairs, 1426 based on Foata normal form. 18/3274 useless extension candidates. Maximal degree in co-relation 9184. Up to 2938 conditions per place. [2024-02-02 16:08:55,758 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 67 selfloop transitions, 15 changer transitions 0/98 dead transitions. [2024-02-02 16:08:55,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 98 transitions, 631 flow [2024-02-02 16:08:55,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 16:08:55,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 16:08:55,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 194 transitions. [2024-02-02 16:08:55,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4429223744292237 [2024-02-02 16:08:55,760 INFO L175 Difference]: Start difference. First operand has 92 places, 75 transitions, 387 flow. Second operand 6 states and 194 transitions. [2024-02-02 16:08:55,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 98 transitions, 631 flow [2024-02-02 16:08:55,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 98 transitions, 622 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-02 16:08:55,765 INFO L231 Difference]: Finished difference. Result has 99 places, 81 transitions, 464 flow [2024-02-02 16:08:55,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=464, PETRI_PLACES=99, PETRI_TRANSITIONS=81} [2024-02-02 16:08:55,766 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 22 predicate places. [2024-02-02 16:08:55,766 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 81 transitions, 464 flow [2024-02-02 16:08:55,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:08:55,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:08:55,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:08:55,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-02-02 16:08:55,767 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:08:55,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:08:55,767 INFO L85 PathProgramCache]: Analyzing trace with hash -371188550, now seen corresponding path program 2 times [2024-02-02 16:08:55,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:08:55,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286537367] [2024-02-02 16:08:55,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:08:55,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:08:55,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:08:55,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:08:55,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:08:55,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286537367] [2024-02-02 16:08:55,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286537367] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:08:55,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:08:55,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 16:08:55,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331131633] [2024-02-02 16:08:55,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:08:55,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 16:08:55,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:08:55,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 16:08:55,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 16:08:55,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:08:55,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 81 transitions, 464 flow. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:08:55,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:08:55,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:08:55,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:08:56,430 INFO L124 PetriNetUnfolderBase]: 1896/3886 cut-off events. [2024-02-02 16:08:56,431 INFO L125 PetriNetUnfolderBase]: For 2707/2742 co-relation queries the response was YES. [2024-02-02 16:08:56,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9388 conditions, 3886 events. 1896/3886 cut-off events. For 2707/2742 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 29817 event pairs, 1423 based on Foata normal form. 20/3295 useless extension candidates. Maximal degree in co-relation 9351. Up to 2947 conditions per place. [2024-02-02 16:08:56,459 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 65 selfloop transitions, 17 changer transitions 0/98 dead transitions. [2024-02-02 16:08:56,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 98 transitions, 683 flow [2024-02-02 16:08:56,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 16:08:56,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 16:08:56,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 169 transitions. [2024-02-02 16:08:56,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46301369863013697 [2024-02-02 16:08:56,463 INFO L175 Difference]: Start difference. First operand has 99 places, 81 transitions, 464 flow. Second operand 5 states and 169 transitions. [2024-02-02 16:08:56,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 98 transitions, 683 flow [2024-02-02 16:08:56,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 98 transitions, 669 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-02-02 16:08:56,472 INFO L231 Difference]: Finished difference. Result has 103 places, 83 transitions, 508 flow [2024-02-02 16:08:56,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=508, PETRI_PLACES=103, PETRI_TRANSITIONS=83} [2024-02-02 16:08:56,473 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 26 predicate places. [2024-02-02 16:08:56,473 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 83 transitions, 508 flow [2024-02-02 16:08:56,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:08:56,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:08:56,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:08:56,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-02-02 16:08:56,473 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:08:56,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:08:56,474 INFO L85 PathProgramCache]: Analyzing trace with hash -370382240, now seen corresponding path program 3 times [2024-02-02 16:08:56,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:08:56,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634536182] [2024-02-02 16:08:56,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:08:56,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:08:56,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:08:56,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:08:56,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:08:56,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634536182] [2024-02-02 16:08:56,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634536182] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:08:56,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:08:56,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 16:08:56,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23966433] [2024-02-02 16:08:56,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:08:56,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 16:08:56,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:08:56,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 16:08:56,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 16:08:56,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:08:56,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 83 transitions, 508 flow. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:08:56,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:08:56,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:08:56,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:08:57,053 INFO L124 PetriNetUnfolderBase]: 1886/3876 cut-off events. [2024-02-02 16:08:57,053 INFO L125 PetriNetUnfolderBase]: For 2975/2999 co-relation queries the response was YES. [2024-02-02 16:08:57,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9378 conditions, 3876 events. 1886/3876 cut-off events. For 2975/2999 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 29711 event pairs, 1417 based on Foata normal form. 21/3289 useless extension candidates. Maximal degree in co-relation 9339. Up to 2944 conditions per place. [2024-02-02 16:08:57,075 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 63 selfloop transitions, 16 changer transitions 0/95 dead transitions. [2024-02-02 16:08:57,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 95 transitions, 694 flow [2024-02-02 16:08:57,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 16:08:57,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 16:08:57,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 165 transitions. [2024-02-02 16:08:57,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520547945205479 [2024-02-02 16:08:57,077 INFO L175 Difference]: Start difference. First operand has 103 places, 83 transitions, 508 flow. Second operand 5 states and 165 transitions. [2024-02-02 16:08:57,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 95 transitions, 694 flow [2024-02-02 16:08:57,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 95 transitions, 672 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-02-02 16:08:57,081 INFO L231 Difference]: Finished difference. Result has 105 places, 83 transitions, 523 flow [2024-02-02 16:08:57,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=523, PETRI_PLACES=105, PETRI_TRANSITIONS=83} [2024-02-02 16:08:57,082 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 28 predicate places. [2024-02-02 16:08:57,082 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 83 transitions, 523 flow [2024-02-02 16:08:57,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:08:57,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:08:57,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:08:57,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-02-02 16:08:57,083 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:08:57,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:08:57,083 INFO L85 PathProgramCache]: Analyzing trace with hash 29961245, now seen corresponding path program 1 times [2024-02-02 16:08:57,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:08:57,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085866110] [2024-02-02 16:08:57,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:08:57,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:08:57,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:08:57,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:08:57,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:08:57,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085866110] [2024-02-02 16:08:57,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085866110] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:08:57,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:08:57,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 16:08:57,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160984522] [2024-02-02 16:08:57,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:08:57,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 16:08:57,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:08:57,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 16:08:57,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 16:08:57,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-02 16:08:57,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 83 transitions, 523 flow. Second operand has 7 states, 7 states have (on average 32.42857142857143) internal successors, (227), 7 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:08:57,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:08:57,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-02 16:08:57,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:08:57,615 INFO L124 PetriNetUnfolderBase]: 1267/2694 cut-off events. [2024-02-02 16:08:57,615 INFO L125 PetriNetUnfolderBase]: For 2729/2740 co-relation queries the response was YES. [2024-02-02 16:08:57,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6661 conditions, 2694 events. 1267/2694 cut-off events. For 2729/2740 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 20164 event pairs, 647 based on Foata normal form. 35/2315 useless extension candidates. Maximal degree in co-relation 6622. Up to 1885 conditions per place. [2024-02-02 16:08:57,633 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 65 selfloop transitions, 17 changer transitions 0/106 dead transitions. [2024-02-02 16:08:57,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 106 transitions, 763 flow [2024-02-02 16:08:57,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 16:08:57,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 16:08:57,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 219 transitions. [2024-02-02 16:08:57,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-02-02 16:08:57,636 INFO L175 Difference]: Start difference. First operand has 105 places, 83 transitions, 523 flow. Second operand 5 states and 219 transitions. [2024-02-02 16:08:57,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 106 transitions, 763 flow [2024-02-02 16:08:57,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 106 transitions, 727 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-02-02 16:08:57,641 INFO L231 Difference]: Finished difference. Result has 107 places, 87 transitions, 561 flow [2024-02-02 16:08:57,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=561, PETRI_PLACES=107, PETRI_TRANSITIONS=87} [2024-02-02 16:08:57,641 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 30 predicate places. [2024-02-02 16:08:57,641 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 87 transitions, 561 flow [2024-02-02 16:08:57,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.42857142857143) internal successors, (227), 7 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:08:57,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:08:57,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:08:57,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-02-02 16:08:57,642 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:08:57,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:08:57,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1469292575, now seen corresponding path program 2 times [2024-02-02 16:08:57,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:08:57,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956552939] [2024-02-02 16:08:57,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:08:57,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:08:57,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:08:57,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:08:57,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:08:57,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956552939] [2024-02-02 16:08:57,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956552939] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:08:57,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:08:57,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 16:08:57,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436917938] [2024-02-02 16:08:57,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:08:57,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 16:08:57,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:08:57,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 16:08:57,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-02-02 16:08:57,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-02 16:08:57,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 87 transitions, 561 flow. Second operand has 7 states, 7 states have (on average 32.42857142857143) internal successors, (227), 7 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:08:57,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:08:57,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-02 16:08:57,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:08:58,178 INFO L124 PetriNetUnfolderBase]: 1251/2658 cut-off events. [2024-02-02 16:08:58,179 INFO L125 PetriNetUnfolderBase]: For 3726/3737 co-relation queries the response was YES. [2024-02-02 16:08:58,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6926 conditions, 2658 events. 1251/2658 cut-off events. For 3726/3737 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 19770 event pairs, 791 based on Foata normal form. 19/2343 useless extension candidates. Maximal degree in co-relation 6886. Up to 1937 conditions per place. [2024-02-02 16:08:58,193 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 60 selfloop transitions, 15 changer transitions 0/99 dead transitions. [2024-02-02 16:08:58,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 99 transitions, 745 flow [2024-02-02 16:08:58,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 16:08:58,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 16:08:58,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 177 transitions. [2024-02-02 16:08:58,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6061643835616438 [2024-02-02 16:08:58,195 INFO L175 Difference]: Start difference. First operand has 107 places, 87 transitions, 561 flow. Second operand 4 states and 177 transitions. [2024-02-02 16:08:58,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 99 transitions, 745 flow [2024-02-02 16:08:58,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 99 transitions, 733 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-02-02 16:08:58,200 INFO L231 Difference]: Finished difference. Result has 110 places, 87 transitions, 591 flow [2024-02-02 16:08:58,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=591, PETRI_PLACES=110, PETRI_TRANSITIONS=87} [2024-02-02 16:08:58,202 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 33 predicate places. [2024-02-02 16:08:58,202 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 87 transitions, 591 flow [2024-02-02 16:08:58,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.42857142857143) internal successors, (227), 7 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:08:58,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:08:58,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:08:58,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-02-02 16:08:58,203 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:08:58,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:08:58,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1120323165, now seen corresponding path program 1 times [2024-02-02 16:08:58,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:08:58,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982413235] [2024-02-02 16:08:58,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:08:58,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:08:58,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:08:58,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:08:58,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:08:58,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982413235] [2024-02-02 16:08:58,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982413235] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:08:58,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:08:58,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 16:08:58,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543665329] [2024-02-02 16:08:58,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:08:58,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 16:08:58,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:08:58,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 16:08:58,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-02-02 16:08:58,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-02 16:08:58,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 87 transitions, 591 flow. Second operand has 7 states, 7 states have (on average 32.42857142857143) internal successors, (227), 7 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:08:58,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:08:58,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-02 16:08:58,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:08:58,793 INFO L124 PetriNetUnfolderBase]: 1291/2728 cut-off events. [2024-02-02 16:08:58,793 INFO L125 PetriNetUnfolderBase]: For 4386/4406 co-relation queries the response was YES. [2024-02-02 16:08:58,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7251 conditions, 2728 events. 1291/2728 cut-off events. For 4386/4406 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 20184 event pairs, 815 based on Foata normal form. 36/2430 useless extension candidates. Maximal degree in co-relation 7209. Up to 2001 conditions per place. [2024-02-02 16:08:58,806 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 58 selfloop transitions, 17 changer transitions 0/99 dead transitions. [2024-02-02 16:08:58,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 99 transitions, 777 flow [2024-02-02 16:08:58,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 16:08:58,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 16:08:58,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 176 transitions. [2024-02-02 16:08:58,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6027397260273972 [2024-02-02 16:08:58,808 INFO L175 Difference]: Start difference. First operand has 110 places, 87 transitions, 591 flow. Second operand 4 states and 176 transitions. [2024-02-02 16:08:58,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 99 transitions, 777 flow [2024-02-02 16:08:58,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 99 transitions, 747 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-02 16:08:58,813 INFO L231 Difference]: Finished difference. Result has 111 places, 89 transitions, 624 flow [2024-02-02 16:08:58,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=624, PETRI_PLACES=111, PETRI_TRANSITIONS=89} [2024-02-02 16:08:58,814 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 34 predicate places. [2024-02-02 16:08:58,814 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 89 transitions, 624 flow [2024-02-02 16:08:58,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.42857142857143) internal successors, (227), 7 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:08:58,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:08:58,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:08:58,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-02-02 16:08:58,815 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:08:58,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:08:58,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1828067067, now seen corresponding path program 2 times [2024-02-02 16:08:58,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:08:58,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273162422] [2024-02-02 16:08:58,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:08:58,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:08:58,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:08:58,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:08:58,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:08:58,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273162422] [2024-02-02 16:08:58,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273162422] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:08:58,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:08:58,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 16:08:58,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336618645] [2024-02-02 16:08:58,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:08:58,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 16:08:58,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:08:58,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 16:08:58,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 16:08:58,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-02 16:08:58,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 89 transitions, 624 flow. Second operand has 7 states, 7 states have (on average 32.42857142857143) internal successors, (227), 7 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:08:58,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:08:58,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-02 16:08:58,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:08:59,289 INFO L124 PetriNetUnfolderBase]: 1163/2472 cut-off events. [2024-02-02 16:08:59,289 INFO L125 PetriNetUnfolderBase]: For 4939/4965 co-relation queries the response was YES. [2024-02-02 16:08:59,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6885 conditions, 2472 events. 1163/2472 cut-off events. For 4939/4965 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 17867 event pairs, 751 based on Foata normal form. 42/2220 useless extension candidates. Maximal degree in co-relation 6842. Up to 1745 conditions per place. [2024-02-02 16:08:59,304 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 64 selfloop transitions, 19 changer transitions 0/107 dead transitions. [2024-02-02 16:08:59,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 107 transitions, 848 flow [2024-02-02 16:08:59,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 16:08:59,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 16:08:59,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 215 transitions. [2024-02-02 16:08:59,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.589041095890411 [2024-02-02 16:08:59,306 INFO L175 Difference]: Start difference. First operand has 111 places, 89 transitions, 624 flow. Second operand 5 states and 215 transitions. [2024-02-02 16:08:59,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 107 transitions, 848 flow [2024-02-02 16:08:59,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 107 transitions, 817 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-02-02 16:08:59,312 INFO L231 Difference]: Finished difference. Result has 114 places, 91 transitions, 656 flow [2024-02-02 16:08:59,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=595, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=656, PETRI_PLACES=114, PETRI_TRANSITIONS=91} [2024-02-02 16:08:59,313 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 37 predicate places. [2024-02-02 16:08:59,313 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 91 transitions, 656 flow [2024-02-02 16:08:59,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.42857142857143) internal successors, (227), 7 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:08:59,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:08:59,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:08:59,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-02-02 16:08:59,314 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:08:59,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:08:59,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1123882897, now seen corresponding path program 1 times [2024-02-02 16:08:59,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:08:59,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898059063] [2024-02-02 16:08:59,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:08:59,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:08:59,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:08:59,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:08:59,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:08:59,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898059063] [2024-02-02 16:08:59,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898059063] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:08:59,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:08:59,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 16:08:59,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115997218] [2024-02-02 16:08:59,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:08:59,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 16:08:59,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:08:59,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 16:08:59,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 16:08:59,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:08:59,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 91 transitions, 656 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:08:59,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:08:59,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:08:59,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:00,049 INFO L124 PetriNetUnfolderBase]: 1647/3333 cut-off events. [2024-02-02 16:09:00,049 INFO L125 PetriNetUnfolderBase]: For 6110/6127 co-relation queries the response was YES. [2024-02-02 16:09:00,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9268 conditions, 3333 events. 1647/3333 cut-off events. For 6110/6127 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 23824 event pairs, 762 based on Foata normal form. 26/2990 useless extension candidates. Maximal degree in co-relation 9224. Up to 2377 conditions per place. [2024-02-02 16:09:00,073 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 84 selfloop transitions, 21 changer transitions 0/121 dead transitions. [2024-02-02 16:09:00,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 121 transitions, 958 flow [2024-02-02 16:09:00,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 16:09:00,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 16:09:00,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 207 transitions. [2024-02-02 16:09:00,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4726027397260274 [2024-02-02 16:09:00,075 INFO L175 Difference]: Start difference. First operand has 114 places, 91 transitions, 656 flow. Second operand 6 states and 207 transitions. [2024-02-02 16:09:00,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 121 transitions, 958 flow [2024-02-02 16:09:00,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 121 transitions, 919 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-02-02 16:09:00,086 INFO L231 Difference]: Finished difference. Result has 118 places, 94 transitions, 693 flow [2024-02-02 16:09:00,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=617, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=693, PETRI_PLACES=118, PETRI_TRANSITIONS=94} [2024-02-02 16:09:00,086 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 41 predicate places. [2024-02-02 16:09:00,086 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 94 transitions, 693 flow [2024-02-02 16:09:00,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:00,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:00,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:00,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-02-02 16:09:00,087 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:00,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:00,088 INFO L85 PathProgramCache]: Analyzing trace with hash 617494199, now seen corresponding path program 1 times [2024-02-02 16:09:00,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:00,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960220472] [2024-02-02 16:09:00,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:00,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:00,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:00,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:00,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:00,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960220472] [2024-02-02 16:09:00,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960220472] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:00,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:00,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 16:09:00,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99542103] [2024-02-02 16:09:00,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:00,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 16:09:00,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:00,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 16:09:00,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 16:09:00,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:00,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 94 transitions, 693 flow. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:00,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:00,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:00,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:00,793 INFO L124 PetriNetUnfolderBase]: 1701/3467 cut-off events. [2024-02-02 16:09:00,794 INFO L125 PetriNetUnfolderBase]: For 6344/6420 co-relation queries the response was YES. [2024-02-02 16:09:00,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9754 conditions, 3467 events. 1701/3467 cut-off events. For 6344/6420 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 24800 event pairs, 832 based on Foata normal form. 36/3112 useless extension candidates. Maximal degree in co-relation 9708. Up to 2445 conditions per place. [2024-02-02 16:09:00,819 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 81 selfloop transitions, 25 changer transitions 0/123 dead transitions. [2024-02-02 16:09:00,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 123 transitions, 980 flow [2024-02-02 16:09:00,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 16:09:00,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 16:09:00,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 230 transitions. [2024-02-02 16:09:00,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4500978473581213 [2024-02-02 16:09:00,821 INFO L175 Difference]: Start difference. First operand has 118 places, 94 transitions, 693 flow. Second operand 7 states and 230 transitions. [2024-02-02 16:09:00,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 123 transitions, 980 flow [2024-02-02 16:09:00,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 123 transitions, 940 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-02-02 16:09:00,834 INFO L231 Difference]: Finished difference. Result has 121 places, 94 transitions, 711 flow [2024-02-02 16:09:00,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=711, PETRI_PLACES=121, PETRI_TRANSITIONS=94} [2024-02-02 16:09:00,835 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 44 predicate places. [2024-02-02 16:09:00,835 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 94 transitions, 711 flow [2024-02-02 16:09:00,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:00,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:00,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:00,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-02-02 16:09:00,836 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:00,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:00,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1003816937, now seen corresponding path program 2 times [2024-02-02 16:09:00,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:00,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755197090] [2024-02-02 16:09:00,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:00,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:00,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:01,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:01,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:01,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755197090] [2024-02-02 16:09:01,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755197090] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:01,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:01,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 16:09:01,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143944438] [2024-02-02 16:09:01,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:01,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 16:09:01,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:01,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 16:09:01,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-02-02 16:09:01,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:01,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 94 transitions, 711 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:01,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:01,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:01,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:01,515 INFO L124 PetriNetUnfolderBase]: 1587/3237 cut-off events. [2024-02-02 16:09:01,516 INFO L125 PetriNetUnfolderBase]: For 6461/6478 co-relation queries the response was YES. [2024-02-02 16:09:01,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9333 conditions, 3237 events. 1587/3237 cut-off events. For 6461/6478 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 23005 event pairs, 1029 based on Foata normal form. 38/2906 useless extension candidates. Maximal degree in co-relation 9286. Up to 2454 conditions per place. [2024-02-02 16:09:01,540 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 76 selfloop transitions, 17 changer transitions 0/109 dead transitions. [2024-02-02 16:09:01,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 109 transitions, 940 flow [2024-02-02 16:09:01,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 16:09:01,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 16:09:01,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2024-02-02 16:09:01,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4383561643835616 [2024-02-02 16:09:01,542 INFO L175 Difference]: Start difference. First operand has 121 places, 94 transitions, 711 flow. Second operand 6 states and 192 transitions. [2024-02-02 16:09:01,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 109 transitions, 940 flow [2024-02-02 16:09:01,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 109 transitions, 877 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-02-02 16:09:01,553 INFO L231 Difference]: Finished difference. Result has 120 places, 94 transitions, 689 flow [2024-02-02 16:09:01,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=689, PETRI_PLACES=120, PETRI_TRANSITIONS=94} [2024-02-02 16:09:01,553 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 43 predicate places. [2024-02-02 16:09:01,553 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 94 transitions, 689 flow [2024-02-02 16:09:01,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:01,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:01,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:01,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-02-02 16:09:01,554 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:01,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:01,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1120403133, now seen corresponding path program 1 times [2024-02-02 16:09:01,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:01,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633397036] [2024-02-02 16:09:01,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:01,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:01,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:01,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:01,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:01,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633397036] [2024-02-02 16:09:01,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633397036] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:01,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:01,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 16:09:01,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899895987] [2024-02-02 16:09:01,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:01,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 16:09:01,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:01,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 16:09:01,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-02-02 16:09:01,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:01,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 94 transitions, 689 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:01,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:01,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:01,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:02,351 INFO L124 PetriNetUnfolderBase]: 1694/3442 cut-off events. [2024-02-02 16:09:02,352 INFO L125 PetriNetUnfolderBase]: For 6728/6801 co-relation queries the response was YES. [2024-02-02 16:09:02,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9885 conditions, 3442 events. 1694/3442 cut-off events. For 6728/6801 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 24580 event pairs, 1003 based on Foata normal form. 42/3084 useless extension candidates. Maximal degree in co-relation 9838. Up to 2539 conditions per place. [2024-02-02 16:09:02,378 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 90 selfloop transitions, 21 changer transitions 0/128 dead transitions. [2024-02-02 16:09:02,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 128 transitions, 1026 flow [2024-02-02 16:09:02,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 16:09:02,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 16:09:02,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 252 transitions. [2024-02-02 16:09:02,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4315068493150685 [2024-02-02 16:09:02,383 INFO L175 Difference]: Start difference. First operand has 120 places, 94 transitions, 689 flow. Second operand 8 states and 252 transitions. [2024-02-02 16:09:02,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 128 transitions, 1026 flow [2024-02-02 16:09:02,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 128 transitions, 982 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-02-02 16:09:02,393 INFO L231 Difference]: Finished difference. Result has 123 places, 98 transitions, 730 flow [2024-02-02 16:09:02,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=730, PETRI_PLACES=123, PETRI_TRANSITIONS=98} [2024-02-02 16:09:02,394 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 46 predicate places. [2024-02-02 16:09:02,394 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 98 transitions, 730 flow [2024-02-02 16:09:02,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:02,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:02,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:02,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-02-02 16:09:02,395 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:02,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:02,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1491555783, now seen corresponding path program 2 times [2024-02-02 16:09:02,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:02,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267239073] [2024-02-02 16:09:02,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:02,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:02,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:02,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:02,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:02,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267239073] [2024-02-02 16:09:02,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267239073] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:02,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:02,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 16:09:02,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303860545] [2024-02-02 16:09:02,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:02,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 16:09:02,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:02,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 16:09:02,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-02-02 16:09:02,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:02,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 98 transitions, 730 flow. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:02,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:02,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:02,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:03,122 INFO L124 PetriNetUnfolderBase]: 1737/3512 cut-off events. [2024-02-02 16:09:03,122 INFO L125 PetriNetUnfolderBase]: For 6915/6993 co-relation queries the response was YES. [2024-02-02 16:09:03,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10246 conditions, 3512 events. 1737/3512 cut-off events. For 6915/6993 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 25011 event pairs, 1003 based on Foata normal form. 48/3160 useless extension candidates. Maximal degree in co-relation 10199. Up to 2699 conditions per place. [2024-02-02 16:09:03,146 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 86 selfloop transitions, 21 changer transitions 0/124 dead transitions. [2024-02-02 16:09:03,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 124 transitions, 1033 flow [2024-02-02 16:09:03,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 16:09:03,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 16:09:03,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 222 transitions. [2024-02-02 16:09:03,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4344422700587084 [2024-02-02 16:09:03,148 INFO L175 Difference]: Start difference. First operand has 123 places, 98 transitions, 730 flow. Second operand 7 states and 222 transitions. [2024-02-02 16:09:03,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 124 transitions, 1033 flow [2024-02-02 16:09:03,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 124 transitions, 969 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-02-02 16:09:03,161 INFO L231 Difference]: Finished difference. Result has 124 places, 102 transitions, 763 flow [2024-02-02 16:09:03,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=763, PETRI_PLACES=124, PETRI_TRANSITIONS=102} [2024-02-02 16:09:03,162 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 47 predicate places. [2024-02-02 16:09:03,162 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 102 transitions, 763 flow [2024-02-02 16:09:03,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:03,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:03,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:03,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-02-02 16:09:03,162 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:03,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:03,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1634300157, now seen corresponding path program 1 times [2024-02-02 16:09:03,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:03,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280754044] [2024-02-02 16:09:03,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:03,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:03,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:03,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:03,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:03,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280754044] [2024-02-02 16:09:03,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280754044] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:03,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:03,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 16:09:03,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795001257] [2024-02-02 16:09:03,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:03,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 16:09:03,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:03,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 16:09:03,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-02-02 16:09:03,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:03,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 102 transitions, 763 flow. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:03,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:03,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:03,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:03,936 INFO L124 PetriNetUnfolderBase]: 1627/3322 cut-off events. [2024-02-02 16:09:03,937 INFO L125 PetriNetUnfolderBase]: For 7090/7107 co-relation queries the response was YES. [2024-02-02 16:09:03,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9874 conditions, 3322 events. 1627/3322 cut-off events. For 7090/7107 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 23648 event pairs, 1008 based on Foata normal form. 32/2985 useless extension candidates. Maximal degree in co-relation 9827. Up to 2451 conditions per place. [2024-02-02 16:09:03,953 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 76 selfloop transitions, 26 changer transitions 0/118 dead transitions. [2024-02-02 16:09:03,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 118 transitions, 1008 flow [2024-02-02 16:09:03,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 16:09:03,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 16:09:03,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 194 transitions. [2024-02-02 16:09:03,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4429223744292237 [2024-02-02 16:09:03,958 INFO L175 Difference]: Start difference. First operand has 124 places, 102 transitions, 763 flow. Second operand 6 states and 194 transitions. [2024-02-02 16:09:03,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 118 transitions, 1008 flow [2024-02-02 16:09:03,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 118 transitions, 967 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-02-02 16:09:03,970 INFO L231 Difference]: Finished difference. Result has 125 places, 102 transitions, 794 flow [2024-02-02 16:09:03,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=794, PETRI_PLACES=125, PETRI_TRANSITIONS=102} [2024-02-02 16:09:03,971 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 48 predicate places. [2024-02-02 16:09:03,971 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 102 transitions, 794 flow [2024-02-02 16:09:03,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:03,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:03,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:03,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-02-02 16:09:03,972 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:03,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:03,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1753976769, now seen corresponding path program 2 times [2024-02-02 16:09:03,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:03,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133004477] [2024-02-02 16:09:03,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:03,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:04,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:04,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:04,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133004477] [2024-02-02 16:09:04,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133004477] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:04,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:04,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 16:09:04,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589565293] [2024-02-02 16:09:04,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:04,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 16:09:04,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:04,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 16:09:04,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-02-02 16:09:04,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:04,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 102 transitions, 794 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:04,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:04,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:04,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:04,717 INFO L124 PetriNetUnfolderBase]: 1720/3495 cut-off events. [2024-02-02 16:09:04,718 INFO L125 PetriNetUnfolderBase]: For 7958/8031 co-relation queries the response was YES. [2024-02-02 16:09:04,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10681 conditions, 3495 events. 1720/3495 cut-off events. For 7958/8031 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 24974 event pairs, 997 based on Foata normal form. 39/3128 useless extension candidates. Maximal degree in co-relation 10633. Up to 2677 conditions per place. [2024-02-02 16:09:04,741 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 90 selfloop transitions, 19 changer transitions 0/126 dead transitions. [2024-02-02 16:09:04,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 126 transitions, 1099 flow [2024-02-02 16:09:04,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 16:09:04,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 16:09:04,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 220 transitions. [2024-02-02 16:09:04,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43052837573385516 [2024-02-02 16:09:04,743 INFO L175 Difference]: Start difference. First operand has 125 places, 102 transitions, 794 flow. Second operand 7 states and 220 transitions. [2024-02-02 16:09:04,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 126 transitions, 1099 flow [2024-02-02 16:09:04,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 126 transitions, 1025 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-02-02 16:09:04,758 INFO L231 Difference]: Finished difference. Result has 126 places, 106 transitions, 809 flow [2024-02-02 16:09:04,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=809, PETRI_PLACES=126, PETRI_TRANSITIONS=106} [2024-02-02 16:09:04,758 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 49 predicate places. [2024-02-02 16:09:04,758 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 106 transitions, 809 flow [2024-02-02 16:09:04,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:04,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:04,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:04,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-02-02 16:09:04,759 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:04,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:04,760 INFO L85 PathProgramCache]: Analyzing trace with hash 422017743, now seen corresponding path program 2 times [2024-02-02 16:09:04,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:04,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695169747] [2024-02-02 16:09:04,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:04,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:04,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:04,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:04,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:04,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695169747] [2024-02-02 16:09:04,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695169747] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:04,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:04,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 16:09:04,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178788874] [2024-02-02 16:09:04,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:04,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 16:09:04,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:04,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 16:09:04,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 16:09:04,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:04,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 106 transitions, 809 flow. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:04,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:04,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:04,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:05,402 INFO L124 PetriNetUnfolderBase]: 1637/3341 cut-off events. [2024-02-02 16:09:05,403 INFO L125 PetriNetUnfolderBase]: For 7444/7461 co-relation queries the response was YES. [2024-02-02 16:09:05,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10056 conditions, 3341 events. 1637/3341 cut-off events. For 7444/7461 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 23718 event pairs, 1005 based on Foata normal form. 26/2998 useless extension candidates. Maximal degree in co-relation 10008. Up to 2358 conditions per place. [2024-02-02 16:09:05,421 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 80 selfloop transitions, 32 changer transitions 0/128 dead transitions. [2024-02-02 16:09:05,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 128 transitions, 1094 flow [2024-02-02 16:09:05,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 16:09:05,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 16:09:05,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 223 transitions. [2024-02-02 16:09:05,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436399217221135 [2024-02-02 16:09:05,423 INFO L175 Difference]: Start difference. First operand has 126 places, 106 transitions, 809 flow. Second operand 7 states and 223 transitions. [2024-02-02 16:09:05,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 128 transitions, 1094 flow [2024-02-02 16:09:05,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 128 transitions, 1066 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-02-02 16:09:05,434 INFO L231 Difference]: Finished difference. Result has 129 places, 106 transitions, 854 flow [2024-02-02 16:09:05,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=781, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=854, PETRI_PLACES=129, PETRI_TRANSITIONS=106} [2024-02-02 16:09:05,434 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 52 predicate places. [2024-02-02 16:09:05,434 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 106 transitions, 854 flow [2024-02-02 16:09:05,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:05,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:05,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:05,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-02-02 16:09:05,435 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:05,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:05,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1753198359, now seen corresponding path program 3 times [2024-02-02 16:09:05,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:05,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070385968] [2024-02-02 16:09:05,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:05,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:05,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:05,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:05,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:05,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070385968] [2024-02-02 16:09:05,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070385968] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:05,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:05,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 16:09:05,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812385177] [2024-02-02 16:09:05,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:05,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 16:09:05,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:05,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 16:09:05,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 16:09:05,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:05,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 106 transitions, 854 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:05,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:05,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:05,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:06,176 INFO L124 PetriNetUnfolderBase]: 1710/3471 cut-off events. [2024-02-02 16:09:06,177 INFO L125 PetriNetUnfolderBase]: For 8272/8365 co-relation queries the response was YES. [2024-02-02 16:09:06,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10689 conditions, 3471 events. 1710/3471 cut-off events. For 8272/8365 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 24793 event pairs, 1002 based on Foata normal form. 62/3123 useless extension candidates. Maximal degree in co-relation 10641. Up to 2466 conditions per place. [2024-02-02 16:09:06,203 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 86 selfloop transitions, 29 changer transitions 0/132 dead transitions. [2024-02-02 16:09:06,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 132 transitions, 1157 flow [2024-02-02 16:09:06,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 16:09:06,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 16:09:06,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 227 transitions. [2024-02-02 16:09:06,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44422700587084146 [2024-02-02 16:09:06,206 INFO L175 Difference]: Start difference. First operand has 129 places, 106 transitions, 854 flow. Second operand 7 states and 227 transitions. [2024-02-02 16:09:06,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 132 transitions, 1157 flow [2024-02-02 16:09:06,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 132 transitions, 1089 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-02-02 16:09:06,225 INFO L231 Difference]: Finished difference. Result has 130 places, 108 transitions, 863 flow [2024-02-02 16:09:06,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=863, PETRI_PLACES=130, PETRI_TRANSITIONS=108} [2024-02-02 16:09:06,226 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 53 predicate places. [2024-02-02 16:09:06,226 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 108 transitions, 863 flow [2024-02-02 16:09:06,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:06,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:06,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:06,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-02-02 16:09:06,227 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:06,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:06,227 INFO L85 PathProgramCache]: Analyzing trace with hash -249829455, now seen corresponding path program 3 times [2024-02-02 16:09:06,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:06,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681784152] [2024-02-02 16:09:06,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:06,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:06,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:06,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:06,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:06,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681784152] [2024-02-02 16:09:06,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681784152] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:06,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:06,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 16:09:06,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155352977] [2024-02-02 16:09:06,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:06,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 16:09:06,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:06,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 16:09:06,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-02-02 16:09:06,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:06,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 108 transitions, 863 flow. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:06,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:06,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:06,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:07,064 INFO L124 PetriNetUnfolderBase]: 1753/3549 cut-off events. [2024-02-02 16:09:07,064 INFO L125 PetriNetUnfolderBase]: For 8672/8782 co-relation queries the response was YES. [2024-02-02 16:09:07,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11055 conditions, 3549 events. 1753/3549 cut-off events. For 8672/8782 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 25232 event pairs, 991 based on Foata normal form. 66/3212 useless extension candidates. Maximal degree in co-relation 11006. Up to 2674 conditions per place. [2024-02-02 16:09:07,085 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 96 selfloop transitions, 25 changer transitions 0/138 dead transitions. [2024-02-02 16:09:07,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 138 transitions, 1208 flow [2024-02-02 16:09:07,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 16:09:07,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 16:09:07,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 250 transitions. [2024-02-02 16:09:07,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4280821917808219 [2024-02-02 16:09:07,087 INFO L175 Difference]: Start difference. First operand has 130 places, 108 transitions, 863 flow. Second operand 8 states and 250 transitions. [2024-02-02 16:09:07,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 138 transitions, 1208 flow [2024-02-02 16:09:07,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 138 transitions, 1167 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-02 16:09:07,100 INFO L231 Difference]: Finished difference. Result has 134 places, 112 transitions, 935 flow [2024-02-02 16:09:07,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=822, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=935, PETRI_PLACES=134, PETRI_TRANSITIONS=112} [2024-02-02 16:09:07,100 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 57 predicate places. [2024-02-02 16:09:07,100 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 112 transitions, 935 flow [2024-02-02 16:09:07,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:07,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:07,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:07,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-02-02 16:09:07,101 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:07,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:07,102 INFO L85 PathProgramCache]: Analyzing trace with hash -252783811, now seen corresponding path program 4 times [2024-02-02 16:09:07,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:07,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155790406] [2024-02-02 16:09:07,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:07,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:07,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:07,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:07,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:07,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155790406] [2024-02-02 16:09:07,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155790406] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:07,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:07,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 16:09:07,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905841086] [2024-02-02 16:09:07,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:07,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 16:09:07,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:07,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 16:09:07,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-02-02 16:09:07,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:07,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 112 transitions, 935 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:07,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:07,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:07,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:07,852 INFO L124 PetriNetUnfolderBase]: 1743/3530 cut-off events. [2024-02-02 16:09:07,853 INFO L125 PetriNetUnfolderBase]: For 9740/9849 co-relation queries the response was YES. [2024-02-02 16:09:07,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11218 conditions, 3530 events. 1743/3530 cut-off events. For 9740/9849 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 25159 event pairs, 991 based on Foata normal form. 54/3172 useless extension candidates. Maximal degree in co-relation 11168. Up to 2660 conditions per place. [2024-02-02 16:09:07,870 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 89 selfloop transitions, 24 changer transitions 0/130 dead transitions. [2024-02-02 16:09:07,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 130 transitions, 1204 flow [2024-02-02 16:09:07,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 16:09:07,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 16:09:07,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 194 transitions. [2024-02-02 16:09:07,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4429223744292237 [2024-02-02 16:09:07,881 INFO L175 Difference]: Start difference. First operand has 134 places, 112 transitions, 935 flow. Second operand 6 states and 194 transitions. [2024-02-02 16:09:07,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 130 transitions, 1204 flow [2024-02-02 16:09:07,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 130 transitions, 1147 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-02-02 16:09:07,896 INFO L231 Difference]: Finished difference. Result has 134 places, 112 transitions, 937 flow [2024-02-02 16:09:07,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=937, PETRI_PLACES=134, PETRI_TRANSITIONS=112} [2024-02-02 16:09:07,896 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 57 predicate places. [2024-02-02 16:09:07,897 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 112 transitions, 937 flow [2024-02-02 16:09:07,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:07,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:07,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:07,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-02-02 16:09:07,897 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:07,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:07,898 INFO L85 PathProgramCache]: Analyzing trace with hash -252802685, now seen corresponding path program 4 times [2024-02-02 16:09:07,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:07,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621745549] [2024-02-02 16:09:07,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:07,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:07,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:08,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:08,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:08,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621745549] [2024-02-02 16:09:08,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621745549] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:08,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:08,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 16:09:08,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557831551] [2024-02-02 16:09:08,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:08,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 16:09:08,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:08,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 16:09:08,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-02-02 16:09:08,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:08,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 112 transitions, 937 flow. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:08,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:08,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:08,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:08,681 INFO L124 PetriNetUnfolderBase]: 1723/3525 cut-off events. [2024-02-02 16:09:08,682 INFO L125 PetriNetUnfolderBase]: For 9637/9740 co-relation queries the response was YES. [2024-02-02 16:09:08,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11065 conditions, 3525 events. 1723/3525 cut-off events. For 9637/9740 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 25098 event pairs, 784 based on Foata normal form. 54/3179 useless extension candidates. Maximal degree in co-relation 11014. Up to 2530 conditions per place. [2024-02-02 16:09:08,719 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 81 selfloop transitions, 35 changer transitions 0/133 dead transitions. [2024-02-02 16:09:08,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 133 transitions, 1220 flow [2024-02-02 16:09:08,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 16:09:08,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 16:09:08,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 199 transitions. [2024-02-02 16:09:08,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.454337899543379 [2024-02-02 16:09:08,721 INFO L175 Difference]: Start difference. First operand has 134 places, 112 transitions, 937 flow. Second operand 6 states and 199 transitions. [2024-02-02 16:09:08,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 133 transitions, 1220 flow [2024-02-02 16:09:08,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 133 transitions, 1161 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-02-02 16:09:08,772 INFO L231 Difference]: Finished difference. Result has 134 places, 112 transitions, 974 flow [2024-02-02 16:09:08,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=974, PETRI_PLACES=134, PETRI_TRANSITIONS=112} [2024-02-02 16:09:08,775 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 57 predicate places. [2024-02-02 16:09:08,775 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 112 transitions, 974 flow [2024-02-02 16:09:08,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:08,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:08,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:08,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-02-02 16:09:08,776 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:08,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:08,777 INFO L85 PathProgramCache]: Analyzing trace with hash 518153639, now seen corresponding path program 5 times [2024-02-02 16:09:08,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:08,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918326981] [2024-02-02 16:09:08,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:08,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:08,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:08,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:08,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918326981] [2024-02-02 16:09:08,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918326981] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:08,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:08,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 16:09:08,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656081090] [2024-02-02 16:09:08,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:08,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 16:09:08,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:08,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 16:09:08,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 16:09:09,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:09,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 112 transitions, 974 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:09,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:09,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:09,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:09,549 INFO L124 PetriNetUnfolderBase]: 1743/3522 cut-off events. [2024-02-02 16:09:09,549 INFO L125 PetriNetUnfolderBase]: For 10613/10713 co-relation queries the response was YES. [2024-02-02 16:09:09,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11396 conditions, 3522 events. 1743/3522 cut-off events. For 10613/10713 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 25082 event pairs, 987 based on Foata normal form. 74/3180 useless extension candidates. Maximal degree in co-relation 11345. Up to 2510 conditions per place. [2024-02-02 16:09:09,573 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 86 selfloop transitions, 32 changer transitions 0/135 dead transitions. [2024-02-02 16:09:09,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 135 transitions, 1275 flow [2024-02-02 16:09:09,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 16:09:09,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 16:09:09,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 200 transitions. [2024-02-02 16:09:09,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45662100456621 [2024-02-02 16:09:09,575 INFO L175 Difference]: Start difference. First operand has 134 places, 112 transitions, 974 flow. Second operand 6 states and 200 transitions. [2024-02-02 16:09:09,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 135 transitions, 1275 flow [2024-02-02 16:09:09,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 135 transitions, 1190 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-02-02 16:09:09,594 INFO L231 Difference]: Finished difference. Result has 134 places, 114 transitions, 973 flow [2024-02-02 16:09:09,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=889, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=973, PETRI_PLACES=134, PETRI_TRANSITIONS=114} [2024-02-02 16:09:09,594 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 57 predicate places. [2024-02-02 16:09:09,595 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 114 transitions, 973 flow [2024-02-02 16:09:09,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:09,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:09,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:09,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-02-02 16:09:09,595 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:09,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:09,596 INFO L85 PathProgramCache]: Analyzing trace with hash 544965539, now seen corresponding path program 6 times [2024-02-02 16:09:09,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:09,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895549169] [2024-02-02 16:09:09,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:09,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:09,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:09,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:09,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:09,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895549169] [2024-02-02 16:09:09,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895549169] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:09,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:09,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 16:09:09,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078508683] [2024-02-02 16:09:09,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:09,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 16:09:09,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:09,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 16:09:09,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 16:09:09,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:09,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 114 transitions, 973 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:09,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:09,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:09,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:10,249 INFO L124 PetriNetUnfolderBase]: 1765/3562 cut-off events. [2024-02-02 16:09:10,249 INFO L125 PetriNetUnfolderBase]: For 9482/9564 co-relation queries the response was YES. [2024-02-02 16:09:10,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11272 conditions, 3562 events. 1765/3562 cut-off events. For 9482/9564 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 25346 event pairs, 1001 based on Foata normal form. 76/3224 useless extension candidates. Maximal degree in co-relation 11221. Up to 2535 conditions per place. [2024-02-02 16:09:10,269 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 82 selfloop transitions, 39 changer transitions 0/138 dead transitions. [2024-02-02 16:09:10,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 138 transitions, 1307 flow [2024-02-02 16:09:10,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 16:09:10,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 16:09:10,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 197 transitions. [2024-02-02 16:09:10,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497716894977169 [2024-02-02 16:09:10,271 INFO L175 Difference]: Start difference. First operand has 134 places, 114 transitions, 973 flow. Second operand 6 states and 197 transitions. [2024-02-02 16:09:10,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 138 transitions, 1307 flow [2024-02-02 16:09:10,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 138 transitions, 1248 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-02-02 16:09:10,286 INFO L231 Difference]: Finished difference. Result has 137 places, 121 transitions, 1078 flow [2024-02-02 16:09:10,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=926, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1078, PETRI_PLACES=137, PETRI_TRANSITIONS=121} [2024-02-02 16:09:10,286 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 60 predicate places. [2024-02-02 16:09:10,286 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 121 transitions, 1078 flow [2024-02-02 16:09:10,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:10,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:10,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:10,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-02-02 16:09:10,287 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:10,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:10,287 INFO L85 PathProgramCache]: Analyzing trace with hash 919256150, now seen corresponding path program 1 times [2024-02-02 16:09:10,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:10,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461062116] [2024-02-02 16:09:10,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:10,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:10,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:10,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:10,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:10,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461062116] [2024-02-02 16:09:10,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461062116] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:10,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:10,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 16:09:10,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761720223] [2024-02-02 16:09:10,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:10,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 16:09:10,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:10,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 16:09:10,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 16:09:10,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-02 16:09:10,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 121 transitions, 1078 flow. Second operand has 7 states, 7 states have (on average 32.57142857142857) internal successors, (228), 7 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:10,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:10,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-02 16:09:10,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:10,875 INFO L124 PetriNetUnfolderBase]: 1255/2712 cut-off events. [2024-02-02 16:09:10,876 INFO L125 PetriNetUnfolderBase]: For 9257/9321 co-relation queries the response was YES. [2024-02-02 16:09:10,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8818 conditions, 2712 events. 1255/2712 cut-off events. For 9257/9321 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 19806 event pairs, 714 based on Foata normal form. 46/2451 useless extension candidates. Maximal degree in co-relation 8766. Up to 1874 conditions per place. [2024-02-02 16:09:10,889 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 109 selfloop transitions, 21 changer transitions 0/156 dead transitions. [2024-02-02 16:09:10,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 156 transitions, 1571 flow [2024-02-02 16:09:10,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 16:09:10,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 16:09:10,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 251 transitions. [2024-02-02 16:09:10,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5730593607305936 [2024-02-02 16:09:10,891 INFO L175 Difference]: Start difference. First operand has 137 places, 121 transitions, 1078 flow. Second operand 6 states and 251 transitions. [2024-02-02 16:09:10,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 156 transitions, 1571 flow [2024-02-02 16:09:10,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 156 transitions, 1510 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-02-02 16:09:10,902 INFO L231 Difference]: Finished difference. Result has 141 places, 135 transitions, 1247 flow [2024-02-02 16:09:10,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1021, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1247, PETRI_PLACES=141, PETRI_TRANSITIONS=135} [2024-02-02 16:09:10,903 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 64 predicate places. [2024-02-02 16:09:10,903 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 135 transitions, 1247 flow [2024-02-02 16:09:10,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.57142857142857) internal successors, (228), 7 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:10,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:10,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:10,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-02-02 16:09:10,904 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:10,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:10,904 INFO L85 PathProgramCache]: Analyzing trace with hash -531052406, now seen corresponding path program 1 times [2024-02-02 16:09:10,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:10,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509119894] [2024-02-02 16:09:10,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:10,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:10,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:11,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:11,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:11,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509119894] [2024-02-02 16:09:11,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509119894] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:11,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:11,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 16:09:11,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816380218] [2024-02-02 16:09:11,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:11,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 16:09:11,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:11,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 16:09:11,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 16:09:11,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-02 16:09:11,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 135 transitions, 1247 flow. Second operand has 7 states, 7 states have (on average 32.57142857142857) internal successors, (228), 7 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:11,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:11,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-02 16:09:11,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:11,418 INFO L124 PetriNetUnfolderBase]: 1225/2603 cut-off events. [2024-02-02 16:09:11,418 INFO L125 PetriNetUnfolderBase]: For 9172/9229 co-relation queries the response was YES. [2024-02-02 16:09:11,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8640 conditions, 2603 events. 1225/2603 cut-off events. For 9172/9229 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 18471 event pairs, 706 based on Foata normal form. 57/2376 useless extension candidates. Maximal degree in co-relation 8586. Up to 1860 conditions per place. [2024-02-02 16:09:11,436 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 114 selfloop transitions, 28 changer transitions 0/168 dead transitions. [2024-02-02 16:09:11,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 168 transitions, 1774 flow [2024-02-02 16:09:11,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 16:09:11,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 16:09:11,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 247 transitions. [2024-02-02 16:09:11,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5639269406392694 [2024-02-02 16:09:11,438 INFO L175 Difference]: Start difference. First operand has 141 places, 135 transitions, 1247 flow. Second operand 6 states and 247 transitions. [2024-02-02 16:09:11,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 168 transitions, 1774 flow [2024-02-02 16:09:11,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 168 transitions, 1772 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-02-02 16:09:11,453 INFO L231 Difference]: Finished difference. Result has 150 places, 154 transitions, 1557 flow [2024-02-02 16:09:11,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1245, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1557, PETRI_PLACES=150, PETRI_TRANSITIONS=154} [2024-02-02 16:09:11,453 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 73 predicate places. [2024-02-02 16:09:11,453 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 154 transitions, 1557 flow [2024-02-02 16:09:11,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.57142857142857) internal successors, (228), 7 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:11,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:11,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:11,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-02-02 16:09:11,454 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:11,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:11,454 INFO L85 PathProgramCache]: Analyzing trace with hash 2129257844, now seen corresponding path program 1 times [2024-02-02 16:09:11,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:11,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398467687] [2024-02-02 16:09:11,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:11,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:11,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:11,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:11,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:11,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398467687] [2024-02-02 16:09:11,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398467687] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:11,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:11,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 16:09:11,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552296938] [2024-02-02 16:09:11,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:11,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 16:09:11,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:11,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 16:09:11,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-02-02 16:09:11,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-02 16:09:11,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 154 transitions, 1557 flow. Second operand has 8 states, 8 states have (on average 32.375) internal successors, (259), 8 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:11,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:11,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-02 16:09:11,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:12,298 INFO L124 PetriNetUnfolderBase]: 1419/2936 cut-off events. [2024-02-02 16:09:12,308 INFO L125 PetriNetUnfolderBase]: For 12199/12261 co-relation queries the response was YES. [2024-02-02 16:09:12,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10216 conditions, 2936 events. 1419/2936 cut-off events. For 12199/12261 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 20936 event pairs, 560 based on Foata normal form. 108/2805 useless extension candidates. Maximal degree in co-relation 10156. Up to 1725 conditions per place. [2024-02-02 16:09:12,329 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 93 selfloop transitions, 71 changer transitions 0/190 dead transitions. [2024-02-02 16:09:12,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 190 transitions, 2057 flow [2024-02-02 16:09:12,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 16:09:12,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 16:09:12,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 332 transitions. [2024-02-02 16:09:12,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5684931506849316 [2024-02-02 16:09:12,331 INFO L175 Difference]: Start difference. First operand has 150 places, 154 transitions, 1557 flow. Second operand 8 states and 332 transitions. [2024-02-02 16:09:12,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 190 transitions, 2057 flow [2024-02-02 16:09:12,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 190 transitions, 2051 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-02-02 16:09:12,350 INFO L231 Difference]: Finished difference. Result has 159 places, 158 transitions, 1744 flow [2024-02-02 16:09:12,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1551, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1744, PETRI_PLACES=159, PETRI_TRANSITIONS=158} [2024-02-02 16:09:12,352 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 82 predicate places. [2024-02-02 16:09:12,352 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 158 transitions, 1744 flow [2024-02-02 16:09:12,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.375) internal successors, (259), 8 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:12,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:12,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:12,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-02-02 16:09:12,353 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:12,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:12,354 INFO L85 PathProgramCache]: Analyzing trace with hash 643868386, now seen corresponding path program 2 times [2024-02-02 16:09:12,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:12,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490834231] [2024-02-02 16:09:12,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:12,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:12,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:12,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:12,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:12,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490834231] [2024-02-02 16:09:12,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490834231] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:12,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:12,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 16:09:12,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239368043] [2024-02-02 16:09:12,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:12,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 16:09:12,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:12,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 16:09:12,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-02-02 16:09:12,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-02 16:09:12,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 158 transitions, 1744 flow. Second operand has 8 states, 8 states have (on average 32.375) internal successors, (259), 8 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:12,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:12,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-02 16:09:12,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:13,080 INFO L124 PetriNetUnfolderBase]: 1499/3070 cut-off events. [2024-02-02 16:09:13,080 INFO L125 PetriNetUnfolderBase]: For 15538/15600 co-relation queries the response was YES. [2024-02-02 16:09:13,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11379 conditions, 3070 events. 1499/3070 cut-off events. For 15538/15600 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 22003 event pairs, 631 based on Foata normal form. 76/2907 useless extension candidates. Maximal degree in co-relation 11315. Up to 1878 conditions per place. [2024-02-02 16:09:13,105 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 91 selfloop transitions, 69 changer transitions 0/186 dead transitions. [2024-02-02 16:09:13,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 186 transitions, 2212 flow [2024-02-02 16:09:13,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 16:09:13,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 16:09:13,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 259 transitions. [2024-02-02 16:09:13,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.591324200913242 [2024-02-02 16:09:13,107 INFO L175 Difference]: Start difference. First operand has 159 places, 158 transitions, 1744 flow. Second operand 6 states and 259 transitions. [2024-02-02 16:09:13,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 186 transitions, 2212 flow [2024-02-02 16:09:13,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 186 transitions, 2115 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-02-02 16:09:13,135 INFO L231 Difference]: Finished difference. Result has 161 places, 160 transitions, 1813 flow [2024-02-02 16:09:13,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1649, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1813, PETRI_PLACES=161, PETRI_TRANSITIONS=160} [2024-02-02 16:09:13,136 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 84 predicate places. [2024-02-02 16:09:13,136 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 160 transitions, 1813 flow [2024-02-02 16:09:13,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.375) internal successors, (259), 8 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:13,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:13,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:13,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-02-02 16:09:13,136 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:13,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:13,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1053457694, now seen corresponding path program 3 times [2024-02-02 16:09:13,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:13,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903250983] [2024-02-02 16:09:13,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:13,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:13,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:13,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:13,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:13,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903250983] [2024-02-02 16:09:13,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903250983] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:13,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:13,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 16:09:13,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839972950] [2024-02-02 16:09:13,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:13,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 16:09:13,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:13,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 16:09:13,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-02-02 16:09:13,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-02 16:09:13,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 160 transitions, 1813 flow. Second operand has 8 states, 8 states have (on average 32.375) internal successors, (259), 8 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:13,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:13,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-02 16:09:13,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:13,889 INFO L124 PetriNetUnfolderBase]: 1467/3022 cut-off events. [2024-02-02 16:09:13,890 INFO L125 PetriNetUnfolderBase]: For 15630/15692 co-relation queries the response was YES. [2024-02-02 16:09:13,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11294 conditions, 3022 events. 1467/3022 cut-off events. For 15630/15692 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 21601 event pairs, 611 based on Foata normal form. 76/2859 useless extension candidates. Maximal degree in co-relation 11228. Up to 1870 conditions per place. [2024-02-02 16:09:13,907 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 93 selfloop transitions, 69 changer transitions 0/188 dead transitions. [2024-02-02 16:09:13,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 188 transitions, 2257 flow [2024-02-02 16:09:13,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 16:09:13,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 16:09:13,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 293 transitions. [2024-02-02 16:09:13,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5733855185909981 [2024-02-02 16:09:13,909 INFO L175 Difference]: Start difference. First operand has 161 places, 160 transitions, 1813 flow. Second operand 7 states and 293 transitions. [2024-02-02 16:09:13,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 188 transitions, 2257 flow [2024-02-02 16:09:13,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 188 transitions, 2156 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-02-02 16:09:13,935 INFO L231 Difference]: Finished difference. Result has 165 places, 160 transitions, 1860 flow [2024-02-02 16:09:13,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1712, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1860, PETRI_PLACES=165, PETRI_TRANSITIONS=160} [2024-02-02 16:09:13,935 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 88 predicate places. [2024-02-02 16:09:13,936 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 160 transitions, 1860 flow [2024-02-02 16:09:13,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.375) internal successors, (259), 8 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:13,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:13,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:13,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-02-02 16:09:13,936 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:13,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:13,937 INFO L85 PathProgramCache]: Analyzing trace with hash 718560932, now seen corresponding path program 4 times [2024-02-02 16:09:13,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:13,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609035482] [2024-02-02 16:09:13,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:13,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:13,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:14,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:14,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:14,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609035482] [2024-02-02 16:09:14,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609035482] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:14,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:14,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 16:09:14,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014241928] [2024-02-02 16:09:14,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:14,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 16:09:14,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:14,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 16:09:14,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-02-02 16:09:14,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-02 16:09:14,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 160 transitions, 1860 flow. Second operand has 8 states, 8 states have (on average 32.375) internal successors, (259), 8 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:14,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:14,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-02 16:09:14,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:14,544 INFO L124 PetriNetUnfolderBase]: 1211/2478 cut-off events. [2024-02-02 16:09:14,545 INFO L125 PetriNetUnfolderBase]: For 15189/15251 co-relation queries the response was YES. [2024-02-02 16:09:14,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9657 conditions, 2478 events. 1211/2478 cut-off events. For 15189/15251 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 16842 event pairs, 451 based on Foata normal form. 92/2405 useless extension candidates. Maximal degree in co-relation 9590. Up to 1325 conditions per place. [2024-02-02 16:09:14,561 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 90 selfloop transitions, 77 changer transitions 0/193 dead transitions. [2024-02-02 16:09:14,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 193 transitions, 2340 flow [2024-02-02 16:09:14,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 16:09:14,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 16:09:14,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 330 transitions. [2024-02-02 16:09:14,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.565068493150685 [2024-02-02 16:09:14,562 INFO L175 Difference]: Start difference. First operand has 165 places, 160 transitions, 1860 flow. Second operand 8 states and 330 transitions. [2024-02-02 16:09:14,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 193 transitions, 2340 flow [2024-02-02 16:09:14,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 193 transitions, 2157 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-02-02 16:09:14,586 INFO L231 Difference]: Finished difference. Result has 166 places, 162 transitions, 1860 flow [2024-02-02 16:09:14,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1677, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1860, PETRI_PLACES=166, PETRI_TRANSITIONS=162} [2024-02-02 16:09:14,587 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 89 predicate places. [2024-02-02 16:09:14,587 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 162 transitions, 1860 flow [2024-02-02 16:09:14,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.375) internal successors, (259), 8 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:14,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:14,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:14,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-02-02 16:09:14,588 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:14,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:14,588 INFO L85 PathProgramCache]: Analyzing trace with hash 2014685492, now seen corresponding path program 1 times [2024-02-02 16:09:14,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:14,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442478967] [2024-02-02 16:09:14,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:14,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:14,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:14,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:14,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:14,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442478967] [2024-02-02 16:09:14,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442478967] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:14,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:14,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:09:14,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220253053] [2024-02-02 16:09:14,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:14,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:09:14,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:14,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:09:14,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:09:14,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:14,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 162 transitions, 1860 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:14,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:14,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:14,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:15,478 INFO L124 PetriNetUnfolderBase]: 1646/3208 cut-off events. [2024-02-02 16:09:15,478 INFO L125 PetriNetUnfolderBase]: For 16323/16434 co-relation queries the response was YES. [2024-02-02 16:09:15,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12337 conditions, 3208 events. 1646/3208 cut-off events. For 16323/16434 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 20825 event pairs, 522 based on Foata normal form. 69/3074 useless extension candidates. Maximal degree in co-relation 12269. Up to 1749 conditions per place. [2024-02-02 16:09:15,496 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 123 selfloop transitions, 69 changer transitions 0/209 dead transitions. [2024-02-02 16:09:15,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 209 transitions, 2414 flow [2024-02-02 16:09:15,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-02 16:09:15,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-02 16:09:15,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 318 transitions. [2024-02-02 16:09:15,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43561643835616437 [2024-02-02 16:09:15,497 INFO L175 Difference]: Start difference. First operand has 166 places, 162 transitions, 1860 flow. Second operand 10 states and 318 transitions. [2024-02-02 16:09:15,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 209 transitions, 2414 flow [2024-02-02 16:09:15,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 209 transitions, 2253 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-02-02 16:09:15,531 INFO L231 Difference]: Finished difference. Result has 170 places, 162 transitions, 1844 flow [2024-02-02 16:09:15,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1699, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1844, PETRI_PLACES=170, PETRI_TRANSITIONS=162} [2024-02-02 16:09:15,531 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 93 predicate places. [2024-02-02 16:09:15,531 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 162 transitions, 1844 flow [2024-02-02 16:09:15,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:15,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:15,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:15,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-02-02 16:09:15,532 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:15,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:15,532 INFO L85 PathProgramCache]: Analyzing trace with hash -149576838, now seen corresponding path program 1 times [2024-02-02 16:09:15,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:15,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954496377] [2024-02-02 16:09:15,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:15,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:15,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:15,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:15,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:15,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954496377] [2024-02-02 16:09:15,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954496377] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:15,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:15,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:09:15,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986842958] [2024-02-02 16:09:15,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:15,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:09:15,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:15,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:09:15,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:09:15,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:15,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 162 transitions, 1844 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:15,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:15,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:15,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:16,348 INFO L124 PetriNetUnfolderBase]: 1671/3244 cut-off events. [2024-02-02 16:09:16,348 INFO L125 PetriNetUnfolderBase]: For 16548/16583 co-relation queries the response was YES. [2024-02-02 16:09:16,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12598 conditions, 3244 events. 1671/3244 cut-off events. For 16548/16583 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 21269 event pairs, 531 based on Foata normal form. 44/3098 useless extension candidates. Maximal degree in co-relation 12529. Up to 1678 conditions per place. [2024-02-02 16:09:16,377 INFO L140 encePairwiseOnDemand]: 59/73 looper letters, 118 selfloop transitions, 80 changer transitions 0/215 dead transitions. [2024-02-02 16:09:16,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 215 transitions, 2453 flow [2024-02-02 16:09:16,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-02 16:09:16,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-02 16:09:16,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 324 transitions. [2024-02-02 16:09:16,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4438356164383562 [2024-02-02 16:09:16,379 INFO L175 Difference]: Start difference. First operand has 170 places, 162 transitions, 1844 flow. Second operand 10 states and 324 transitions. [2024-02-02 16:09:16,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 215 transitions, 2453 flow [2024-02-02 16:09:16,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 215 transitions, 2325 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-02-02 16:09:16,420 INFO L231 Difference]: Finished difference. Result has 173 places, 167 transitions, 1924 flow [2024-02-02 16:09:16,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1720, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1924, PETRI_PLACES=173, PETRI_TRANSITIONS=167} [2024-02-02 16:09:16,421 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 96 predicate places. [2024-02-02 16:09:16,421 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 167 transitions, 1924 flow [2024-02-02 16:09:16,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:16,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:16,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:16,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-02-02 16:09:16,422 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:16,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:16,422 INFO L85 PathProgramCache]: Analyzing trace with hash 696897129, now seen corresponding path program 1 times [2024-02-02 16:09:16,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:16,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171909977] [2024-02-02 16:09:16,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:16,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:16,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:16,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:16,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:16,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171909977] [2024-02-02 16:09:16,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171909977] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:16,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:16,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 16:09:16,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862839688] [2024-02-02 16:09:16,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:16,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 16:09:16,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:16,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 16:09:16,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 16:09:16,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:16,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 167 transitions, 1924 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:16,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:16,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:16,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:17,172 INFO L124 PetriNetUnfolderBase]: 1689/3248 cut-off events. [2024-02-02 16:09:17,172 INFO L125 PetriNetUnfolderBase]: For 17456/17509 co-relation queries the response was YES. [2024-02-02 16:09:17,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13258 conditions, 3248 events. 1689/3248 cut-off events. For 17456/17509 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 21262 event pairs, 703 based on Foata normal form. 36/3094 useless extension candidates. Maximal degree in co-relation 13187. Up to 2478 conditions per place. [2024-02-02 16:09:17,196 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 156 selfloop transitions, 27 changer transitions 0/200 dead transitions. [2024-02-02 16:09:17,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 200 transitions, 2436 flow [2024-02-02 16:09:17,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 16:09:17,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 16:09:17,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 227 transitions. [2024-02-02 16:09:17,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44422700587084146 [2024-02-02 16:09:17,198 INFO L175 Difference]: Start difference. First operand has 173 places, 167 transitions, 1924 flow. Second operand 7 states and 227 transitions. [2024-02-02 16:09:17,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 200 transitions, 2436 flow [2024-02-02 16:09:17,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 200 transitions, 2298 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-02-02 16:09:17,239 INFO L231 Difference]: Finished difference. Result has 174 places, 174 transitions, 1900 flow [2024-02-02 16:09:17,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1788, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1900, PETRI_PLACES=174, PETRI_TRANSITIONS=174} [2024-02-02 16:09:17,239 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 97 predicate places. [2024-02-02 16:09:17,239 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 174 transitions, 1900 flow [2024-02-02 16:09:17,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:17,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:17,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:17,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-02-02 16:09:17,240 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:17,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:17,241 INFO L85 PathProgramCache]: Analyzing trace with hash 696892479, now seen corresponding path program 2 times [2024-02-02 16:09:17,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:17,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555426151] [2024-02-02 16:09:17,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:17,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:17,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:17,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:17,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555426151] [2024-02-02 16:09:17,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555426151] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:17,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:17,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 16:09:17,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417862637] [2024-02-02 16:09:17,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:17,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 16:09:17,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:17,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 16:09:17,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 16:09:17,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:17,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 174 transitions, 1900 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:17,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:17,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:17,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:17,997 INFO L124 PetriNetUnfolderBase]: 1683/3238 cut-off events. [2024-02-02 16:09:17,998 INFO L125 PetriNetUnfolderBase]: For 16341/16394 co-relation queries the response was YES. [2024-02-02 16:09:18,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13066 conditions, 3238 events. 1683/3238 cut-off events. For 16341/16394 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 21263 event pairs, 690 based on Foata normal form. 36/3084 useless extension candidates. Maximal degree in co-relation 12993. Up to 2478 conditions per place. [2024-02-02 16:09:18,027 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 155 selfloop transitions, 28 changer transitions 0/200 dead transitions. [2024-02-02 16:09:18,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 200 transitions, 2368 flow [2024-02-02 16:09:18,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 16:09:18,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 16:09:18,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 227 transitions. [2024-02-02 16:09:18,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44422700587084146 [2024-02-02 16:09:18,029 INFO L175 Difference]: Start difference. First operand has 174 places, 174 transitions, 1900 flow. Second operand 7 states and 227 transitions. [2024-02-02 16:09:18,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 200 transitions, 2368 flow [2024-02-02 16:09:18,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 200 transitions, 2330 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-02-02 16:09:18,074 INFO L231 Difference]: Finished difference. Result has 178 places, 174 transitions, 1923 flow [2024-02-02 16:09:18,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1862, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1923, PETRI_PLACES=178, PETRI_TRANSITIONS=174} [2024-02-02 16:09:18,074 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 101 predicate places. [2024-02-02 16:09:18,075 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 174 transitions, 1923 flow [2024-02-02 16:09:18,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:18,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:18,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:18,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-02-02 16:09:18,077 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:18,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:18,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1352345222, now seen corresponding path program 2 times [2024-02-02 16:09:18,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:18,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398923578] [2024-02-02 16:09:18,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:18,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:18,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:18,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:18,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:18,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398923578] [2024-02-02 16:09:18,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398923578] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:18,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:18,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:09:18,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33516275] [2024-02-02 16:09:18,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:18,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:09:18,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:18,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:09:18,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:09:18,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:18,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 174 transitions, 1923 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:18,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:18,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:18,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:19,169 INFO L124 PetriNetUnfolderBase]: 2241/4159 cut-off events. [2024-02-02 16:09:19,170 INFO L125 PetriNetUnfolderBase]: For 19960/20172 co-relation queries the response was YES. [2024-02-02 16:09:19,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16708 conditions, 4159 events. 2241/4159 cut-off events. For 19960/20172 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 27497 event pairs, 826 based on Foata normal form. 93/4010 useless extension candidates. Maximal degree in co-relation 16634. Up to 2887 conditions per place. [2024-02-02 16:09:19,199 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 151 selfloop transitions, 51 changer transitions 0/223 dead transitions. [2024-02-02 16:09:19,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 223 transitions, 2567 flow [2024-02-02 16:09:19,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-02 16:09:19,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-02 16:09:19,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 313 transitions. [2024-02-02 16:09:19,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42876712328767125 [2024-02-02 16:09:19,201 INFO L175 Difference]: Start difference. First operand has 178 places, 174 transitions, 1923 flow. Second operand 10 states and 313 transitions. [2024-02-02 16:09:19,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 223 transitions, 2567 flow [2024-02-02 16:09:19,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 223 transitions, 2509 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-02-02 16:09:19,248 INFO L231 Difference]: Finished difference. Result has 184 places, 180 transitions, 2050 flow [2024-02-02 16:09:19,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1867, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2050, PETRI_PLACES=184, PETRI_TRANSITIONS=180} [2024-02-02 16:09:19,249 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 107 predicate places. [2024-02-02 16:09:19,249 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 180 transitions, 2050 flow [2024-02-02 16:09:19,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:19,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:19,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:19,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-02-02 16:09:19,249 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:19,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:19,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1151486530, now seen corresponding path program 2 times [2024-02-02 16:09:19,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:19,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572646702] [2024-02-02 16:09:19,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:19,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:19,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:19,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:19,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:19,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572646702] [2024-02-02 16:09:19,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572646702] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:19,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:19,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:09:19,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363597927] [2024-02-02 16:09:19,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:19,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:09:19,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:19,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:09:19,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:09:19,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:19,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 180 transitions, 2050 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:19,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:19,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:19,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:20,200 INFO L124 PetriNetUnfolderBase]: 1903/3631 cut-off events. [2024-02-02 16:09:20,201 INFO L125 PetriNetUnfolderBase]: For 20278/20331 co-relation queries the response was YES. [2024-02-02 16:09:20,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15234 conditions, 3631 events. 1903/3631 cut-off events. For 20278/20331 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 24468 event pairs, 720 based on Foata normal form. 68/3509 useless extension candidates. Maximal degree in co-relation 15158. Up to 1908 conditions per place. [2024-02-02 16:09:20,229 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 120 selfloop transitions, 75 changer transitions 0/212 dead transitions. [2024-02-02 16:09:20,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 212 transitions, 2605 flow [2024-02-02 16:09:20,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 16:09:20,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 16:09:20,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 259 transitions. [2024-02-02 16:09:20,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4434931506849315 [2024-02-02 16:09:20,231 INFO L175 Difference]: Start difference. First operand has 184 places, 180 transitions, 2050 flow. Second operand 8 states and 259 transitions. [2024-02-02 16:09:20,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 212 transitions, 2605 flow [2024-02-02 16:09:20,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 212 transitions, 2516 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-02-02 16:09:20,280 INFO L231 Difference]: Finished difference. Result has 185 places, 180 transitions, 2125 flow [2024-02-02 16:09:20,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1961, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2125, PETRI_PLACES=185, PETRI_TRANSITIONS=180} [2024-02-02 16:09:20,281 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 108 predicate places. [2024-02-02 16:09:20,281 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 180 transitions, 2125 flow [2024-02-02 16:09:20,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:20,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:20,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:20,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-02-02 16:09:20,281 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:20,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:20,282 INFO L85 PathProgramCache]: Analyzing trace with hash -978584176, now seen corresponding path program 3 times [2024-02-02 16:09:20,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:20,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309725797] [2024-02-02 16:09:20,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:20,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:20,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:20,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:20,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:20,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309725797] [2024-02-02 16:09:20,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309725797] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:20,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:20,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:09:20,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15203893] [2024-02-02 16:09:20,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:20,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:09:20,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:20,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:09:20,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:09:20,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:20,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 180 transitions, 2125 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:20,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:20,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:20,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:21,332 INFO L124 PetriNetUnfolderBase]: 2057/3855 cut-off events. [2024-02-02 16:09:21,332 INFO L125 PetriNetUnfolderBase]: For 24116/24325 co-relation queries the response was YES. [2024-02-02 16:09:21,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16425 conditions, 3855 events. 2057/3855 cut-off events. For 24116/24325 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 25250 event pairs, 766 based on Foata normal form. 120/3739 useless extension candidates. Maximal degree in co-relation 16348. Up to 2773 conditions per place. [2024-02-02 16:09:21,363 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 152 selfloop transitions, 51 changer transitions 0/224 dead transitions. [2024-02-02 16:09:21,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 224 transitions, 2701 flow [2024-02-02 16:09:21,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-02 16:09:21,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-02 16:09:21,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 336 transitions. [2024-02-02 16:09:21,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41843088418430885 [2024-02-02 16:09:21,373 INFO L175 Difference]: Start difference. First operand has 185 places, 180 transitions, 2125 flow. Second operand 11 states and 336 transitions. [2024-02-02 16:09:21,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 224 transitions, 2701 flow [2024-02-02 16:09:21,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 224 transitions, 2547 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-02-02 16:09:21,432 INFO L231 Difference]: Finished difference. Result has 189 places, 180 transitions, 2083 flow [2024-02-02 16:09:21,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1971, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2083, PETRI_PLACES=189, PETRI_TRANSITIONS=180} [2024-02-02 16:09:21,434 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 112 predicate places. [2024-02-02 16:09:21,435 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 180 transitions, 2083 flow [2024-02-02 16:09:21,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:21,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:21,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:21,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-02-02 16:09:21,437 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:21,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:21,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1152143110, now seen corresponding path program 3 times [2024-02-02 16:09:21,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:21,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987198507] [2024-02-02 16:09:21,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:21,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:21,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:21,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:21,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:21,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987198507] [2024-02-02 16:09:21,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987198507] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:21,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:21,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:09:21,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601695359] [2024-02-02 16:09:21,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:21,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:09:21,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:21,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:09:21,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:09:21,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:21,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 180 transitions, 2083 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:21,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:21,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:21,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:22,349 INFO L124 PetriNetUnfolderBase]: 1673/3263 cut-off events. [2024-02-02 16:09:22,350 INFO L125 PetriNetUnfolderBase]: For 20188/20241 co-relation queries the response was YES. [2024-02-02 16:09:22,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13710 conditions, 3263 events. 1673/3263 cut-off events. For 20188/20241 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 21611 event pairs, 630 based on Foata normal form. 104/3177 useless extension candidates. Maximal degree in co-relation 13632. Up to 1872 conditions per place. [2024-02-02 16:09:22,379 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 121 selfloop transitions, 75 changer transitions 0/213 dead transitions. [2024-02-02 16:09:22,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 213 transitions, 2642 flow [2024-02-02 16:09:22,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-02 16:09:22,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-02 16:09:22,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 282 transitions. [2024-02-02 16:09:22,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4292237442922374 [2024-02-02 16:09:22,381 INFO L175 Difference]: Start difference. First operand has 189 places, 180 transitions, 2083 flow. Second operand 9 states and 282 transitions. [2024-02-02 16:09:22,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 213 transitions, 2642 flow [2024-02-02 16:09:22,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 213 transitions, 2535 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-02-02 16:09:22,432 INFO L231 Difference]: Finished difference. Result has 188 places, 180 transitions, 2144 flow [2024-02-02 16:09:22,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1976, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2144, PETRI_PLACES=188, PETRI_TRANSITIONS=180} [2024-02-02 16:09:22,433 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 111 predicate places. [2024-02-02 16:09:22,433 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 180 transitions, 2144 flow [2024-02-02 16:09:22,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:22,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:22,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:22,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-02-02 16:09:22,433 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:22,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:22,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1833185391, now seen corresponding path program 3 times [2024-02-02 16:09:22,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:22,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901100431] [2024-02-02 16:09:22,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:22,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:22,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:22,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:22,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:22,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901100431] [2024-02-02 16:09:22,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901100431] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:22,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:22,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 16:09:22,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451664511] [2024-02-02 16:09:22,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:22,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 16:09:22,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:22,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 16:09:22,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 16:09:22,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:22,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 180 transitions, 2144 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:22,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:22,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:22,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:23,168 INFO L124 PetriNetUnfolderBase]: 1667/3221 cut-off events. [2024-02-02 16:09:23,168 INFO L125 PetriNetUnfolderBase]: For 21285/21345 co-relation queries the response was YES. [2024-02-02 16:09:23,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13897 conditions, 3221 events. 1667/3221 cut-off events. For 21285/21345 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 21268 event pairs, 733 based on Foata normal form. 38/3069 useless extension candidates. Maximal degree in co-relation 13818. Up to 2462 conditions per place. [2024-02-02 16:09:23,193 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 157 selfloop transitions, 32 changer transitions 0/206 dead transitions. [2024-02-02 16:09:23,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 206 transitions, 2636 flow [2024-02-02 16:09:23,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 16:09:23,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 16:09:23,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 224 transitions. [2024-02-02 16:09:23,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4383561643835616 [2024-02-02 16:09:23,195 INFO L175 Difference]: Start difference. First operand has 188 places, 180 transitions, 2144 flow. Second operand 7 states and 224 transitions. [2024-02-02 16:09:23,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 206 transitions, 2636 flow [2024-02-02 16:09:23,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 206 transitions, 2482 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-02-02 16:09:23,242 INFO L231 Difference]: Finished difference. Result has 188 places, 186 transitions, 2125 flow [2024-02-02 16:09:23,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1994, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2125, PETRI_PLACES=188, PETRI_TRANSITIONS=186} [2024-02-02 16:09:23,242 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 111 predicate places. [2024-02-02 16:09:23,243 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 186 transitions, 2125 flow [2024-02-02 16:09:23,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:23,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:23,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:23,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-02-02 16:09:23,243 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:23,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:23,244 INFO L85 PathProgramCache]: Analyzing trace with hash 166533436, now seen corresponding path program 4 times [2024-02-02 16:09:23,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:23,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708429138] [2024-02-02 16:09:23,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:23,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:23,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:23,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:23,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:23,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708429138] [2024-02-02 16:09:23,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708429138] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:23,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:23,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:09:23,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062235465] [2024-02-02 16:09:23,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:23,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:09:23,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:23,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:09:23,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:09:23,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:23,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 186 transitions, 2125 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:23,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:23,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:23,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:24,261 INFO L124 PetriNetUnfolderBase]: 2064/3871 cut-off events. [2024-02-02 16:09:24,261 INFO L125 PetriNetUnfolderBase]: For 22419/22659 co-relation queries the response was YES. [2024-02-02 16:09:24,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16584 conditions, 3871 events. 2064/3871 cut-off events. For 22419/22659 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 25491 event pairs, 697 based on Foata normal form. 106/3730 useless extension candidates. Maximal degree in co-relation 16503. Up to 2841 conditions per place. [2024-02-02 16:09:24,296 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 174 selfloop transitions, 43 changer transitions 0/240 dead transitions. [2024-02-02 16:09:24,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 240 transitions, 2833 flow [2024-02-02 16:09:24,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-02 16:09:24,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-02 16:09:24,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 337 transitions. [2024-02-02 16:09:24,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41967621419676215 [2024-02-02 16:09:24,297 INFO L175 Difference]: Start difference. First operand has 188 places, 186 transitions, 2125 flow. Second operand 11 states and 337 transitions. [2024-02-02 16:09:24,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 240 transitions, 2833 flow [2024-02-02 16:09:24,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 240 transitions, 2799 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 16:09:24,360 INFO L231 Difference]: Finished difference. Result has 198 places, 192 transitions, 2273 flow [2024-02-02 16:09:24,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2093, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2273, PETRI_PLACES=198, PETRI_TRANSITIONS=192} [2024-02-02 16:09:24,361 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 121 predicate places. [2024-02-02 16:09:24,361 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 192 transitions, 2273 flow [2024-02-02 16:09:24,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:24,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:24,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:24,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-02-02 16:09:24,362 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:24,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:24,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1831307666, now seen corresponding path program 5 times [2024-02-02 16:09:24,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:24,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89921295] [2024-02-02 16:09:24,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:24,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:24,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:24,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:24,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89921295] [2024-02-02 16:09:24,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89921295] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:24,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:24,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:09:24,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537264208] [2024-02-02 16:09:24,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:24,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:09:24,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:24,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:09:24,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:09:24,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:24,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 192 transitions, 2273 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:24,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:24,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:24,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:25,360 INFO L124 PetriNetUnfolderBase]: 2132/3998 cut-off events. [2024-02-02 16:09:25,361 INFO L125 PetriNetUnfolderBase]: For 26044/26282 co-relation queries the response was YES. [2024-02-02 16:09:25,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17428 conditions, 3998 events. 2132/3998 cut-off events. For 26044/26282 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 26517 event pairs, 683 based on Foata normal form. 123/3876 useless extension candidates. Maximal degree in co-relation 17344. Up to 2441 conditions per place. [2024-02-02 16:09:25,400 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 152 selfloop transitions, 69 changer transitions 0/244 dead transitions. [2024-02-02 16:09:25,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 244 transitions, 2967 flow [2024-02-02 16:09:25,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-02 16:09:25,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-02 16:09:25,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 317 transitions. [2024-02-02 16:09:25,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43424657534246575 [2024-02-02 16:09:25,402 INFO L175 Difference]: Start difference. First operand has 198 places, 192 transitions, 2273 flow. Second operand 10 states and 317 transitions. [2024-02-02 16:09:25,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 244 transitions, 2967 flow [2024-02-02 16:09:25,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 244 transitions, 2877 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-02-02 16:09:25,477 INFO L231 Difference]: Finished difference. Result has 200 places, 194 transitions, 2342 flow [2024-02-02 16:09:25,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2183, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2342, PETRI_PLACES=200, PETRI_TRANSITIONS=194} [2024-02-02 16:09:25,478 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 123 predicate places. [2024-02-02 16:09:25,478 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 194 transitions, 2342 flow [2024-02-02 16:09:25,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:25,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:25,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:25,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-02-02 16:09:25,479 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:25,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:25,479 INFO L85 PathProgramCache]: Analyzing trace with hash 450213006, now seen corresponding path program 6 times [2024-02-02 16:09:25,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:25,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635651698] [2024-02-02 16:09:25,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:25,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:25,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:25,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:25,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:25,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635651698] [2024-02-02 16:09:25,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635651698] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:25,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:25,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:09:25,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160138190] [2024-02-02 16:09:25,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:25,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:09:25,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:25,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:09:25,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:09:25,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:25,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 194 transitions, 2342 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:25,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:25,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:25,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:26,532 INFO L124 PetriNetUnfolderBase]: 2100/3925 cut-off events. [2024-02-02 16:09:26,532 INFO L125 PetriNetUnfolderBase]: For 27380/27628 co-relation queries the response was YES. [2024-02-02 16:09:26,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17370 conditions, 3925 events. 2100/3925 cut-off events. For 27380/27628 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 25880 event pairs, 721 based on Foata normal form. 118/3796 useless extension candidates. Maximal degree in co-relation 17285. Up to 2957 conditions per place. [2024-02-02 16:09:26,578 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 171 selfloop transitions, 43 changer transitions 0/237 dead transitions. [2024-02-02 16:09:26,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 237 transitions, 2934 flow [2024-02-02 16:09:26,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-02 16:09:26,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-02 16:09:26,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 310 transitions. [2024-02-02 16:09:26,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4246575342465753 [2024-02-02 16:09:26,580 INFO L175 Difference]: Start difference. First operand has 200 places, 194 transitions, 2342 flow. Second operand 10 states and 310 transitions. [2024-02-02 16:09:26,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 237 transitions, 2934 flow [2024-02-02 16:09:26,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 237 transitions, 2793 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-02-02 16:09:26,665 INFO L231 Difference]: Finished difference. Result has 202 places, 194 transitions, 2297 flow [2024-02-02 16:09:26,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2201, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2297, PETRI_PLACES=202, PETRI_TRANSITIONS=194} [2024-02-02 16:09:26,666 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 125 predicate places. [2024-02-02 16:09:26,666 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 194 transitions, 2297 flow [2024-02-02 16:09:26,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:26,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:26,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:26,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-02-02 16:09:26,667 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:26,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:26,667 INFO L85 PathProgramCache]: Analyzing trace with hash 995958211, now seen corresponding path program 1 times [2024-02-02 16:09:26,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:26,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858781227] [2024-02-02 16:09:26,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:26,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:26,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:26,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:26,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:26,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858781227] [2024-02-02 16:09:26,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858781227] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:26,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:26,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 16:09:26,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211936952] [2024-02-02 16:09:26,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:26,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 16:09:26,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:26,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 16:09:26,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 16:09:26,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:26,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 194 transitions, 2297 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:26,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:26,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:26,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:27,480 INFO L124 PetriNetUnfolderBase]: 2077/3928 cut-off events. [2024-02-02 16:09:27,480 INFO L125 PetriNetUnfolderBase]: For 26450/26669 co-relation queries the response was YES. [2024-02-02 16:09:27,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17131 conditions, 3928 events. 2077/3928 cut-off events. For 26450/26669 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 26245 event pairs, 803 based on Foata normal form. 87/3763 useless extension candidates. Maximal degree in co-relation 17045. Up to 3112 conditions per place. [2024-02-02 16:09:27,520 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 169 selfloop transitions, 38 changer transitions 0/230 dead transitions. [2024-02-02 16:09:27,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 230 transitions, 2910 flow [2024-02-02 16:09:27,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 16:09:27,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 16:09:27,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 251 transitions. [2024-02-02 16:09:27,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4297945205479452 [2024-02-02 16:09:27,528 INFO L175 Difference]: Start difference. First operand has 202 places, 194 transitions, 2297 flow. Second operand 8 states and 251 transitions. [2024-02-02 16:09:27,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 230 transitions, 2910 flow [2024-02-02 16:09:27,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 230 transitions, 2820 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-02-02 16:09:27,609 INFO L231 Difference]: Finished difference. Result has 202 places, 207 transitions, 2422 flow [2024-02-02 16:09:27,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2211, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2422, PETRI_PLACES=202, PETRI_TRANSITIONS=207} [2024-02-02 16:09:27,613 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 125 predicate places. [2024-02-02 16:09:27,613 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 207 transitions, 2422 flow [2024-02-02 16:09:27,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:27,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:27,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:27,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-02-02 16:09:27,614 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:27,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:27,614 INFO L85 PathProgramCache]: Analyzing trace with hash 968285070, now seen corresponding path program 4 times [2024-02-02 16:09:27,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:27,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355361367] [2024-02-02 16:09:27,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:27,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:27,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:27,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:27,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:27,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355361367] [2024-02-02 16:09:27,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355361367] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:27,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:27,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:09:27,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451513886] [2024-02-02 16:09:27,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:27,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:09:27,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:27,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:09:27,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:09:27,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:27,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 207 transitions, 2422 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:27,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:27,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:27,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:28,554 INFO L124 PetriNetUnfolderBase]: 1798/3452 cut-off events. [2024-02-02 16:09:28,554 INFO L125 PetriNetUnfolderBase]: For 24206/24255 co-relation queries the response was YES. [2024-02-02 16:09:28,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15114 conditions, 3452 events. 1798/3452 cut-off events. For 24206/24255 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 23021 event pairs, 630 based on Foata normal form. 65/3337 useless extension candidates. Maximal degree in co-relation 15026. Up to 1651 conditions per place. [2024-02-02 16:09:28,590 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 130 selfloop transitions, 93 changer transitions 0/244 dead transitions. [2024-02-02 16:09:28,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 244 transitions, 3067 flow [2024-02-02 16:09:28,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-02 16:09:28,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-02 16:09:28,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 310 transitions. [2024-02-02 16:09:28,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4246575342465753 [2024-02-02 16:09:28,591 INFO L175 Difference]: Start difference. First operand has 202 places, 207 transitions, 2422 flow. Second operand 10 states and 310 transitions. [2024-02-02 16:09:28,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 244 transitions, 3067 flow [2024-02-02 16:09:28,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 244 transitions, 3026 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-02-02 16:09:28,657 INFO L231 Difference]: Finished difference. Result has 210 places, 207 transitions, 2578 flow [2024-02-02 16:09:28,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2381, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2578, PETRI_PLACES=210, PETRI_TRANSITIONS=207} [2024-02-02 16:09:28,658 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 133 predicate places. [2024-02-02 16:09:28,658 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 207 transitions, 2578 flow [2024-02-02 16:09:28,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:28,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:28,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:28,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-02-02 16:09:28,659 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:28,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:28,660 INFO L85 PathProgramCache]: Analyzing trace with hash -88034848, now seen corresponding path program 7 times [2024-02-02 16:09:28,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:28,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560910240] [2024-02-02 16:09:28,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:28,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:28,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:28,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:28,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:28,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560910240] [2024-02-02 16:09:28,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560910240] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:28,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:28,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:09:28,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232121165] [2024-02-02 16:09:28,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:28,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:09:28,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:28,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:09:28,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:09:28,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:28,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 207 transitions, 2578 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:28,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:28,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:28,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:29,644 INFO L124 PetriNetUnfolderBase]: 2017/3789 cut-off events. [2024-02-02 16:09:29,645 INFO L125 PetriNetUnfolderBase]: For 27909/28145 co-relation queries the response was YES. [2024-02-02 16:09:29,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17096 conditions, 3789 events. 2017/3789 cut-off events. For 27909/28145 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 24923 event pairs, 515 based on Foata normal form. 97/3652 useless extension candidates. Maximal degree in co-relation 17006. Up to 1859 conditions per place. [2024-02-02 16:09:29,683 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 132 selfloop transitions, 97 changer transitions 0/252 dead transitions. [2024-02-02 16:09:29,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 252 transitions, 3268 flow [2024-02-02 16:09:29,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-02 16:09:29,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-02 16:09:29,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 295 transitions. [2024-02-02 16:09:29,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4490106544901065 [2024-02-02 16:09:29,685 INFO L175 Difference]: Start difference. First operand has 210 places, 207 transitions, 2578 flow. Second operand 9 states and 295 transitions. [2024-02-02 16:09:29,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 252 transitions, 3268 flow [2024-02-02 16:09:29,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 252 transitions, 3078 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-02-02 16:09:29,766 INFO L231 Difference]: Finished difference. Result has 210 places, 209 transitions, 2612 flow [2024-02-02 16:09:29,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2392, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2612, PETRI_PLACES=210, PETRI_TRANSITIONS=209} [2024-02-02 16:09:29,767 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 133 predicate places. [2024-02-02 16:09:29,767 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 209 transitions, 2612 flow [2024-02-02 16:09:29,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:29,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:29,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:29,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-02-02 16:09:29,768 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:29,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:29,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1041594606, now seen corresponding path program 8 times [2024-02-02 16:09:29,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:29,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267926069] [2024-02-02 16:09:29,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:29,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:29,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:29,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:29,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:29,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267926069] [2024-02-02 16:09:29,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267926069] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:29,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:29,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:09:29,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107306199] [2024-02-02 16:09:29,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:29,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:09:29,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:29,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:09:29,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:09:30,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:30,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 209 transitions, 2612 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:30,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:30,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:30,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:30,725 INFO L124 PetriNetUnfolderBase]: 1997/3784 cut-off events. [2024-02-02 16:09:30,725 INFO L125 PetriNetUnfolderBase]: For 28525/28765 co-relation queries the response was YES. [2024-02-02 16:09:30,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17027 conditions, 3784 events. 1997/3784 cut-off events. For 28525/28765 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 24906 event pairs, 562 based on Foata normal form. 84/3639 useless extension candidates. Maximal degree in co-relation 16936. Up to 2172 conditions per place. [2024-02-02 16:09:30,764 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 141 selfloop transitions, 81 changer transitions 0/245 dead transitions. [2024-02-02 16:09:30,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 245 transitions, 3205 flow [2024-02-02 16:09:30,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-02 16:09:30,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-02 16:09:30,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 286 transitions. [2024-02-02 16:09:30,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4353120243531202 [2024-02-02 16:09:30,766 INFO L175 Difference]: Start difference. First operand has 210 places, 209 transitions, 2612 flow. Second operand 9 states and 286 transitions. [2024-02-02 16:09:30,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 245 transitions, 3205 flow [2024-02-02 16:09:30,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 245 transitions, 3045 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-02-02 16:09:30,932 INFO L231 Difference]: Finished difference. Result has 213 places, 209 transitions, 2630 flow [2024-02-02 16:09:30,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2452, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2630, PETRI_PLACES=213, PETRI_TRANSITIONS=209} [2024-02-02 16:09:30,932 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 136 predicate places. [2024-02-02 16:09:30,933 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 209 transitions, 2630 flow [2024-02-02 16:09:30,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:30,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:30,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:30,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-02-02 16:09:30,933 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:30,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:30,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1887906272, now seen corresponding path program 9 times [2024-02-02 16:09:30,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:30,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310965524] [2024-02-02 16:09:30,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:30,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:30,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:31,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:31,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:31,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310965524] [2024-02-02 16:09:31,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310965524] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:31,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:31,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:09:31,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599030571] [2024-02-02 16:09:31,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:31,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:09:31,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:31,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:09:31,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:09:31,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:31,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 209 transitions, 2630 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:31,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:31,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:31,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:31,931 INFO L124 PetriNetUnfolderBase]: 1953/3710 cut-off events. [2024-02-02 16:09:31,931 INFO L125 PetriNetUnfolderBase]: For 30098/30334 co-relation queries the response was YES. [2024-02-02 16:09:31,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16485 conditions, 3710 events. 1953/3710 cut-off events. For 30098/30334 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 24374 event pairs, 556 based on Foata normal form. 96/3577 useless extension candidates. Maximal degree in co-relation 16393. Up to 2160 conditions per place. [2024-02-02 16:09:31,968 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 136 selfloop transitions, 81 changer transitions 0/240 dead transitions. [2024-02-02 16:09:31,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 240 transitions, 3157 flow [2024-02-02 16:09:31,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 16:09:31,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 16:09:31,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 259 transitions. [2024-02-02 16:09:31,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4434931506849315 [2024-02-02 16:09:31,969 INFO L175 Difference]: Start difference. First operand has 213 places, 209 transitions, 2630 flow. Second operand 8 states and 259 transitions. [2024-02-02 16:09:31,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 240 transitions, 3157 flow [2024-02-02 16:09:32,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 240 transitions, 2983 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-02-02 16:09:32,052 INFO L231 Difference]: Finished difference. Result has 213 places, 209 transitions, 2640 flow [2024-02-02 16:09:32,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2456, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2640, PETRI_PLACES=213, PETRI_TRANSITIONS=209} [2024-02-02 16:09:32,052 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 136 predicate places. [2024-02-02 16:09:32,052 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 209 transitions, 2640 flow [2024-02-02 16:09:32,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:32,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:32,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:32,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-02-02 16:09:32,053 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:32,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:32,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1861315819, now seen corresponding path program 2 times [2024-02-02 16:09:32,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:32,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227135137] [2024-02-02 16:09:32,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:32,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:32,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:32,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:32,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:32,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227135137] [2024-02-02 16:09:32,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227135137] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:32,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:32,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 16:09:32,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397585368] [2024-02-02 16:09:32,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:32,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 16:09:32,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:32,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 16:09:32,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 16:09:32,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:32,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 209 transitions, 2640 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:32,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:32,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:32,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:32,938 INFO L124 PetriNetUnfolderBase]: 1959/3720 cut-off events. [2024-02-02 16:09:32,939 INFO L125 PetriNetUnfolderBase]: For 28422/28653 co-relation queries the response was YES. [2024-02-02 16:09:32,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16570 conditions, 3720 events. 1959/3720 cut-off events. For 28422/28653 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 24577 event pairs, 747 based on Foata normal form. 83/3555 useless extension candidates. Maximal degree in co-relation 16477. Up to 2914 conditions per place. [2024-02-02 16:09:32,970 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 169 selfloop transitions, 42 changer transitions 0/234 dead transitions. [2024-02-02 16:09:32,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 234 transitions, 3165 flow [2024-02-02 16:09:32,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 16:09:32,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 16:09:32,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 226 transitions. [2024-02-02 16:09:32,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44227005870841485 [2024-02-02 16:09:32,972 INFO L175 Difference]: Start difference. First operand has 213 places, 209 transitions, 2640 flow. Second operand 7 states and 226 transitions. [2024-02-02 16:09:32,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 234 transitions, 3165 flow [2024-02-02 16:09:33,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 234 transitions, 2967 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-02-02 16:09:33,054 INFO L231 Difference]: Finished difference. Result has 210 places, 212 transitions, 2554 flow [2024-02-02 16:09:33,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2442, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2554, PETRI_PLACES=210, PETRI_TRANSITIONS=212} [2024-02-02 16:09:33,055 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 133 predicate places. [2024-02-02 16:09:33,055 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 212 transitions, 2554 flow [2024-02-02 16:09:33,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:33,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:33,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:33,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-02-02 16:09:33,056 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:33,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:33,056 INFO L85 PathProgramCache]: Analyzing trace with hash -274114362, now seen corresponding path program 10 times [2024-02-02 16:09:33,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:33,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045048562] [2024-02-02 16:09:33,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:33,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:33,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:33,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:33,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:33,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045048562] [2024-02-02 16:09:33,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045048562] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:33,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:33,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:09:33,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814226123] [2024-02-02 16:09:33,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:33,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:09:33,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:33,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:09:33,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:09:33,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:33,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 212 transitions, 2554 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:33,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:33,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:33,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:34,075 INFO L124 PetriNetUnfolderBase]: 2065/3835 cut-off events. [2024-02-02 16:09:34,075 INFO L125 PetriNetUnfolderBase]: For 25027/25274 co-relation queries the response was YES. [2024-02-02 16:09:34,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16716 conditions, 3835 events. 2065/3835 cut-off events. For 25027/25274 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 24950 event pairs, 501 based on Foata normal form. 115/3719 useless extension candidates. Maximal degree in co-relation 16624. Up to 1926 conditions per place. [2024-02-02 16:09:34,122 INFO L140 encePairwiseOnDemand]: 59/73 looper letters, 130 selfloop transitions, 107 changer transitions 0/260 dead transitions. [2024-02-02 16:09:34,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 260 transitions, 3236 flow [2024-02-02 16:09:34,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-02 16:09:34,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-02 16:09:34,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 316 transitions. [2024-02-02 16:09:34,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4328767123287671 [2024-02-02 16:09:34,124 INFO L175 Difference]: Start difference. First operand has 210 places, 212 transitions, 2554 flow. Second operand 10 states and 316 transitions. [2024-02-02 16:09:34,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 260 transitions, 3236 flow [2024-02-02 16:09:34,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 260 transitions, 3173 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-02-02 16:09:34,202 INFO L231 Difference]: Finished difference. Result has 217 places, 221 transitions, 2815 flow [2024-02-02 16:09:34,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2491, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2815, PETRI_PLACES=217, PETRI_TRANSITIONS=221} [2024-02-02 16:09:34,203 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 140 predicate places. [2024-02-02 16:09:34,203 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 221 transitions, 2815 flow [2024-02-02 16:09:34,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:34,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:34,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:34,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-02-02 16:09:34,204 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:34,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:34,204 INFO L85 PathProgramCache]: Analyzing trace with hash 670526463, now seen corresponding path program 3 times [2024-02-02 16:09:34,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:34,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654855773] [2024-02-02 16:09:34,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:34,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:34,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:34,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:34,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:34,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654855773] [2024-02-02 16:09:34,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654855773] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:34,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:34,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 16:09:34,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497531180] [2024-02-02 16:09:34,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:34,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 16:09:34,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:34,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 16:09:34,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 16:09:34,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:34,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 221 transitions, 2815 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:34,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:34,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:34,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:35,010 INFO L124 PetriNetUnfolderBase]: 2035/3813 cut-off events. [2024-02-02 16:09:35,011 INFO L125 PetriNetUnfolderBase]: For 28185/28428 co-relation queries the response was YES. [2024-02-02 16:09:35,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17647 conditions, 3813 events. 2035/3813 cut-off events. For 28185/28428 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 25142 event pairs, 711 based on Foata normal form. 80/3656 useless extension candidates. Maximal degree in co-relation 17554. Up to 3030 conditions per place. [2024-02-02 16:09:35,051 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 178 selfloop transitions, 42 changer transitions 0/243 dead transitions. [2024-02-02 16:09:35,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 243 transitions, 3346 flow [2024-02-02 16:09:35,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 16:09:35,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 16:09:35,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 223 transitions. [2024-02-02 16:09:35,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436399217221135 [2024-02-02 16:09:35,052 INFO L175 Difference]: Start difference. First operand has 217 places, 221 transitions, 2815 flow. Second operand 7 states and 223 transitions. [2024-02-02 16:09:35,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 243 transitions, 3346 flow [2024-02-02 16:09:35,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 243 transitions, 3160 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-02-02 16:09:35,200 INFO L231 Difference]: Finished difference. Result has 216 places, 223 transitions, 2733 flow [2024-02-02 16:09:35,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2629, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2733, PETRI_PLACES=216, PETRI_TRANSITIONS=223} [2024-02-02 16:09:35,201 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 139 predicate places. [2024-02-02 16:09:35,201 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 223 transitions, 2733 flow [2024-02-02 16:09:35,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:35,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:35,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:35,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-02-02 16:09:35,202 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:35,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:35,203 INFO L85 PathProgramCache]: Analyzing trace with hash 671600613, now seen corresponding path program 4 times [2024-02-02 16:09:35,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:35,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151752233] [2024-02-02 16:09:35,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:35,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:35,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:35,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:35,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:35,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151752233] [2024-02-02 16:09:35,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151752233] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:35,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:35,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 16:09:35,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109319612] [2024-02-02 16:09:35,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:35,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 16:09:35,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:35,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 16:09:35,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 16:09:35,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:35,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 223 transitions, 2733 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:35,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:35,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:35,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:36,063 INFO L124 PetriNetUnfolderBase]: 2029/3803 cut-off events. [2024-02-02 16:09:36,063 INFO L125 PetriNetUnfolderBase]: For 25376/25619 co-relation queries the response was YES. [2024-02-02 16:09:36,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17090 conditions, 3803 events. 2029/3803 cut-off events. For 25376/25619 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 25098 event pairs, 713 based on Foata normal form. 76/3642 useless extension candidates. Maximal degree in co-relation 16997. Up to 3030 conditions per place. [2024-02-02 16:09:36,103 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 174 selfloop transitions, 44 changer transitions 0/241 dead transitions. [2024-02-02 16:09:36,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 241 transitions, 3232 flow [2024-02-02 16:09:36,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 16:09:36,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 16:09:36,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 221 transitions. [2024-02-02 16:09:36,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4324853228962818 [2024-02-02 16:09:36,105 INFO L175 Difference]: Start difference. First operand has 216 places, 223 transitions, 2733 flow. Second operand 7 states and 221 transitions. [2024-02-02 16:09:36,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 241 transitions, 3232 flow [2024-02-02 16:09:36,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 241 transitions, 3173 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-02 16:09:36,191 INFO L231 Difference]: Finished difference. Result has 220 places, 223 transitions, 2767 flow [2024-02-02 16:09:36,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2674, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2767, PETRI_PLACES=220, PETRI_TRANSITIONS=223} [2024-02-02 16:09:36,192 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 143 predicate places. [2024-02-02 16:09:36,192 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 223 transitions, 2767 flow [2024-02-02 16:09:36,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:36,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:36,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:36,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-02-02 16:09:36,193 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:36,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:36,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1188406002, now seen corresponding path program 1 times [2024-02-02 16:09:36,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:36,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335412463] [2024-02-02 16:09:36,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:36,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:36,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:36,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:36,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:36,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335412463] [2024-02-02 16:09:36,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335412463] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:36,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:36,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:09:36,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191197991] [2024-02-02 16:09:36,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:36,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:09:36,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:36,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:09:36,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:09:36,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:36,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 223 transitions, 2767 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:36,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:36,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:36,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:37,140 INFO L124 PetriNetUnfolderBase]: 2020/3822 cut-off events. [2024-02-02 16:09:37,141 INFO L125 PetriNetUnfolderBase]: For 26949/27124 co-relation queries the response was YES. [2024-02-02 16:09:37,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17322 conditions, 3822 events. 2020/3822 cut-off events. For 26949/27124 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 25595 event pairs, 726 based on Foata normal form. 62/3652 useless extension candidates. Maximal degree in co-relation 17228. Up to 3072 conditions per place. [2024-02-02 16:09:37,185 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 184 selfloop transitions, 53 changer transitions 0/260 dead transitions. [2024-02-02 16:09:37,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 260 transitions, 3638 flow [2024-02-02 16:09:37,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 16:09:37,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 16:09:37,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 245 transitions. [2024-02-02 16:09:37,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4195205479452055 [2024-02-02 16:09:37,186 INFO L175 Difference]: Start difference. First operand has 220 places, 223 transitions, 2767 flow. Second operand 8 states and 245 transitions. [2024-02-02 16:09:37,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 260 transitions, 3638 flow [2024-02-02 16:09:37,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 260 transitions, 3550 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-02-02 16:09:37,275 INFO L231 Difference]: Finished difference. Result has 224 places, 245 transitions, 3193 flow [2024-02-02 16:09:37,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2679, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3193, PETRI_PLACES=224, PETRI_TRANSITIONS=245} [2024-02-02 16:09:37,276 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 147 predicate places. [2024-02-02 16:09:37,276 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 245 transitions, 3193 flow [2024-02-02 16:09:37,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:37,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:37,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:37,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-02-02 16:09:37,277 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:37,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:37,277 INFO L85 PathProgramCache]: Analyzing trace with hash 811993926, now seen corresponding path program 1 times [2024-02-02 16:09:37,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:37,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30743743] [2024-02-02 16:09:37,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:37,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:37,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:37,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:37,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:37,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30743743] [2024-02-02 16:09:37,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30743743] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:37,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:37,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:09:37,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928263508] [2024-02-02 16:09:37,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:37,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:09:37,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:37,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:09:37,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:09:37,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-02 16:09:37,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 245 transitions, 3193 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:37,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:37,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-02 16:09:37,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:38,091 INFO L124 PetriNetUnfolderBase]: 1564/3144 cut-off events. [2024-02-02 16:09:38,092 INFO L125 PetriNetUnfolderBase]: For 28133/28357 co-relation queries the response was YES. [2024-02-02 16:09:38,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15038 conditions, 3144 events. 1564/3144 cut-off events. For 28133/28357 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 21716 event pairs, 472 based on Foata normal form. 87/3019 useless extension candidates. Maximal degree in co-relation 14942. Up to 2305 conditions per place. [2024-02-02 16:09:38,133 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 195 selfloop transitions, 27 changer transitions 0/260 dead transitions. [2024-02-02 16:09:38,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 260 transitions, 3707 flow [2024-02-02 16:09:38,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 16:09:38,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 16:09:38,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 244 transitions. [2024-02-02 16:09:38,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5570776255707762 [2024-02-02 16:09:38,135 INFO L175 Difference]: Start difference. First operand has 224 places, 245 transitions, 3193 flow. Second operand 6 states and 244 transitions. [2024-02-02 16:09:38,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 260 transitions, 3707 flow [2024-02-02 16:09:38,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 260 transitions, 3638 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-02-02 16:09:38,211 INFO L231 Difference]: Finished difference. Result has 228 places, 247 transitions, 3223 flow [2024-02-02 16:09:38,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3124, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3223, PETRI_PLACES=228, PETRI_TRANSITIONS=247} [2024-02-02 16:09:38,213 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 151 predicate places. [2024-02-02 16:09:38,213 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 247 transitions, 3223 flow [2024-02-02 16:09:38,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:38,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:38,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:38,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-02-02 16:09:38,214 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:38,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:38,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1401428766, now seen corresponding path program 1 times [2024-02-02 16:09:38,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:38,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877293310] [2024-02-02 16:09:38,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:38,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:38,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:38,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:38,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:38,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877293310] [2024-02-02 16:09:38,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877293310] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:38,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:38,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:09:38,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034926072] [2024-02-02 16:09:38,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:38,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:09:38,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:38,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:09:38,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:09:38,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-02 16:09:38,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 247 transitions, 3223 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:38,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:38,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-02 16:09:38,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:38,950 INFO L124 PetriNetUnfolderBase]: 1556/3139 cut-off events. [2024-02-02 16:09:38,950 INFO L125 PetriNetUnfolderBase]: For 28352/28572 co-relation queries the response was YES. [2024-02-02 16:09:38,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15130 conditions, 3139 events. 1556/3139 cut-off events. For 28352/28572 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 21705 event pairs, 458 based on Foata normal form. 107/3080 useless extension candidates. Maximal degree in co-relation 15032. Up to 2291 conditions per place. [2024-02-02 16:09:38,985 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 186 selfloop transitions, 36 changer transitions 0/260 dead transitions. [2024-02-02 16:09:38,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 260 transitions, 3734 flow [2024-02-02 16:09:38,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 16:09:38,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 16:09:38,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 241 transitions. [2024-02-02 16:09:38,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5502283105022832 [2024-02-02 16:09:38,987 INFO L175 Difference]: Start difference. First operand has 228 places, 247 transitions, 3223 flow. Second operand 6 states and 241 transitions. [2024-02-02 16:09:38,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 260 transitions, 3734 flow [2024-02-02 16:09:39,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 260 transitions, 3654 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-02-02 16:09:39,053 INFO L231 Difference]: Finished difference. Result has 231 places, 249 transitions, 3264 flow [2024-02-02 16:09:39,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3143, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3264, PETRI_PLACES=231, PETRI_TRANSITIONS=249} [2024-02-02 16:09:39,054 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 154 predicate places. [2024-02-02 16:09:39,054 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 249 transitions, 3264 flow [2024-02-02 16:09:39,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:39,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:39,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:39,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-02-02 16:09:39,055 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:39,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:39,055 INFO L85 PathProgramCache]: Analyzing trace with hash 957442728, now seen corresponding path program 1 times [2024-02-02 16:09:39,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:39,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516761545] [2024-02-02 16:09:39,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:39,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:39,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:39,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:39,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:39,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516761545] [2024-02-02 16:09:39,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516761545] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:39,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:39,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 16:09:39,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562740117] [2024-02-02 16:09:39,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:39,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 16:09:39,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:39,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 16:09:39,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 16:09:39,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-02 16:09:39,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 249 transitions, 3264 flow. Second operand has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:39,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:39,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-02 16:09:39,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:39,851 INFO L124 PetriNetUnfolderBase]: 1585/3188 cut-off events. [2024-02-02 16:09:39,852 INFO L125 PetriNetUnfolderBase]: For 29439/29661 co-relation queries the response was YES. [2024-02-02 16:09:39,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15429 conditions, 3188 events. 1585/3188 cut-off events. For 29439/29661 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 22020 event pairs, 423 based on Foata normal form. 92/3107 useless extension candidates. Maximal degree in co-relation 15330. Up to 2023 conditions per place. [2024-02-02 16:09:39,881 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 177 selfloop transitions, 63 changer transitions 0/278 dead transitions. [2024-02-02 16:09:39,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 278 transitions, 3921 flow [2024-02-02 16:09:39,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 16:09:39,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 16:09:39,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 291 transitions. [2024-02-02 16:09:39,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5694716242661448 [2024-02-02 16:09:39,882 INFO L175 Difference]: Start difference. First operand has 231 places, 249 transitions, 3264 flow. Second operand 7 states and 291 transitions. [2024-02-02 16:09:39,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 278 transitions, 3921 flow [2024-02-02 16:09:39,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 278 transitions, 3818 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-02-02 16:09:39,952 INFO L231 Difference]: Finished difference. Result has 235 places, 255 transitions, 3356 flow [2024-02-02 16:09:39,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3161, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3356, PETRI_PLACES=235, PETRI_TRANSITIONS=255} [2024-02-02 16:09:39,953 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 158 predicate places. [2024-02-02 16:09:39,953 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 255 transitions, 3356 flow [2024-02-02 16:09:39,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:39,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:39,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:39,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-02-02 16:09:39,954 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:39,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:39,954 INFO L85 PathProgramCache]: Analyzing trace with hash -57589966, now seen corresponding path program 1 times [2024-02-02 16:09:39,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:39,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301146249] [2024-02-02 16:09:39,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:39,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:39,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:40,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:40,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:40,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301146249] [2024-02-02 16:09:40,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301146249] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:40,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:40,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:09:40,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077617295] [2024-02-02 16:09:40,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:40,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:09:40,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:40,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:09:40,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:09:40,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:40,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 255 transitions, 3356 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:40,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:40,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:40,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:40,858 INFO L124 PetriNetUnfolderBase]: 2027/3815 cut-off events. [2024-02-02 16:09:40,858 INFO L125 PetriNetUnfolderBase]: For 31335/31504 co-relation queries the response was YES. [2024-02-02 16:09:40,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18352 conditions, 3815 events. 2027/3815 cut-off events. For 31335/31504 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 25387 event pairs, 624 based on Foata normal form. 55/3707 useless extension candidates. Maximal degree in co-relation 18252. Up to 2995 conditions per place. [2024-02-02 16:09:40,898 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 231 selfloop transitions, 40 changer transitions 0/294 dead transitions. [2024-02-02 16:09:40,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 294 transitions, 4117 flow [2024-02-02 16:09:40,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 16:09:40,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 16:09:40,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 230 transitions. [2024-02-02 16:09:40,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4500978473581213 [2024-02-02 16:09:40,900 INFO L175 Difference]: Start difference. First operand has 235 places, 255 transitions, 3356 flow. Second operand 7 states and 230 transitions. [2024-02-02 16:09:40,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 294 transitions, 4117 flow [2024-02-02 16:09:40,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 294 transitions, 3994 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-02-02 16:09:41,003 INFO L231 Difference]: Finished difference. Result has 239 places, 268 transitions, 3467 flow [2024-02-02 16:09:41,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3243, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3467, PETRI_PLACES=239, PETRI_TRANSITIONS=268} [2024-02-02 16:09:41,004 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 162 predicate places. [2024-02-02 16:09:41,004 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 268 transitions, 3467 flow [2024-02-02 16:09:41,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:41,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:41,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:41,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-02-02 16:09:41,005 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:41,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:41,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1490118934, now seen corresponding path program 2 times [2024-02-02 16:09:41,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:41,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768338561] [2024-02-02 16:09:41,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:41,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:41,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:41,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:41,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:41,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768338561] [2024-02-02 16:09:41,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768338561] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:41,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:41,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 16:09:41,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224824164] [2024-02-02 16:09:41,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:41,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 16:09:41,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:41,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 16:09:41,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 16:09:41,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-02 16:09:41,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 268 transitions, 3467 flow. Second operand has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:41,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:41,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-02 16:09:41,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:41,793 INFO L124 PetriNetUnfolderBase]: 1626/3268 cut-off events. [2024-02-02 16:09:41,793 INFO L125 PetriNetUnfolderBase]: For 29716/29943 co-relation queries the response was YES. [2024-02-02 16:09:41,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15854 conditions, 3268 events. 1626/3268 cut-off events. For 29716/29943 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 22710 event pairs, 359 based on Foata normal form. 91/3179 useless extension candidates. Maximal degree in co-relation 15753. Up to 2007 conditions per place. [2024-02-02 16:09:41,830 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 181 selfloop transitions, 73 changer transitions 0/292 dead transitions. [2024-02-02 16:09:41,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 292 transitions, 4091 flow [2024-02-02 16:09:41,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 16:09:41,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 16:09:41,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 290 transitions. [2024-02-02 16:09:41,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5675146771037182 [2024-02-02 16:09:41,831 INFO L175 Difference]: Start difference. First operand has 239 places, 268 transitions, 3467 flow. Second operand 7 states and 290 transitions. [2024-02-02 16:09:41,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 292 transitions, 4091 flow [2024-02-02 16:09:41,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 292 transitions, 4039 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-02-02 16:09:41,920 INFO L231 Difference]: Finished difference. Result has 242 places, 269 transitions, 3573 flow [2024-02-02 16:09:41,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3415, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3573, PETRI_PLACES=242, PETRI_TRANSITIONS=269} [2024-02-02 16:09:41,921 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 165 predicate places. [2024-02-02 16:09:41,921 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 269 transitions, 3573 flow [2024-02-02 16:09:41,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:41,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:41,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:41,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-02-02 16:09:41,922 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:41,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:41,922 INFO L85 PathProgramCache]: Analyzing trace with hash -597929346, now seen corresponding path program 2 times [2024-02-02 16:09:41,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:41,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867196186] [2024-02-02 16:09:41,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:41,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:41,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:42,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:42,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:42,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867196186] [2024-02-02 16:09:42,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867196186] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:42,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:42,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:09:42,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936222861] [2024-02-02 16:09:42,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:42,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:09:42,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:42,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:09:42,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:09:42,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:42,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 269 transitions, 3573 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:42,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:42,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:42,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:42,834 INFO L124 PetriNetUnfolderBase]: 1998/3764 cut-off events. [2024-02-02 16:09:42,835 INFO L125 PetriNetUnfolderBase]: For 30685/30854 co-relation queries the response was YES. [2024-02-02 16:09:42,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18040 conditions, 3764 events. 1998/3764 cut-off events. For 30685/30854 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 24994 event pairs, 619 based on Foata normal form. 63/3664 useless extension candidates. Maximal degree in co-relation 17940. Up to 2980 conditions per place. [2024-02-02 16:09:42,875 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 226 selfloop transitions, 38 changer transitions 0/287 dead transitions. [2024-02-02 16:09:42,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 287 transitions, 4155 flow [2024-02-02 16:09:42,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 16:09:42,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 16:09:42,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 196 transitions. [2024-02-02 16:09:42,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4474885844748858 [2024-02-02 16:09:42,877 INFO L175 Difference]: Start difference. First operand has 242 places, 269 transitions, 3573 flow. Second operand 6 states and 196 transitions. [2024-02-02 16:09:42,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 287 transitions, 4155 flow [2024-02-02 16:09:42,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 287 transitions, 4041 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-02-02 16:09:42,979 INFO L231 Difference]: Finished difference. Result has 244 places, 269 transitions, 3544 flow [2024-02-02 16:09:42,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3459, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3544, PETRI_PLACES=244, PETRI_TRANSITIONS=269} [2024-02-02 16:09:42,980 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 167 predicate places. [2024-02-02 16:09:42,981 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 269 transitions, 3544 flow [2024-02-02 16:09:42,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:42,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:42,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:42,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-02-02 16:09:42,981 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:42,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:42,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1079634646, now seen corresponding path program 3 times [2024-02-02 16:09:42,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:42,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107801140] [2024-02-02 16:09:42,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:42,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:42,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:43,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:43,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:43,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107801140] [2024-02-02 16:09:43,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107801140] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:43,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:43,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:09:43,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237510695] [2024-02-02 16:09:43,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:43,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:09:43,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:43,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:09:43,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:09:43,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:43,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 269 transitions, 3544 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:43,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:43,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:43,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:43,996 INFO L124 PetriNetUnfolderBase]: 1988/3736 cut-off events. [2024-02-02 16:09:43,996 INFO L125 PetriNetUnfolderBase]: For 30386/30559 co-relation queries the response was YES. [2024-02-02 16:09:44,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17811 conditions, 3736 events. 1988/3736 cut-off events. For 30386/30559 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 24801 event pairs, 640 based on Foata normal form. 55/3626 useless extension candidates. Maximal degree in co-relation 17710. Up to 2980 conditions per place. [2024-02-02 16:09:44,040 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 227 selfloop transitions, 36 changer transitions 0/286 dead transitions. [2024-02-02 16:09:44,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 286 transitions, 4116 flow [2024-02-02 16:09:44,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 16:09:44,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 16:09:44,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 196 transitions. [2024-02-02 16:09:44,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4474885844748858 [2024-02-02 16:09:44,041 INFO L175 Difference]: Start difference. First operand has 244 places, 269 transitions, 3544 flow. Second operand 6 states and 196 transitions. [2024-02-02 16:09:44,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 286 transitions, 4116 flow [2024-02-02 16:09:44,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 286 transitions, 4013 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-02-02 16:09:44,148 INFO L231 Difference]: Finished difference. Result has 238 places, 268 transitions, 3497 flow [2024-02-02 16:09:44,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3425, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3497, PETRI_PLACES=238, PETRI_TRANSITIONS=268} [2024-02-02 16:09:44,157 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 161 predicate places. [2024-02-02 16:09:44,157 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 268 transitions, 3497 flow [2024-02-02 16:09:44,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:44,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:44,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:44,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-02-02 16:09:44,158 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:44,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:44,158 INFO L85 PathProgramCache]: Analyzing trace with hash 145915860, now seen corresponding path program 1 times [2024-02-02 16:09:44,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:44,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968438647] [2024-02-02 16:09:44,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:44,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:44,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:44,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:44,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:44,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968438647] [2024-02-02 16:09:44,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968438647] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:44,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:44,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 16:09:44,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291156571] [2024-02-02 16:09:44,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:44,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 16:09:44,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:44,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 16:09:44,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-02-02 16:09:44,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-02 16:09:44,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 268 transitions, 3497 flow. Second operand has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:44,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:44,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-02 16:09:44,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:44,940 INFO L124 PetriNetUnfolderBase]: 1616/3256 cut-off events. [2024-02-02 16:09:44,940 INFO L125 PetriNetUnfolderBase]: For 31337/31560 co-relation queries the response was YES. [2024-02-02 16:09:44,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15736 conditions, 3256 events. 1616/3256 cut-off events. For 31337/31560 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 22567 event pairs, 430 based on Foata normal form. 110/3196 useless extension candidates. Maximal degree in co-relation 15642. Up to 2347 conditions per place. [2024-02-02 16:09:44,977 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 185 selfloop transitions, 68 changer transitions 0/291 dead transitions. [2024-02-02 16:09:44,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 291 transitions, 4209 flow [2024-02-02 16:09:44,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 16:09:44,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 16:09:44,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 243 transitions. [2024-02-02 16:09:44,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5547945205479452 [2024-02-02 16:09:44,985 INFO L175 Difference]: Start difference. First operand has 238 places, 268 transitions, 3497 flow. Second operand 6 states and 243 transitions. [2024-02-02 16:09:44,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 291 transitions, 4209 flow [2024-02-02 16:09:45,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 291 transitions, 4111 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-02-02 16:09:45,063 INFO L231 Difference]: Finished difference. Result has 240 places, 283 transitions, 3796 flow [2024-02-02 16:09:45,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3399, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3796, PETRI_PLACES=240, PETRI_TRANSITIONS=283} [2024-02-02 16:09:45,064 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 163 predicate places. [2024-02-02 16:09:45,064 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 283 transitions, 3796 flow [2024-02-02 16:09:45,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:45,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:45,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:45,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-02-02 16:09:45,064 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:45,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:45,065 INFO L85 PathProgramCache]: Analyzing trace with hash 2098105228, now seen corresponding path program 1 times [2024-02-02 16:09:45,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:45,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898262855] [2024-02-02 16:09:45,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:45,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:45,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:45,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:45,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:45,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898262855] [2024-02-02 16:09:45,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898262855] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:45,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:45,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:09:45,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350254048] [2024-02-02 16:09:45,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:45,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:09:45,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:45,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:09:45,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:09:45,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:45,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 283 transitions, 3796 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:45,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:45,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:45,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:46,109 INFO L124 PetriNetUnfolderBase]: 2073/3909 cut-off events. [2024-02-02 16:09:46,109 INFO L125 PetriNetUnfolderBase]: For 32765/33023 co-relation queries the response was YES. [2024-02-02 16:09:46,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18760 conditions, 3909 events. 2073/3909 cut-off events. For 32765/33023 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 25923 event pairs, 636 based on Foata normal form. 67/3782 useless extension candidates. Maximal degree in co-relation 18664. Up to 3076 conditions per place. [2024-02-02 16:09:46,154 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 248 selfloop transitions, 56 changer transitions 0/327 dead transitions. [2024-02-02 16:09:46,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 327 transitions, 4691 flow [2024-02-02 16:09:46,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 16:09:46,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 16:09:46,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 258 transitions. [2024-02-02 16:09:46,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417808219178082 [2024-02-02 16:09:46,155 INFO L175 Difference]: Start difference. First operand has 240 places, 283 transitions, 3796 flow. Second operand 8 states and 258 transitions. [2024-02-02 16:09:46,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 327 transitions, 4691 flow [2024-02-02 16:09:46,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 327 transitions, 4621 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-02-02 16:09:46,264 INFO L231 Difference]: Finished difference. Result has 246 places, 299 transitions, 4080 flow [2024-02-02 16:09:46,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3728, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4080, PETRI_PLACES=246, PETRI_TRANSITIONS=299} [2024-02-02 16:09:46,265 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 169 predicate places. [2024-02-02 16:09:46,265 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 299 transitions, 4080 flow [2024-02-02 16:09:46,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:46,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:46,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:46,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-02-02 16:09:46,266 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:46,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:46,266 INFO L85 PathProgramCache]: Analyzing trace with hash 887775766, now seen corresponding path program 2 times [2024-02-02 16:09:46,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:46,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412705709] [2024-02-02 16:09:46,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:46,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:46,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:46,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:46,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:46,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412705709] [2024-02-02 16:09:46,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412705709] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:46,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:46,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 16:09:46,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298843674] [2024-02-02 16:09:46,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:46,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 16:09:46,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:46,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 16:09:46,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 16:09:46,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-02 16:09:46,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 299 transitions, 4080 flow. Second operand has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:46,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:46,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-02 16:09:46,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:47,146 INFO L124 PetriNetUnfolderBase]: 1669/3346 cut-off events. [2024-02-02 16:09:47,146 INFO L125 PetriNetUnfolderBase]: For 33347/33577 co-relation queries the response was YES. [2024-02-02 16:09:47,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16962 conditions, 3346 events. 1669/3346 cut-off events. For 33347/33577 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 23353 event pairs, 434 based on Foata normal form. 107/3270 useless extension candidates. Maximal degree in co-relation 16864. Up to 2092 conditions per place. [2024-02-02 16:09:47,176 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 222 selfloop transitions, 74 changer transitions 0/334 dead transitions. [2024-02-02 16:09:47,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 334 transitions, 4924 flow [2024-02-02 16:09:47,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 16:09:47,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 16:09:47,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 291 transitions. [2024-02-02 16:09:47,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5694716242661448 [2024-02-02 16:09:47,178 INFO L175 Difference]: Start difference. First operand has 246 places, 299 transitions, 4080 flow. Second operand 7 states and 291 transitions. [2024-02-02 16:09:47,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 334 transitions, 4924 flow [2024-02-02 16:09:47,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 334 transitions, 4870 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-02-02 16:09:47,259 INFO L231 Difference]: Finished difference. Result has 250 places, 309 transitions, 4306 flow [2024-02-02 16:09:47,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4026, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4306, PETRI_PLACES=250, PETRI_TRANSITIONS=309} [2024-02-02 16:09:47,260 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 173 predicate places. [2024-02-02 16:09:47,260 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 309 transitions, 4306 flow [2024-02-02 16:09:47,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:47,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:47,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:47,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-02-02 16:09:47,261 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:47,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:47,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1781901898, now seen corresponding path program 3 times [2024-02-02 16:09:47,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:47,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560909115] [2024-02-02 16:09:47,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:47,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:47,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:47,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:47,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560909115] [2024-02-02 16:09:47,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560909115] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:47,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:47,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 16:09:47,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826962236] [2024-02-02 16:09:47,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:47,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 16:09:47,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:47,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 16:09:47,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 16:09:47,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-02 16:09:47,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 309 transitions, 4306 flow. Second operand has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:47,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:47,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-02 16:09:47,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:48,060 INFO L124 PetriNetUnfolderBase]: 1665/3335 cut-off events. [2024-02-02 16:09:48,061 INFO L125 PetriNetUnfolderBase]: For 35075/35315 co-relation queries the response was YES. [2024-02-02 16:09:48,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17225 conditions, 3335 events. 1665/3335 cut-off events. For 35075/35315 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 23199 event pairs, 439 based on Foata normal form. 92/3240 useless extension candidates. Maximal degree in co-relation 17125. Up to 2092 conditions per place. [2024-02-02 16:09:48,095 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 211 selfloop transitions, 82 changer transitions 0/331 dead transitions. [2024-02-02 16:09:48,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 331 transitions, 5006 flow [2024-02-02 16:09:48,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 16:09:48,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 16:09:48,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 287 transitions. [2024-02-02 16:09:48,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5616438356164384 [2024-02-02 16:09:48,097 INFO L175 Difference]: Start difference. First operand has 250 places, 309 transitions, 4306 flow. Second operand 7 states and 287 transitions. [2024-02-02 16:09:48,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 331 transitions, 5006 flow [2024-02-02 16:09:48,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 331 transitions, 4868 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-02-02 16:09:48,190 INFO L231 Difference]: Finished difference. Result has 254 places, 310 transitions, 4351 flow [2024-02-02 16:09:48,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4174, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4351, PETRI_PLACES=254, PETRI_TRANSITIONS=310} [2024-02-02 16:09:48,191 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 177 predicate places. [2024-02-02 16:09:48,191 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 310 transitions, 4351 flow [2024-02-02 16:09:48,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:48,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:48,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:48,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-02-02 16:09:48,192 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:48,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:48,193 INFO L85 PathProgramCache]: Analyzing trace with hash -561229550, now seen corresponding path program 2 times [2024-02-02 16:09:48,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:48,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291046980] [2024-02-02 16:09:48,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:48,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:48,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:48,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:48,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:48,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291046980] [2024-02-02 16:09:48,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291046980] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:48,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:48,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:09:48,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403032219] [2024-02-02 16:09:48,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:48,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:09:48,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:48,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:09:48,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:09:48,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:48,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 310 transitions, 4351 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:48,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:48,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:48,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:49,256 INFO L124 PetriNetUnfolderBase]: 2085/3904 cut-off events. [2024-02-02 16:09:49,256 INFO L125 PetriNetUnfolderBase]: For 35390/35578 co-relation queries the response was YES. [2024-02-02 16:09:49,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19634 conditions, 3904 events. 2085/3904 cut-off events. For 35390/35578 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 25847 event pairs, 592 based on Foata normal form. 63/3782 useless extension candidates. Maximal degree in co-relation 19533. Up to 2677 conditions per place. [2024-02-02 16:09:49,303 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 248 selfloop transitions, 74 changer transitions 0/345 dead transitions. [2024-02-02 16:09:49,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 345 transitions, 5153 flow [2024-02-02 16:09:49,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 16:09:49,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 16:09:49,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 259 transitions. [2024-02-02 16:09:49,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4434931506849315 [2024-02-02 16:09:49,305 INFO L175 Difference]: Start difference. First operand has 254 places, 310 transitions, 4351 flow. Second operand 8 states and 259 transitions. [2024-02-02 16:09:49,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 345 transitions, 5153 flow [2024-02-02 16:09:49,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 345 transitions, 5067 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-02-02 16:09:49,446 INFO L231 Difference]: Finished difference. Result has 260 places, 315 transitions, 4468 flow [2024-02-02 16:09:49,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4265, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4468, PETRI_PLACES=260, PETRI_TRANSITIONS=315} [2024-02-02 16:09:49,447 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 183 predicate places. [2024-02-02 16:09:49,447 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 315 transitions, 4468 flow [2024-02-02 16:09:49,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:49,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:49,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:49,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-02-02 16:09:49,448 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:49,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:49,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1310259880, now seen corresponding path program 3 times [2024-02-02 16:09:49,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:49,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261397146] [2024-02-02 16:09:49,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:49,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:49,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:49,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:49,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:49,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261397146] [2024-02-02 16:09:49,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261397146] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:49,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:49,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:09:49,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917438133] [2024-02-02 16:09:49,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:49,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:09:49,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:49,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:09:49,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:09:49,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:49,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 315 transitions, 4468 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:49,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:49,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:49,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:50,487 INFO L124 PetriNetUnfolderBase]: 2103/3934 cut-off events. [2024-02-02 16:09:50,488 INFO L125 PetriNetUnfolderBase]: For 36509/36697 co-relation queries the response was YES. [2024-02-02 16:09:50,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20005 conditions, 3934 events. 2103/3934 cut-off events. For 36509/36697 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 26091 event pairs, 592 based on Foata normal form. 63/3812 useless extension candidates. Maximal degree in co-relation 19902. Up to 2685 conditions per place. [2024-02-02 16:09:50,527 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 246 selfloop transitions, 80 changer transitions 0/349 dead transitions. [2024-02-02 16:09:50,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 349 transitions, 5295 flow [2024-02-02 16:09:50,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 16:09:50,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 16:09:50,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 259 transitions. [2024-02-02 16:09:50,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4434931506849315 [2024-02-02 16:09:50,528 INFO L175 Difference]: Start difference. First operand has 260 places, 315 transitions, 4468 flow. Second operand 8 states and 259 transitions. [2024-02-02 16:09:50,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 349 transitions, 5295 flow [2024-02-02 16:09:50,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 349 transitions, 5180 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-02-02 16:09:50,641 INFO L231 Difference]: Finished difference. Result has 263 places, 319 transitions, 4552 flow [2024-02-02 16:09:50,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4359, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4552, PETRI_PLACES=263, PETRI_TRANSITIONS=319} [2024-02-02 16:09:50,642 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 186 predicate places. [2024-02-02 16:09:50,642 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 319 transitions, 4552 flow [2024-02-02 16:09:50,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:50,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:50,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:50,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-02-02 16:09:50,643 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:50,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:50,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1536373570, now seen corresponding path program 4 times [2024-02-02 16:09:50,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:50,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65119604] [2024-02-02 16:09:50,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:50,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:50,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:50,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:50,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:50,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65119604] [2024-02-02 16:09:50,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65119604] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:50,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:50,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:09:50,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569646681] [2024-02-02 16:09:50,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:50,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:09:50,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:50,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:09:50,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:09:50,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:50,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 319 transitions, 4552 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:50,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:50,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:50,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:51,656 INFO L124 PetriNetUnfolderBase]: 2103/3894 cut-off events. [2024-02-02 16:09:51,657 INFO L125 PetriNetUnfolderBase]: For 36891/37079 co-relation queries the response was YES. [2024-02-02 16:09:51,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20030 conditions, 3894 events. 2103/3894 cut-off events. For 36891/37079 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 25684 event pairs, 442 based on Foata normal form. 63/3789 useless extension candidates. Maximal degree in co-relation 19926. Up to 2689 conditions per place. [2024-02-02 16:09:51,697 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 242 selfloop transitions, 86 changer transitions 0/351 dead transitions. [2024-02-02 16:09:51,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 351 transitions, 5354 flow [2024-02-02 16:09:51,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 16:09:51,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 16:09:51,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 258 transitions. [2024-02-02 16:09:51,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417808219178082 [2024-02-02 16:09:51,698 INFO L175 Difference]: Start difference. First operand has 263 places, 319 transitions, 4552 flow. Second operand 8 states and 258 transitions. [2024-02-02 16:09:51,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 351 transitions, 5354 flow [2024-02-02 16:09:51,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 351 transitions, 5228 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-02-02 16:09:51,810 INFO L231 Difference]: Finished difference. Result has 268 places, 322 transitions, 4656 flow [2024-02-02 16:09:51,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4428, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4656, PETRI_PLACES=268, PETRI_TRANSITIONS=322} [2024-02-02 16:09:51,810 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 191 predicate places. [2024-02-02 16:09:51,810 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 322 transitions, 4656 flow [2024-02-02 16:09:51,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:51,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:51,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:51,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-02-02 16:09:51,811 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:51,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:51,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1119273534, now seen corresponding path program 1 times [2024-02-02 16:09:51,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:51,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109063007] [2024-02-02 16:09:51,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:51,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:51,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:52,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:52,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:52,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109063007] [2024-02-02 16:09:52,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109063007] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:52,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:52,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:09:52,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742656455] [2024-02-02 16:09:52,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:52,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:09:52,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:52,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:09:52,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:09:52,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:52,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 322 transitions, 4656 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:52,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:52,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:52,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:52,882 INFO L124 PetriNetUnfolderBase]: 2145/4024 cut-off events. [2024-02-02 16:09:52,882 INFO L125 PetriNetUnfolderBase]: For 39219/39519 co-relation queries the response was YES. [2024-02-02 16:09:52,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20387 conditions, 4024 events. 2145/4024 cut-off events. For 39219/39519 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 26610 event pairs, 624 based on Foata normal form. 69/3891 useless extension candidates. Maximal degree in co-relation 20281. Up to 3236 conditions per place. [2024-02-02 16:09:52,927 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 271 selfloop transitions, 56 changer transitions 0/353 dead transitions. [2024-02-02 16:09:52,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 353 transitions, 5435 flow [2024-02-02 16:09:52,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-02 16:09:52,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-02 16:09:52,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 302 transitions. [2024-02-02 16:09:52,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4136986301369863 [2024-02-02 16:09:52,928 INFO L175 Difference]: Start difference. First operand has 268 places, 322 transitions, 4656 flow. Second operand 10 states and 302 transitions. [2024-02-02 16:09:52,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 353 transitions, 5435 flow [2024-02-02 16:09:53,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 353 transitions, 5286 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-02-02 16:09:53,064 INFO L231 Difference]: Finished difference. Result has 272 places, 326 transitions, 4658 flow [2024-02-02 16:09:53,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4509, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4658, PETRI_PLACES=272, PETRI_TRANSITIONS=326} [2024-02-02 16:09:53,065 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 195 predicate places. [2024-02-02 16:09:53,065 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 326 transitions, 4658 flow [2024-02-02 16:09:53,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:53,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:53,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:53,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-02-02 16:09:53,066 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:53,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:53,066 INFO L85 PathProgramCache]: Analyzing trace with hash -677379702, now seen corresponding path program 2 times [2024-02-02 16:09:53,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:53,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985727927] [2024-02-02 16:09:53,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:53,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:53,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:53,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:53,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:53,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985727927] [2024-02-02 16:09:53,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985727927] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:53,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:53,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:09:53,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292356166] [2024-02-02 16:09:53,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:53,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:09:53,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:53,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:09:53,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:09:53,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:53,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 326 transitions, 4658 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:53,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:53,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:53,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:54,219 INFO L124 PetriNetUnfolderBase]: 2173/4060 cut-off events. [2024-02-02 16:09:54,220 INFO L125 PetriNetUnfolderBase]: For 38217/38528 co-relation queries the response was YES. [2024-02-02 16:09:54,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20466 conditions, 4060 events. 2173/4060 cut-off events. For 38217/38528 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 26755 event pairs, 625 based on Foata normal form. 77/3931 useless extension candidates. Maximal degree in co-relation 20360. Up to 3344 conditions per place. [2024-02-02 16:09:54,265 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 276 selfloop transitions, 48 changer transitions 0/350 dead transitions. [2024-02-02 16:09:54,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 350 transitions, 5408 flow [2024-02-02 16:09:54,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-02 16:09:54,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-02 16:09:54,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 273 transitions. [2024-02-02 16:09:54,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4155251141552511 [2024-02-02 16:09:54,266 INFO L175 Difference]: Start difference. First operand has 272 places, 326 transitions, 4658 flow. Second operand 9 states and 273 transitions. [2024-02-02 16:09:54,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 350 transitions, 5408 flow [2024-02-02 16:09:54,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 350 transitions, 5244 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-02-02 16:09:54,396 INFO L231 Difference]: Finished difference. Result has 276 places, 330 transitions, 4647 flow [2024-02-02 16:09:54,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4504, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4647, PETRI_PLACES=276, PETRI_TRANSITIONS=330} [2024-02-02 16:09:54,397 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 199 predicate places. [2024-02-02 16:09:54,397 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 330 transitions, 4647 flow [2024-02-02 16:09:54,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:54,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:54,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:54,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-02-02 16:09:54,398 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:54,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:54,398 INFO L85 PathProgramCache]: Analyzing trace with hash -693309946, now seen corresponding path program 3 times [2024-02-02 16:09:54,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:54,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612831610] [2024-02-02 16:09:54,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:54,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:54,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:54,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:54,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612831610] [2024-02-02 16:09:54,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612831610] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:54,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:54,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:09:54,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064373251] [2024-02-02 16:09:54,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:54,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:09:54,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:54,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:09:54,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:09:54,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:54,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 330 transitions, 4647 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:54,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:54,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:54,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:55,439 INFO L124 PetriNetUnfolderBase]: 2175/4075 cut-off events. [2024-02-02 16:09:55,439 INFO L125 PetriNetUnfolderBase]: For 38313/38609 co-relation queries the response was YES. [2024-02-02 16:09:55,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20285 conditions, 4075 events. 2175/4075 cut-off events. For 38313/38609 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 27056 event pairs, 595 based on Foata normal form. 77/3949 useless extension candidates. Maximal degree in co-relation 20179. Up to 2661 conditions per place. [2024-02-02 16:09:55,482 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 265 selfloop transitions, 83 changer transitions 0/374 dead transitions. [2024-02-02 16:09:55,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 374 transitions, 5554 flow [2024-02-02 16:09:55,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-02 16:09:55,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-02 16:09:55,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 290 transitions. [2024-02-02 16:09:55,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.441400304414003 [2024-02-02 16:09:55,484 INFO L175 Difference]: Start difference. First operand has 276 places, 330 transitions, 4647 flow. Second operand 9 states and 290 transitions. [2024-02-02 16:09:55,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 374 transitions, 5554 flow [2024-02-02 16:09:55,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 374 transitions, 5487 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-02 16:09:55,608 INFO L231 Difference]: Finished difference. Result has 281 places, 335 transitions, 4784 flow [2024-02-02 16:09:55,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4580, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4784, PETRI_PLACES=281, PETRI_TRANSITIONS=335} [2024-02-02 16:09:55,609 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 204 predicate places. [2024-02-02 16:09:55,609 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 335 transitions, 4784 flow [2024-02-02 16:09:55,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:55,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:55,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:55,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-02-02 16:09:55,610 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:55,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:55,610 INFO L85 PathProgramCache]: Analyzing trace with hash -225150454, now seen corresponding path program 4 times [2024-02-02 16:09:55,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:55,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523692084] [2024-02-02 16:09:55,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:55,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:55,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:55,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:55,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:55,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523692084] [2024-02-02 16:09:55,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523692084] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:55,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:55,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:09:55,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974821458] [2024-02-02 16:09:55,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:55,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:09:55,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:55,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:09:55,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:09:55,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:55,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 335 transitions, 4784 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:55,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:55,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:55,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:56,676 INFO L124 PetriNetUnfolderBase]: 2169/4068 cut-off events. [2024-02-02 16:09:56,676 INFO L125 PetriNetUnfolderBase]: For 40030/40329 co-relation queries the response was YES. [2024-02-02 16:09:56,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20482 conditions, 4068 events. 2169/4068 cut-off events. For 40030/40329 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 27002 event pairs, 600 based on Foata normal form. 65/3930 useless extension candidates. Maximal degree in co-relation 20375. Up to 2661 conditions per place. [2024-02-02 16:09:56,720 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 258 selfloop transitions, 87 changer transitions 0/371 dead transitions. [2024-02-02 16:09:56,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 371 transitions, 5634 flow [2024-02-02 16:09:56,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-02 16:09:56,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-02 16:09:56,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 287 transitions. [2024-02-02 16:09:56,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4368340943683409 [2024-02-02 16:09:56,721 INFO L175 Difference]: Start difference. First operand has 281 places, 335 transitions, 4784 flow. Second operand 9 states and 287 transitions. [2024-02-02 16:09:56,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 371 transitions, 5634 flow [2024-02-02 16:09:56,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 371 transitions, 5503 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-02-02 16:09:56,858 INFO L231 Difference]: Finished difference. Result has 284 places, 335 transitions, 4832 flow [2024-02-02 16:09:56,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4653, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4832, PETRI_PLACES=284, PETRI_TRANSITIONS=335} [2024-02-02 16:09:56,859 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 207 predicate places. [2024-02-02 16:09:56,859 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 335 transitions, 4832 flow [2024-02-02 16:09:56,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:56,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:56,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:56,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-02-02 16:09:56,859 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:56,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:56,860 INFO L85 PathProgramCache]: Analyzing trace with hash -2131769834, now seen corresponding path program 1 times [2024-02-02 16:09:56,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:56,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733903737] [2024-02-02 16:09:56,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:56,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:56,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:56,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:56,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:56,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733903737] [2024-02-02 16:09:56,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733903737] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:56,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:56,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 16:09:56,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998500505] [2024-02-02 16:09:56,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:56,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 16:09:56,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:56,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 16:09:56,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 16:09:56,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-02 16:09:56,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 335 transitions, 4832 flow. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:56,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:56,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-02 16:09:56,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:57,675 INFO L124 PetriNetUnfolderBase]: 1758/3481 cut-off events. [2024-02-02 16:09:57,675 INFO L125 PetriNetUnfolderBase]: For 45463/45712 co-relation queries the response was YES. [2024-02-02 16:09:57,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18341 conditions, 3481 events. 1758/3481 cut-off events. For 45463/45712 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 24586 event pairs, 303 based on Foata normal form. 131/3347 useless extension candidates. Maximal degree in co-relation 18234. Up to 1040 conditions per place. [2024-02-02 16:09:57,723 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 214 selfloop transitions, 107 changer transitions 0/362 dead transitions. [2024-02-02 16:09:57,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 362 transitions, 5708 flow [2024-02-02 16:09:57,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 16:09:57,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 16:09:57,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 186 transitions. [2024-02-02 16:09:57,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.636986301369863 [2024-02-02 16:09:57,725 INFO L175 Difference]: Start difference. First operand has 284 places, 335 transitions, 4832 flow. Second operand 4 states and 186 transitions. [2024-02-02 16:09:57,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 362 transitions, 5708 flow [2024-02-02 16:09:57,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 362 transitions, 5503 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-02-02 16:09:57,910 INFO L231 Difference]: Finished difference. Result has 281 places, 336 transitions, 4964 flow [2024-02-02 16:09:57,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4630, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4964, PETRI_PLACES=281, PETRI_TRANSITIONS=336} [2024-02-02 16:09:57,911 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 204 predicate places. [2024-02-02 16:09:57,911 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 336 transitions, 4964 flow [2024-02-02 16:09:57,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:57,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:57,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:57,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-02-02 16:09:57,912 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:57,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:57,913 INFO L85 PathProgramCache]: Analyzing trace with hash -2127782146, now seen corresponding path program 2 times [2024-02-02 16:09:57,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:57,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412705053] [2024-02-02 16:09:57,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:57,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:57,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:58,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:58,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:58,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412705053] [2024-02-02 16:09:58,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412705053] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:58,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:58,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-02 16:09:58,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505912876] [2024-02-02 16:09:58,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:58,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-02 16:09:58,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:58,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-02 16:09:58,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-02 16:09:58,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-02 16:09:58,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 336 transitions, 4964 flow. Second operand has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:58,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:58,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-02 16:09:58,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:58,489 INFO L124 PetriNetUnfolderBase]: 1246/2412 cut-off events. [2024-02-02 16:09:58,489 INFO L125 PetriNetUnfolderBase]: For 41286/41493 co-relation queries the response was YES. [2024-02-02 16:09:58,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14405 conditions, 2412 events. 1246/2412 cut-off events. For 41286/41493 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 16208 event pairs, 285 based on Foata normal form. 133/2394 useless extension candidates. Maximal degree in co-relation 14297. Up to 966 conditions per place. [2024-02-02 16:09:58,518 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 209 selfloop transitions, 86 changer transitions 1/337 dead transitions. [2024-02-02 16:09:58,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 337 transitions, 5556 flow [2024-02-02 16:09:58,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 16:09:58,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 16:09:58,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 208 transitions. [2024-02-02 16:09:58,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5698630136986301 [2024-02-02 16:09:58,519 INFO L175 Difference]: Start difference. First operand has 281 places, 336 transitions, 4964 flow. Second operand 5 states and 208 transitions. [2024-02-02 16:09:58,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 337 transitions, 5556 flow [2024-02-02 16:09:58,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 337 transitions, 5389 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-02-02 16:09:58,684 INFO L231 Difference]: Finished difference. Result has 279 places, 325 transitions, 4994 flow [2024-02-02 16:09:58,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4723, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4994, PETRI_PLACES=279, PETRI_TRANSITIONS=325} [2024-02-02 16:09:58,685 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 202 predicate places. [2024-02-02 16:09:58,685 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 325 transitions, 4994 flow [2024-02-02 16:09:58,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:58,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:58,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:58,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-02-02 16:09:58,686 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:58,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:58,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1584332732, now seen corresponding path program 2 times [2024-02-02 16:09:58,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:58,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246446539] [2024-02-02 16:09:58,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:58,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:58,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:09:58,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:09:58,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:09:58,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246446539] [2024-02-02 16:09:58,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246446539] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:09:58,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:09:58,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:09:58,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770037421] [2024-02-02 16:09:58,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:09:58,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:09:58,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:09:58,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:09:58,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:09:58,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:09:58,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 325 transitions, 4994 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:58,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:09:58,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:09:58,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:09:59,636 INFO L124 PetriNetUnfolderBase]: 1677/3050 cut-off events. [2024-02-02 16:09:59,637 INFO L125 PetriNetUnfolderBase]: For 41636/41915 co-relation queries the response was YES. [2024-02-02 16:09:59,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17509 conditions, 3050 events. 1677/3050 cut-off events. For 41636/41915 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 19550 event pairs, 328 based on Foata normal form. 81/3026 useless extension candidates. Maximal degree in co-relation 17402. Up to 2549 conditions per place. [2024-02-02 16:09:59,669 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 269 selfloop transitions, 45 changer transitions 0/340 dead transitions. [2024-02-02 16:09:59,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 340 transitions, 5672 flow [2024-02-02 16:09:59,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 16:09:59,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 16:09:59,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 190 transitions. [2024-02-02 16:09:59,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4337899543378995 [2024-02-02 16:09:59,671 INFO L175 Difference]: Start difference. First operand has 279 places, 325 transitions, 4994 flow. Second operand 6 states and 190 transitions. [2024-02-02 16:09:59,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 340 transitions, 5672 flow [2024-02-02 16:09:59,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 340 transitions, 5463 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-02-02 16:09:59,901 INFO L231 Difference]: Finished difference. Result has 279 places, 326 transitions, 4891 flow [2024-02-02 16:09:59,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4786, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4891, PETRI_PLACES=279, PETRI_TRANSITIONS=326} [2024-02-02 16:09:59,901 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 202 predicate places. [2024-02-02 16:09:59,901 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 326 transitions, 4891 flow [2024-02-02 16:09:59,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:09:59,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:09:59,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:09:59,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-02-02 16:09:59,902 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:09:59,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:09:59,902 INFO L85 PathProgramCache]: Analyzing trace with hash 2065502928, now seen corresponding path program 3 times [2024-02-02 16:09:59,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:09:59,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365991468] [2024-02-02 16:09:59,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:09:59,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:09:59,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:10:00,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:10:00,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:10:00,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365991468] [2024-02-02 16:10:00,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365991468] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:10:00,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:10:00,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:10:00,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002216598] [2024-02-02 16:10:00,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:10:00,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:10:00,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:10:00,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:10:00,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:10:00,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:10:00,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 326 transitions, 4891 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:00,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:10:00,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:10:00,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:10:00,851 INFO L124 PetriNetUnfolderBase]: 1677/3053 cut-off events. [2024-02-02 16:10:00,851 INFO L125 PetriNetUnfolderBase]: For 38956/39195 co-relation queries the response was YES. [2024-02-02 16:10:00,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17161 conditions, 3053 events. 1677/3053 cut-off events. For 38956/39195 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 19605 event pairs, 309 based on Foata normal form. 80/3031 useless extension candidates. Maximal degree in co-relation 17056. Up to 2551 conditions per place. [2024-02-02 16:10:00,876 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 269 selfloop transitions, 44 changer transitions 0/339 dead transitions. [2024-02-02 16:10:00,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 339 transitions, 5559 flow [2024-02-02 16:10:00,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 16:10:00,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 16:10:00,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2024-02-02 16:10:00,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4269406392694064 [2024-02-02 16:10:00,877 INFO L175 Difference]: Start difference. First operand has 279 places, 326 transitions, 4891 flow. Second operand 6 states and 187 transitions. [2024-02-02 16:10:00,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 339 transitions, 5559 flow [2024-02-02 16:10:01,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 339 transitions, 5494 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-02-02 16:10:01,051 INFO L231 Difference]: Finished difference. Result has 280 places, 327 transitions, 4929 flow [2024-02-02 16:10:01,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4827, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4929, PETRI_PLACES=280, PETRI_TRANSITIONS=327} [2024-02-02 16:10:01,052 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 203 predicate places. [2024-02-02 16:10:01,052 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 327 transitions, 4929 flow [2024-02-02 16:10:01,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:01,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:10:01,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:10:01,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-02-02 16:10:01,053 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:10:01,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:10:01,053 INFO L85 PathProgramCache]: Analyzing trace with hash 2065539198, now seen corresponding path program 4 times [2024-02-02 16:10:01,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:10:01,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290197727] [2024-02-02 16:10:01,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:10:01,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:10:01,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:10:01,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:10:01,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:10:01,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290197727] [2024-02-02 16:10:01,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290197727] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:10:01,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:10:01,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:10:01,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268760937] [2024-02-02 16:10:01,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:10:01,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:10:01,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:10:01,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:10:01,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:10:01,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:10:01,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 327 transitions, 4929 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:01,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:10:01,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:10:01,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:10:01,899 INFO L124 PetriNetUnfolderBase]: 1674/3044 cut-off events. [2024-02-02 16:10:01,900 INFO L125 PetriNetUnfolderBase]: For 39134/39373 co-relation queries the response was YES. [2024-02-02 16:10:01,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17108 conditions, 3044 events. 1674/3044 cut-off events. For 39134/39373 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 19474 event pairs, 309 based on Foata normal form. 76/3018 useless extension candidates. Maximal degree in co-relation 17004. Up to 2551 conditions per place. [2024-02-02 16:10:01,930 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 263 selfloop transitions, 48 changer transitions 0/337 dead transitions. [2024-02-02 16:10:01,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 337 transitions, 5565 flow [2024-02-02 16:10:01,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 16:10:01,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 16:10:01,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2024-02-02 16:10:01,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4223744292237443 [2024-02-02 16:10:01,931 INFO L175 Difference]: Start difference. First operand has 280 places, 327 transitions, 4929 flow. Second operand 6 states and 185 transitions. [2024-02-02 16:10:01,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 337 transitions, 5565 flow [2024-02-02 16:10:02,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 337 transitions, 5404 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-02-02 16:10:02,134 INFO L231 Difference]: Finished difference. Result has 274 places, 326 transitions, 4848 flow [2024-02-02 16:10:02,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4752, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4848, PETRI_PLACES=274, PETRI_TRANSITIONS=326} [2024-02-02 16:10:02,134 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 197 predicate places. [2024-02-02 16:10:02,134 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 326 transitions, 4848 flow [2024-02-02 16:10:02,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:02,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:10:02,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:10:02,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-02-02 16:10:02,135 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:10:02,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:10:02,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1824643736, now seen corresponding path program 5 times [2024-02-02 16:10:02,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:10:02,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814948979] [2024-02-02 16:10:02,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:10:02,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:10:02,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:10:02,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:10:02,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:10:02,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814948979] [2024-02-02 16:10:02,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814948979] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:10:02,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:10:02,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:10:02,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366337825] [2024-02-02 16:10:02,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:10:02,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:10:02,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:10:02,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:10:02,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:10:02,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:10:02,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 326 transitions, 4848 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:02,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:10:02,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:10:02,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:10:03,059 INFO L124 PetriNetUnfolderBase]: 1680/3045 cut-off events. [2024-02-02 16:10:03,060 INFO L125 PetriNetUnfolderBase]: For 38680/38967 co-relation queries the response was YES. [2024-02-02 16:10:03,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17081 conditions, 3045 events. 1680/3045 cut-off events. For 38680/38967 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 19467 event pairs, 347 based on Foata normal form. 65/3004 useless extension candidates. Maximal degree in co-relation 16983. Up to 2525 conditions per place. [2024-02-02 16:10:03,094 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 256 selfloop transitions, 63 changer transitions 0/345 dead transitions. [2024-02-02 16:10:03,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 345 transitions, 5545 flow [2024-02-02 16:10:03,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 16:10:03,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 16:10:03,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 245 transitions. [2024-02-02 16:10:03,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4195205479452055 [2024-02-02 16:10:03,095 INFO L175 Difference]: Start difference. First operand has 274 places, 326 transitions, 4848 flow. Second operand 8 states and 245 transitions. [2024-02-02 16:10:03,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 345 transitions, 5545 flow [2024-02-02 16:10:03,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 345 transitions, 5427 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-02-02 16:10:03,312 INFO L231 Difference]: Finished difference. Result has 276 places, 326 transitions, 4870 flow [2024-02-02 16:10:03,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4730, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4870, PETRI_PLACES=276, PETRI_TRANSITIONS=326} [2024-02-02 16:10:03,313 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 199 predicate places. [2024-02-02 16:10:03,313 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 326 transitions, 4870 flow [2024-02-02 16:10:03,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:03,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:10:03,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:10:03,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-02-02 16:10:03,314 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:10:03,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:10:03,314 INFO L85 PathProgramCache]: Analyzing trace with hash -2049550632, now seen corresponding path program 6 times [2024-02-02 16:10:03,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:10:03,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85324479] [2024-02-02 16:10:03,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:10:03,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:10:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:10:03,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:10:03,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:10:03,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85324479] [2024-02-02 16:10:03,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85324479] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:10:03,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:10:03,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:10:03,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530452111] [2024-02-02 16:10:03,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:10:03,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:10:03,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:10:03,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:10:03,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:10:03,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:10:03,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 326 transitions, 4870 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:03,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:10:03,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:10:03,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:10:04,236 INFO L124 PetriNetUnfolderBase]: 1698/3077 cut-off events. [2024-02-02 16:10:04,237 INFO L125 PetriNetUnfolderBase]: For 39350/39633 co-relation queries the response was YES. [2024-02-02 16:10:04,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17247 conditions, 3077 events. 1698/3077 cut-off events. For 39350/39633 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 19770 event pairs, 296 based on Foata normal form. 81/3049 useless extension candidates. Maximal degree in co-relation 17149. Up to 2083 conditions per place. [2024-02-02 16:10:04,269 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 243 selfloop transitions, 91 changer transitions 0/360 dead transitions. [2024-02-02 16:10:04,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 360 transitions, 5708 flow [2024-02-02 16:10:04,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 16:10:04,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 16:10:04,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 254 transitions. [2024-02-02 16:10:04,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4349315068493151 [2024-02-02 16:10:04,271 INFO L175 Difference]: Start difference. First operand has 276 places, 326 transitions, 4870 flow. Second operand 8 states and 254 transitions. [2024-02-02 16:10:04,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 360 transitions, 5708 flow [2024-02-02 16:10:04,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 360 transitions, 5535 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-02-02 16:10:04,450 INFO L231 Difference]: Finished difference. Result has 276 places, 331 transitions, 4934 flow [2024-02-02 16:10:04,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4705, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4934, PETRI_PLACES=276, PETRI_TRANSITIONS=331} [2024-02-02 16:10:04,450 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 199 predicate places. [2024-02-02 16:10:04,450 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 331 transitions, 4934 flow [2024-02-02 16:10:04,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:04,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:10:04,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:10:04,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-02-02 16:10:04,452 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:10:04,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:10:04,452 INFO L85 PathProgramCache]: Analyzing trace with hash 99392834, now seen corresponding path program 7 times [2024-02-02 16:10:04,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:10:04,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028118639] [2024-02-02 16:10:04,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:10:04,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:10:04,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:10:04,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:10:04,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:10:04,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028118639] [2024-02-02 16:10:04,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028118639] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:10:04,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:10:04,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:10:04,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063897842] [2024-02-02 16:10:04,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:10:04,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:10:04,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:10:04,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:10:04,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:10:04,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:10:04,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 331 transitions, 4934 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:04,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:10:04,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:10:04,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:10:05,310 INFO L124 PetriNetUnfolderBase]: 1746/3131 cut-off events. [2024-02-02 16:10:05,311 INFO L125 PetriNetUnfolderBase]: For 40440/40700 co-relation queries the response was YES. [2024-02-02 16:10:05,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17765 conditions, 3131 events. 1746/3131 cut-off events. For 40440/40700 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 19827 event pairs, 278 based on Foata normal form. 98/3113 useless extension candidates. Maximal degree in co-relation 17667. Up to 2131 conditions per place. [2024-02-02 16:10:05,348 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 233 selfloop transitions, 106 changer transitions 0/365 dead transitions. [2024-02-02 16:10:05,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 365 transitions, 5813 flow [2024-02-02 16:10:05,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 16:10:05,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 16:10:05,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 250 transitions. [2024-02-02 16:10:05,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4280821917808219 [2024-02-02 16:10:05,350 INFO L175 Difference]: Start difference. First operand has 276 places, 331 transitions, 4934 flow. Second operand 8 states and 250 transitions. [2024-02-02 16:10:05,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 365 transitions, 5813 flow [2024-02-02 16:10:05,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 365 transitions, 5645 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-02-02 16:10:05,579 INFO L231 Difference]: Finished difference. Result has 279 places, 342 transitions, 5137 flow [2024-02-02 16:10:05,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4792, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5137, PETRI_PLACES=279, PETRI_TRANSITIONS=342} [2024-02-02 16:10:05,579 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 202 predicate places. [2024-02-02 16:10:05,579 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 342 transitions, 5137 flow [2024-02-02 16:10:05,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:05,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:10:05,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:10:05,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-02-02 16:10:05,580 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:10:05,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:10:05,581 INFO L85 PathProgramCache]: Analyzing trace with hash -2018094312, now seen corresponding path program 8 times [2024-02-02 16:10:05,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:10:05,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256012871] [2024-02-02 16:10:05,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:10:05,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:10:05,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:10:05,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:10:05,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:10:05,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256012871] [2024-02-02 16:10:05,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256012871] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:10:05,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:10:05,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:10:05,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34413660] [2024-02-02 16:10:05,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:10:05,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:10:05,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:10:05,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:10:05,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:10:05,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:10:05,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 342 transitions, 5137 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:05,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:10:05,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:10:05,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:10:06,519 INFO L124 PetriNetUnfolderBase]: 1704/3087 cut-off events. [2024-02-02 16:10:06,521 INFO L125 PetriNetUnfolderBase]: For 40398/40683 co-relation queries the response was YES. [2024-02-02 16:10:06,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17636 conditions, 3087 events. 1704/3087 cut-off events. For 40398/40683 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 19782 event pairs, 302 based on Foata normal form. 61/3039 useless extension candidates. Maximal degree in co-relation 17538. Up to 2095 conditions per place. [2024-02-02 16:10:06,568 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 235 selfloop transitions, 106 changer transitions 0/367 dead transitions. [2024-02-02 16:10:06,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 367 transitions, 5925 flow [2024-02-02 16:10:06,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 16:10:06,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 16:10:06,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 251 transitions. [2024-02-02 16:10:06,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4297945205479452 [2024-02-02 16:10:06,570 INFO L175 Difference]: Start difference. First operand has 279 places, 342 transitions, 5137 flow. Second operand 8 states and 251 transitions. [2024-02-02 16:10:06,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 367 transitions, 5925 flow [2024-02-02 16:10:06,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 367 transitions, 5759 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-02-02 16:10:06,853 INFO L231 Difference]: Finished difference. Result has 281 places, 342 transitions, 5193 flow [2024-02-02 16:10:06,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4973, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5193, PETRI_PLACES=281, PETRI_TRANSITIONS=342} [2024-02-02 16:10:06,853 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 204 predicate places. [2024-02-02 16:10:06,854 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 342 transitions, 5193 flow [2024-02-02 16:10:06,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:06,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:10:06,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:10:06,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-02-02 16:10:06,855 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:10:06,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:10:06,855 INFO L85 PathProgramCache]: Analyzing trace with hash 130849154, now seen corresponding path program 9 times [2024-02-02 16:10:06,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:10:06,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490593705] [2024-02-02 16:10:06,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:10:06,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:10:06,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:10:07,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:10:07,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:10:07,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490593705] [2024-02-02 16:10:07,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490593705] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:10:07,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:10:07,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:10:07,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833453450] [2024-02-02 16:10:07,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:10:07,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:10:07,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:10:07,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:10:07,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:10:07,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:10:07,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 342 transitions, 5193 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:07,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:10:07,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:10:07,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:10:07,796 INFO L124 PetriNetUnfolderBase]: 1770/3171 cut-off events. [2024-02-02 16:10:07,796 INFO L125 PetriNetUnfolderBase]: For 42636/42900 co-relation queries the response was YES. [2024-02-02 16:10:07,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18212 conditions, 3171 events. 1770/3171 cut-off events. For 42636/42900 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 20128 event pairs, 278 based on Foata normal form. 98/3153 useless extension candidates. Maximal degree in co-relation 18114. Up to 2147 conditions per place. [2024-02-02 16:10:07,827 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 231 selfloop transitions, 116 changer transitions 0/373 dead transitions. [2024-02-02 16:10:07,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 373 transitions, 6078 flow [2024-02-02 16:10:07,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 16:10:07,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 16:10:07,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 250 transitions. [2024-02-02 16:10:07,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4280821917808219 [2024-02-02 16:10:07,828 INFO L175 Difference]: Start difference. First operand has 281 places, 342 transitions, 5193 flow. Second operand 8 states and 250 transitions. [2024-02-02 16:10:07,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 373 transitions, 6078 flow [2024-02-02 16:10:08,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 373 transitions, 5882 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-02-02 16:10:08,044 INFO L231 Difference]: Finished difference. Result has 283 places, 350 transitions, 5330 flow [2024-02-02 16:10:08,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5015, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5330, PETRI_PLACES=283, PETRI_TRANSITIONS=350} [2024-02-02 16:10:08,045 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 206 predicate places. [2024-02-02 16:10:08,046 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 350 transitions, 5330 flow [2024-02-02 16:10:08,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:08,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:10:08,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:10:08,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-02-02 16:10:08,046 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:10:08,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:10:08,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1163107304, now seen corresponding path program 10 times [2024-02-02 16:10:08,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:10:08,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150470026] [2024-02-02 16:10:08,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:10:08,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:10:08,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:10:08,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:10:08,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:10:08,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150470026] [2024-02-02 16:10:08,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150470026] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:10:08,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:10:08,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:10:08,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51173300] [2024-02-02 16:10:08,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:10:08,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:10:08,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:10:08,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:10:08,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:10:08,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:10:08,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 350 transitions, 5330 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:08,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:10:08,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:10:08,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:10:08,882 INFO L124 PetriNetUnfolderBase]: 1782/3191 cut-off events. [2024-02-02 16:10:08,882 INFO L125 PetriNetUnfolderBase]: For 43534/43798 co-relation queries the response was YES. [2024-02-02 16:10:08,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18342 conditions, 3191 events. 1782/3191 cut-off events. For 43534/43798 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 20253 event pairs, 296 based on Foata normal form. 72/3147 useless extension candidates. Maximal degree in co-relation 18244. Up to 2159 conditions per place. [2024-02-02 16:10:08,919 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 225 selfloop transitions, 126 changer transitions 0/377 dead transitions. [2024-02-02 16:10:08,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 377 transitions, 6174 flow [2024-02-02 16:10:08,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 16:10:08,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 16:10:08,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 247 transitions. [2024-02-02 16:10:08,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229452054794521 [2024-02-02 16:10:08,921 INFO L175 Difference]: Start difference. First operand has 283 places, 350 transitions, 5330 flow. Second operand 8 states and 247 transitions. [2024-02-02 16:10:08,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 377 transitions, 6174 flow [2024-02-02 16:10:09,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 377 transitions, 6004 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-02 16:10:09,155 INFO L231 Difference]: Finished difference. Result has 288 places, 357 transitions, 5542 flow [2024-02-02 16:10:09,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5166, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5542, PETRI_PLACES=288, PETRI_TRANSITIONS=357} [2024-02-02 16:10:09,155 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 211 predicate places. [2024-02-02 16:10:09,156 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 357 transitions, 5542 flow [2024-02-02 16:10:09,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:09,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:10:09,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:10:09,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-02-02 16:10:09,157 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:10:09,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:10:09,157 INFO L85 PathProgramCache]: Analyzing trace with hash 948710849, now seen corresponding path program 1 times [2024-02-02 16:10:09,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:10:09,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316443623] [2024-02-02 16:10:09,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:10:09,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:10:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:10:09,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:10:09,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:10:09,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316443623] [2024-02-02 16:10:09,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316443623] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:10:09,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:10:09,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 16:10:09,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991983393] [2024-02-02 16:10:09,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:10:09,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 16:10:09,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:10:09,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 16:10:09,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-02-02 16:10:09,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:10:09,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 357 transitions, 5542 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:09,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:10:09,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:10:09,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:10:10,046 INFO L124 PetriNetUnfolderBase]: 1728/3182 cut-off events. [2024-02-02 16:10:10,047 INFO L125 PetriNetUnfolderBase]: For 46673/46829 co-relation queries the response was YES. [2024-02-02 16:10:10,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18420 conditions, 3182 events. 1728/3182 cut-off events. For 46673/46829 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 20967 event pairs, 384 based on Foata normal form. 40/3109 useless extension candidates. Maximal degree in co-relation 18320. Up to 2562 conditions per place. [2024-02-02 16:10:10,085 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 281 selfloop transitions, 63 changer transitions 0/370 dead transitions. [2024-02-02 16:10:10,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 370 transitions, 6283 flow [2024-02-02 16:10:10,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 16:10:10,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 16:10:10,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 213 transitions. [2024-02-02 16:10:10,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41682974559686886 [2024-02-02 16:10:10,086 INFO L175 Difference]: Start difference. First operand has 288 places, 357 transitions, 5542 flow. Second operand 7 states and 213 transitions. [2024-02-02 16:10:10,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 370 transitions, 6283 flow [2024-02-02 16:10:10,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 370 transitions, 6138 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-02-02 16:10:10,330 INFO L231 Difference]: Finished difference. Result has 289 places, 358 transitions, 5553 flow [2024-02-02 16:10:10,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5397, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5553, PETRI_PLACES=289, PETRI_TRANSITIONS=358} [2024-02-02 16:10:10,331 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 212 predicate places. [2024-02-02 16:10:10,331 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 358 transitions, 5553 flow [2024-02-02 16:10:10,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:10,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:10:10,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:10:10,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-02-02 16:10:10,332 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:10:10,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:10:10,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1917274705, now seen corresponding path program 1 times [2024-02-02 16:10:10,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:10:10,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070970615] [2024-02-02 16:10:10,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:10:10,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:10:10,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:10:10,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:10:10,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:10:10,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070970615] [2024-02-02 16:10:10,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070970615] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:10:10,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:10:10,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 16:10:10,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618252779] [2024-02-02 16:10:10,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:10:10,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 16:10:10,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:10:10,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 16:10:10,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-02-02 16:10:10,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:10:10,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 358 transitions, 5553 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:10,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:10:10,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:10:10,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:10:11,487 INFO L124 PetriNetUnfolderBase]: 1981/3578 cut-off events. [2024-02-02 16:10:11,487 INFO L125 PetriNetUnfolderBase]: For 54918/55210 co-relation queries the response was YES. [2024-02-02 16:10:11,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20583 conditions, 3578 events. 1981/3578 cut-off events. For 54918/55210 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 23332 event pairs, 424 based on Foata normal form. 91/3566 useless extension candidates. Maximal degree in co-relation 20484. Up to 2459 conditions per place. [2024-02-02 16:10:11,524 INFO L140 encePairwiseOnDemand]: 61/73 looper letters, 321 selfloop transitions, 95 changer transitions 0/442 dead transitions. [2024-02-02 16:10:11,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 442 transitions, 7084 flow [2024-02-02 16:10:11,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-02 16:10:11,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-02 16:10:11,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 379 transitions. [2024-02-02 16:10:11,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.432648401826484 [2024-02-02 16:10:11,526 INFO L175 Difference]: Start difference. First operand has 289 places, 358 transitions, 5553 flow. Second operand 12 states and 379 transitions. [2024-02-02 16:10:11,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 442 transitions, 7084 flow [2024-02-02 16:10:11,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 442 transitions, 6967 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-02-02 16:10:11,776 INFO L231 Difference]: Finished difference. Result has 298 places, 378 transitions, 5917 flow [2024-02-02 16:10:11,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5439, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5917, PETRI_PLACES=298, PETRI_TRANSITIONS=378} [2024-02-02 16:10:11,776 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 221 predicate places. [2024-02-02 16:10:11,777 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 378 transitions, 5917 flow [2024-02-02 16:10:11,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:11,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:10:11,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:10:11,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-02-02 16:10:11,777 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:10:11,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:10:11,778 INFO L85 PathProgramCache]: Analyzing trace with hash -2110024271, now seen corresponding path program 1 times [2024-02-02 16:10:11,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:10:11,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182567593] [2024-02-02 16:10:11,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:10:11,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:10:11,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:10:12,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:10:12,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:10:12,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182567593] [2024-02-02 16:10:12,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182567593] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:10:12,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:10:12,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 16:10:12,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551316391] [2024-02-02 16:10:12,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:10:12,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 16:10:12,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:10:12,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 16:10:12,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-02-02 16:10:12,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:10:12,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 378 transitions, 5917 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:12,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:10:12,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:10:12,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:10:13,024 INFO L124 PetriNetUnfolderBase]: 2154/3935 cut-off events. [2024-02-02 16:10:13,025 INFO L125 PetriNetUnfolderBase]: For 67878/68048 co-relation queries the response was YES. [2024-02-02 16:10:13,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23300 conditions, 3935 events. 2154/3935 cut-off events. For 67878/68048 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 26444 event pairs, 547 based on Foata normal form. 78/3913 useless extension candidates. Maximal degree in co-relation 23198. Up to 2530 conditions per place. [2024-02-02 16:10:13,076 INFO L140 encePairwiseOnDemand]: 61/73 looper letters, 331 selfloop transitions, 101 changer transitions 0/458 dead transitions. [2024-02-02 16:10:13,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 458 transitions, 7567 flow [2024-02-02 16:10:13,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-02 16:10:13,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-02 16:10:13,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 375 transitions. [2024-02-02 16:10:13,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4280821917808219 [2024-02-02 16:10:13,078 INFO L175 Difference]: Start difference. First operand has 298 places, 378 transitions, 5917 flow. Second operand 12 states and 375 transitions. [2024-02-02 16:10:13,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 458 transitions, 7567 flow [2024-02-02 16:10:13,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 458 transitions, 7461 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-02-02 16:10:13,363 INFO L231 Difference]: Finished difference. Result has 305 places, 394 transitions, 6291 flow [2024-02-02 16:10:13,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5811, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6291, PETRI_PLACES=305, PETRI_TRANSITIONS=394} [2024-02-02 16:10:13,363 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 228 predicate places. [2024-02-02 16:10:13,363 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 394 transitions, 6291 flow [2024-02-02 16:10:13,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:13,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:10:13,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:10:13,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-02-02 16:10:13,364 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:10:13,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:10:13,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1118963363, now seen corresponding path program 2 times [2024-02-02 16:10:13,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:10:13,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135945284] [2024-02-02 16:10:13,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:10:13,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:10:13,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:10:13,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:10:13,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:10:13,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135945284] [2024-02-02 16:10:13,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135945284] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:10:13,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:10:13,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 16:10:13,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180799644] [2024-02-02 16:10:13,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:10:13,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 16:10:13,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:10:13,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 16:10:13,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-02-02 16:10:13,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:10:13,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 394 transitions, 6291 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:13,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:10:13,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:10:13,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:10:14,366 INFO L124 PetriNetUnfolderBase]: 2188/3978 cut-off events. [2024-02-02 16:10:14,366 INFO L125 PetriNetUnfolderBase]: For 68565/68751 co-relation queries the response was YES. [2024-02-02 16:10:14,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24280 conditions, 3978 events. 2188/3978 cut-off events. For 68565/68751 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 26656 event pairs, 509 based on Foata normal form. 58/3914 useless extension candidates. Maximal degree in co-relation 24174. Up to 3028 conditions per place. [2024-02-02 16:10:14,410 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 313 selfloop transitions, 75 changer transitions 0/414 dead transitions. [2024-02-02 16:10:14,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 414 transitions, 7156 flow [2024-02-02 16:10:14,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 16:10:14,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 16:10:14,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 218 transitions. [2024-02-02 16:10:14,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42661448140900193 [2024-02-02 16:10:14,412 INFO L175 Difference]: Start difference. First operand has 305 places, 394 transitions, 6291 flow. Second operand 7 states and 218 transitions. [2024-02-02 16:10:14,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 414 transitions, 7156 flow [2024-02-02 16:10:14,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 414 transitions, 7027 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-02-02 16:10:14,710 INFO L231 Difference]: Finished difference. Result has 308 places, 397 transitions, 6380 flow [2024-02-02 16:10:14,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6162, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6380, PETRI_PLACES=308, PETRI_TRANSITIONS=397} [2024-02-02 16:10:14,710 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 231 predicate places. [2024-02-02 16:10:14,711 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 397 transitions, 6380 flow [2024-02-02 16:10:14,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:14,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:10:14,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:10:14,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-02-02 16:10:14,711 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:10:14,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:10:14,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1508271447, now seen corresponding path program 1 times [2024-02-02 16:10:14,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:10:14,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785990674] [2024-02-02 16:10:14,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:10:14,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:10:14,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:10:14,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:10:14,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:10:14,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785990674] [2024-02-02 16:10:14,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785990674] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:10:14,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:10:14,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:10:14,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656324346] [2024-02-02 16:10:14,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:10:14,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:10:14,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:10:14,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:10:14,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:10:14,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-02 16:10:14,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 397 transitions, 6380 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:14,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:10:14,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-02 16:10:14,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:10:15,701 INFO L124 PetriNetUnfolderBase]: 1721/3370 cut-off events. [2024-02-02 16:10:15,701 INFO L125 PetriNetUnfolderBase]: For 71129/71374 co-relation queries the response was YES. [2024-02-02 16:10:15,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21207 conditions, 3370 events. 1721/3370 cut-off events. For 71129/71374 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 24132 event pairs, 236 based on Foata normal form. 116/3378 useless extension candidates. Maximal degree in co-relation 21099. Up to 1115 conditions per place. [2024-02-02 16:10:15,744 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 262 selfloop transitions, 157 changer transitions 0/464 dead transitions. [2024-02-02 16:10:15,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 464 transitions, 7922 flow [2024-02-02 16:10:15,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-02 16:10:15,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-02 16:10:15,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 409 transitions. [2024-02-02 16:10:15,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5602739726027397 [2024-02-02 16:10:15,746 INFO L175 Difference]: Start difference. First operand has 308 places, 397 transitions, 6380 flow. Second operand 10 states and 409 transitions. [2024-02-02 16:10:15,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 464 transitions, 7922 flow [2024-02-02 16:10:16,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 464 transitions, 7837 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-02-02 16:10:16,020 INFO L231 Difference]: Finished difference. Result has 316 places, 404 transitions, 6722 flow [2024-02-02 16:10:16,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6295, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6722, PETRI_PLACES=316, PETRI_TRANSITIONS=404} [2024-02-02 16:10:16,021 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 239 predicate places. [2024-02-02 16:10:16,021 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 404 transitions, 6722 flow [2024-02-02 16:10:16,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:16,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:10:16,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:10:16,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-02-02 16:10:16,022 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:10:16,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:10:16,022 INFO L85 PathProgramCache]: Analyzing trace with hash -2146578243, now seen corresponding path program 2 times [2024-02-02 16:10:16,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:10:16,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660826075] [2024-02-02 16:10:16,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:10:16,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:10:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:10:16,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:10:16,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:10:16,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660826075] [2024-02-02 16:10:16,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660826075] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:10:16,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:10:16,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:10:16,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905115700] [2024-02-02 16:10:16,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:10:16,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:10:16,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:10:16,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:10:16,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:10:16,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-02 16:10:16,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 404 transitions, 6722 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:16,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:10:16,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-02 16:10:16,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:10:17,049 INFO L124 PetriNetUnfolderBase]: 1753/3427 cut-off events. [2024-02-02 16:10:17,049 INFO L125 PetriNetUnfolderBase]: For 75246/75477 co-relation queries the response was YES. [2024-02-02 16:10:17,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22135 conditions, 3427 events. 1753/3427 cut-off events. For 75246/75477 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 24486 event pairs, 233 based on Foata normal form. 103/3421 useless extension candidates. Maximal degree in co-relation 22026. Up to 1127 conditions per place. [2024-02-02 16:10:17,095 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 270 selfloop transitions, 160 changer transitions 0/475 dead transitions. [2024-02-02 16:10:17,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 475 transitions, 8306 flow [2024-02-02 16:10:17,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-02 16:10:17,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-02 16:10:17,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 483 transitions. [2024-02-02 16:10:17,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5513698630136986 [2024-02-02 16:10:17,097 INFO L175 Difference]: Start difference. First operand has 316 places, 404 transitions, 6722 flow. Second operand 12 states and 483 transitions. [2024-02-02 16:10:17,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 475 transitions, 8306 flow [2024-02-02 16:10:17,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 475 transitions, 8062 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-02-02 16:10:17,366 INFO L231 Difference]: Finished difference. Result has 324 places, 407 transitions, 6862 flow [2024-02-02 16:10:17,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6494, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6862, PETRI_PLACES=324, PETRI_TRANSITIONS=407} [2024-02-02 16:10:17,367 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 247 predicate places. [2024-02-02 16:10:17,367 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 407 transitions, 6862 flow [2024-02-02 16:10:17,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:17,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:10:17,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:10:17,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-02-02 16:10:17,368 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:10:17,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:10:17,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1698023937, now seen corresponding path program 3 times [2024-02-02 16:10:17,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:10:17,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820379730] [2024-02-02 16:10:17,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:10:17,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:10:17,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:10:17,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:10:17,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:10:17,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820379730] [2024-02-02 16:10:17,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820379730] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:10:17,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:10:17,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 16:10:17,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094536615] [2024-02-02 16:10:17,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:10:17,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 16:10:17,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:10:17,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 16:10:17,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-02-02 16:10:17,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:10:17,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 407 transitions, 6862 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:17,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:10:17,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:10:17,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:10:18,521 INFO L124 PetriNetUnfolderBase]: 2391/4333 cut-off events. [2024-02-02 16:10:18,522 INFO L125 PetriNetUnfolderBase]: For 84821/85014 co-relation queries the response was YES. [2024-02-02 16:10:18,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27873 conditions, 4333 events. 2391/4333 cut-off events. For 84821/85014 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 29401 event pairs, 552 based on Foata normal form. 58/4263 useless extension candidates. Maximal degree in co-relation 27761. Up to 3348 conditions per place. [2024-02-02 16:10:18,577 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 313 selfloop transitions, 105 changer transitions 0/444 dead transitions. [2024-02-02 16:10:18,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 444 transitions, 8179 flow [2024-02-02 16:10:18,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 16:10:18,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 16:10:18,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 246 transitions. [2024-02-02 16:10:18,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212328767123288 [2024-02-02 16:10:18,579 INFO L175 Difference]: Start difference. First operand has 324 places, 407 transitions, 6862 flow. Second operand 8 states and 246 transitions. [2024-02-02 16:10:18,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 444 transitions, 8179 flow [2024-02-02 16:10:18,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 444 transitions, 7854 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-02-02 16:10:18,931 INFO L231 Difference]: Finished difference. Result has 325 places, 425 transitions, 7210 flow [2024-02-02 16:10:18,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6559, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7210, PETRI_PLACES=325, PETRI_TRANSITIONS=425} [2024-02-02 16:10:18,932 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 248 predicate places. [2024-02-02 16:10:18,932 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 425 transitions, 7210 flow [2024-02-02 16:10:18,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:18,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:10:18,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:10:18,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-02-02 16:10:18,933 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:10:18,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:10:18,933 INFO L85 PathProgramCache]: Analyzing trace with hash 795892823, now seen corresponding path program 3 times [2024-02-02 16:10:18,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:10:18,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140528700] [2024-02-02 16:10:18,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:10:18,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:10:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:10:19,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:10:19,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:10:19,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140528700] [2024-02-02 16:10:19,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140528700] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:10:19,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:10:19,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:10:19,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584962004] [2024-02-02 16:10:19,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:10:19,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:10:19,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:10:19,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:10:19,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:10:19,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-02 16:10:19,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 425 transitions, 7210 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:19,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:10:19,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-02 16:10:19,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:10:19,901 INFO L124 PetriNetUnfolderBase]: 1823/3568 cut-off events. [2024-02-02 16:10:19,902 INFO L125 PetriNetUnfolderBase]: For 76735/76960 co-relation queries the response was YES. [2024-02-02 16:10:19,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23493 conditions, 3568 events. 1823/3568 cut-off events. For 76735/76960 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 25716 event pairs, 223 based on Foata normal form. 88/3537 useless extension candidates. Maximal degree in co-relation 23379. Up to 1155 conditions per place. [2024-02-02 16:10:19,948 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 233 selfloop transitions, 208 changer transitions 0/486 dead transitions. [2024-02-02 16:10:19,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 486 transitions, 8712 flow [2024-02-02 16:10:19,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-02 16:10:19,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-02 16:10:19,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 440 transitions. [2024-02-02 16:10:19,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.547945205479452 [2024-02-02 16:10:19,950 INFO L175 Difference]: Start difference. First operand has 325 places, 425 transitions, 7210 flow. Second operand 11 states and 440 transitions. [2024-02-02 16:10:19,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 486 transitions, 8712 flow [2024-02-02 16:10:20,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 486 transitions, 8588 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-02-02 16:10:20,254 INFO L231 Difference]: Finished difference. Result has 334 places, 440 transitions, 7822 flow [2024-02-02 16:10:20,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7086, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7822, PETRI_PLACES=334, PETRI_TRANSITIONS=440} [2024-02-02 16:10:20,255 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 257 predicate places. [2024-02-02 16:10:20,255 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 440 transitions, 7822 flow [2024-02-02 16:10:20,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:20,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:10:20,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:10:20,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-02-02 16:10:20,256 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:10:20,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:10:20,256 INFO L85 PathProgramCache]: Analyzing trace with hash 915529473, now seen corresponding path program 4 times [2024-02-02 16:10:20,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:10:20,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196725102] [2024-02-02 16:10:20,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:10:20,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:10:20,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:10:20,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:10:20,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:10:20,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196725102] [2024-02-02 16:10:20,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196725102] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:10:20,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:10:20,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 16:10:20,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22615017] [2024-02-02 16:10:20,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:10:20,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 16:10:20,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:10:20,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 16:10:20,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-02-02 16:10:20,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:10:20,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 440 transitions, 7822 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:20,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:10:20,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:10:20,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:10:21,437 INFO L124 PetriNetUnfolderBase]: 2417/4383 cut-off events. [2024-02-02 16:10:21,438 INFO L125 PetriNetUnfolderBase]: For 91743/91938 co-relation queries the response was YES. [2024-02-02 16:10:21,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29251 conditions, 4383 events. 2417/4383 cut-off events. For 91743/91938 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 29838 event pairs, 534 based on Foata normal form. 58/4313 useless extension candidates. Maximal degree in co-relation 29135. Up to 3394 conditions per place. [2024-02-02 16:10:21,492 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 329 selfloop transitions, 103 changer transitions 0/458 dead transitions. [2024-02-02 16:10:21,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 458 transitions, 8744 flow [2024-02-02 16:10:21,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 16:10:21,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 16:10:21,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 217 transitions. [2024-02-02 16:10:21,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4246575342465753 [2024-02-02 16:10:21,493 INFO L175 Difference]: Start difference. First operand has 334 places, 440 transitions, 7822 flow. Second operand 7 states and 217 transitions. [2024-02-02 16:10:21,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 458 transitions, 8744 flow [2024-02-02 16:10:21,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 458 transitions, 8341 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-02-02 16:10:21,893 INFO L231 Difference]: Finished difference. Result has 327 places, 441 transitions, 7673 flow [2024-02-02 16:10:21,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7404, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7673, PETRI_PLACES=327, PETRI_TRANSITIONS=441} [2024-02-02 16:10:21,894 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 250 predicate places. [2024-02-02 16:10:21,894 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 441 transitions, 7673 flow [2024-02-02 16:10:21,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:21,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:10:21,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:10:21,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-02-02 16:10:21,895 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:10:21,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:10:21,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1630382081, now seen corresponding path program 4 times [2024-02-02 16:10:21,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:10:21,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146909930] [2024-02-02 16:10:21,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:10:21,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:10:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:10:22,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:10:22,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:10:22,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146909930] [2024-02-02 16:10:22,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146909930] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:10:22,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:10:22,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:10:22,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102733907] [2024-02-02 16:10:22,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:10:22,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:10:22,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:10:22,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:10:22,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:10:22,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-02 16:10:22,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 441 transitions, 7673 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:22,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:10:22,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-02 16:10:22,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:10:22,894 INFO L124 PetriNetUnfolderBase]: 1856/3621 cut-off events. [2024-02-02 16:10:22,895 INFO L125 PetriNetUnfolderBase]: For 86278/86504 co-relation queries the response was YES. [2024-02-02 16:10:22,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24210 conditions, 3621 events. 1856/3621 cut-off events. For 86278/86504 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 26037 event pairs, 283 based on Foata normal form. 100/3600 useless extension candidates. Maximal degree in co-relation 24100. Up to 1582 conditions per place. [2024-02-02 16:10:22,939 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 264 selfloop transitions, 173 changer transitions 0/483 dead transitions. [2024-02-02 16:10:22,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 483 transitions, 8971 flow [2024-02-02 16:10:22,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 16:10:22,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 16:10:22,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 334 transitions. [2024-02-02 16:10:22,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.571917808219178 [2024-02-02 16:10:22,940 INFO L175 Difference]: Start difference. First operand has 327 places, 441 transitions, 7673 flow. Second operand 8 states and 334 transitions. [2024-02-02 16:10:22,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 483 transitions, 8971 flow [2024-02-02 16:10:23,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 483 transitions, 8772 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-02-02 16:10:23,296 INFO L231 Difference]: Finished difference. Result has 330 places, 444 transitions, 7870 flow [2024-02-02 16:10:23,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7474, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7870, PETRI_PLACES=330, PETRI_TRANSITIONS=444} [2024-02-02 16:10:23,297 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 253 predicate places. [2024-02-02 16:10:23,297 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 444 transitions, 7870 flow [2024-02-02 16:10:23,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:23,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:10:23,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:10:23,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-02-02 16:10:23,298 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:10:23,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:10:23,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1112964419, now seen corresponding path program 5 times [2024-02-02 16:10:23,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:10:23,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332776263] [2024-02-02 16:10:23,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:10:23,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:10:23,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:10:23,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:10:23,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:10:23,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332776263] [2024-02-02 16:10:23,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332776263] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:10:23,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:10:23,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:10:23,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010743697] [2024-02-02 16:10:23,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:10:23,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:10:23,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:10:23,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:10:23,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:10:23,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-02 16:10:23,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 444 transitions, 7870 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:23,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:10:23,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-02 16:10:23,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:10:24,430 INFO L124 PetriNetUnfolderBase]: 1826/3582 cut-off events. [2024-02-02 16:10:24,430 INFO L125 PetriNetUnfolderBase]: For 85998/86220 co-relation queries the response was YES. [2024-02-02 16:10:24,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23917 conditions, 3582 events. 1826/3582 cut-off events. For 85998/86220 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 25811 event pairs, 270 based on Foata normal form. 105/3569 useless extension candidates. Maximal degree in co-relation 23807. Up to 1583 conditions per place. [2024-02-02 16:10:24,482 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 285 selfloop transitions, 157 changer transitions 0/488 dead transitions. [2024-02-02 16:10:24,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 488 transitions, 9210 flow [2024-02-02 16:10:24,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-02 16:10:24,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-02 16:10:24,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 370 transitions. [2024-02-02 16:10:24,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.563165905631659 [2024-02-02 16:10:24,484 INFO L175 Difference]: Start difference. First operand has 330 places, 444 transitions, 7870 flow. Second operand 9 states and 370 transitions. [2024-02-02 16:10:24,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 488 transitions, 9210 flow [2024-02-02 16:10:24,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 488 transitions, 8950 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-02-02 16:10:24,857 INFO L231 Difference]: Finished difference. Result has 334 places, 444 transitions, 7948 flow [2024-02-02 16:10:24,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7614, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7948, PETRI_PLACES=334, PETRI_TRANSITIONS=444} [2024-02-02 16:10:24,858 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 257 predicate places. [2024-02-02 16:10:24,858 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 444 transitions, 7948 flow [2024-02-02 16:10:24,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:24,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:10:24,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:10:24,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-02-02 16:10:24,859 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:10:24,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:10:24,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1827222057, now seen corresponding path program 1 times [2024-02-02 16:10:24,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:10:24,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842742151] [2024-02-02 16:10:24,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:10:24,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:10:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:10:25,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:10:25,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:10:25,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842742151] [2024-02-02 16:10:25,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842742151] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:10:25,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:10:25,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 16:10:25,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099367524] [2024-02-02 16:10:25,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:10:25,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 16:10:25,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:10:25,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 16:10:25,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-02-02 16:10:25,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:10:25,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 444 transitions, 7948 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:25,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:10:25,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:10:25,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:10:26,184 INFO L124 PetriNetUnfolderBase]: 2383/4343 cut-off events. [2024-02-02 16:10:26,184 INFO L125 PetriNetUnfolderBase]: For 91198/91514 co-relation queries the response was YES. [2024-02-02 16:10:26,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28065 conditions, 4343 events. 2383/4343 cut-off events. For 91198/91514 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 29548 event pairs, 640 based on Foata normal form. 41/4267 useless extension candidates. Maximal degree in co-relation 27955. Up to 3643 conditions per place. [2024-02-02 16:10:26,237 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 376 selfloop transitions, 68 changer transitions 0/472 dead transitions. [2024-02-02 16:10:26,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 472 transitions, 8980 flow [2024-02-02 16:10:26,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-02 16:10:26,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-02 16:10:26,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 271 transitions. [2024-02-02 16:10:26,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4124809741248097 [2024-02-02 16:10:26,241 INFO L175 Difference]: Start difference. First operand has 334 places, 444 transitions, 7948 flow. Second operand 9 states and 271 transitions. [2024-02-02 16:10:26,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 472 transitions, 8980 flow [2024-02-02 16:10:26,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 472 transitions, 8694 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-02-02 16:10:26,636 INFO L231 Difference]: Finished difference. Result has 337 places, 446 transitions, 7832 flow [2024-02-02 16:10:26,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7662, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7832, PETRI_PLACES=337, PETRI_TRANSITIONS=446} [2024-02-02 16:10:26,637 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 260 predicate places. [2024-02-02 16:10:26,637 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 446 transitions, 7832 flow [2024-02-02 16:10:26,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:26,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:10:26,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:10:26,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-02-02 16:10:26,638 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:10:26,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:10:26,638 INFO L85 PathProgramCache]: Analyzing trace with hash -687856329, now seen corresponding path program 1 times [2024-02-02 16:10:26,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:10:26,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737719985] [2024-02-02 16:10:26,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:10:26,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:10:26,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:10:26,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:10:26,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:10:26,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737719985] [2024-02-02 16:10:26,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737719985] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:10:26,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:10:26,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:10:26,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448304415] [2024-02-02 16:10:26,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:10:26,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:10:26,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:10:26,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:10:26,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:10:26,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-02 16:10:26,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 446 transitions, 7832 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:26,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:10:26,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-02 16:10:26,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:10:27,647 INFO L124 PetriNetUnfolderBase]: 1826/3591 cut-off events. [2024-02-02 16:10:27,648 INFO L125 PetriNetUnfolderBase]: For 82503/82722 co-relation queries the response was YES. [2024-02-02 16:10:27,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23353 conditions, 3591 events. 1826/3591 cut-off events. For 82503/82722 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 25934 event pairs, 257 based on Foata normal form. 97/3570 useless extension candidates. Maximal degree in co-relation 23242. Up to 1612 conditions per place. [2024-02-02 16:10:27,689 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 260 selfloop transitions, 182 changer transitions 0/488 dead transitions. [2024-02-02 16:10:27,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 488 transitions, 9095 flow [2024-02-02 16:10:27,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-02 16:10:27,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-02 16:10:27,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 400 transitions. [2024-02-02 16:10:27,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.547945205479452 [2024-02-02 16:10:27,691 INFO L175 Difference]: Start difference. First operand has 337 places, 446 transitions, 7832 flow. Second operand 10 states and 400 transitions. [2024-02-02 16:10:27,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 488 transitions, 9095 flow [2024-02-02 16:10:28,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 488 transitions, 9013 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-02-02 16:10:28,011 INFO L231 Difference]: Finished difference. Result has 343 places, 449 transitions, 8227 flow [2024-02-02 16:10:28,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7750, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8227, PETRI_PLACES=343, PETRI_TRANSITIONS=449} [2024-02-02 16:10:28,012 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 266 predicate places. [2024-02-02 16:10:28,013 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 449 transitions, 8227 flow [2024-02-02 16:10:28,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:28,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:10:28,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:10:28,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-02-02 16:10:28,013 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:10:28,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:10:28,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1487245647, now seen corresponding path program 2 times [2024-02-02 16:10:28,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:10:28,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645853462] [2024-02-02 16:10:28,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:10:28,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:10:28,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:10:28,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:10:28,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:10:28,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645853462] [2024-02-02 16:10:28,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645853462] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:10:28,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:10:28,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 16:10:28,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251025815] [2024-02-02 16:10:28,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:10:28,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 16:10:28,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:10:28,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 16:10:28,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-02-02 16:10:28,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:10:28,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 449 transitions, 8227 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:28,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:10:28,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:10:28,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:10:29,282 INFO L124 PetriNetUnfolderBase]: 2398/4354 cut-off events. [2024-02-02 16:10:29,283 INFO L125 PetriNetUnfolderBase]: For 92007/92335 co-relation queries the response was YES. [2024-02-02 16:10:29,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28557 conditions, 4354 events. 2398/4354 cut-off events. For 92007/92335 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 29575 event pairs, 621 based on Foata normal form. 53/4284 useless extension candidates. Maximal degree in co-relation 28443. Up to 3808 conditions per place. [2024-02-02 16:10:29,332 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 389 selfloop transitions, 56 changer transitions 0/473 dead transitions. [2024-02-02 16:10:29,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 473 transitions, 9226 flow [2024-02-02 16:10:29,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-02 16:10:29,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-02 16:10:29,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 270 transitions. [2024-02-02 16:10:29,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.410958904109589 [2024-02-02 16:10:29,334 INFO L175 Difference]: Start difference. First operand has 343 places, 449 transitions, 8227 flow. Second operand 9 states and 270 transitions. [2024-02-02 16:10:29,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 473 transitions, 9226 flow [2024-02-02 16:10:29,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 473 transitions, 8978 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-02-02 16:10:29,708 INFO L231 Difference]: Finished difference. Result has 347 places, 450 transitions, 8112 flow [2024-02-02 16:10:29,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7979, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8112, PETRI_PLACES=347, PETRI_TRANSITIONS=450} [2024-02-02 16:10:29,709 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 270 predicate places. [2024-02-02 16:10:29,709 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 450 transitions, 8112 flow [2024-02-02 16:10:29,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:29,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:10:29,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:10:29,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-02-02 16:10:29,710 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:10:29,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:10:29,710 INFO L85 PathProgramCache]: Analyzing trace with hash -783691291, now seen corresponding path program 3 times [2024-02-02 16:10:29,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:10:29,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48505699] [2024-02-02 16:10:29,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:10:29,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:10:29,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:10:29,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:10:29,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:10:29,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48505699] [2024-02-02 16:10:29,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48505699] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:10:29,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:10:29,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 16:10:29,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562713090] [2024-02-02 16:10:29,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:10:29,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 16:10:29,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:10:29,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 16:10:29,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-02-02 16:10:29,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:10:29,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 450 transitions, 8112 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:29,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:10:29,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:10:29,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:10:30,901 INFO L124 PetriNetUnfolderBase]: 2388/4362 cut-off events. [2024-02-02 16:10:30,902 INFO L125 PetriNetUnfolderBase]: For 87531/87850 co-relation queries the response was YES. [2024-02-02 16:10:30,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27990 conditions, 4362 events. 2388/4362 cut-off events. For 87531/87850 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 29844 event pairs, 550 based on Foata normal form. 53/4294 useless extension candidates. Maximal degree in co-relation 27875. Up to 3212 conditions per place. [2024-02-02 16:10:30,964 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 357 selfloop transitions, 99 changer transitions 0/484 dead transitions. [2024-02-02 16:10:30,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 484 transitions, 9200 flow [2024-02-02 16:10:30,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-02 16:10:30,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-02 16:10:30,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 279 transitions. [2024-02-02 16:10:30,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4246575342465753 [2024-02-02 16:10:30,966 INFO L175 Difference]: Start difference. First operand has 347 places, 450 transitions, 8112 flow. Second operand 9 states and 279 transitions. [2024-02-02 16:10:30,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 484 transitions, 9200 flow [2024-02-02 16:10:31,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 484 transitions, 9110 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-02-02 16:10:31,354 INFO L231 Difference]: Finished difference. Result has 350 places, 452 transitions, 8253 flow [2024-02-02 16:10:31,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8022, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8253, PETRI_PLACES=350, PETRI_TRANSITIONS=452} [2024-02-02 16:10:31,355 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 273 predicate places. [2024-02-02 16:10:31,355 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 452 transitions, 8253 flow [2024-02-02 16:10:31,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:31,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:10:31,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:10:31,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-02-02 16:10:31,356 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:10:31,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:10:31,356 INFO L85 PathProgramCache]: Analyzing trace with hash -752234971, now seen corresponding path program 4 times [2024-02-02 16:10:31,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:10:31,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318035215] [2024-02-02 16:10:31,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:10:31,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:10:31,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:10:31,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:10:31,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:10:31,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318035215] [2024-02-02 16:10:31,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318035215] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:10:31,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:10:31,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 16:10:31,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939407612] [2024-02-02 16:10:31,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:10:31,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 16:10:31,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:10:31,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 16:10:31,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-02-02 16:10:31,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:10:31,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 452 transitions, 8253 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:31,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:10:31,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:10:31,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:10:32,615 INFO L124 PetriNetUnfolderBase]: 2386/4351 cut-off events. [2024-02-02 16:10:32,616 INFO L125 PetriNetUnfolderBase]: For 88533/88858 co-relation queries the response was YES. [2024-02-02 16:10:32,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28156 conditions, 4351 events. 2386/4351 cut-off events. For 88533/88858 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 29719 event pairs, 561 based on Foata normal form. 43/4271 useless extension candidates. Maximal degree in co-relation 28040. Up to 3212 conditions per place. [2024-02-02 16:10:32,670 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 346 selfloop transitions, 107 changer transitions 0/481 dead transitions. [2024-02-02 16:10:32,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 481 transitions, 9283 flow [2024-02-02 16:10:32,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-02 16:10:32,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-02 16:10:32,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 276 transitions. [2024-02-02 16:10:32,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4200913242009132 [2024-02-02 16:10:32,672 INFO L175 Difference]: Start difference. First operand has 350 places, 452 transitions, 8253 flow. Second operand 9 states and 276 transitions. [2024-02-02 16:10:32,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 481 transitions, 9283 flow [2024-02-02 16:10:33,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 481 transitions, 9135 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-02-02 16:10:33,079 INFO L231 Difference]: Finished difference. Result has 354 places, 452 transitions, 8325 flow [2024-02-02 16:10:33,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8105, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8325, PETRI_PLACES=354, PETRI_TRANSITIONS=452} [2024-02-02 16:10:33,080 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 277 predicate places. [2024-02-02 16:10:33,080 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 452 transitions, 8325 flow [2024-02-02 16:10:33,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:33,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:10:33,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:10:33,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-02-02 16:10:33,081 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:10:33,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:10:33,081 INFO L85 PathProgramCache]: Analyzing trace with hash -2145464523, now seen corresponding path program 6 times [2024-02-02 16:10:33,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:10:33,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808030981] [2024-02-02 16:10:33,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:10:33,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:10:33,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:10:33,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:10:33,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:10:33,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808030981] [2024-02-02 16:10:33,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808030981] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:10:33,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:10:33,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:10:33,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526120134] [2024-02-02 16:10:33,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:10:33,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:10:33,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:10:33,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:10:33,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:10:33,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-02 16:10:33,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 452 transitions, 8325 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:33,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:10:33,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-02 16:10:33,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:10:34,112 INFO L124 PetriNetUnfolderBase]: 1806/3553 cut-off events. [2024-02-02 16:10:34,112 INFO L125 PetriNetUnfolderBase]: For 86476/86697 co-relation queries the response was YES. [2024-02-02 16:10:34,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23674 conditions, 3553 events. 1806/3553 cut-off events. For 86476/86697 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 25749 event pairs, 249 based on Foata normal form. 104/3531 useless extension candidates. Maximal degree in co-relation 23557. Up to 1633 conditions per place. [2024-02-02 16:10:34,150 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 289 selfloop transitions, 159 changer transitions 0/494 dead transitions. [2024-02-02 16:10:34,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 494 transitions, 9580 flow [2024-02-02 16:10:34,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-02 16:10:34,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-02 16:10:34,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 368 transitions. [2024-02-02 16:10:34,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5601217656012176 [2024-02-02 16:10:34,151 INFO L175 Difference]: Start difference. First operand has 354 places, 452 transitions, 8325 flow. Second operand 9 states and 368 transitions. [2024-02-02 16:10:34,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 494 transitions, 9580 flow [2024-02-02 16:10:34,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 494 transitions, 9437 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-02-02 16:10:34,471 INFO L231 Difference]: Finished difference. Result has 357 places, 452 transitions, 8522 flow [2024-02-02 16:10:34,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8182, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8522, PETRI_PLACES=357, PETRI_TRANSITIONS=452} [2024-02-02 16:10:34,472 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 280 predicate places. [2024-02-02 16:10:34,472 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 452 transitions, 8522 flow [2024-02-02 16:10:34,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:34,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:10:34,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:10:34,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-02-02 16:10:34,472 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:10:34,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:10:34,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1868462785, now seen corresponding path program 7 times [2024-02-02 16:10:34,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:10:34,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601069055] [2024-02-02 16:10:34,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:10:34,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:10:34,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:10:34,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:10:34,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:10:34,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601069055] [2024-02-02 16:10:34,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601069055] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:10:34,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:10:34,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:10:34,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843875645] [2024-02-02 16:10:34,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:10:34,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:10:34,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:10:34,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:10:34,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:10:34,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-02 16:10:34,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 452 transitions, 8522 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:34,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:10:34,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-02 16:10:34,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:10:35,422 INFO L124 PetriNetUnfolderBase]: 1811/3575 cut-off events. [2024-02-02 16:10:35,423 INFO L125 PetriNetUnfolderBase]: For 88310/88528 co-relation queries the response was YES. [2024-02-02 16:10:35,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23981 conditions, 3575 events. 1811/3575 cut-off events. For 88310/88528 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 26030 event pairs, 222 based on Foata normal form. 101/3553 useless extension candidates. Maximal degree in co-relation 23863. Up to 1111 conditions per place. [2024-02-02 16:10:35,463 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 271 selfloop transitions, 190 changer transitions 0/507 dead transitions. [2024-02-02 16:10:35,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 507 transitions, 9929 flow [2024-02-02 16:10:35,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-02 16:10:35,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-02 16:10:35,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 406 transitions. [2024-02-02 16:10:35,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5561643835616439 [2024-02-02 16:10:35,464 INFO L175 Difference]: Start difference. First operand has 357 places, 452 transitions, 8522 flow. Second operand 10 states and 406 transitions. [2024-02-02 16:10:35,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 507 transitions, 9929 flow [2024-02-02 16:10:35,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 507 transitions, 9639 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-02-02 16:10:35,821 INFO L231 Difference]: Finished difference. Result has 361 places, 460 transitions, 8763 flow [2024-02-02 16:10:35,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8232, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8763, PETRI_PLACES=361, PETRI_TRANSITIONS=460} [2024-02-02 16:10:35,822 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 284 predicate places. [2024-02-02 16:10:35,822 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 460 transitions, 8763 flow [2024-02-02 16:10:35,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:35,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:10:35,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:10:35,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-02-02 16:10:35,823 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:10:35,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:10:35,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1249175017, now seen corresponding path program 2 times [2024-02-02 16:10:35,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:10:35,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623441872] [2024-02-02 16:10:35,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:10:35,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:10:35,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:10:35,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:10:35,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:10:35,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623441872] [2024-02-02 16:10:35,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623441872] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:10:35,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:10:35,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:10:36,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419510936] [2024-02-02 16:10:36,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:10:36,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:10:36,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:10:36,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:10:36,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:10:36,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-02 16:10:36,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 460 transitions, 8763 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:36,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:10:36,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-02 16:10:36,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:10:36,968 INFO L124 PetriNetUnfolderBase]: 1843/3639 cut-off events. [2024-02-02 16:10:36,969 INFO L125 PetriNetUnfolderBase]: For 87560/87778 co-relation queries the response was YES. [2024-02-02 16:10:36,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24643 conditions, 3639 events. 1843/3639 cut-off events. For 87560/87778 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 26534 event pairs, 222 based on Foata normal form. 89/3605 useless extension candidates. Maximal degree in co-relation 24523. Up to 1123 conditions per place. [2024-02-02 16:10:37,015 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 277 selfloop transitions, 195 changer transitions 0/518 dead transitions. [2024-02-02 16:10:37,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 518 transitions, 10198 flow [2024-02-02 16:10:37,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-02 16:10:37,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-02 16:10:37,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 480 transitions. [2024-02-02 16:10:37,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.547945205479452 [2024-02-02 16:10:37,016 INFO L175 Difference]: Start difference. First operand has 361 places, 460 transitions, 8763 flow. Second operand 12 states and 480 transitions. [2024-02-02 16:10:37,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 518 transitions, 10198 flow [2024-02-02 16:10:37,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 518 transitions, 9534 flow, removed 32 selfloop flow, removed 11 redundant places. [2024-02-02 16:10:37,404 INFO L231 Difference]: Finished difference. Result has 363 places, 463 transitions, 8569 flow [2024-02-02 16:10:37,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8123, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8569, PETRI_PLACES=363, PETRI_TRANSITIONS=463} [2024-02-02 16:10:37,405 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 286 predicate places. [2024-02-02 16:10:37,405 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 463 transitions, 8569 flow [2024-02-02 16:10:37,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:37,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:10:37,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:10:37,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-02-02 16:10:37,406 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:10:37,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:10:37,406 INFO L85 PathProgramCache]: Analyzing trace with hash -2070646359, now seen corresponding path program 3 times [2024-02-02 16:10:37,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:10:37,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965865470] [2024-02-02 16:10:37,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:10:37,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:10:37,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:10:37,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:10:37,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:10:37,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965865470] [2024-02-02 16:10:37,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965865470] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:10:37,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:10:37,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 16:10:37,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236904938] [2024-02-02 16:10:37,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:10:37,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-02 16:10:37,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:10:37,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-02 16:10:37,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-02-02 16:10:37,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-02 16:10:37,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 463 transitions, 8569 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:37,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:10:37,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-02 16:10:37,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:10:38,517 INFO L124 PetriNetUnfolderBase]: 1842/3633 cut-off events. [2024-02-02 16:10:38,517 INFO L125 PetriNetUnfolderBase]: For 83862/84079 co-relation queries the response was YES. [2024-02-02 16:10:38,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23178 conditions, 3633 events. 1842/3633 cut-off events. For 83862/84079 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 26420 event pairs, 208 based on Foata normal form. 68/3575 useless extension candidates. Maximal degree in co-relation 23060. Up to 1127 conditions per place. [2024-02-02 16:10:38,563 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 231 selfloop transitions, 228 changer transitions 0/505 dead transitions. [2024-02-02 16:10:38,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 505 transitions, 9744 flow [2024-02-02 16:10:38,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-02 16:10:38,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-02 16:10:38,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 434 transitions. [2024-02-02 16:10:38,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5404732254047323 [2024-02-02 16:10:38,564 INFO L175 Difference]: Start difference. First operand has 363 places, 463 transitions, 8569 flow. Second operand 11 states and 434 transitions. [2024-02-02 16:10:38,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 505 transitions, 9744 flow [2024-02-02 16:10:38,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 505 transitions, 9028 flow, removed 6 selfloop flow, removed 27 redundant places. [2024-02-02 16:10:38,897 INFO L231 Difference]: Finished difference. Result has 345 places, 463 transitions, 8265 flow [2024-02-02 16:10:38,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7801, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=227, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8265, PETRI_PLACES=345, PETRI_TRANSITIONS=463} [2024-02-02 16:10:38,898 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 268 predicate places. [2024-02-02 16:10:38,898 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 463 transitions, 8265 flow [2024-02-02 16:10:38,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:38,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:10:38,899 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] [2024-02-02 16:10:38,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-02-02 16:10:38,899 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:10:38,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:10:38,900 INFO L85 PathProgramCache]: Analyzing trace with hash -2086887115, now seen corresponding path program 2 times [2024-02-02 16:10:38,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:10:38,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071696511] [2024-02-02 16:10:38,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:10:38,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:10:38,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:10:39,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:10:39,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:10:39,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071696511] [2024-02-02 16:10:39,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071696511] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:10:39,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:10:39,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 16:10:39,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371493690] [2024-02-02 16:10:39,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:10:39,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 16:10:39,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:10:39,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 16:10:39,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-02-02 16:10:39,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:10:39,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 463 transitions, 8265 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:39,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:10:39,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:10:39,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:10:40,256 INFO L124 PetriNetUnfolderBase]: 2471/4534 cut-off events. [2024-02-02 16:10:40,256 INFO L125 PetriNetUnfolderBase]: For 84386/84558 co-relation queries the response was YES. [2024-02-02 16:10:40,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27329 conditions, 4534 events. 2471/4534 cut-off events. For 84386/84558 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 31334 event pairs, 230 based on Foata normal form. 56/4472 useless extension candidates. Maximal degree in co-relation 27230. Up to 1714 conditions per place. [2024-02-02 16:10:40,311 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 318 selfloop transitions, 202 changer transitions 0/546 dead transitions. [2024-02-02 16:10:40,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 546 transitions, 9976 flow [2024-02-02 16:10:40,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-02 16:10:40,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-02 16:10:40,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 387 transitions. [2024-02-02 16:10:40,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417808219178082 [2024-02-02 16:10:40,312 INFO L175 Difference]: Start difference. First operand has 345 places, 463 transitions, 8265 flow. Second operand 12 states and 387 transitions. [2024-02-02 16:10:40,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 546 transitions, 9976 flow [2024-02-02 16:10:40,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 546 transitions, 9454 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-02-02 16:10:40,684 INFO L231 Difference]: Finished difference. Result has 350 places, 479 transitions, 8366 flow [2024-02-02 16:10:40,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7757, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8366, PETRI_PLACES=350, PETRI_TRANSITIONS=479} [2024-02-02 16:10:40,685 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 273 predicate places. [2024-02-02 16:10:40,685 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 479 transitions, 8366 flow [2024-02-02 16:10:40,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:40,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:10:40,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:10:40,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-02-02 16:10:40,686 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:10:40,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:10:40,686 INFO L85 PathProgramCache]: Analyzing trace with hash -2002065793, now seen corresponding path program 3 times [2024-02-02 16:10:40,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:10:40,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48342879] [2024-02-02 16:10:40,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:10:40,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:10:40,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:10:40,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:10:40,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:10:40,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48342879] [2024-02-02 16:10:40,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48342879] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:10:40,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:10:40,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 16:10:40,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057436679] [2024-02-02 16:10:40,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:10:40,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 16:10:40,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:10:40,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 16:10:40,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-02-02 16:10:40,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:10:40,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 479 transitions, 8366 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:40,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:10:40,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:10:40,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:10:42,070 INFO L124 PetriNetUnfolderBase]: 2459/4514 cut-off events. [2024-02-02 16:10:42,070 INFO L125 PetriNetUnfolderBase]: For 85651/85853 co-relation queries the response was YES. [2024-02-02 16:10:42,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28104 conditions, 4514 events. 2459/4514 cut-off events. For 85651/85853 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 31143 event pairs, 230 based on Foata normal form. 62/4464 useless extension candidates. Maximal degree in co-relation 28003. Up to 1710 conditions per place. [2024-02-02 16:10:42,119 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 326 selfloop transitions, 202 changer transitions 0/554 dead transitions. [2024-02-02 16:10:42,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 554 transitions, 10014 flow [2024-02-02 16:10:42,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-02-02 16:10:42,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-02-02 16:10:42,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 442 transitions. [2024-02-02 16:10:42,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4324853228962818 [2024-02-02 16:10:42,120 INFO L175 Difference]: Start difference. First operand has 350 places, 479 transitions, 8366 flow. Second operand 14 states and 442 transitions. [2024-02-02 16:10:42,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 554 transitions, 10014 flow [2024-02-02 16:10:42,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 554 transitions, 9680 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-02-02 16:10:42,470 INFO L231 Difference]: Finished difference. Result has 355 places, 479 transitions, 8444 flow [2024-02-02 16:10:42,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8032, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=8444, PETRI_PLACES=355, PETRI_TRANSITIONS=479} [2024-02-02 16:10:42,471 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 278 predicate places. [2024-02-02 16:10:42,471 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 479 transitions, 8444 flow [2024-02-02 16:10:42,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:42,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:10:42,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:10:42,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-02-02 16:10:42,472 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:10:42,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:10:42,472 INFO L85 PathProgramCache]: Analyzing trace with hash 844460735, now seen corresponding path program 4 times [2024-02-02 16:10:42,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:10:42,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779726255] [2024-02-02 16:10:42,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:10:42,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:10:42,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:10:42,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:10:42,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:10:42,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779726255] [2024-02-02 16:10:42,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779726255] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:10:42,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:10:42,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 16:10:42,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787741927] [2024-02-02 16:10:42,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:10:42,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 16:10:42,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:10:42,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 16:10:42,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-02-02 16:10:42,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:10:42,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 479 transitions, 8444 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:42,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:10:42,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:10:42,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:10:43,854 INFO L124 PetriNetUnfolderBase]: 2615/4810 cut-off events. [2024-02-02 16:10:43,854 INFO L125 PetriNetUnfolderBase]: For 91896/92092 co-relation queries the response was YES. [2024-02-02 16:10:43,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29745 conditions, 4810 events. 2615/4810 cut-off events. For 91896/92092 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 33571 event pairs, 210 based on Foata normal form. 56/4748 useless extension candidates. Maximal degree in co-relation 29643. Up to 1766 conditions per place. [2024-02-02 16:10:43,908 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 294 selfloop transitions, 238 changer transitions 0/558 dead transitions. [2024-02-02 16:10:43,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 558 transitions, 10228 flow [2024-02-02 16:10:43,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-02 16:10:43,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-02 16:10:43,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 411 transitions. [2024-02-02 16:10:43,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43308746048472074 [2024-02-02 16:10:43,909 INFO L175 Difference]: Start difference. First operand has 355 places, 479 transitions, 8444 flow. Second operand 13 states and 411 transitions. [2024-02-02 16:10:43,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 558 transitions, 10228 flow [2024-02-02 16:10:44,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 558 transitions, 9870 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-02-02 16:10:44,283 INFO L231 Difference]: Finished difference. Result has 358 places, 493 transitions, 8855 flow [2024-02-02 16:10:44,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8104, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8855, PETRI_PLACES=358, PETRI_TRANSITIONS=493} [2024-02-02 16:10:44,284 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 281 predicate places. [2024-02-02 16:10:44,284 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 493 transitions, 8855 flow [2024-02-02 16:10:44,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:44,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:10:44,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:10:44,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-02-02 16:10:44,285 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:10:44,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:10:44,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1013762529, now seen corresponding path program 5 times [2024-02-02 16:10:44,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:10:44,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609306233] [2024-02-02 16:10:44,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:10:44,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:10:44,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:10:44,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:10:44,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:10:44,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609306233] [2024-02-02 16:10:44,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609306233] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:10:44,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:10:44,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 16:10:44,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526186946] [2024-02-02 16:10:44,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:10:44,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 16:10:44,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:10:44,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 16:10:44,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-02-02 16:10:44,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:10:44,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 493 transitions, 8855 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:44,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:10:44,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:10:44,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:10:45,693 INFO L124 PetriNetUnfolderBase]: 2711/4948 cut-off events. [2024-02-02 16:10:45,693 INFO L125 PetriNetUnfolderBase]: For 99169/99365 co-relation queries the response was YES. [2024-02-02 16:10:45,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31285 conditions, 4948 events. 2711/4948 cut-off events. For 99169/99365 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 34376 event pairs, 222 based on Foata normal form. 56/4886 useless extension candidates. Maximal degree in co-relation 31181. Up to 1798 conditions per place. [2024-02-02 16:10:45,750 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 288 selfloop transitions, 249 changer transitions 0/563 dead transitions. [2024-02-02 16:10:45,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 563 transitions, 10482 flow [2024-02-02 16:10:45,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-02 16:10:45,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-02 16:10:45,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 405 transitions. [2024-02-02 16:10:45,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4267650158061117 [2024-02-02 16:10:45,752 INFO L175 Difference]: Start difference. First operand has 358 places, 493 transitions, 8855 flow. Second operand 13 states and 405 transitions. [2024-02-02 16:10:45,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 563 transitions, 10482 flow [2024-02-02 16:10:46,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 563 transitions, 10150 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-02-02 16:10:46,194 INFO L231 Difference]: Finished difference. Result has 364 places, 503 transitions, 9200 flow [2024-02-02 16:10:46,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8529, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9200, PETRI_PLACES=364, PETRI_TRANSITIONS=503} [2024-02-02 16:10:46,195 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 287 predicate places. [2024-02-02 16:10:46,195 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 503 transitions, 9200 flow [2024-02-02 16:10:46,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:46,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:10:46,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:10:46,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-02-02 16:10:46,196 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:10:46,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:10:46,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1057719329, now seen corresponding path program 2 times [2024-02-02 16:10:46,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:10:46,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996342106] [2024-02-02 16:10:46,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:10:46,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:10:46,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:10:46,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:10:46,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:10:46,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996342106] [2024-02-02 16:10:46,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996342106] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:10:46,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:10:46,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 16:10:46,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951071036] [2024-02-02 16:10:46,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:10:46,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 16:10:46,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:10:46,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 16:10:46,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-02-02 16:10:46,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:10:46,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 503 transitions, 9200 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:46,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:10:46,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:10:46,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:10:47,758 INFO L124 PetriNetUnfolderBase]: 2701/4929 cut-off events. [2024-02-02 16:10:47,759 INFO L125 PetriNetUnfolderBase]: For 108522/109121 co-relation queries the response was YES. [2024-02-02 16:10:47,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32545 conditions, 4929 events. 2701/4929 cut-off events. For 108522/109121 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 34168 event pairs, 397 based on Foata normal form. 81/4874 useless extension candidates. Maximal degree in co-relation 32439. Up to 1971 conditions per place. [2024-02-02 16:10:47,813 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 345 selfloop transitions, 189 changer transitions 0/568 dead transitions. [2024-02-02 16:10:47,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 568 transitions, 10710 flow [2024-02-02 16:10:47,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-02 16:10:47,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-02 16:10:47,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 377 transitions. [2024-02-02 16:10:47,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.430365296803653 [2024-02-02 16:10:47,814 INFO L175 Difference]: Start difference. First operand has 364 places, 503 transitions, 9200 flow. Second operand 12 states and 377 transitions. [2024-02-02 16:10:47,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 568 transitions, 10710 flow [2024-02-02 16:10:48,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 568 transitions, 10175 flow, removed 26 selfloop flow, removed 12 redundant places. [2024-02-02 16:10:48,188 INFO L231 Difference]: Finished difference. Result has 364 places, 503 transitions, 9078 flow [2024-02-02 16:10:48,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8685, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9078, PETRI_PLACES=364, PETRI_TRANSITIONS=503} [2024-02-02 16:10:48,189 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 287 predicate places. [2024-02-02 16:10:48,189 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 503 transitions, 9078 flow [2024-02-02 16:10:48,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:48,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:10:48,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:10:48,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-02-02 16:10:48,189 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:10:48,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:10:48,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1483693307, now seen corresponding path program 6 times [2024-02-02 16:10:48,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:10:48,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33965551] [2024-02-02 16:10:48,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:10:48,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:10:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:10:48,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:10:48,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:10:48,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33965551] [2024-02-02 16:10:48,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33965551] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:10:48,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:10:48,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 16:10:48,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905041174] [2024-02-02 16:10:48,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:10:48,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 16:10:48,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:10:48,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 16:10:48,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-02-02 16:10:48,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:10:48,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 503 transitions, 9078 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:48,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:10:48,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:10:48,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:10:49,592 INFO L124 PetriNetUnfolderBase]: 2627/4827 cut-off events. [2024-02-02 16:10:49,592 INFO L125 PetriNetUnfolderBase]: For 100509/100693 co-relation queries the response was YES. [2024-02-02 16:10:49,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31034 conditions, 4827 events. 2627/4827 cut-off events. For 100509/100693 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 33748 event pairs, 406 based on Foata normal form. 68/4789 useless extension candidates. Maximal degree in co-relation 30928. Up to 2428 conditions per place. [2024-02-02 16:10:49,643 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 361 selfloop transitions, 170 changer transitions 0/557 dead transitions. [2024-02-02 16:10:49,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 557 transitions, 10633 flow [2024-02-02 16:10:49,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-02 16:10:49,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-02 16:10:49,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 319 transitions. [2024-02-02 16:10:49,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436986301369863 [2024-02-02 16:10:49,645 INFO L175 Difference]: Start difference. First operand has 364 places, 503 transitions, 9078 flow. Second operand 10 states and 319 transitions. [2024-02-02 16:10:49,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 557 transitions, 10633 flow [2024-02-02 16:10:50,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 557 transitions, 10255 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-02-02 16:10:50,088 INFO L231 Difference]: Finished difference. Result has 363 places, 503 transitions, 9068 flow [2024-02-02 16:10:50,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8700, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9068, PETRI_PLACES=363, PETRI_TRANSITIONS=503} [2024-02-02 16:10:50,089 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 286 predicate places. [2024-02-02 16:10:50,089 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 503 transitions, 9068 flow [2024-02-02 16:10:50,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:50,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:10:50,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:10:50,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-02-02 16:10:50,090 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:10:50,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:10:50,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1437185319, now seen corresponding path program 7 times [2024-02-02 16:10:50,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:10:50,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518856305] [2024-02-02 16:10:50,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:10:50,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:10:50,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:10:50,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:10:50,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:10:50,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518856305] [2024-02-02 16:10:50,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518856305] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:10:50,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:10:50,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 16:10:50,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408784498] [2024-02-02 16:10:50,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:10:50,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 16:10:50,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:10:50,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 16:10:50,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-02-02 16:10:50,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:10:50,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 503 transitions, 9068 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:50,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:10:50,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:10:50,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:10:51,697 INFO L124 PetriNetUnfolderBase]: 2585/4757 cut-off events. [2024-02-02 16:10:51,697 INFO L125 PetriNetUnfolderBase]: For 100492/100676 co-relation queries the response was YES. [2024-02-02 16:10:51,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30590 conditions, 4757 events. 2585/4757 cut-off events. For 100492/100676 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 33331 event pairs, 384 based on Foata normal form. 64/4715 useless extension candidates. Maximal degree in co-relation 30483. Up to 2414 conditions per place. [2024-02-02 16:10:51,760 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 363 selfloop transitions, 170 changer transitions 0/559 dead transitions. [2024-02-02 16:10:51,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 559 transitions, 10637 flow [2024-02-02 16:10:51,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-02 16:10:51,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-02 16:10:51,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 345 transitions. [2024-02-02 16:10:51,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42963885429638854 [2024-02-02 16:10:51,761 INFO L175 Difference]: Start difference. First operand has 363 places, 503 transitions, 9068 flow. Second operand 11 states and 345 transitions. [2024-02-02 16:10:51,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 559 transitions, 10637 flow [2024-02-02 16:10:52,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 559 transitions, 10306 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-02-02 16:10:52,196 INFO L231 Difference]: Finished difference. Result has 366 places, 503 transitions, 9113 flow [2024-02-02 16:10:52,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8737, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9113, PETRI_PLACES=366, PETRI_TRANSITIONS=503} [2024-02-02 16:10:52,196 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 289 predicate places. [2024-02-02 16:10:52,197 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 503 transitions, 9113 flow [2024-02-02 16:10:52,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:52,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:10:52,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:10:52,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-02-02 16:10:52,197 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:10:52,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:10:52,198 INFO L85 PathProgramCache]: Analyzing trace with hash 232496905, now seen corresponding path program 3 times [2024-02-02 16:10:52,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:10:52,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689618498] [2024-02-02 16:10:52,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:10:52,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:10:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:10:52,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:10:52,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:10:52,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689618498] [2024-02-02 16:10:52,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689618498] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:10:52,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:10:52,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 16:10:52,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375316901] [2024-02-02 16:10:52,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:10:52,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 16:10:52,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:10:52,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 16:10:52,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-02-02 16:10:52,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:10:52,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 503 transitions, 9113 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:52,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:10:52,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:10:52,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:10:53,644 INFO L124 PetriNetUnfolderBase]: 2605/4751 cut-off events. [2024-02-02 16:10:53,645 INFO L125 PetriNetUnfolderBase]: For 105083/105676 co-relation queries the response was YES. [2024-02-02 16:10:53,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31067 conditions, 4751 events. 2605/4751 cut-off events. For 105083/105676 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 33018 event pairs, 519 based on Foata normal form. 77/4675 useless extension candidates. Maximal degree in co-relation 30959. Up to 3452 conditions per place. [2024-02-02 16:10:53,698 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 428 selfloop transitions, 110 changer transitions 0/572 dead transitions. [2024-02-02 16:10:53,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 572 transitions, 10709 flow [2024-02-02 16:10:53,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-02 16:10:53,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-02 16:10:53,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 398 transitions. [2024-02-02 16:10:53,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41938883034773444 [2024-02-02 16:10:53,700 INFO L175 Difference]: Start difference. First operand has 366 places, 503 transitions, 9113 flow. Second operand 13 states and 398 transitions. [2024-02-02 16:10:53,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 572 transitions, 10709 flow [2024-02-02 16:10:54,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 572 transitions, 10382 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-02-02 16:10:54,206 INFO L231 Difference]: Finished difference. Result has 369 places, 503 transitions, 9028 flow [2024-02-02 16:10:54,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8790, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9028, PETRI_PLACES=369, PETRI_TRANSITIONS=503} [2024-02-02 16:10:54,206 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 292 predicate places. [2024-02-02 16:10:54,206 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 503 transitions, 9028 flow [2024-02-02 16:10:54,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:54,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:10:54,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:10:54,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-02-02 16:10:54,207 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:10:54,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:10:54,207 INFO L85 PathProgramCache]: Analyzing trace with hash -175585699, now seen corresponding path program 8 times [2024-02-02 16:10:54,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:10:54,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074523052] [2024-02-02 16:10:54,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:10:54,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:10:54,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:10:54,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:10:54,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:10:54,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074523052] [2024-02-02 16:10:54,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074523052] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:10:54,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:10:54,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 16:10:54,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886633423] [2024-02-02 16:10:54,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:10:54,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 16:10:54,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:10:54,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 16:10:54,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-02-02 16:10:54,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:10:54,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 503 transitions, 9028 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:54,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:10:54,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:10:54,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:10:55,589 INFO L124 PetriNetUnfolderBase]: 2525/4657 cut-off events. [2024-02-02 16:10:55,589 INFO L125 PetriNetUnfolderBase]: For 97001/97185 co-relation queries the response was YES. [2024-02-02 16:10:55,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29734 conditions, 4657 events. 2525/4657 cut-off events. For 97001/97185 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 32527 event pairs, 380 based on Foata normal form. 68/4619 useless extension candidates. Maximal degree in co-relation 29626. Up to 2394 conditions per place. [2024-02-02 16:10:55,644 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 339 selfloop transitions, 182 changer transitions 0/547 dead transitions. [2024-02-02 16:10:55,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 547 transitions, 10420 flow [2024-02-02 16:10:55,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-02 16:10:55,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-02 16:10:55,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 315 transitions. [2024-02-02 16:10:55,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4315068493150685 [2024-02-02 16:10:55,645 INFO L175 Difference]: Start difference. First operand has 369 places, 503 transitions, 9028 flow. Second operand 10 states and 315 transitions. [2024-02-02 16:10:55,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 547 transitions, 10420 flow [2024-02-02 16:10:56,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 547 transitions, 10107 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-02-02 16:10:56,067 INFO L231 Difference]: Finished difference. Result has 366 places, 503 transitions, 9095 flow [2024-02-02 16:10:56,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8715, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9095, PETRI_PLACES=366, PETRI_TRANSITIONS=503} [2024-02-02 16:10:56,068 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 289 predicate places. [2024-02-02 16:10:56,068 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 503 transitions, 9095 flow [2024-02-02 16:10:56,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:56,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:10:56,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:10:56,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-02-02 16:10:56,069 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:10:56,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:10:56,069 INFO L85 PathProgramCache]: Analyzing trace with hash 233390635, now seen corresponding path program 4 times [2024-02-02 16:10:56,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:10:56,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381509632] [2024-02-02 16:10:56,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:10:56,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:10:56,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:10:56,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:10:56,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:10:56,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381509632] [2024-02-02 16:10:56,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381509632] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:10:56,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:10:56,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 16:10:56,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104640794] [2024-02-02 16:10:56,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:10:56,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 16:10:56,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:10:56,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 16:10:56,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-02-02 16:10:56,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:10:56,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 503 transitions, 9095 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:56,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:10:56,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:10:56,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:10:57,537 INFO L124 PetriNetUnfolderBase]: 2541/4647 cut-off events. [2024-02-02 16:10:57,537 INFO L125 PetriNetUnfolderBase]: For 100069/100656 co-relation queries the response was YES. [2024-02-02 16:10:57,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30232 conditions, 4647 events. 2541/4647 cut-off events. For 100069/100656 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 32287 event pairs, 505 based on Foata normal form. 81/4574 useless extension candidates. Maximal degree in co-relation 30123. Up to 3398 conditions per place. [2024-02-02 16:10:57,586 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 414 selfloop transitions, 116 changer transitions 0/564 dead transitions. [2024-02-02 16:10:57,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 564 transitions, 10519 flow [2024-02-02 16:10:57,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-02-02 16:10:57,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-02-02 16:10:57,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 417 transitions. [2024-02-02 16:10:57,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4080234833659491 [2024-02-02 16:10:57,588 INFO L175 Difference]: Start difference. First operand has 366 places, 503 transitions, 9095 flow. Second operand 14 states and 417 transitions. [2024-02-02 16:10:57,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 564 transitions, 10519 flow [2024-02-02 16:10:57,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 564 transitions, 10118 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-02-02 16:10:57,945 INFO L231 Difference]: Finished difference. Result has 370 places, 503 transitions, 8938 flow [2024-02-02 16:10:57,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8694, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=8938, PETRI_PLACES=370, PETRI_TRANSITIONS=503} [2024-02-02 16:10:57,946 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 293 predicate places. [2024-02-02 16:10:57,946 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 503 transitions, 8938 flow [2024-02-02 16:10:57,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:57,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:10:57,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:10:57,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-02-02 16:10:57,947 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:10:57,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:10:57,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1872227441, now seen corresponding path program 5 times [2024-02-02 16:10:57,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:10:57,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988128462] [2024-02-02 16:10:57,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:10:57,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:10:57,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:10:58,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:10:58,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:10:58,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988128462] [2024-02-02 16:10:58,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988128462] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:10:58,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:10:58,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 16:10:58,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177214638] [2024-02-02 16:10:58,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:10:58,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 16:10:58,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:10:58,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 16:10:58,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-02-02 16:10:58,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:10:58,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 503 transitions, 8938 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:58,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:10:58,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:10:58,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:10:59,490 INFO L124 PetriNetUnfolderBase]: 2857/5189 cut-off events. [2024-02-02 16:10:59,491 INFO L125 PetriNetUnfolderBase]: For 106797/107403 co-relation queries the response was YES. [2024-02-02 16:10:59,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32889 conditions, 5189 events. 2857/5189 cut-off events. For 106797/107403 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 36477 event pairs, 567 based on Foata normal form. 97/5117 useless extension candidates. Maximal degree in co-relation 32779. Up to 3912 conditions per place. [2024-02-02 16:10:59,555 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 469 selfloop transitions, 100 changer transitions 0/603 dead transitions. [2024-02-02 16:10:59,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 603 transitions, 11115 flow [2024-02-02 16:10:59,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-02 16:10:59,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-02 16:10:59,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 373 transitions. [2024-02-02 16:10:59,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4257990867579909 [2024-02-02 16:10:59,557 INFO L175 Difference]: Start difference. First operand has 370 places, 503 transitions, 8938 flow. Second operand 12 states and 373 transitions. [2024-02-02 16:10:59,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 603 transitions, 11115 flow [2024-02-02 16:10:59,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 603 transitions, 10959 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-02-02 16:10:59,974 INFO L231 Difference]: Finished difference. Result has 377 places, 533 transitions, 9591 flow [2024-02-02 16:10:59,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8782, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9591, PETRI_PLACES=377, PETRI_TRANSITIONS=533} [2024-02-02 16:10:59,975 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 300 predicate places. [2024-02-02 16:10:59,975 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 533 transitions, 9591 flow [2024-02-02 16:10:59,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:10:59,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:10:59,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:10:59,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-02-02 16:10:59,976 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:10:59,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:10:59,976 INFO L85 PathProgramCache]: Analyzing trace with hash 351515479, now seen corresponding path program 9 times [2024-02-02 16:10:59,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:10:59,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857761970] [2024-02-02 16:10:59,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:10:59,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:10:59,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:11:00,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:11:00,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:11:00,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857761970] [2024-02-02 16:11:00,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857761970] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:11:00,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:11:00,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 16:11:00,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791679192] [2024-02-02 16:11:00,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:11:00,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 16:11:00,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:11:00,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 16:11:00,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-02-02 16:11:00,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:11:00,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 533 transitions, 9591 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:00,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:11:00,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:11:00,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:11:01,497 INFO L124 PetriNetUnfolderBase]: 2793/5139 cut-off events. [2024-02-02 16:11:01,498 INFO L125 PetriNetUnfolderBase]: For 105115/105302 co-relation queries the response was YES. [2024-02-02 16:11:01,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32509 conditions, 5139 events. 2793/5139 cut-off events. For 105115/105302 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 36390 event pairs, 398 based on Foata normal form. 44/5077 useless extension candidates. Maximal degree in co-relation 32395. Up to 1766 conditions per place. [2024-02-02 16:11:01,558 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 339 selfloop transitions, 231 changer transitions 0/596 dead transitions. [2024-02-02 16:11:01,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 596 transitions, 11279 flow [2024-02-02 16:11:01,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-02 16:11:01,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-02 16:11:01,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 375 transitions. [2024-02-02 16:11:01,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4280821917808219 [2024-02-02 16:11:01,559 INFO L175 Difference]: Start difference. First operand has 377 places, 533 transitions, 9591 flow. Second operand 12 states and 375 transitions. [2024-02-02 16:11:01,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 596 transitions, 11279 flow [2024-02-02 16:11:01,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 596 transitions, 11158 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-02-02 16:11:02,000 INFO L231 Difference]: Finished difference. Result has 383 places, 533 transitions, 9948 flow [2024-02-02 16:11:02,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9470, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9948, PETRI_PLACES=383, PETRI_TRANSITIONS=533} [2024-02-02 16:11:02,001 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 306 predicate places. [2024-02-02 16:11:02,001 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 533 transitions, 9948 flow [2024-02-02 16:11:02,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:02,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:11:02,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:11:02,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-02-02 16:11:02,002 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:11:02,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:11:02,002 INFO L85 PathProgramCache]: Analyzing trace with hash 825060203, now seen corresponding path program 6 times [2024-02-02 16:11:02,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:11:02,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467290914] [2024-02-02 16:11:02,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:11:02,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:11:02,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:11:02,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:11:02,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:11:02,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467290914] [2024-02-02 16:11:02,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467290914] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:11:02,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:11:02,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 16:11:02,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679455565] [2024-02-02 16:11:02,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:11:02,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 16:11:02,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:11:02,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 16:11:02,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-02-02 16:11:02,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:11:02,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 533 transitions, 9948 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:02,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:11:02,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:11:02,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:11:03,648 INFO L124 PetriNetUnfolderBase]: 2829/5135 cut-off events. [2024-02-02 16:11:03,648 INFO L125 PetriNetUnfolderBase]: For 120930/121538 co-relation queries the response was YES. [2024-02-02 16:11:03,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33932 conditions, 5135 events. 2829/5135 cut-off events. For 120930/121538 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 36060 event pairs, 563 based on Foata normal form. 101/5067 useless extension candidates. Maximal degree in co-relation 33817. Up to 3886 conditions per place. [2024-02-02 16:11:03,709 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 458 selfloop transitions, 104 changer transitions 0/596 dead transitions. [2024-02-02 16:11:03,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 596 transitions, 11522 flow [2024-02-02 16:11:03,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-02 16:11:03,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-02 16:11:03,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 371 transitions. [2024-02-02 16:11:03,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4235159817351598 [2024-02-02 16:11:03,710 INFO L175 Difference]: Start difference. First operand has 383 places, 533 transitions, 9948 flow. Second operand 12 states and 371 transitions. [2024-02-02 16:11:03,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 596 transitions, 11522 flow [2024-02-02 16:11:04,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 596 transitions, 11063 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-02-02 16:11:04,143 INFO L231 Difference]: Finished difference. Result has 386 places, 535 transitions, 9776 flow [2024-02-02 16:11:04,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9489, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9776, PETRI_PLACES=386, PETRI_TRANSITIONS=535} [2024-02-02 16:11:04,143 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 309 predicate places. [2024-02-02 16:11:04,144 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 535 transitions, 9776 flow [2024-02-02 16:11:04,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:04,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:11:04,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:11:04,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-02-02 16:11:04,144 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:11:04,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:11:04,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1811906311, now seen corresponding path program 7 times [2024-02-02 16:11:04,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:11:04,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62294015] [2024-02-02 16:11:04,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:11:04,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:11:04,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:11:04,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:11:04,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:11:04,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62294015] [2024-02-02 16:11:04,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62294015] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:11:04,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:11:04,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 16:11:04,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089860109] [2024-02-02 16:11:04,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:11:04,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 16:11:04,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:11:04,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 16:11:04,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-02-02 16:11:04,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:11:04,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 535 transitions, 9776 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:04,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:11:04,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:11:04,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:11:05,678 INFO L124 PetriNetUnfolderBase]: 2899/5301 cut-off events. [2024-02-02 16:11:05,678 INFO L125 PetriNetUnfolderBase]: For 116010/116618 co-relation queries the response was YES. [2024-02-02 16:11:05,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33856 conditions, 5301 events. 2899/5301 cut-off events. For 116010/116618 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 37657 event pairs, 452 based on Foata normal form. 97/5250 useless extension candidates. Maximal degree in co-relation 33738. Up to 2650 conditions per place. [2024-02-02 16:11:05,751 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 394 selfloop transitions, 188 changer transitions 0/616 dead transitions. [2024-02-02 16:11:05,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 616 transitions, 11603 flow [2024-02-02 16:11:05,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-02 16:11:05,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-02 16:11:05,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 377 transitions. [2024-02-02 16:11:05,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.430365296803653 [2024-02-02 16:11:05,753 INFO L175 Difference]: Start difference. First operand has 386 places, 535 transitions, 9776 flow. Second operand 12 states and 377 transitions. [2024-02-02 16:11:05,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 616 transitions, 11603 flow [2024-02-02 16:11:06,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 616 transitions, 11452 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-02-02 16:11:06,282 INFO L231 Difference]: Finished difference. Result has 391 places, 544 transitions, 10131 flow [2024-02-02 16:11:06,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9625, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10131, PETRI_PLACES=391, PETRI_TRANSITIONS=544} [2024-02-02 16:11:06,282 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 314 predicate places. [2024-02-02 16:11:06,283 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 544 transitions, 10131 flow [2024-02-02 16:11:06,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:06,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:11:06,283 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] [2024-02-02 16:11:06,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-02-02 16:11:06,283 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:11:06,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:11:06,284 INFO L85 PathProgramCache]: Analyzing trace with hash -277517199, now seen corresponding path program 8 times [2024-02-02 16:11:06,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:11:06,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648233541] [2024-02-02 16:11:06,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:11:06,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:11:06,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:11:06,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:11:06,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:11:06,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648233541] [2024-02-02 16:11:06,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648233541] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:11:06,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:11:06,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 16:11:06,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022637599] [2024-02-02 16:11:06,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:11:06,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 16:11:06,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:11:06,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 16:11:06,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-02-02 16:11:06,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:11:06,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 544 transitions, 10131 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:06,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:11:06,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:11:06,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:11:07,919 INFO L124 PetriNetUnfolderBase]: 2949/5348 cut-off events. [2024-02-02 16:11:07,920 INFO L125 PetriNetUnfolderBase]: For 125473/126102 co-relation queries the response was YES. [2024-02-02 16:11:07,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35101 conditions, 5348 events. 2949/5348 cut-off events. For 125473/126102 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 37738 event pairs, 618 based on Foata normal form. 97/5277 useless extension candidates. Maximal degree in co-relation 34981. Up to 4110 conditions per place. [2024-02-02 16:11:08,000 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 477 selfloop transitions, 100 changer transitions 0/611 dead transitions. [2024-02-02 16:11:08,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 611 transitions, 11726 flow [2024-02-02 16:11:08,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-02 16:11:08,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-02 16:11:08,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 395 transitions. [2024-02-02 16:11:08,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41622760800842995 [2024-02-02 16:11:08,001 INFO L175 Difference]: Start difference. First operand has 391 places, 544 transitions, 10131 flow. Second operand 13 states and 395 transitions. [2024-02-02 16:11:08,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 611 transitions, 11726 flow [2024-02-02 16:11:08,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 611 transitions, 11478 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-02-02 16:11:08,549 INFO L231 Difference]: Finished difference. Result has 397 places, 544 transitions, 10097 flow [2024-02-02 16:11:08,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9883, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10097, PETRI_PLACES=397, PETRI_TRANSITIONS=544} [2024-02-02 16:11:08,549 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 320 predicate places. [2024-02-02 16:11:08,549 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 544 transitions, 10097 flow [2024-02-02 16:11:08,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:08,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:11:08,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:11:08,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-02-02 16:11:08,550 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:11:08,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:11:08,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1645969073, now seen corresponding path program 9 times [2024-02-02 16:11:08,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:11:08,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036483915] [2024-02-02 16:11:08,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:11:08,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:11:08,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:11:08,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:11:08,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:11:08,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036483915] [2024-02-02 16:11:08,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036483915] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:11:08,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:11:08,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 16:11:08,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236496844] [2024-02-02 16:11:08,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:11:08,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 16:11:08,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:11:08,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 16:11:08,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-02-02 16:11:08,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:11:08,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 544 transitions, 10097 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:08,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:11:08,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:11:08,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:11:10,171 INFO L124 PetriNetUnfolderBase]: 2875/5264 cut-off events. [2024-02-02 16:11:10,171 INFO L125 PetriNetUnfolderBase]: For 123610/124218 co-relation queries the response was YES. [2024-02-02 16:11:10,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34119 conditions, 5264 events. 2875/5264 cut-off events. For 123610/124218 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 37451 event pairs, 448 based on Foata normal form. 97/5213 useless extension candidates. Maximal degree in co-relation 33998. Up to 2642 conditions per place. [2024-02-02 16:11:10,232 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 400 selfloop transitions, 188 changer transitions 0/622 dead transitions. [2024-02-02 16:11:10,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 622 transitions, 11829 flow [2024-02-02 16:11:10,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-02-02 16:11:10,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-02-02 16:11:10,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 430 transitions. [2024-02-02 16:11:10,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4207436399217221 [2024-02-02 16:11:10,234 INFO L175 Difference]: Start difference. First operand has 397 places, 544 transitions, 10097 flow. Second operand 14 states and 430 transitions. [2024-02-02 16:11:10,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 622 transitions, 11829 flow [2024-02-02 16:11:10,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 622 transitions, 11556 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-02-02 16:11:10,666 INFO L231 Difference]: Finished difference. Result has 399 places, 544 transitions, 10208 flow [2024-02-02 16:11:10,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9824, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=10208, PETRI_PLACES=399, PETRI_TRANSITIONS=544} [2024-02-02 16:11:10,666 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 322 predicate places. [2024-02-02 16:11:10,666 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 544 transitions, 10208 flow [2024-02-02 16:11:10,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:10,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:11:10,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:11:10,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-02-02 16:11:10,667 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:11:10,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:11:10,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1621208723, now seen corresponding path program 10 times [2024-02-02 16:11:10,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:11:10,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629737469] [2024-02-02 16:11:10,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:11:10,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:11:10,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:11:10,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:11:10,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:11:10,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629737469] [2024-02-02 16:11:10,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629737469] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:11:10,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:11:10,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 16:11:10,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826752602] [2024-02-02 16:11:10,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:11:10,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 16:11:10,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:11:10,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 16:11:10,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-02-02 16:11:10,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:11:10,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 544 transitions, 10208 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:10,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:11:10,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:11:10,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:11:12,264 INFO L124 PetriNetUnfolderBase]: 2863/5244 cut-off events. [2024-02-02 16:11:12,264 INFO L125 PetriNetUnfolderBase]: For 124136/124745 co-relation queries the response was YES. [2024-02-02 16:11:12,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34286 conditions, 5244 events. 2863/5244 cut-off events. For 124136/124745 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 37270 event pairs, 427 based on Foata normal form. 87/5183 useless extension candidates. Maximal degree in co-relation 34164. Up to 2638 conditions per place. [2024-02-02 16:11:12,332 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 365 selfloop transitions, 211 changer transitions 0/610 dead transitions. [2024-02-02 16:11:12,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 610 transitions, 11774 flow [2024-02-02 16:11:12,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-02 16:11:12,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-02 16:11:12,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 395 transitions. [2024-02-02 16:11:12,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41622760800842995 [2024-02-02 16:11:12,334 INFO L175 Difference]: Start difference. First operand has 399 places, 544 transitions, 10208 flow. Second operand 13 states and 395 transitions. [2024-02-02 16:11:12,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 610 transitions, 11774 flow [2024-02-02 16:11:12,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 610 transitions, 11467 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-02-02 16:11:12,864 INFO L231 Difference]: Finished difference. Result has 404 places, 544 transitions, 10330 flow [2024-02-02 16:11:12,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9901, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10330, PETRI_PLACES=404, PETRI_TRANSITIONS=544} [2024-02-02 16:11:12,865 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 327 predicate places. [2024-02-02 16:11:12,865 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 544 transitions, 10330 flow [2024-02-02 16:11:12,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:12,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:11:12,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:11:12,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-02-02 16:11:12,866 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:11:12,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:11:12,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1551286201, now seen corresponding path program 5 times [2024-02-02 16:11:12,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:11:12,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713133212] [2024-02-02 16:11:12,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:11:12,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:11:12,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:11:13,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:11:13,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:11:13,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713133212] [2024-02-02 16:11:13,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713133212] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:11:13,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:11:13,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 16:11:13,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770178413] [2024-02-02 16:11:13,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:11:13,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 16:11:13,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:11:13,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 16:11:13,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-02-02 16:11:13,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:11:13,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 544 transitions, 10330 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:13,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:11:13,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:11:13,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:11:14,401 INFO L124 PetriNetUnfolderBase]: 2873/5281 cut-off events. [2024-02-02 16:11:14,402 INFO L125 PetriNetUnfolderBase]: For 125932/126551 co-relation queries the response was YES. [2024-02-02 16:11:14,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34753 conditions, 5281 events. 2873/5281 cut-off events. For 125932/126551 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 37756 event pairs, 546 based on Foata normal form. 75/5181 useless extension candidates. Maximal degree in co-relation 34630. Up to 4014 conditions per place. [2024-02-02 16:11:14,470 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 449 selfloop transitions, 87 changer transitions 0/570 dead transitions. [2024-02-02 16:11:14,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 570 transitions, 11591 flow [2024-02-02 16:11:14,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 16:11:14,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 16:11:14,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 221 transitions. [2024-02-02 16:11:14,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4324853228962818 [2024-02-02 16:11:14,472 INFO L175 Difference]: Start difference. First operand has 404 places, 544 transitions, 10330 flow. Second operand 7 states and 221 transitions. [2024-02-02 16:11:14,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 570 transitions, 11591 flow [2024-02-02 16:11:14,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 570 transitions, 11303 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-02-02 16:11:14,997 INFO L231 Difference]: Finished difference. Result has 404 places, 546 transitions, 10260 flow [2024-02-02 16:11:14,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10046, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10260, PETRI_PLACES=404, PETRI_TRANSITIONS=546} [2024-02-02 16:11:14,997 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 327 predicate places. [2024-02-02 16:11:14,997 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 546 transitions, 10260 flow [2024-02-02 16:11:14,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:14,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:11:14,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:11:14,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-02-02 16:11:14,998 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:11:14,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:11:14,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1072186541, now seen corresponding path program 6 times [2024-02-02 16:11:14,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:11:14,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373439245] [2024-02-02 16:11:14,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:11:14,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:11:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:11:15,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:11:15,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:11:15,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373439245] [2024-02-02 16:11:15,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373439245] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:11:15,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:11:15,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 16:11:15,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514352364] [2024-02-02 16:11:15,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:11:15,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 16:11:15,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:11:15,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 16:11:15,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-02-02 16:11:15,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:11:15,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 546 transitions, 10260 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:15,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:11:15,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:11:15,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:11:16,653 INFO L124 PetriNetUnfolderBase]: 2887/5295 cut-off events. [2024-02-02 16:11:16,653 INFO L125 PetriNetUnfolderBase]: For 125992/126609 co-relation queries the response was YES. [2024-02-02 16:11:16,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34541 conditions, 5295 events. 2887/5295 cut-off events. For 125992/126609 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 37828 event pairs, 675 based on Foata normal form. 53/5165 useless extension candidates. Maximal degree in co-relation 34417. Up to 4492 conditions per place. [2024-02-02 16:11:16,713 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 453 selfloop transitions, 75 changer transitions 0/562 dead transitions. [2024-02-02 16:11:16,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 562 transitions, 11377 flow [2024-02-02 16:11:16,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 16:11:16,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 16:11:16,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 215 transitions. [2024-02-02 16:11:16,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4207436399217221 [2024-02-02 16:11:16,714 INFO L175 Difference]: Start difference. First operand has 404 places, 546 transitions, 10260 flow. Second operand 7 states and 215 transitions. [2024-02-02 16:11:16,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 562 transitions, 11377 flow [2024-02-02 16:11:17,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 562 transitions, 11248 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-02-02 16:11:17,219 INFO L231 Difference]: Finished difference. Result has 407 places, 546 transitions, 10307 flow [2024-02-02 16:11:17,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10131, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10307, PETRI_PLACES=407, PETRI_TRANSITIONS=546} [2024-02-02 16:11:17,219 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 330 predicate places. [2024-02-02 16:11:17,220 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 546 transitions, 10307 flow [2024-02-02 16:11:17,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:17,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:11:17,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:11:17,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-02-02 16:11:17,221 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:11:17,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:11:17,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1524415789, now seen corresponding path program 7 times [2024-02-02 16:11:17,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:11:17,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961889896] [2024-02-02 16:11:17,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:11:17,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:11:17,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:11:17,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:11:17,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:11:17,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961889896] [2024-02-02 16:11:17,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961889896] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:11:17,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:11:17,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 16:11:17,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590837603] [2024-02-02 16:11:17,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:11:17,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 16:11:17,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:11:17,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 16:11:17,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-02-02 16:11:17,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:11:17,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 546 transitions, 10307 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:17,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:11:17,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:11:17,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:11:18,669 INFO L124 PetriNetUnfolderBase]: 2869/5269 cut-off events. [2024-02-02 16:11:18,670 INFO L125 PetriNetUnfolderBase]: For 125682/126299 co-relation queries the response was YES. [2024-02-02 16:11:18,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34306 conditions, 5269 events. 2869/5269 cut-off events. For 125682/126299 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 37624 event pairs, 556 based on Foata normal form. 55/5149 useless extension candidates. Maximal degree in co-relation 34182. Up to 4014 conditions per place. [2024-02-02 16:11:18,737 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 433 selfloop transitions, 99 changer transitions 0/566 dead transitions. [2024-02-02 16:11:18,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 566 transitions, 11470 flow [2024-02-02 16:11:18,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 16:11:18,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 16:11:18,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 217 transitions. [2024-02-02 16:11:18,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4246575342465753 [2024-02-02 16:11:18,739 INFO L175 Difference]: Start difference. First operand has 407 places, 546 transitions, 10307 flow. Second operand 7 states and 217 transitions. [2024-02-02 16:11:18,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 566 transitions, 11470 flow [2024-02-02 16:11:19,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 566 transitions, 11304 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-02-02 16:11:19,278 INFO L231 Difference]: Finished difference. Result has 407 places, 546 transitions, 10349 flow [2024-02-02 16:11:19,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10141, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10349, PETRI_PLACES=407, PETRI_TRANSITIONS=546} [2024-02-02 16:11:19,279 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 330 predicate places. [2024-02-02 16:11:19,280 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 546 transitions, 10349 flow [2024-02-02 16:11:19,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:19,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:11:19,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:11:19,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-02-02 16:11:19,280 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:11:19,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:11:19,281 INFO L85 PathProgramCache]: Analyzing trace with hash -354529603, now seen corresponding path program 8 times [2024-02-02 16:11:19,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:11:19,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884885519] [2024-02-02 16:11:19,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:11:19,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:11:19,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:11:19,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:11:19,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:11:19,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884885519] [2024-02-02 16:11:19,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884885519] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:11:19,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:11:19,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 16:11:19,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422665768] [2024-02-02 16:11:19,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:11:19,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 16:11:19,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:11:19,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 16:11:19,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-02-02 16:11:19,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:11:19,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 546 transitions, 10349 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:19,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:11:19,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:11:19,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:11:20,831 INFO L124 PetriNetUnfolderBase]: 2945/5368 cut-off events. [2024-02-02 16:11:20,832 INFO L125 PetriNetUnfolderBase]: For 131299/131875 co-relation queries the response was YES. [2024-02-02 16:11:20,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35309 conditions, 5368 events. 2945/5368 cut-off events. For 131299/131875 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 38188 event pairs, 523 based on Foata normal form. 92/5267 useless extension candidates. Maximal degree in co-relation 35186. Up to 4096 conditions per place. [2024-02-02 16:11:20,898 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 430 selfloop transitions, 104 changer transitions 0/568 dead transitions. [2024-02-02 16:11:20,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 568 transitions, 11559 flow [2024-02-02 16:11:20,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 16:11:20,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 16:11:20,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 216 transitions. [2024-02-02 16:11:20,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4227005870841487 [2024-02-02 16:11:20,899 INFO L175 Difference]: Start difference. First operand has 407 places, 546 transitions, 10349 flow. Second operand 7 states and 216 transitions. [2024-02-02 16:11:20,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 568 transitions, 11559 flow [2024-02-02 16:11:21,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 568 transitions, 11320 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-02-02 16:11:21,450 INFO L231 Difference]: Finished difference. Result has 407 places, 551 transitions, 10439 flow [2024-02-02 16:11:21,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10121, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10439, PETRI_PLACES=407, PETRI_TRANSITIONS=551} [2024-02-02 16:11:21,451 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 330 predicate places. [2024-02-02 16:11:21,451 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 551 transitions, 10439 flow [2024-02-02 16:11:21,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:21,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:11:21,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:11:21,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-02-02 16:11:21,452 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:11:21,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:11:21,452 INFO L85 PathProgramCache]: Analyzing trace with hash 375794639, now seen corresponding path program 9 times [2024-02-02 16:11:21,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:11:21,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043916090] [2024-02-02 16:11:21,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:11:21,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:11:21,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:11:21,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:11:21,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:11:21,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043916090] [2024-02-02 16:11:21,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043916090] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:11:21,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:11:21,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 16:11:21,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437417136] [2024-02-02 16:11:21,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:11:21,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 16:11:21,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:11:21,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 16:11:21,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-02-02 16:11:21,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:11:21,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 551 transitions, 10439 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:21,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:11:21,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:11:21,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:11:22,999 INFO L124 PetriNetUnfolderBase]: 2955/5398 cut-off events. [2024-02-02 16:11:22,999 INFO L125 PetriNetUnfolderBase]: For 131134/131714 co-relation queries the response was YES. [2024-02-02 16:11:23,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35704 conditions, 5398 events. 2955/5398 cut-off events. For 131134/131714 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 38611 event pairs, 525 based on Foata normal form. 92/5297 useless extension candidates. Maximal degree in co-relation 35581. Up to 4112 conditions per place. [2024-02-02 16:11:23,066 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 427 selfloop transitions, 111 changer transitions 0/572 dead transitions. [2024-02-02 16:11:23,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 572 transitions, 11650 flow [2024-02-02 16:11:23,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 16:11:23,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 16:11:23,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 216 transitions. [2024-02-02 16:11:23,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4227005870841487 [2024-02-02 16:11:23,067 INFO L175 Difference]: Start difference. First operand has 407 places, 551 transitions, 10439 flow. Second operand 7 states and 216 transitions. [2024-02-02 16:11:23,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 572 transitions, 11650 flow [2024-02-02 16:11:23,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 572 transitions, 11457 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-02-02 16:11:23,601 INFO L231 Difference]: Finished difference. Result has 409 places, 555 transitions, 10530 flow [2024-02-02 16:11:23,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10265, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10530, PETRI_PLACES=409, PETRI_TRANSITIONS=555} [2024-02-02 16:11:23,601 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 332 predicate places. [2024-02-02 16:11:23,601 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 555 transitions, 10530 flow [2024-02-02 16:11:23,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:23,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:11:23,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:11:23,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-02-02 16:11:23,602 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:11:23,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:11:23,602 INFO L85 PathProgramCache]: Analyzing trace with hash 410650109, now seen corresponding path program 10 times [2024-02-02 16:11:23,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:11:23,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563367917] [2024-02-02 16:11:23,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:11:23,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:11:23,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:11:23,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:11:23,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:11:23,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563367917] [2024-02-02 16:11:23,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563367917] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:11:23,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:11:23,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 16:11:23,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160980146] [2024-02-02 16:11:23,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:11:23,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 16:11:23,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:11:23,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 16:11:23,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-02-02 16:11:23,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:11:23,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 555 transitions, 10530 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:23,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:11:23,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:11:23,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:11:24,989 INFO L124 PetriNetUnfolderBase]: 2959/5410 cut-off events. [2024-02-02 16:11:24,989 INFO L125 PetriNetUnfolderBase]: For 133061/133637 co-relation queries the response was YES. [2024-02-02 16:11:25,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35516 conditions, 5410 events. 2959/5410 cut-off events. For 133061/133637 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 38683 event pairs, 546 based on Foata normal form. 66/5283 useless extension candidates. Maximal degree in co-relation 35395. Up to 4124 conditions per place. [2024-02-02 16:11:25,061 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 416 selfloop transitions, 123 changer transitions 0/573 dead transitions. [2024-02-02 16:11:25,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 573 transitions, 11690 flow [2024-02-02 16:11:25,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 16:11:25,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 16:11:25,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 213 transitions. [2024-02-02 16:11:25,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41682974559686886 [2024-02-02 16:11:25,062 INFO L175 Difference]: Start difference. First operand has 409 places, 555 transitions, 10530 flow. Second operand 7 states and 213 transitions. [2024-02-02 16:11:25,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 573 transitions, 11690 flow [2024-02-02 16:11:25,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 573 transitions, 11407 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-02-02 16:11:25,602 INFO L231 Difference]: Finished difference. Result has 404 places, 558 transitions, 10575 flow [2024-02-02 16:11:25,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10235, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10575, PETRI_PLACES=404, PETRI_TRANSITIONS=558} [2024-02-02 16:11:25,603 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 327 predicate places. [2024-02-02 16:11:25,603 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 558 transitions, 10575 flow [2024-02-02 16:11:25,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:25,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:11:25,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:11:25,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-02-02 16:11:25,604 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:11:25,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:11:25,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1135065599, now seen corresponding path program 11 times [2024-02-02 16:11:25,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:11:25,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015921378] [2024-02-02 16:11:25,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:11:25,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:11:25,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:11:25,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:11:25,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:11:25,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015921378] [2024-02-02 16:11:25,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015921378] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:11:25,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:11:25,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 16:11:25,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135441608] [2024-02-02 16:11:25,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:11:25,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 16:11:25,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:11:25,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 16:11:25,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-02-02 16:11:25,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:11:25,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 558 transitions, 10575 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:25,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:11:25,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:11:25,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:11:27,187 INFO L124 PetriNetUnfolderBase]: 2899/5357 cut-off events. [2024-02-02 16:11:27,188 INFO L125 PetriNetUnfolderBase]: For 131212/131827 co-relation queries the response was YES. [2024-02-02 16:11:27,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34691 conditions, 5357 events. 2899/5357 cut-off events. For 131212/131827 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 38551 event pairs, 451 based on Foata normal form. 81/5290 useless extension candidates. Maximal degree in co-relation 34577. Up to 2778 conditions per place. [2024-02-02 16:11:27,250 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 381 selfloop transitions, 197 changer transitions 0/612 dead transitions. [2024-02-02 16:11:27,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 612 transitions, 12179 flow [2024-02-02 16:11:27,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-02 16:11:27,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-02 16:11:27,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 318 transitions. [2024-02-02 16:11:27,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43561643835616437 [2024-02-02 16:11:27,252 INFO L175 Difference]: Start difference. First operand has 404 places, 558 transitions, 10575 flow. Second operand 10 states and 318 transitions. [2024-02-02 16:11:27,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 612 transitions, 12179 flow [2024-02-02 16:11:27,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 612 transitions, 11943 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-02-02 16:11:27,760 INFO L231 Difference]: Finished difference. Result has 409 places, 558 transitions, 10783 flow [2024-02-02 16:11:27,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10343, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10783, PETRI_PLACES=409, PETRI_TRANSITIONS=558} [2024-02-02 16:11:27,761 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 332 predicate places. [2024-02-02 16:11:27,761 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 558 transitions, 10783 flow [2024-02-02 16:11:27,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:27,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:11:27,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:11:27,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-02-02 16:11:27,762 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:11:27,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:11:27,762 INFO L85 PathProgramCache]: Analyzing trace with hash 773793389, now seen corresponding path program 12 times [2024-02-02 16:11:27,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:11:27,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779552248] [2024-02-02 16:11:27,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:11:27,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:11:27,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:11:28,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:11:28,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:11:28,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779552248] [2024-02-02 16:11:28,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779552248] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:11:28,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:11:28,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 16:11:28,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632711748] [2024-02-02 16:11:28,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:11:28,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 16:11:28,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:11:28,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 16:11:28,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-02-02 16:11:28,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:11:28,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 558 transitions, 10783 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:28,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:11:28,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:11:28,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:11:29,311 INFO L124 PetriNetUnfolderBase]: 2887/5338 cut-off events. [2024-02-02 16:11:29,311 INFO L125 PetriNetUnfolderBase]: For 137307/137923 co-relation queries the response was YES. [2024-02-02 16:11:29,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35060 conditions, 5338 events. 2887/5338 cut-off events. For 137307/137923 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 38321 event pairs, 484 based on Foata normal form. 81/5270 useless extension candidates. Maximal degree in co-relation 34946. Up to 2774 conditions per place. [2024-02-02 16:11:29,379 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 382 selfloop transitions, 197 changer transitions 0/613 dead transitions. [2024-02-02 16:11:29,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 613 transitions, 12331 flow [2024-02-02 16:11:29,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-02 16:11:29,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-02 16:11:29,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 342 transitions. [2024-02-02 16:11:29,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4259028642590286 [2024-02-02 16:11:29,381 INFO L175 Difference]: Start difference. First operand has 409 places, 558 transitions, 10783 flow. Second operand 11 states and 342 transitions. [2024-02-02 16:11:29,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 613 transitions, 12331 flow [2024-02-02 16:11:29,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 613 transitions, 11901 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-02-02 16:11:29,920 INFO L231 Difference]: Finished difference. Result has 410 places, 558 transitions, 10793 flow [2024-02-02 16:11:29,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10365, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10793, PETRI_PLACES=410, PETRI_TRANSITIONS=558} [2024-02-02 16:11:29,920 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 333 predicate places. [2024-02-02 16:11:29,921 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 558 transitions, 10793 flow [2024-02-02 16:11:29,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:29,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:11:29,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:11:29,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-02-02 16:11:29,921 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:11:29,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:11:29,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1135986299, now seen corresponding path program 13 times [2024-02-02 16:11:29,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:11:29,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067873229] [2024-02-02 16:11:29,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:11:29,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:11:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:11:30,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:11:30,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:11:30,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067873229] [2024-02-02 16:11:30,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067873229] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:11:30,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:11:30,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 16:11:30,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015215778] [2024-02-02 16:11:30,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:11:30,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 16:11:30,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:11:30,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 16:11:30,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-02-02 16:11:30,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:11:30,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 558 transitions, 10793 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:30,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:11:30,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:11:30,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:11:31,562 INFO L124 PetriNetUnfolderBase]: 2871/5306 cut-off events. [2024-02-02 16:11:31,563 INFO L125 PetriNetUnfolderBase]: For 136233/136855 co-relation queries the response was YES. [2024-02-02 16:11:31,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34686 conditions, 5306 events. 2871/5306 cut-off events. For 136233/136855 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 38125 event pairs, 446 based on Foata normal form. 85/5243 useless extension candidates. Maximal degree in co-relation 34572. Up to 2768 conditions per place. [2024-02-02 16:11:31,617 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 360 selfloop transitions, 209 changer transitions 0/603 dead transitions. [2024-02-02 16:11:31,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 603 transitions, 12165 flow [2024-02-02 16:11:31,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-02 16:11:31,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-02 16:11:31,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 314 transitions. [2024-02-02 16:11:31,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4301369863013699 [2024-02-02 16:11:31,619 INFO L175 Difference]: Start difference. First operand has 410 places, 558 transitions, 10793 flow. Second operand 10 states and 314 transitions. [2024-02-02 16:11:31,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 603 transitions, 12165 flow [2024-02-02 16:11:32,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 603 transitions, 11739 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-02-02 16:11:32,059 INFO L231 Difference]: Finished difference. Result has 408 places, 558 transitions, 10813 flow [2024-02-02 16:11:32,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10367, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10813, PETRI_PLACES=408, PETRI_TRANSITIONS=558} [2024-02-02 16:11:32,060 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 331 predicate places. [2024-02-02 16:11:32,060 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 558 transitions, 10813 flow [2024-02-02 16:11:32,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:32,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:11:32,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:11:32,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-02-02 16:11:32,061 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:11:32,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:11:32,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1745149563, now seen corresponding path program 14 times [2024-02-02 16:11:32,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:11:32,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661093413] [2024-02-02 16:11:32,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:11:32,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:11:32,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:11:32,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:11:32,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:11:32,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661093413] [2024-02-02 16:11:32,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661093413] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:11:32,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:11:32,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 16:11:32,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694189182] [2024-02-02 16:11:32,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:11:32,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 16:11:32,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:11:32,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 16:11:32,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-02-02 16:11:32,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:11:32,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 558 transitions, 10813 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:32,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:11:32,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:11:32,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:11:33,589 INFO L124 PetriNetUnfolderBase]: 2987/5516 cut-off events. [2024-02-02 16:11:33,589 INFO L125 PetriNetUnfolderBase]: For 135645/136273 co-relation queries the response was YES. [2024-02-02 16:11:33,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35699 conditions, 5516 events. 2987/5516 cut-off events. For 135645/136273 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 39830 event pairs, 329 based on Foata normal form. 97/5464 useless extension candidates. Maximal degree in co-relation 35586. Up to 1704 conditions per place. [2024-02-02 16:11:33,653 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 334 selfloop transitions, 266 changer transitions 0/634 dead transitions. [2024-02-02 16:11:33,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 634 transitions, 12667 flow [2024-02-02 16:11:33,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-02 16:11:33,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-02 16:11:33,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 353 transitions. [2024-02-02 16:11:33,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4396014943960149 [2024-02-02 16:11:33,655 INFO L175 Difference]: Start difference. First operand has 408 places, 558 transitions, 10813 flow. Second operand 11 states and 353 transitions. [2024-02-02 16:11:33,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 634 transitions, 12667 flow [2024-02-02 16:11:34,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 634 transitions, 12209 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-02-02 16:11:34,146 INFO L231 Difference]: Finished difference. Result has 409 places, 567 transitions, 11056 flow [2024-02-02 16:11:34,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10371, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=257, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11056, PETRI_PLACES=409, PETRI_TRANSITIONS=567} [2024-02-02 16:11:34,146 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 332 predicate places. [2024-02-02 16:11:34,147 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 567 transitions, 11056 flow [2024-02-02 16:11:34,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:34,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:11:34,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:11:34,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-02-02 16:11:34,147 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:11:34,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:11:34,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1000551013, now seen corresponding path program 15 times [2024-02-02 16:11:34,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:11:34,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489596538] [2024-02-02 16:11:34,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:11:34,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:11:34,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:11:34,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:11:34,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:11:34,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489596538] [2024-02-02 16:11:34,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489596538] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:11:34,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:11:34,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 16:11:34,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908484017] [2024-02-02 16:11:34,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:11:34,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 16:11:34,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:11:34,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 16:11:34,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-02-02 16:11:34,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:11:34,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 567 transitions, 11056 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:34,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:11:34,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:11:34,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:11:35,731 INFO L124 PetriNetUnfolderBase]: 3128/5719 cut-off events. [2024-02-02 16:11:35,731 INFO L125 PetriNetUnfolderBase]: For 143408/144032 co-relation queries the response was YES. [2024-02-02 16:11:35,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37524 conditions, 5719 events. 3128/5719 cut-off events. For 143408/144032 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 41151 event pairs, 279 based on Foata normal form. 114/5665 useless extension candidates. Maximal degree in co-relation 37411. Up to 1775 conditions per place. [2024-02-02 16:11:35,795 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 318 selfloop transitions, 301 changer transitions 0/653 dead transitions. [2024-02-02 16:11:35,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 653 transitions, 13195 flow [2024-02-02 16:11:35,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-02 16:11:35,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-02 16:11:35,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 376 transitions. [2024-02-02 16:11:35,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4292237442922374 [2024-02-02 16:11:35,797 INFO L175 Difference]: Start difference. First operand has 409 places, 567 transitions, 11056 flow. Second operand 12 states and 376 transitions. [2024-02-02 16:11:35,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 653 transitions, 13195 flow [2024-02-02 16:11:36,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 653 transitions, 12738 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-02-02 16:11:36,318 INFO L231 Difference]: Finished difference. Result has 415 places, 590 transitions, 11646 flow [2024-02-02 16:11:36,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10629, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=278, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11646, PETRI_PLACES=415, PETRI_TRANSITIONS=590} [2024-02-02 16:11:36,319 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 338 predicate places. [2024-02-02 16:11:36,319 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 590 transitions, 11646 flow [2024-02-02 16:11:36,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:36,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:11:36,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:11:36,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-02-02 16:11:36,320 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:11:36,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:11:36,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1771844283, now seen corresponding path program 16 times [2024-02-02 16:11:36,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:11:36,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389675182] [2024-02-02 16:11:36,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:11:36,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:11:36,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:11:36,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:11:36,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:11:36,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389675182] [2024-02-02 16:11:36,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389675182] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:11:36,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:11:36,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 16:11:36,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697198910] [2024-02-02 16:11:36,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:11:36,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 16:11:36,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:11:36,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 16:11:36,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-02-02 16:11:36,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:11:36,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 590 transitions, 11646 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:36,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:11:36,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:11:36,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:11:38,014 INFO L124 PetriNetUnfolderBase]: 3047/5626 cut-off events. [2024-02-02 16:11:38,014 INFO L125 PetriNetUnfolderBase]: For 144191/144893 co-relation queries the response was YES. [2024-02-02 16:11:38,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38110 conditions, 5626 events. 3047/5626 cut-off events. For 144191/144893 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 40870 event pairs, 346 based on Foata normal form. 97/5574 useless extension candidates. Maximal degree in co-relation 37995. Up to 1732 conditions per place. [2024-02-02 16:11:38,086 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 347 selfloop transitions, 281 changer transitions 0/662 dead transitions. [2024-02-02 16:11:38,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 662 transitions, 13508 flow [2024-02-02 16:11:38,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-02 16:11:38,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-02 16:11:38,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 408 transitions. [2024-02-02 16:11:38,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42992623814541625 [2024-02-02 16:11:38,088 INFO L175 Difference]: Start difference. First operand has 415 places, 590 transitions, 11646 flow. Second operand 13 states and 408 transitions. [2024-02-02 16:11:38,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 662 transitions, 13508 flow [2024-02-02 16:11:38,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 662 transitions, 13015 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-02-02 16:11:38,634 INFO L231 Difference]: Finished difference. Result has 419 places, 590 transitions, 11743 flow [2024-02-02 16:11:38,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11169, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=281, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=11743, PETRI_PLACES=419, PETRI_TRANSITIONS=590} [2024-02-02 16:11:38,634 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 342 predicate places. [2024-02-02 16:11:38,635 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 590 transitions, 11743 flow [2024-02-02 16:11:38,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:38,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:11:38,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:11:38,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-02-02 16:11:38,635 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:11:38,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:11:38,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1886120263, now seen corresponding path program 17 times [2024-02-02 16:11:38,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:11:38,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057577784] [2024-02-02 16:11:38,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:11:38,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:11:38,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:11:38,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:11:38,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:11:38,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057577784] [2024-02-02 16:11:38,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057577784] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:11:38,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:11:38,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 16:11:38,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187131973] [2024-02-02 16:11:38,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:11:38,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 16:11:38,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:11:38,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 16:11:38,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-02-02 16:11:38,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:11:38,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 590 transitions, 11743 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:38,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:11:38,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:11:38,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:11:40,250 INFO L124 PetriNetUnfolderBase]: 3104/5679 cut-off events. [2024-02-02 16:11:40,251 INFO L125 PetriNetUnfolderBase]: For 152840/153500 co-relation queries the response was YES. [2024-02-02 16:11:40,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38807 conditions, 5679 events. 3104/5679 cut-off events. For 152840/153500 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 40850 event pairs, 279 based on Foata normal form. 114/5625 useless extension candidates. Maximal degree in co-relation 38692. Up to 1767 conditions per place. [2024-02-02 16:11:40,332 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 326 selfloop transitions, 301 changer transitions 0/661 dead transitions. [2024-02-02 16:11:40,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 661 transitions, 13613 flow [2024-02-02 16:11:40,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-02-02 16:11:40,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-02-02 16:11:40,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 431 transitions. [2024-02-02 16:11:40,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4217221135029354 [2024-02-02 16:11:40,333 INFO L175 Difference]: Start difference. First operand has 419 places, 590 transitions, 11743 flow. Second operand 14 states and 431 transitions. [2024-02-02 16:11:40,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 661 transitions, 13613 flow [2024-02-02 16:11:40,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 661 transitions, 13080 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-02-02 16:11:40,875 INFO L231 Difference]: Finished difference. Result has 423 places, 590 transitions, 11832 flow [2024-02-02 16:11:40,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11214, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=301, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=11832, PETRI_PLACES=423, PETRI_TRANSITIONS=590} [2024-02-02 16:11:40,876 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 346 predicate places. [2024-02-02 16:11:40,876 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 590 transitions, 11832 flow [2024-02-02 16:11:40,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:40,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:11:40,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:11:40,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-02-02 16:11:40,877 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:11:40,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:11:40,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1936596731, now seen corresponding path program 18 times [2024-02-02 16:11:40,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:11:40,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342155454] [2024-02-02 16:11:40,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:11:40,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:11:40,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:11:41,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:11:41,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:11:41,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342155454] [2024-02-02 16:11:41,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342155454] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:11:41,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:11:41,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 16:11:41,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531843212] [2024-02-02 16:11:41,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:11:41,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 16:11:41,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:11:41,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 16:11:41,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-02-02 16:11:41,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:11:41,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 590 transitions, 11832 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:41,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:11:41,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:11:41,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:11:42,593 INFO L124 PetriNetUnfolderBase]: 3023/5589 cut-off events. [2024-02-02 16:11:42,593 INFO L125 PetriNetUnfolderBase]: For 147229/147930 co-relation queries the response was YES. [2024-02-02 16:11:42,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38052 conditions, 5589 events. 3023/5589 cut-off events. For 147229/147930 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 40561 event pairs, 308 based on Foata normal form. 77/5517 useless extension candidates. Maximal degree in co-relation 37937. Up to 1724 conditions per place. [2024-02-02 16:11:42,652 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 301 selfloop transitions, 315 changer transitions 0/650 dead transitions. [2024-02-02 16:11:42,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 650 transitions, 13519 flow [2024-02-02 16:11:42,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-02 16:11:42,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-02 16:11:42,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 373 transitions. [2024-02-02 16:11:42,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4257990867579909 [2024-02-02 16:11:42,653 INFO L175 Difference]: Start difference. First operand has 423 places, 590 transitions, 11832 flow. Second operand 12 states and 373 transitions. [2024-02-02 16:11:42,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 650 transitions, 13519 flow [2024-02-02 16:11:43,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 650 transitions, 12940 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-02-02 16:11:43,118 INFO L231 Difference]: Finished difference. Result has 423 places, 590 transitions, 11899 flow [2024-02-02 16:11:43,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11259, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=315, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11899, PETRI_PLACES=423, PETRI_TRANSITIONS=590} [2024-02-02 16:11:43,119 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 346 predicate places. [2024-02-02 16:11:43,119 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 590 transitions, 11899 flow [2024-02-02 16:11:43,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:43,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:11:43,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:11:43,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-02-02 16:11:43,120 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:11:43,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:11:43,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1191998181, now seen corresponding path program 19 times [2024-02-02 16:11:43,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:11:43,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53627162] [2024-02-02 16:11:43,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:11:43,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:11:43,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:11:43,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:11:43,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:11:43,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53627162] [2024-02-02 16:11:43,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53627162] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:11:43,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:11:43,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 16:11:43,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21209238] [2024-02-02 16:11:43,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:11:43,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 16:11:43,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:11:43,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 16:11:43,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-02-02 16:11:43,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:11:43,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 590 transitions, 11899 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:43,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:11:43,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:11:43,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:11:44,834 INFO L124 PetriNetUnfolderBase]: 3280/6024 cut-off events. [2024-02-02 16:11:44,834 INFO L125 PetriNetUnfolderBase]: For 162736/163393 co-relation queries the response was YES. [2024-02-02 16:11:44,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40891 conditions, 6024 events. 3280/6024 cut-off events. For 162736/163393 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 43826 event pairs, 262 based on Foata normal form. 114/5976 useless extension candidates. Maximal degree in co-relation 40776. Up to 1835 conditions per place. [2024-02-02 16:11:44,912 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 293 selfloop transitions, 348 changer transitions 0/675 dead transitions. [2024-02-02 16:11:44,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 675 transitions, 14181 flow [2024-02-02 16:11:44,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-02 16:11:44,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-02 16:11:44,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 400 transitions. [2024-02-02 16:11:44,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4214963119072708 [2024-02-02 16:11:44,914 INFO L175 Difference]: Start difference. First operand has 423 places, 590 transitions, 11899 flow. Second operand 13 states and 400 transitions. [2024-02-02 16:11:44,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 675 transitions, 14181 flow [2024-02-02 16:11:45,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 675 transitions, 13758 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-02-02 16:11:45,625 INFO L231 Difference]: Finished difference. Result has 430 places, 618 transitions, 12902 flow [2024-02-02 16:11:45,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11496, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=320, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12902, PETRI_PLACES=430, PETRI_TRANSITIONS=618} [2024-02-02 16:11:45,627 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 353 predicate places. [2024-02-02 16:11:45,627 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 618 transitions, 12902 flow [2024-02-02 16:11:45,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:45,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:11:45,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:11:45,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-02-02 16:11:45,628 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:11:45,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:11:45,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1054634955, now seen corresponding path program 20 times [2024-02-02 16:11:45,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:11:45,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224146942] [2024-02-02 16:11:45,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:11:45,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:11:45,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:11:45,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:11:45,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:11:45,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224146942] [2024-02-02 16:11:45,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224146942] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:11:45,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:11:45,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-02 16:11:45,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842075980] [2024-02-02 16:11:45,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:11:45,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 16:11:45,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:11:45,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 16:11:45,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-02-02 16:11:46,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:11:46,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 618 transitions, 12902 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:46,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:11:46,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:11:46,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:11:47,521 INFO L124 PetriNetUnfolderBase]: 3412/6214 cut-off events. [2024-02-02 16:11:47,522 INFO L125 PetriNetUnfolderBase]: For 177734/178391 co-relation queries the response was YES. [2024-02-02 16:11:47,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43068 conditions, 6214 events. 3412/6214 cut-off events. For 177734/178391 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 45137 event pairs, 280 based on Foata normal form. 88/6134 useless extension candidates. Maximal degree in co-relation 42952. Up to 1879 conditions per place. [2024-02-02 16:11:47,605 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 288 selfloop transitions, 361 changer transitions 0/683 dead transitions. [2024-02-02 16:11:47,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 683 transitions, 14738 flow [2024-02-02 16:11:47,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-02 16:11:47,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-02 16:11:47,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 394 transitions. [2024-02-02 16:11:47,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41517386722866173 [2024-02-02 16:11:47,606 INFO L175 Difference]: Start difference. First operand has 430 places, 618 transitions, 12902 flow. Second operand 13 states and 394 transitions. [2024-02-02 16:11:47,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 683 transitions, 14738 flow [2024-02-02 16:11:48,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 683 transitions, 14281 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-02-02 16:11:48,209 INFO L231 Difference]: Finished difference. Result has 437 places, 632 transitions, 13475 flow [2024-02-02 16:11:48,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12455, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=347, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=13475, PETRI_PLACES=437, PETRI_TRANSITIONS=632} [2024-02-02 16:11:48,210 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 360 predicate places. [2024-02-02 16:11:48,210 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 632 transitions, 13475 flow [2024-02-02 16:11:48,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:48,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:11:48,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:11:48,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-02-02 16:11:48,211 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:11:48,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:11:48,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1439256504, now seen corresponding path program 1 times [2024-02-02 16:11:48,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:11:48,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783184796] [2024-02-02 16:11:48,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:11:48,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:11:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:11:48,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:11:48,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:11:48,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783184796] [2024-02-02 16:11:48,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783184796] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:11:48,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:11:48,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 16:11:48,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276246612] [2024-02-02 16:11:48,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:11:48,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 16:11:48,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:11:48,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 16:11:48,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-02-02 16:11:48,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:11:48,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 632 transitions, 13475 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:48,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:11:48,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:11:48,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:11:50,423 INFO L124 PetriNetUnfolderBase]: 3367/6375 cut-off events. [2024-02-02 16:11:50,424 INFO L125 PetriNetUnfolderBase]: For 199591/200037 co-relation queries the response was YES. [2024-02-02 16:11:50,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45655 conditions, 6375 events. 3367/6375 cut-off events. For 199591/200037 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 48639 event pairs, 589 based on Foata normal form. 74/6282 useless extension candidates. Maximal degree in co-relation 45537. Up to 1927 conditions per place. [2024-02-02 16:11:50,513 INFO L140 encePairwiseOnDemand]: 61/73 looper letters, 503 selfloop transitions, 143 changer transitions 17/697 dead transitions. [2024-02-02 16:11:50,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 697 transitions, 15549 flow [2024-02-02 16:11:50,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-02 16:11:50,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-02 16:11:50,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 325 transitions. [2024-02-02 16:11:50,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4452054794520548 [2024-02-02 16:11:50,515 INFO L175 Difference]: Start difference. First operand has 437 places, 632 transitions, 13475 flow. Second operand 10 states and 325 transitions. [2024-02-02 16:11:50,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 697 transitions, 15549 flow [2024-02-02 16:11:51,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 697 transitions, 14810 flow, removed 46 selfloop flow, removed 15 redundant places. [2024-02-02 16:11:51,338 INFO L231 Difference]: Finished difference. Result has 434 places, 617 transitions, 12922 flow [2024-02-02 16:11:51,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12792, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12922, PETRI_PLACES=434, PETRI_TRANSITIONS=617} [2024-02-02 16:11:51,339 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 357 predicate places. [2024-02-02 16:11:51,339 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 617 transitions, 12922 flow [2024-02-02 16:11:51,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:51,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:11:51,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:11:51,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-02-02 16:11:51,340 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:11:51,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:11:51,340 INFO L85 PathProgramCache]: Analyzing trace with hash -2082046030, now seen corresponding path program 1 times [2024-02-02 16:11:51,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:11:51,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906519968] [2024-02-02 16:11:51,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:11:51,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:11:51,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:11:51,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:11:51,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:11:51,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906519968] [2024-02-02 16:11:51,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906519968] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:11:51,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:11:51,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 16:11:51,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334691049] [2024-02-02 16:11:51,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:11:51,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 16:11:51,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:11:51,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 16:11:51,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-02-02 16:11:51,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:11:51,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 617 transitions, 12922 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:51,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:11:51,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:11:51,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:11:53,435 INFO L124 PetriNetUnfolderBase]: 3449/6608 cut-off events. [2024-02-02 16:11:53,435 INFO L125 PetriNetUnfolderBase]: For 193253/193981 co-relation queries the response was YES. [2024-02-02 16:11:53,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45439 conditions, 6608 events. 3449/6608 cut-off events. For 193253/193981 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 51416 event pairs, 756 based on Foata normal form. 107/6578 useless extension candidates. Maximal degree in co-relation 45320. Up to 2628 conditions per place. [2024-02-02 16:11:53,520 INFO L140 encePairwiseOnDemand]: 60/73 looper letters, 566 selfloop transitions, 118 changer transitions 4/722 dead transitions. [2024-02-02 16:11:53,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 722 transitions, 15399 flow [2024-02-02 16:11:53,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-02 16:11:53,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-02 16:11:53,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 358 transitions. [2024-02-02 16:11:53,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44582814445828145 [2024-02-02 16:11:53,522 INFO L175 Difference]: Start difference. First operand has 434 places, 617 transitions, 12922 flow. Second operand 11 states and 358 transitions. [2024-02-02 16:11:53,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 722 transitions, 15399 flow [2024-02-02 16:11:54,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 722 transitions, 15116 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-02-02 16:11:54,245 INFO L231 Difference]: Finished difference. Result has 439 places, 620 transitions, 12964 flow [2024-02-02 16:11:54,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12651, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12964, PETRI_PLACES=439, PETRI_TRANSITIONS=620} [2024-02-02 16:11:54,246 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 362 predicate places. [2024-02-02 16:11:54,246 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 620 transitions, 12964 flow [2024-02-02 16:11:54,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:54,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:11:54,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:11:54,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-02-02 16:11:54,247 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:11:54,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:11:54,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1000130548, now seen corresponding path program 2 times [2024-02-02 16:11:54,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:11:54,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241147537] [2024-02-02 16:11:54,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:11:54,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:11:54,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:11:54,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:11:54,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:11:54,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241147537] [2024-02-02 16:11:54,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241147537] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:11:54,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:11:54,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 16:11:54,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512166732] [2024-02-02 16:11:54,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:11:54,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 16:11:54,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:11:54,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 16:11:54,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-02-02 16:11:54,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:11:54,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 620 transitions, 12964 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:54,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:11:54,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:11:54,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:11:56,244 INFO L124 PetriNetUnfolderBase]: 3484/6844 cut-off events. [2024-02-02 16:11:56,245 INFO L125 PetriNetUnfolderBase]: For 210992/211480 co-relation queries the response was YES. [2024-02-02 16:11:56,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48022 conditions, 6844 events. 3484/6844 cut-off events. For 210992/211480 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 54574 event pairs, 558 based on Foata normal form. 94/6760 useless extension candidates. Maximal degree in co-relation 47901. Up to 2849 conditions per place. [2024-02-02 16:11:56,327 INFO L140 encePairwiseOnDemand]: 56/73 looper letters, 494 selfloop transitions, 162 changer transitions 4/694 dead transitions. [2024-02-02 16:11:56,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 694 transitions, 15109 flow [2024-02-02 16:11:56,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-02 16:11:56,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-02 16:11:56,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 364 transitions. [2024-02-02 16:11:56,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4533001245330012 [2024-02-02 16:11:56,329 INFO L175 Difference]: Start difference. First operand has 439 places, 620 transitions, 12964 flow. Second operand 11 states and 364 transitions. [2024-02-02 16:11:56,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 694 transitions, 15109 flow [2024-02-02 16:11:57,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 694 transitions, 14945 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-02-02 16:11:57,132 INFO L231 Difference]: Finished difference. Result has 445 places, 619 transitions, 13188 flow [2024-02-02 16:11:57,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12800, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13188, PETRI_PLACES=445, PETRI_TRANSITIONS=619} [2024-02-02 16:11:57,133 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 368 predicate places. [2024-02-02 16:11:57,133 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 619 transitions, 13188 flow [2024-02-02 16:11:57,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:57,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:11:57,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:11:57,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-02-02 16:11:57,134 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:11:57,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:11:57,134 INFO L85 PathProgramCache]: Analyzing trace with hash 871139500, now seen corresponding path program 3 times [2024-02-02 16:11:57,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:11:57,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760728380] [2024-02-02 16:11:57,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:11:57,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:11:57,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:11:57,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:11:57,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:11:57,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760728380] [2024-02-02 16:11:57,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760728380] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:11:57,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:11:57,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 16:11:57,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048785334] [2024-02-02 16:11:57,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:11:57,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 16:11:57,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:11:57,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 16:11:57,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-02-02 16:11:57,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:11:57,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 619 transitions, 13188 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:11:57,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:11:57,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:11:57,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:11:59,240 INFO L124 PetriNetUnfolderBase]: 3479/6861 cut-off events. [2024-02-02 16:11:59,240 INFO L125 PetriNetUnfolderBase]: For 218238/218767 co-relation queries the response was YES. [2024-02-02 16:11:59,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49452 conditions, 6861 events. 3479/6861 cut-off events. For 218238/218767 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 54799 event pairs, 565 based on Foata normal form. 92/6784 useless extension candidates. Maximal degree in co-relation 49328. Up to 2849 conditions per place. [2024-02-02 16:11:59,323 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 500 selfloop transitions, 160 changer transitions 7/701 dead transitions. [2024-02-02 16:11:59,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 701 transitions, 15413 flow [2024-02-02 16:11:59,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-02 16:11:59,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-02 16:11:59,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 420 transitions. [2024-02-02 16:11:59,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44257112750263433 [2024-02-02 16:11:59,325 INFO L175 Difference]: Start difference. First operand has 445 places, 619 transitions, 13188 flow. Second operand 13 states and 420 transitions. [2024-02-02 16:11:59,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 701 transitions, 15413 flow [2024-02-02 16:12:00,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 701 transitions, 15176 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-02-02 16:12:00,142 INFO L231 Difference]: Finished difference. Result has 450 places, 612 transitions, 13220 flow [2024-02-02 16:12:00,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12959, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=13220, PETRI_PLACES=450, PETRI_TRANSITIONS=612} [2024-02-02 16:12:00,143 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 373 predicate places. [2024-02-02 16:12:00,143 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 612 transitions, 13220 flow [2024-02-02 16:12:00,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:12:00,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:12:00,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:12:00,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-02-02 16:12:00,144 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:12:00,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:12:00,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1129778306, now seen corresponding path program 4 times [2024-02-02 16:12:00,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:12:00,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491296250] [2024-02-02 16:12:00,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:12:00,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:12:00,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:12:00,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:12:00,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:12:00,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491296250] [2024-02-02 16:12:00,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491296250] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:12:00,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:12:00,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 16:12:00,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246332556] [2024-02-02 16:12:00,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:12:00,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 16:12:00,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:12:00,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 16:12:00,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-02-02 16:12:00,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:12:00,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 612 transitions, 13220 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:12:00,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:12:00,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:12:00,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:12:02,628 INFO L124 PetriNetUnfolderBase]: 3575/7156 cut-off events. [2024-02-02 16:12:02,628 INFO L125 PetriNetUnfolderBase]: For 232391/232950 co-relation queries the response was YES. [2024-02-02 16:12:02,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52567 conditions, 7156 events. 3575/7156 cut-off events. For 232391/232950 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 58289 event pairs, 583 based on Foata normal form. 80/7052 useless extension candidates. Maximal degree in co-relation 52443. Up to 2163 conditions per place. [2024-02-02 16:12:02,718 INFO L140 encePairwiseOnDemand]: 55/73 looper letters, 423 selfloop transitions, 255 changer transitions 8/720 dead transitions. [2024-02-02 16:12:02,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 720 transitions, 16204 flow [2024-02-02 16:12:02,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-02-02 16:12:02,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-02-02 16:12:02,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 450 transitions. [2024-02-02 16:12:02,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44031311154598823 [2024-02-02 16:12:02,719 INFO L175 Difference]: Start difference. First operand has 450 places, 612 transitions, 13220 flow. Second operand 14 states and 450 transitions. [2024-02-02 16:12:02,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 720 transitions, 16204 flow [2024-02-02 16:12:03,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 720 transitions, 15914 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-02-02 16:12:03,569 INFO L231 Difference]: Finished difference. Result has 454 places, 633 transitions, 14241 flow [2024-02-02 16:12:03,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12938, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=227, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=14241, PETRI_PLACES=454, PETRI_TRANSITIONS=633} [2024-02-02 16:12:03,569 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 377 predicate places. [2024-02-02 16:12:03,569 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 633 transitions, 14241 flow [2024-02-02 16:12:03,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:12:03,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:12:03,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:12:03,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-02-02 16:12:03,570 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:12:03,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:12:03,570 INFO L85 PathProgramCache]: Analyzing trace with hash -933333460, now seen corresponding path program 5 times [2024-02-02 16:12:03,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:12:03,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53666470] [2024-02-02 16:12:03,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:12:03,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:12:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:12:03,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:12:03,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:12:03,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53666470] [2024-02-02 16:12:03,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53666470] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:12:03,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:12:03,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 16:12:03,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052731696] [2024-02-02 16:12:03,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:12:03,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 16:12:03,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:12:03,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 16:12:03,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-02-02 16:12:03,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:12:03,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 633 transitions, 14241 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:12:03,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:12:03,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:12:03,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:12:06,109 INFO L124 PetriNetUnfolderBase]: 3577/7191 cut-off events. [2024-02-02 16:12:06,109 INFO L125 PetriNetUnfolderBase]: For 242010/242569 co-relation queries the response was YES. [2024-02-02 16:12:06,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54787 conditions, 7191 events. 3577/7191 cut-off events. For 242010/242569 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 58832 event pairs, 522 based on Foata normal form. 80/7087 useless extension candidates. Maximal degree in co-relation 54662. Up to 2316 conditions per place. [2024-02-02 16:12:06,207 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 429 selfloop transitions, 227 changer transitions 13/703 dead transitions. [2024-02-02 16:12:06,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 703 transitions, 16326 flow [2024-02-02 16:12:06,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-02 16:12:06,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-02 16:12:06,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 382 transitions. [2024-02-02 16:12:06,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4360730593607306 [2024-02-02 16:12:06,208 INFO L175 Difference]: Start difference. First operand has 454 places, 633 transitions, 14241 flow. Second operand 12 states and 382 transitions. [2024-02-02 16:12:06,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 703 transitions, 16326 flow [2024-02-02 16:12:07,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 703 transitions, 16045 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-02-02 16:12:07,146 INFO L231 Difference]: Finished difference. Result has 457 places, 625 transitions, 14371 flow [2024-02-02 16:12:07,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=13969, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14371, PETRI_PLACES=457, PETRI_TRANSITIONS=625} [2024-02-02 16:12:07,147 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 380 predicate places. [2024-02-02 16:12:07,147 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 625 transitions, 14371 flow [2024-02-02 16:12:07,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:12:07,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:12:07,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:12:07,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-02-02 16:12:07,148 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:12:07,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:12:07,148 INFO L85 PathProgramCache]: Analyzing trace with hash -839382714, now seen corresponding path program 2 times [2024-02-02 16:12:07,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:12:07,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081426188] [2024-02-02 16:12:07,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:12:07,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:12:07,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:12:07,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:12:07,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:12:07,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081426188] [2024-02-02 16:12:07,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081426188] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:12:07,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:12:07,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 16:12:07,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036629528] [2024-02-02 16:12:07,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:12:07,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 16:12:07,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:12:07,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 16:12:07,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-02-02 16:12:07,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:12:07,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 625 transitions, 14371 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:12:07,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:12:07,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:12:07,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:12:09,569 INFO L124 PetriNetUnfolderBase]: 3636/7168 cut-off events. [2024-02-02 16:12:09,569 INFO L125 PetriNetUnfolderBase]: For 242800/243990 co-relation queries the response was YES. [2024-02-02 16:12:09,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56092 conditions, 7168 events. 3636/7168 cut-off events. For 242800/243990 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 57471 event pairs, 902 based on Foata normal form. 89/7085 useless extension candidates. Maximal degree in co-relation 55965. Up to 3728 conditions per place. [2024-02-02 16:12:09,675 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 524 selfloop transitions, 118 changer transitions 15/690 dead transitions. [2024-02-02 16:12:09,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 690 transitions, 16330 flow [2024-02-02 16:12:09,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-02 16:12:09,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-02 16:12:09,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 350 transitions. [2024-02-02 16:12:09,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43586550435865506 [2024-02-02 16:12:09,677 INFO L175 Difference]: Start difference. First operand has 457 places, 625 transitions, 14371 flow. Second operand 11 states and 350 transitions. [2024-02-02 16:12:09,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 690 transitions, 16330 flow [2024-02-02 16:12:11,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 690 transitions, 15927 flow, removed 12 selfloop flow, removed 16 redundant places. [2024-02-02 16:12:11,055 INFO L231 Difference]: Finished difference. Result has 452 places, 610 transitions, 13982 flow [2024-02-02 16:12:11,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=13976, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13982, PETRI_PLACES=452, PETRI_TRANSITIONS=610} [2024-02-02 16:12:11,055 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 375 predicate places. [2024-02-02 16:12:11,056 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 610 transitions, 13982 flow [2024-02-02 16:12:11,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:12:11,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:12:11,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:12:11,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-02-02 16:12:11,056 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:12:11,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:12:11,057 INFO L85 PathProgramCache]: Analyzing trace with hash 945981058, now seen corresponding path program 6 times [2024-02-02 16:12:11,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:12:11,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702371935] [2024-02-02 16:12:11,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:12:11,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:12:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:12:11,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:12:11,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:12:11,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702371935] [2024-02-02 16:12:11,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702371935] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:12:11,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:12:11,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 16:12:11,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298603568] [2024-02-02 16:12:11,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:12:11,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 16:12:11,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:12:11,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 16:12:11,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-02-02 16:12:11,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:12:11,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 610 transitions, 13982 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:12:11,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:12:11,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:12:11,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:12:13,670 INFO L124 PetriNetUnfolderBase]: 3444/7018 cut-off events. [2024-02-02 16:12:13,671 INFO L125 PetriNetUnfolderBase]: For 236638/237121 co-relation queries the response was YES. [2024-02-02 16:12:13,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54245 conditions, 7018 events. 3444/7018 cut-off events. For 236638/237121 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 57759 event pairs, 800 based on Foata normal form. 106/6963 useless extension candidates. Maximal degree in co-relation 54120. Up to 2113 conditions per place. [2024-02-02 16:12:13,748 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 421 selfloop transitions, 167 changer transitions 40/662 dead transitions. [2024-02-02 16:12:13,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 662 transitions, 15857 flow [2024-02-02 16:12:13,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-02 16:12:13,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-02 16:12:13,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 295 transitions. [2024-02-02 16:12:13,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4490106544901065 [2024-02-02 16:12:13,749 INFO L175 Difference]: Start difference. First operand has 452 places, 610 transitions, 13982 flow. Second operand 9 states and 295 transitions. [2024-02-02 16:12:13,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 662 transitions, 15857 flow [2024-02-02 16:12:14,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 662 transitions, 15482 flow, removed 18 selfloop flow, removed 20 redundant places. [2024-02-02 16:12:14,642 INFO L231 Difference]: Finished difference. Result has 441 places, 571 transitions, 13231 flow [2024-02-02 16:12:14,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=13631, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13231, PETRI_PLACES=441, PETRI_TRANSITIONS=571} [2024-02-02 16:12:14,643 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 364 predicate places. [2024-02-02 16:12:14,643 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 571 transitions, 13231 flow [2024-02-02 16:12:14,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:12:14,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:12:14,643 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, 1, 1] [2024-02-02 16:12:14,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-02-02 16:12:14,644 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:12:14,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:12:14,644 INFO L85 PathProgramCache]: Analyzing trace with hash 766969784, now seen corresponding path program 3 times [2024-02-02 16:12:14,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:12:14,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313486112] [2024-02-02 16:12:14,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:12:14,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:12:14,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:12:14,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:12:14,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:12:14,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313486112] [2024-02-02 16:12:14,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313486112] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:12:14,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:12:14,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 16:12:14,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849536486] [2024-02-02 16:12:14,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:12:14,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 16:12:14,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:12:14,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 16:12:14,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-02-02 16:12:14,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:12:14,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 571 transitions, 13231 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:12:14,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:12:14,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:12:14,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:12:17,239 INFO L124 PetriNetUnfolderBase]: 3580/7204 cut-off events. [2024-02-02 16:12:17,240 INFO L125 PetriNetUnfolderBase]: For 226162/227308 co-relation queries the response was YES. [2024-02-02 16:12:17,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55519 conditions, 7204 events. 3580/7204 cut-off events. For 226162/227308 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 59171 event pairs, 1154 based on Foata normal form. 67/7079 useless extension candidates. Maximal degree in co-relation 55398. Up to 4984 conditions per place. [2024-02-02 16:12:17,361 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 543 selfloop transitions, 88 changer transitions 11/674 dead transitions. [2024-02-02 16:12:17,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 674 transitions, 15636 flow [2024-02-02 16:12:17,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-02 16:12:17,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-02 16:12:17,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 378 transitions. [2024-02-02 16:12:17,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4315068493150685 [2024-02-02 16:12:17,363 INFO L175 Difference]: Start difference. First operand has 441 places, 571 transitions, 13231 flow. Second operand 12 states and 378 transitions. [2024-02-02 16:12:17,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 674 transitions, 15636 flow [2024-02-02 16:12:18,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 674 transitions, 15049 flow, removed 13 selfloop flow, removed 18 redundant places. [2024-02-02 16:12:18,376 INFO L231 Difference]: Finished difference. Result has 435 places, 562 transitions, 12627 flow [2024-02-02 16:12:18,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12648, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12627, PETRI_PLACES=435, PETRI_TRANSITIONS=562} [2024-02-02 16:12:18,377 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 358 predicate places. [2024-02-02 16:12:18,377 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 562 transitions, 12627 flow [2024-02-02 16:12:18,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:12:18,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:12:18,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:12:18,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-02-02 16:12:18,378 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:12:18,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:12:18,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1313171704, now seen corresponding path program 4 times [2024-02-02 16:12:18,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:12:18,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838412129] [2024-02-02 16:12:18,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:12:18,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:12:18,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:12:18,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:12:18,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:12:18,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838412129] [2024-02-02 16:12:18,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838412129] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:12:18,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:12:18,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 16:12:18,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764506296] [2024-02-02 16:12:18,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:12:18,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 16:12:18,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:12:18,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 16:12:18,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-02-02 16:12:18,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:12:18,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 562 transitions, 12627 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:12:18,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:12:18,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:12:18,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:12:20,815 INFO L124 PetriNetUnfolderBase]: 3503/7074 cut-off events. [2024-02-02 16:12:20,815 INFO L125 PetriNetUnfolderBase]: For 212276/213385 co-relation queries the response was YES. [2024-02-02 16:12:20,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53524 conditions, 7074 events. 3503/7074 cut-off events. For 212276/213385 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 57957 event pairs, 1133 based on Foata normal form. 61/6949 useless extension candidates. Maximal degree in co-relation 53406. Up to 4984 conditions per place. [2024-02-02 16:12:20,940 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 512 selfloop transitions, 92 changer transitions 20/656 dead transitions. [2024-02-02 16:12:20,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 656 transitions, 14832 flow [2024-02-02 16:12:20,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-02 16:12:20,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-02 16:12:20,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 399 transitions. [2024-02-02 16:12:20,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4204425711275026 [2024-02-02 16:12:20,942 INFO L175 Difference]: Start difference. First operand has 435 places, 562 transitions, 12627 flow. Second operand 13 states and 399 transitions. [2024-02-02 16:12:20,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 656 transitions, 14832 flow [2024-02-02 16:12:21,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 656 transitions, 14653 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-02-02 16:12:21,978 INFO L231 Difference]: Finished difference. Result has 438 places, 545 transitions, 12347 flow [2024-02-02 16:12:21,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12448, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12347, PETRI_PLACES=438, PETRI_TRANSITIONS=545} [2024-02-02 16:12:21,978 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 361 predicate places. [2024-02-02 16:12:21,979 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 545 transitions, 12347 flow [2024-02-02 16:12:21,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:12:21,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:12:21,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:12:21,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-02-02 16:12:21,979 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:12:21,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:12:21,980 INFO L85 PathProgramCache]: Analyzing trace with hash 831130252, now seen corresponding path program 5 times [2024-02-02 16:12:21,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:12:21,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441146723] [2024-02-02 16:12:21,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:12:21,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:12:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:12:22,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:12:22,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:12:22,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441146723] [2024-02-02 16:12:22,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441146723] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:12:22,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:12:22,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 16:12:22,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771449942] [2024-02-02 16:12:22,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:12:22,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 16:12:22,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:12:22,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 16:12:22,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-02-02 16:12:22,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:12:22,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 545 transitions, 12347 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:12:22,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:12:22,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:12:22,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:12:24,220 INFO L124 PetriNetUnfolderBase]: 3435/6938 cut-off events. [2024-02-02 16:12:24,220 INFO L125 PetriNetUnfolderBase]: For 206527/207635 co-relation queries the response was YES. [2024-02-02 16:12:24,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52580 conditions, 6938 events. 3435/6938 cut-off events. For 206527/207635 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 56673 event pairs, 1114 based on Foata normal form. 50/6800 useless extension candidates. Maximal degree in co-relation 52461. Up to 4984 conditions per place. [2024-02-02 16:12:24,312 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 513 selfloop transitions, 82 changer transitions 6/633 dead transitions. [2024-02-02 16:12:24,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 633 transitions, 14446 flow [2024-02-02 16:12:24,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-02 16:12:24,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-02 16:12:24,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 345 transitions. [2024-02-02 16:12:24,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42963885429638854 [2024-02-02 16:12:24,314 INFO L175 Difference]: Start difference. First operand has 438 places, 545 transitions, 12347 flow. Second operand 11 states and 345 transitions. [2024-02-02 16:12:24,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 633 transitions, 14446 flow [2024-02-02 16:12:25,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 633 transitions, 14297 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-02-02 16:12:25,203 INFO L231 Difference]: Finished difference. Result has 438 places, 540 transitions, 12271 flow [2024-02-02 16:12:25,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12198, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12271, PETRI_PLACES=438, PETRI_TRANSITIONS=540} [2024-02-02 16:12:25,204 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 361 predicate places. [2024-02-02 16:12:25,204 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 540 transitions, 12271 flow [2024-02-02 16:12:25,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:12:25,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:12:25,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:12:25,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-02-02 16:12:25,205 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:12:25,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:12:25,205 INFO L85 PathProgramCache]: Analyzing trace with hash -787155772, now seen corresponding path program 7 times [2024-02-02 16:12:25,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:12:25,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257693038] [2024-02-02 16:12:25,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:12:25,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:12:25,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:12:25,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:12:25,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:12:25,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257693038] [2024-02-02 16:12:25,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257693038] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:12:25,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:12:25,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 16:12:25,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849860347] [2024-02-02 16:12:25,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:12:25,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 16:12:25,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:12:25,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 16:12:25,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-02-02 16:12:25,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:12:25,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 540 transitions, 12271 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:12:25,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:12:25,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:12:25,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:12:27,431 INFO L124 PetriNetUnfolderBase]: 3225/6730 cut-off events. [2024-02-02 16:12:27,432 INFO L125 PetriNetUnfolderBase]: For 212865/213342 co-relation queries the response was YES. [2024-02-02 16:12:27,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50861 conditions, 6730 events. 3225/6730 cut-off events. For 212865/213342 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 56006 event pairs, 839 based on Foata normal form. 132/6715 useless extension candidates. Maximal degree in co-relation 50741. Up to 1908 conditions per place. [2024-02-02 16:12:27,680 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 406 selfloop transitions, 123 changer transitions 31/594 dead transitions. [2024-02-02 16:12:27,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 594 transitions, 14018 flow [2024-02-02 16:12:27,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-02 16:12:27,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-02 16:12:27,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 292 transitions. [2024-02-02 16:12:27,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-02-02 16:12:27,682 INFO L175 Difference]: Start difference. First operand has 438 places, 540 transitions, 12271 flow. Second operand 9 states and 292 transitions. [2024-02-02 16:12:27,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 594 transitions, 14018 flow [2024-02-02 16:12:28,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 594 transitions, 13840 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-02-02 16:12:28,472 INFO L231 Difference]: Finished difference. Result has 437 places, 509 transitions, 11809 flow [2024-02-02 16:12:28,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12093, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11809, PETRI_PLACES=437, PETRI_TRANSITIONS=509} [2024-02-02 16:12:28,473 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 360 predicate places. [2024-02-02 16:12:28,473 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 509 transitions, 11809 flow [2024-02-02 16:12:28,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:12:28,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:12:28,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:12:28,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-02-02 16:12:28,473 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:12:28,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:12:28,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1523903606, now seen corresponding path program 8 times [2024-02-02 16:12:28,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:12:28,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389356813] [2024-02-02 16:12:28,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:12:28,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:12:28,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:12:28,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:12:28,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:12:28,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389356813] [2024-02-02 16:12:28,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389356813] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:12:28,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:12:28,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 16:12:28,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798783005] [2024-02-02 16:12:28,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:12:28,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 16:12:28,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:12:28,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 16:12:28,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-02-02 16:12:28,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:12:28,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 509 transitions, 11809 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:12:28,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:12:28,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:12:28,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:12:30,810 INFO L124 PetriNetUnfolderBase]: 3065/6445 cut-off events. [2024-02-02 16:12:30,810 INFO L125 PetriNetUnfolderBase]: For 207380/207844 co-relation queries the response was YES. [2024-02-02 16:12:30,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48980 conditions, 6445 events. 3065/6445 cut-off events. For 207380/207844 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 53397 event pairs, 744 based on Foata normal form. 92/6408 useless extension candidates. Maximal degree in co-relation 48859. Up to 3299 conditions per place. [2024-02-02 16:12:30,896 INFO L140 encePairwiseOnDemand]: 60/73 looper letters, 388 selfloop transitions, 137 changer transitions 7/566 dead transitions. [2024-02-02 16:12:30,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 566 transitions, 13480 flow [2024-02-02 16:12:30,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-02 16:12:30,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-02 16:12:30,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 343 transitions. [2024-02-02 16:12:30,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42714819427148193 [2024-02-02 16:12:30,898 INFO L175 Difference]: Start difference. First operand has 437 places, 509 transitions, 11809 flow. Second operand 11 states and 343 transitions. [2024-02-02 16:12:30,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 566 transitions, 13480 flow [2024-02-02 16:12:31,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 566 transitions, 12932 flow, removed 10 selfloop flow, removed 25 redundant places. [2024-02-02 16:12:31,865 INFO L231 Difference]: Finished difference. Result has 421 places, 500 transitions, 11433 flow [2024-02-02 16:12:31,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11191, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11433, PETRI_PLACES=421, PETRI_TRANSITIONS=500} [2024-02-02 16:12:31,881 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 344 predicate places. [2024-02-02 16:12:31,881 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 500 transitions, 11433 flow [2024-02-02 16:12:31,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:12:31,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:12:31,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:12:31,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-02-02 16:12:31,882 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:12:31,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:12:31,882 INFO L85 PathProgramCache]: Analyzing trace with hash -705251146, now seen corresponding path program 6 times [2024-02-02 16:12:31,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:12:31,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533287689] [2024-02-02 16:12:31,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:12:31,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:12:31,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:12:32,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:12:32,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:12:32,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533287689] [2024-02-02 16:12:32,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533287689] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:12:32,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:12:32,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 16:12:32,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965936001] [2024-02-02 16:12:32,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:12:32,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 16:12:32,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:12:32,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 16:12:32,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-02-02 16:12:32,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:12:32,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 500 transitions, 11433 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:12:32,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:12:32,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:12:32,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:12:34,021 INFO L124 PetriNetUnfolderBase]: 3197/6465 cut-off events. [2024-02-02 16:12:34,021 INFO L125 PetriNetUnfolderBase]: For 191426/192427 co-relation queries the response was YES. [2024-02-02 16:12:34,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48883 conditions, 6465 events. 3197/6465 cut-off events. For 191426/192427 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 51986 event pairs, 993 based on Foata normal form. 65/6379 useless extension candidates. Maximal degree in co-relation 48773. Up to 4483 conditions per place. [2024-02-02 16:12:34,096 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 493 selfloop transitions, 65 changer transitions 11/598 dead transitions. [2024-02-02 16:12:34,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 598 transitions, 13639 flow [2024-02-02 16:12:34,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-02 16:12:34,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-02 16:12:34,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 346 transitions. [2024-02-02 16:12:34,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43088418430884184 [2024-02-02 16:12:34,098 INFO L175 Difference]: Start difference. First operand has 421 places, 500 transitions, 11433 flow. Second operand 11 states and 346 transitions. [2024-02-02 16:12:34,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 598 transitions, 13639 flow [2024-02-02 16:12:34,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 598 transitions, 13335 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-02-02 16:12:34,771 INFO L231 Difference]: Finished difference. Result has 420 places, 491 transitions, 11060 flow [2024-02-02 16:12:34,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11133, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11060, PETRI_PLACES=420, PETRI_TRANSITIONS=491} [2024-02-02 16:12:34,771 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 343 predicate places. [2024-02-02 16:12:34,771 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 491 transitions, 11060 flow [2024-02-02 16:12:34,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:12:34,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:12:34,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:12:34,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-02-02 16:12:34,772 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:12:34,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:12:34,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1496067430, now seen corresponding path program 7 times [2024-02-02 16:12:34,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:12:34,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543263884] [2024-02-02 16:12:34,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:12:34,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:12:34,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:12:35,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:12:35,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:12:35,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543263884] [2024-02-02 16:12:35,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543263884] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:12:35,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:12:35,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 16:12:35,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364486371] [2024-02-02 16:12:35,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:12:35,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 16:12:35,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:12:35,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 16:12:35,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-02-02 16:12:35,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:12:35,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 491 transitions, 11060 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:12:35,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:12:35,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:12:35,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:12:36,653 INFO L124 PetriNetUnfolderBase]: 3136/6370 cut-off events. [2024-02-02 16:12:36,653 INFO L125 PetriNetUnfolderBase]: For 179402/180406 co-relation queries the response was YES. [2024-02-02 16:12:36,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48063 conditions, 6370 events. 3136/6370 cut-off events. For 179402/180406 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 51332 event pairs, 828 based on Foata normal form. 80/6314 useless extension candidates. Maximal degree in co-relation 47956. Up to 2639 conditions per place. [2024-02-02 16:12:36,786 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 466 selfloop transitions, 95 changer transitions 10/600 dead transitions. [2024-02-02 16:12:36,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 600 transitions, 13372 flow [2024-02-02 16:12:36,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-02 16:12:36,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-02 16:12:36,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 406 transitions. [2024-02-02 16:12:36,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42781875658587987 [2024-02-02 16:12:36,788 INFO L175 Difference]: Start difference. First operand has 420 places, 491 transitions, 11060 flow. Second operand 13 states and 406 transitions. [2024-02-02 16:12:36,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 600 transitions, 13372 flow [2024-02-02 16:12:37,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 600 transitions, 13178 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-02-02 16:12:37,497 INFO L231 Difference]: Finished difference. Result has 423 places, 483 transitions, 10941 flow [2024-02-02 16:12:37,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10866, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10941, PETRI_PLACES=423, PETRI_TRANSITIONS=483} [2024-02-02 16:12:37,498 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 346 predicate places. [2024-02-02 16:12:37,498 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 483 transitions, 10941 flow [2024-02-02 16:12:37,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:12:37,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:12:37,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:12:37,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-02-02 16:12:37,498 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:12:37,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:12:37,499 INFO L85 PathProgramCache]: Analyzing trace with hash -774949568, now seen corresponding path program 8 times [2024-02-02 16:12:37,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:12:37,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593115844] [2024-02-02 16:12:37,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:12:37,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:12:37,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:12:37,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:12:37,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:12:37,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593115844] [2024-02-02 16:12:37,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593115844] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:12:37,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:12:37,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 16:12:37,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277207982] [2024-02-02 16:12:37,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:12:37,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 16:12:37,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:12:37,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 16:12:37,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-02-02 16:12:37,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:12:37,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 483 transitions, 10941 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:12:37,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:12:37,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:12:37,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:12:39,340 INFO L124 PetriNetUnfolderBase]: 3093/6274 cut-off events. [2024-02-02 16:12:39,340 INFO L125 PetriNetUnfolderBase]: For 173749/174734 co-relation queries the response was YES. [2024-02-02 16:12:39,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47319 conditions, 6274 events. 3093/6274 cut-off events. For 173749/174734 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 50393 event pairs, 994 based on Foata normal form. 65/6196 useless extension candidates. Maximal degree in co-relation 47211. Up to 4438 conditions per place. [2024-02-02 16:12:39,415 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 457 selfloop transitions, 65 changer transitions 20/571 dead transitions. [2024-02-02 16:12:39,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 571 transitions, 12921 flow [2024-02-02 16:12:39,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-02 16:12:39,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-02 16:12:39,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 344 transitions. [2024-02-02 16:12:39,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42839352428393523 [2024-02-02 16:12:39,416 INFO L175 Difference]: Start difference. First operand has 423 places, 483 transitions, 10941 flow. Second operand 11 states and 344 transitions. [2024-02-02 16:12:39,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 571 transitions, 12921 flow [2024-02-02 16:12:39,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 571 transitions, 12734 flow, removed 0 selfloop flow, removed 13 redundant places. [2024-02-02 16:12:40,007 INFO L231 Difference]: Finished difference. Result has 421 places, 466 transitions, 10553 flow [2024-02-02 16:12:40,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10754, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10553, PETRI_PLACES=421, PETRI_TRANSITIONS=466} [2024-02-02 16:12:40,008 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 344 predicate places. [2024-02-02 16:12:40,008 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 466 transitions, 10553 flow [2024-02-02 16:12:40,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:12:40,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:12:40,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:12:40,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-02-02 16:12:40,009 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:12:40,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:12:40,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1988617872, now seen corresponding path program 9 times [2024-02-02 16:12:40,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:12:40,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244925696] [2024-02-02 16:12:40,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:12:40,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:12:40,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:12:40,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:12:40,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:12:40,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244925696] [2024-02-02 16:12:40,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244925696] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:12:40,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:12:40,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 16:12:40,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231312184] [2024-02-02 16:12:40,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:12:40,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 16:12:40,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:12:40,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 16:12:40,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-02-02 16:12:40,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:12:40,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 466 transitions, 10553 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:12:40,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:12:40,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:12:40,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:12:42,167 INFO L124 PetriNetUnfolderBase]: 3042/6169 cut-off events. [2024-02-02 16:12:42,168 INFO L125 PetriNetUnfolderBase]: For 166266/167235 co-relation queries the response was YES. [2024-02-02 16:12:42,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46534 conditions, 6169 events. 3042/6169 cut-off events. For 166266/167235 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 49201 event pairs, 809 based on Foata normal form. 70/6103 useless extension candidates. Maximal degree in co-relation 46425. Up to 2643 conditions per place. [2024-02-02 16:12:42,310 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 396 selfloop transitions, 122 changer transitions 8/555 dead transitions. [2024-02-02 16:12:42,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 555 transitions, 12510 flow [2024-02-02 16:12:42,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-02 16:12:42,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-02 16:12:42,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 369 transitions. [2024-02-02 16:12:42,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212328767123288 [2024-02-02 16:12:42,312 INFO L175 Difference]: Start difference. First operand has 421 places, 466 transitions, 10553 flow. Second operand 12 states and 369 transitions. [2024-02-02 16:12:42,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 555 transitions, 12510 flow [2024-02-02 16:12:42,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 555 transitions, 12378 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-02-02 16:12:42,980 INFO L231 Difference]: Finished difference. Result has 423 places, 459 transitions, 10552 flow [2024-02-02 16:12:42,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10421, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10552, PETRI_PLACES=423, PETRI_TRANSITIONS=459} [2024-02-02 16:12:42,981 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 346 predicate places. [2024-02-02 16:12:42,981 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 459 transitions, 10552 flow [2024-02-02 16:12:42,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:12:42,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:12:42,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:12:42,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-02-02 16:12:42,982 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:12:42,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:12:42,982 INFO L85 PathProgramCache]: Analyzing trace with hash -966709928, now seen corresponding path program 10 times [2024-02-02 16:12:42,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:12:42,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880227525] [2024-02-02 16:12:42,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:12:42,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:12:42,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:12:43,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:12:43,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:12:43,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880227525] [2024-02-02 16:12:43,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880227525] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:12:43,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:12:43,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 16:12:43,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465664712] [2024-02-02 16:12:43,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:12:43,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 16:12:43,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:12:43,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 16:12:43,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-02-02 16:12:43,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:12:43,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 459 transitions, 10552 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:12:43,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:12:43,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:12:43,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:12:44,864 INFO L124 PetriNetUnfolderBase]: 3016/6109 cut-off events. [2024-02-02 16:12:44,864 INFO L125 PetriNetUnfolderBase]: For 169398/170364 co-relation queries the response was YES. [2024-02-02 16:12:44,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46312 conditions, 6109 events. 3016/6109 cut-off events. For 169398/170364 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 48656 event pairs, 970 based on Foata normal form. 56/6022 useless extension candidates. Maximal degree in co-relation 46202. Up to 4393 conditions per place. [2024-02-02 16:12:44,939 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 447 selfloop transitions, 49 changer transitions 26/551 dead transitions. [2024-02-02 16:12:44,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 551 transitions, 12482 flow [2024-02-02 16:12:44,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-02 16:12:44,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-02 16:12:44,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 367 transitions. [2024-02-02 16:12:44,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189497716894977 [2024-02-02 16:12:44,941 INFO L175 Difference]: Start difference. First operand has 423 places, 459 transitions, 10552 flow. Second operand 12 states and 367 transitions. [2024-02-02 16:12:44,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 551 transitions, 12482 flow [2024-02-02 16:12:45,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 551 transitions, 12275 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-02-02 16:12:45,580 INFO L231 Difference]: Finished difference. Result has 423 places, 437 transitions, 10022 flow [2024-02-02 16:12:45,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10345, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10022, PETRI_PLACES=423, PETRI_TRANSITIONS=437} [2024-02-02 16:12:45,581 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 346 predicate places. [2024-02-02 16:12:45,581 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 437 transitions, 10022 flow [2024-02-02 16:12:45,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:12:45,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:12:45,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:12:45,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-02-02 16:12:45,582 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:12:45,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:12:45,582 INFO L85 PathProgramCache]: Analyzing trace with hash -2059524480, now seen corresponding path program 11 times [2024-02-02 16:12:45,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:12:45,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912162246] [2024-02-02 16:12:45,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:12:45,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:12:45,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:12:45,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:12:45,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:12:45,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912162246] [2024-02-02 16:12:45,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912162246] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:12:45,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:12:45,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 16:12:45,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586787166] [2024-02-02 16:12:45,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:12:45,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 16:12:45,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:12:45,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 16:12:45,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-02-02 16:12:45,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:12:45,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 437 transitions, 10022 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:12:45,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:12:45,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:12:45,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:12:47,302 INFO L124 PetriNetUnfolderBase]: 2924/5954 cut-off events. [2024-02-02 16:12:47,302 INFO L125 PetriNetUnfolderBase]: For 158686/159650 co-relation queries the response was YES. [2024-02-02 16:12:47,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45083 conditions, 5954 events. 2924/5954 cut-off events. For 158686/159650 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 47118 event pairs, 841 based on Foata normal form. 89/5925 useless extension candidates. Maximal degree in co-relation 44972. Up to 1958 conditions per place. [2024-02-02 16:12:47,381 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 349 selfloop transitions, 108 changer transitions 13/497 dead transitions. [2024-02-02 16:12:47,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 497 transitions, 11620 flow [2024-02-02 16:12:47,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-02 16:12:47,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-02 16:12:47,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 292 transitions. [2024-02-02 16:12:47,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-02-02 16:12:47,383 INFO L175 Difference]: Start difference. First operand has 423 places, 437 transitions, 10022 flow. Second operand 9 states and 292 transitions. [2024-02-02 16:12:47,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 497 transitions, 11620 flow [2024-02-02 16:12:47,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 497 transitions, 11519 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-02-02 16:12:47,996 INFO L231 Difference]: Finished difference. Result has 421 places, 425 transitions, 9932 flow [2024-02-02 16:12:47,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9921, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9932, PETRI_PLACES=421, PETRI_TRANSITIONS=425} [2024-02-02 16:12:47,996 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 344 predicate places. [2024-02-02 16:12:47,997 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 425 transitions, 9932 flow [2024-02-02 16:12:47,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:12:47,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:12:47,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:12:47,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-02-02 16:12:47,997 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:12:47,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:12:47,998 INFO L85 PathProgramCache]: Analyzing trace with hash -255855452, now seen corresponding path program 12 times [2024-02-02 16:12:47,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:12:47,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069839581] [2024-02-02 16:12:47,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:12:47,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:12:48,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:12:48,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:12:48,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:12:48,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069839581] [2024-02-02 16:12:48,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069839581] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:12:48,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:12:48,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 16:12:48,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697616934] [2024-02-02 16:12:48,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:12:48,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 16:12:48,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:12:48,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 16:12:48,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-02-02 16:12:48,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:12:48,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 425 transitions, 9932 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:12:48,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:12:48,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:12:48,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:12:49,720 INFO L124 PetriNetUnfolderBase]: 2847/5823 cut-off events. [2024-02-02 16:12:49,721 INFO L125 PetriNetUnfolderBase]: For 160921/161860 co-relation queries the response was YES. [2024-02-02 16:12:49,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44280 conditions, 5823 events. 2847/5823 cut-off events. For 160921/161860 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 46014 event pairs, 830 based on Foata normal form. 74/5788 useless extension candidates. Maximal degree in co-relation 44168. Up to 1958 conditions per place. [2024-02-02 16:12:49,794 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 347 selfloop transitions, 92 changer transitions 20/485 dead transitions. [2024-02-02 16:12:49,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 485 transitions, 11440 flow [2024-02-02 16:12:49,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-02 16:12:49,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-02 16:12:49,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 316 transitions. [2024-02-02 16:12:49,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4328767123287671 [2024-02-02 16:12:49,796 INFO L175 Difference]: Start difference. First operand has 421 places, 425 transitions, 9932 flow. Second operand 10 states and 316 transitions. [2024-02-02 16:12:49,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 485 transitions, 11440 flow [2024-02-02 16:12:50,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 485 transitions, 11031 flow, removed 16 selfloop flow, removed 13 redundant places. [2024-02-02 16:12:50,456 INFO L231 Difference]: Finished difference. Result has 418 places, 406 transitions, 9423 flow [2024-02-02 16:12:50,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9539, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9423, PETRI_PLACES=418, PETRI_TRANSITIONS=406} [2024-02-02 16:12:50,457 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 341 predicate places. [2024-02-02 16:12:50,457 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 406 transitions, 9423 flow [2024-02-02 16:12:50,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:12:50,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:12:50,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:12:50,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-02-02 16:12:50,457 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:12:50,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:12:50,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1783134488, now seen corresponding path program 13 times [2024-02-02 16:12:50,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:12:50,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515752810] [2024-02-02 16:12:50,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:12:50,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:12:50,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:12:50,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:12:50,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:12:50,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515752810] [2024-02-02 16:12:50,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515752810] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:12:50,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:12:50,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 16:12:50,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200278396] [2024-02-02 16:12:50,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:12:50,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 16:12:50,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:12:50,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 16:12:50,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-02-02 16:12:50,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:12:50,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 406 transitions, 9423 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:12:50,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:12:50,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:12:50,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:12:52,132 INFO L124 PetriNetUnfolderBase]: 2755/5652 cut-off events. [2024-02-02 16:12:52,132 INFO L125 PetriNetUnfolderBase]: For 141926/142832 co-relation queries the response was YES. [2024-02-02 16:12:52,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42320 conditions, 5652 events. 2755/5652 cut-off events. For 141926/142832 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 44429 event pairs, 810 based on Foata normal form. 57/5593 useless extension candidates. Maximal degree in co-relation 42212. Up to 1958 conditions per place. [2024-02-02 16:12:52,205 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 301 selfloop transitions, 104 changer transitions 23/454 dead transitions. [2024-02-02 16:12:52,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 454 transitions, 10652 flow [2024-02-02 16:12:52,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-02 16:12:52,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-02 16:12:52,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 287 transitions. [2024-02-02 16:12:52,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4368340943683409 [2024-02-02 16:12:52,207 INFO L175 Difference]: Start difference. First operand has 418 places, 406 transitions, 9423 flow. Second operand 9 states and 287 transitions. [2024-02-02 16:12:52,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 454 transitions, 10652 flow [2024-02-02 16:12:52,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 454 transitions, 10093 flow, removed 13 selfloop flow, removed 20 redundant places. [2024-02-02 16:12:52,706 INFO L231 Difference]: Finished difference. Result has 407 places, 383 transitions, 8723 flow [2024-02-02 16:12:52,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8872, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8723, PETRI_PLACES=407, PETRI_TRANSITIONS=383} [2024-02-02 16:12:52,707 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 330 predicate places. [2024-02-02 16:12:52,707 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 383 transitions, 8723 flow [2024-02-02 16:12:52,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:12:52,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:12:52,707 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] [2024-02-02 16:12:52,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-02-02 16:12:52,707 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:12:52,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:12:52,708 INFO L85 PathProgramCache]: Analyzing trace with hash -459069398, now seen corresponding path program 14 times [2024-02-02 16:12:52,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:12:52,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664513137] [2024-02-02 16:12:52,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:12:52,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:12:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:12:52,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:12:52,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:12:52,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664513137] [2024-02-02 16:12:52,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664513137] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:12:52,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:12:52,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 16:12:52,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356488576] [2024-02-02 16:12:52,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:12:52,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 16:12:52,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:12:52,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 16:12:52,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-02-02 16:12:53,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:12:53,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 383 transitions, 8723 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:12:53,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:12:53,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:12:53,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:12:54,291 INFO L124 PetriNetUnfolderBase]: 2726/5629 cut-off events. [2024-02-02 16:12:54,292 INFO L125 PetriNetUnfolderBase]: For 121077/121974 co-relation queries the response was YES. [2024-02-02 16:12:54,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41402 conditions, 5629 events. 2726/5629 cut-off events. For 121077/121974 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 44579 event pairs, 642 based on Foata normal form. 64/5575 useless extension candidates. Maximal degree in co-relation 41299. Up to 2756 conditions per place. [2024-02-02 16:12:54,349 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 323 selfloop transitions, 100 changer transitions 6/455 dead transitions. [2024-02-02 16:12:54,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 455 transitions, 10298 flow [2024-02-02 16:12:54,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-02 16:12:54,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-02 16:12:54,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 324 transitions. [2024-02-02 16:12:54,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4438356164383562 [2024-02-02 16:12:54,351 INFO L175 Difference]: Start difference. First operand has 407 places, 383 transitions, 8723 flow. Second operand 10 states and 324 transitions. [2024-02-02 16:12:54,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 455 transitions, 10298 flow [2024-02-02 16:12:54,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 455 transitions, 9802 flow, removed 16 selfloop flow, removed 21 redundant places. [2024-02-02 16:12:54,740 INFO L231 Difference]: Finished difference. Result has 396 places, 379 transitions, 8388 flow [2024-02-02 16:12:54,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8245, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8388, PETRI_PLACES=396, PETRI_TRANSITIONS=379} [2024-02-02 16:12:54,741 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 319 predicate places. [2024-02-02 16:12:54,741 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 379 transitions, 8388 flow [2024-02-02 16:12:54,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:12:54,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:12:54,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:12:54,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-02-02 16:12:54,742 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:12:54,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:12:54,742 INFO L85 PathProgramCache]: Analyzing trace with hash 517959024, now seen corresponding path program 15 times [2024-02-02 16:12:54,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:12:54,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557481761] [2024-02-02 16:12:54,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:12:54,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:12:54,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:12:55,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:12:55,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:12:55,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557481761] [2024-02-02 16:12:55,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557481761] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:12:55,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:12:55,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 16:12:55,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440671198] [2024-02-02 16:12:55,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:12:55,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 16:12:55,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:12:55,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 16:12:55,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-02-02 16:12:55,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:12:55,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 379 transitions, 8388 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:12:55,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:12:55,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:12:55,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:12:56,262 INFO L124 PetriNetUnfolderBase]: 2684/5570 cut-off events. [2024-02-02 16:12:56,262 INFO L125 PetriNetUnfolderBase]: For 108607/109428 co-relation queries the response was YES. [2024-02-02 16:12:56,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40284 conditions, 5570 events. 2684/5570 cut-off events. For 108607/109428 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 44032 event pairs, 549 based on Foata normal form. 64/5519 useless extension candidates. Maximal degree in co-relation 40185. Up to 2402 conditions per place. [2024-02-02 16:12:56,323 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 282 selfloop transitions, 126 changer transitions 6/440 dead transitions. [2024-02-02 16:12:56,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 440 transitions, 9733 flow [2024-02-02 16:12:56,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-02 16:12:56,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-02 16:12:56,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 346 transitions. [2024-02-02 16:12:56,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43088418430884184 [2024-02-02 16:12:56,324 INFO L175 Difference]: Start difference. First operand has 396 places, 379 transitions, 8388 flow. Second operand 11 states and 346 transitions. [2024-02-02 16:12:56,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 440 transitions, 9733 flow [2024-02-02 16:12:56,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 440 transitions, 9515 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-02-02 16:12:56,693 INFO L231 Difference]: Finished difference. Result has 399 places, 375 transitions, 8411 flow [2024-02-02 16:12:56,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8170, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8411, PETRI_PLACES=399, PETRI_TRANSITIONS=375} [2024-02-02 16:12:56,693 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 322 predicate places. [2024-02-02 16:12:56,693 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 375 transitions, 8411 flow [2024-02-02 16:12:56,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:12:56,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:12:56,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:12:56,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-02-02 16:12:56,694 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:12:56,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:12:56,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1725096586, now seen corresponding path program 16 times [2024-02-02 16:12:56,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:12:56,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515838819] [2024-02-02 16:12:56,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:12:56,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:12:56,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:12:56,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:12:56,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:12:56,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515838819] [2024-02-02 16:12:56,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515838819] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:12:56,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:12:56,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 16:12:56,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954024471] [2024-02-02 16:12:56,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:12:56,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 16:12:56,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:12:56,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 16:12:56,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-02-02 16:12:57,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:12:57,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 375 transitions, 8411 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:12:57,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:12:57,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:12:57,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:12:58,251 INFO L124 PetriNetUnfolderBase]: 2656/5535 cut-off events. [2024-02-02 16:12:58,252 INFO L125 PetriNetUnfolderBase]: For 107327/108155 co-relation queries the response was YES. [2024-02-02 16:12:58,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41017 conditions, 5535 events. 2656/5535 cut-off events. For 107327/108155 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 43851 event pairs, 621 based on Foata normal form. 62/5477 useless extension candidates. Maximal degree in co-relation 40917. Up to 2786 conditions per place. [2024-02-02 16:12:58,318 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 324 selfloop transitions, 97 changer transitions 9/456 dead transitions. [2024-02-02 16:12:58,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 456 transitions, 10053 flow [2024-02-02 16:12:58,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-02 16:12:58,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-02 16:12:58,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 382 transitions. [2024-02-02 16:12:58,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4360730593607306 [2024-02-02 16:12:58,319 INFO L175 Difference]: Start difference. First operand has 399 places, 375 transitions, 8411 flow. Second operand 12 states and 382 transitions. [2024-02-02 16:12:58,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 456 transitions, 10053 flow [2024-02-02 16:12:58,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 456 transitions, 9637 flow, removed 13 selfloop flow, removed 13 redundant places. [2024-02-02 16:12:58,806 INFO L231 Difference]: Finished difference. Result has 398 places, 368 transitions, 8118 flow [2024-02-02 16:12:58,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8014, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8118, PETRI_PLACES=398, PETRI_TRANSITIONS=368} [2024-02-02 16:12:58,806 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 321 predicate places. [2024-02-02 16:12:58,806 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 368 transitions, 8118 flow [2024-02-02 16:12:58,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:12:58,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:12:58,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:12:58,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-02-02 16:12:58,807 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:12:58,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:12:58,807 INFO L85 PathProgramCache]: Analyzing trace with hash -529612934, now seen corresponding path program 17 times [2024-02-02 16:12:58,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:12:58,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351324628] [2024-02-02 16:12:58,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:12:58,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:12:58,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:12:59,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:12:59,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:12:59,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351324628] [2024-02-02 16:12:59,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351324628] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:12:59,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:12:59,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 16:12:59,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501327375] [2024-02-02 16:12:59,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:12:59,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 16:12:59,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:12:59,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 16:12:59,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-02-02 16:12:59,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:12:59,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 368 transitions, 8118 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:12:59,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:12:59,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:12:59,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:13:00,378 INFO L124 PetriNetUnfolderBase]: 2640/5518 cut-off events. [2024-02-02 16:13:00,378 INFO L125 PetriNetUnfolderBase]: For 97248/98024 co-relation queries the response was YES. [2024-02-02 16:13:00,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40483 conditions, 5518 events. 2640/5518 cut-off events. For 97248/98024 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 43679 event pairs, 544 based on Foata normal form. 58/5459 useless extension candidates. Maximal degree in co-relation 40385. Up to 2402 conditions per place. [2024-02-02 16:13:00,446 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 281 selfloop transitions, 121 changer transitions 10/438 dead transitions. [2024-02-02 16:13:00,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 438 transitions, 9527 flow [2024-02-02 16:13:00,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-02 16:13:00,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-02 16:13:00,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 404 transitions. [2024-02-02 16:13:00,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42571127502634354 [2024-02-02 16:13:00,447 INFO L175 Difference]: Start difference. First operand has 398 places, 368 transitions, 8118 flow. Second operand 13 states and 404 transitions. [2024-02-02 16:13:00,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 438 transitions, 9527 flow [2024-02-02 16:13:00,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 438 transitions, 9307 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-02-02 16:13:00,812 INFO L231 Difference]: Finished difference. Result has 398 places, 359 transitions, 8037 flow [2024-02-02 16:13:00,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7900, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8037, PETRI_PLACES=398, PETRI_TRANSITIONS=359} [2024-02-02 16:13:00,813 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 321 predicate places. [2024-02-02 16:13:00,813 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 359 transitions, 8037 flow [2024-02-02 16:13:00,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:13:00,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:13:00,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:13:00,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-02-02 16:13:00,814 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:13:00,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:13:00,814 INFO L85 PathProgramCache]: Analyzing trace with hash 379738064, now seen corresponding path program 18 times [2024-02-02 16:13:00,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:13:00,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126169581] [2024-02-02 16:13:00,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:13:00,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:13:00,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:13:01,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:13:01,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:13:01,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126169581] [2024-02-02 16:13:01,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126169581] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:13:01,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:13:01,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 16:13:01,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23374890] [2024-02-02 16:13:01,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:13:01,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 16:13:01,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:13:01,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 16:13:01,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-02-02 16:13:01,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:13:01,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 359 transitions, 8037 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:13:01,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:13:01,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:13:01,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:13:02,359 INFO L124 PetriNetUnfolderBase]: 2614/5461 cut-off events. [2024-02-02 16:13:02,359 INFO L125 PetriNetUnfolderBase]: For 92630/93434 co-relation queries the response was YES. [2024-02-02 16:13:02,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40475 conditions, 5461 events. 2614/5461 cut-off events. For 92630/93434 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 43109 event pairs, 633 based on Foata normal form. 48/5389 useless extension candidates. Maximal degree in co-relation 40377. Up to 2548 conditions per place. [2024-02-02 16:13:02,421 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 248 selfloop transitions, 138 changer transitions 11/423 dead transitions. [2024-02-02 16:13:02,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 423 transitions, 9374 flow [2024-02-02 16:13:02,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-02 16:13:02,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-02 16:13:02,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 344 transitions. [2024-02-02 16:13:02,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42839352428393523 [2024-02-02 16:13:02,422 INFO L175 Difference]: Start difference. First operand has 398 places, 359 transitions, 8037 flow. Second operand 11 states and 344 transitions. [2024-02-02 16:13:02,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 423 transitions, 9374 flow [2024-02-02 16:13:02,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 423 transitions, 8941 flow, removed 8 selfloop flow, removed 22 redundant places. [2024-02-02 16:13:02,782 INFO L231 Difference]: Finished difference. Result has 387 places, 349 transitions, 7738 flow [2024-02-02 16:13:02,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7614, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7738, PETRI_PLACES=387, PETRI_TRANSITIONS=349} [2024-02-02 16:13:02,783 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 310 predicate places. [2024-02-02 16:13:02,783 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 349 transitions, 7738 flow [2024-02-02 16:13:02,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:13:02,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:13:02,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:13:02,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-02-02 16:13:02,784 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:13:02,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:13:02,784 INFO L85 PathProgramCache]: Analyzing trace with hash -364860486, now seen corresponding path program 19 times [2024-02-02 16:13:02,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:13:02,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952296733] [2024-02-02 16:13:02,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:13:02,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:13:02,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:13:03,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:13:03,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:13:03,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952296733] [2024-02-02 16:13:03,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952296733] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:13:03,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:13:03,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 16:13:03,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632256169] [2024-02-02 16:13:03,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:13:03,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 16:13:03,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:13:03,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 16:13:03,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-02-02 16:13:03,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:13:03,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 349 transitions, 7738 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:13:03,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:13:03,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:13:03,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:13:04,226 INFO L124 PetriNetUnfolderBase]: 2608/5506 cut-off events. [2024-02-02 16:13:04,226 INFO L125 PetriNetUnfolderBase]: For 90760/91510 co-relation queries the response was YES. [2024-02-02 16:13:04,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40495 conditions, 5506 events. 2608/5506 cut-off events. For 90760/91510 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 43695 event pairs, 549 based on Foata normal form. 54/5449 useless extension candidates. Maximal degree in co-relation 40401. Up to 2352 conditions per place. [2024-02-02 16:13:04,284 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 220 selfloop transitions, 155 changer transitions 10/411 dead transitions. [2024-02-02 16:13:04,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 411 transitions, 9000 flow [2024-02-02 16:13:04,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-02 16:13:04,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-02 16:13:04,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 374 transitions. [2024-02-02 16:13:04,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4269406392694064 [2024-02-02 16:13:04,285 INFO L175 Difference]: Start difference. First operand has 387 places, 349 transitions, 7738 flow. Second operand 12 states and 374 transitions. [2024-02-02 16:13:04,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 411 transitions, 9000 flow [2024-02-02 16:13:04,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 411 transitions, 8706 flow, removed 2 selfloop flow, removed 16 redundant places. [2024-02-02 16:13:04,629 INFO L231 Difference]: Finished difference. Result has 383 places, 340 transitions, 7616 flow [2024-02-02 16:13:04,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7446, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7616, PETRI_PLACES=383, PETRI_TRANSITIONS=340} [2024-02-02 16:13:04,630 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 306 predicate places. [2024-02-02 16:13:04,630 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 340 transitions, 7616 flow [2024-02-02 16:13:04,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:13:04,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:13:04,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:13:04,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-02-02 16:13:04,630 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:13:04,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:13:04,631 INFO L85 PathProgramCache]: Analyzing trace with hash -502223712, now seen corresponding path program 20 times [2024-02-02 16:13:04,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:13:04,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117785834] [2024-02-02 16:13:04,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:13:04,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:13:04,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 16:13:04,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 16:13:04,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 16:13:04,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117785834] [2024-02-02 16:13:04,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117785834] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 16:13:04,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 16:13:04,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-02 16:13:04,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157930685] [2024-02-02 16:13:04,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 16:13:04,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-02 16:13:04,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 16:13:04,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-02 16:13:04,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-02-02 16:13:04,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-02 16:13:04,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 340 transitions, 7616 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:13:04,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 16:13:04,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-02 16:13:04,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 16:13:06,090 INFO L124 PetriNetUnfolderBase]: 2587/5426 cut-off events. [2024-02-02 16:13:06,090 INFO L125 PetriNetUnfolderBase]: For 85885/86641 co-relation queries the response was YES. [2024-02-02 16:13:06,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40400 conditions, 5426 events. 2587/5426 cut-off events. For 85885/86641 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 42703 event pairs, 470 based on Foata normal form. 40/5349 useless extension candidates. Maximal degree in co-relation 40306. Up to 2264 conditions per place. [2024-02-02 16:13:06,155 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 198 selfloop transitions, 153 changer transitions 17/393 dead transitions. [2024-02-02 16:13:06,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 393 transitions, 8693 flow [2024-02-02 16:13:06,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-02 16:13:06,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-02 16:13:06,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 364 transitions. [2024-02-02 16:13:06,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4155251141552511 [2024-02-02 16:13:06,157 INFO L175 Difference]: Start difference. First operand has 383 places, 340 transitions, 7616 flow. Second operand 12 states and 364 transitions. [2024-02-02 16:13:06,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 393 transitions, 8693 flow [2024-02-02 16:13:06,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 393 transitions, 8208 flow, removed 9 selfloop flow, removed 28 redundant places. [2024-02-02 16:13:06,479 INFO L231 Difference]: Finished difference. Result has 364 places, 322 transitions, 7191 flow [2024-02-02 16:13:06,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7069, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7191, PETRI_PLACES=364, PETRI_TRANSITIONS=322} [2024-02-02 16:13:06,479 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 287 predicate places. [2024-02-02 16:13:06,480 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 322 transitions, 7191 flow [2024-02-02 16:13:06,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 16:13:06,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 16:13:06,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:13:06,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-02-02 16:13:06,480 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-02 16:13:06,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 16:13:06,481 INFO L85 PathProgramCache]: Analyzing trace with hash -773978686, now seen corresponding path program 1 times [2024-02-02 16:13:06,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 16:13:06,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99815590] [2024-02-02 16:13:06,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 16:13:06,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 16:13:06,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-02 16:13:06,491 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-02 16:13:06,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-02 16:13:06,521 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-02 16:13:06,521 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-02 16:13:06,522 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (59 of 60 remaining) [2024-02-02 16:13:06,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (58 of 60 remaining) [2024-02-02 16:13:06,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (57 of 60 remaining) [2024-02-02 16:13:06,523 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (56 of 60 remaining) [2024-02-02 16:13:06,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (55 of 60 remaining) [2024-02-02 16:13:06,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT (54 of 60 remaining) [2024-02-02 16:13:06,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err5ASSERT_VIOLATIONWITNESS_INVARIANT (53 of 60 remaining) [2024-02-02 16:13:06,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err6ASSERT_VIOLATIONWITNESS_INVARIANT (52 of 60 remaining) [2024-02-02 16:13:06,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT (51 of 60 remaining) [2024-02-02 16:13:06,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err8ASSERT_VIOLATIONWITNESS_INVARIANT (50 of 60 remaining) [2024-02-02 16:13:06,524 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 60 remaining) [2024-02-02 16:13:06,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err10ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 60 remaining) [2024-02-02 16:13:06,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err11ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 60 remaining) [2024-02-02 16:13:06,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 60 remaining) [2024-02-02 16:13:06,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 60 remaining) [2024-02-02 16:13:06,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 60 remaining) [2024-02-02 16:13:06,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 60 remaining) [2024-02-02 16:13:06,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 60 remaining) [2024-02-02 16:13:06,525 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 60 remaining) [2024-02-02 16:13:06,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 60 remaining) [2024-02-02 16:13:06,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 60 remaining) [2024-02-02 16:13:06,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 60 remaining) [2024-02-02 16:13:06,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 60 remaining) [2024-02-02 16:13:06,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 60 remaining) [2024-02-02 16:13:06,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 60 remaining) [2024-02-02 16:13:06,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 60 remaining) [2024-02-02 16:13:06,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 60 remaining) [2024-02-02 16:13:06,526 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 60 remaining) [2024-02-02 16:13:06,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 60 remaining) [2024-02-02 16:13:06,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 60 remaining) [2024-02-02 16:13:06,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 60 remaining) [2024-02-02 16:13:06,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 60 remaining) [2024-02-02 16:13:06,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 60 remaining) [2024-02-02 16:13:06,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (26 of 60 remaining) [2024-02-02 16:13:06,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 60 remaining) [2024-02-02 16:13:06,527 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 60 remaining) [2024-02-02 16:13:06,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 60 remaining) [2024-02-02 16:13:06,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 60 remaining) [2024-02-02 16:13:06,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 60 remaining) [2024-02-02 16:13:06,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 60 remaining) [2024-02-02 16:13:06,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 60 remaining) [2024-02-02 16:13:06,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err5ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 60 remaining) [2024-02-02 16:13:06,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err6ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 60 remaining) [2024-02-02 16:13:06,528 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 60 remaining) [2024-02-02 16:13:06,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err8ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 60 remaining) [2024-02-02 16:13:06,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 60 remaining) [2024-02-02 16:13:06,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err10ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 60 remaining) [2024-02-02 16:13:06,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err11ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 60 remaining) [2024-02-02 16:13:06,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 60 remaining) [2024-02-02 16:13:06,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 60 remaining) [2024-02-02 16:13:06,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 60 remaining) [2024-02-02 16:13:06,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 60 remaining) [2024-02-02 16:13:06,529 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 60 remaining) [2024-02-02 16:13:06,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 60 remaining) [2024-02-02 16:13:06,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 60 remaining) [2024-02-02 16:13:06,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 60 remaining) [2024-02-02 16:13:06,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 60 remaining) [2024-02-02 16:13:06,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 60 remaining) [2024-02-02 16:13:06,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 60 remaining) [2024-02-02 16:13:06,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 60 remaining) [2024-02-02 16:13:06,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-02-02 16:13:06,531 INFO L445 BasicCegarLoop]: Path program histogram: [20, 20, 10, 10, 10, 9, 8, 7, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 16:13:06,536 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-02 16:13:06,536 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-02 16:13:06,571 INFO L503 ceAbstractionStarter]: Automizer considered 33 witness invariants [2024-02-02 16:13:06,588 INFO L504 ceAbstractionStarter]: WitnessConsidered=33 [2024-02-02 16:13:06,589 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.02 04:13:06 BasicIcfg [2024-02-02 16:13:06,589 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-02 16:13:06,589 INFO L158 Benchmark]: Toolchain (without parser) took 260442.78ms. Allocated memory was 226.5MB in the beginning and 3.6GB in the end (delta: 3.4GB). Free memory was 141.4MB in the beginning and 2.0GB in the end (delta: -1.9GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2024-02-02 16:13:06,589 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 125.8MB. Free memory was 90.1MB in the beginning and 90.1MB in the end (delta: 82.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-02-02 16:13:06,589 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 226.5MB. Free memory is still 187.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-02 16:13:06,590 INFO L158 Benchmark]: CACSL2BoogieTranslator took 804.36ms. Allocated memory is still 226.5MB. Free memory was 141.2MB in the beginning and 154.1MB in the end (delta: -12.8MB). Peak memory consumption was 33.7MB. Max. memory is 16.1GB. [2024-02-02 16:13:06,590 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.67ms. Allocated memory is still 226.5MB. Free memory was 154.1MB in the beginning and 152.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-02 16:13:06,590 INFO L158 Benchmark]: Boogie Preprocessor took 72.90ms. Allocated memory is still 226.5MB. Free memory was 152.0MB in the beginning and 149.3MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-02 16:13:06,590 INFO L158 Benchmark]: RCFGBuilder took 658.56ms. Allocated memory is still 226.5MB. Free memory was 149.3MB in the beginning and 168.1MB in the end (delta: -18.9MB). Peak memory consumption was 64.0MB. Max. memory is 16.1GB. [2024-02-02 16:13:06,590 INFO L158 Benchmark]: TraceAbstraction took 258840.91ms. Allocated memory was 226.5MB in the beginning and 3.6GB in the end (delta: 3.4GB). Free memory was 168.1MB in the beginning and 2.0GB in the end (delta: -1.8GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2024-02-02 16:13:06,591 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.15ms. Allocated memory is still 125.8MB. Free memory was 90.1MB in the beginning and 90.1MB in the end (delta: 82.9kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.16ms. Allocated memory is still 226.5MB. Free memory is still 187.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 804.36ms. Allocated memory is still 226.5MB. Free memory was 141.2MB in the beginning and 154.1MB in the end (delta: -12.8MB). Peak memory consumption was 33.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.67ms. Allocated memory is still 226.5MB. Free memory was 154.1MB in the beginning and 152.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.90ms. Allocated memory is still 226.5MB. Free memory was 152.0MB in the beginning and 149.3MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 658.56ms. Allocated memory is still 226.5MB. Free memory was 149.3MB in the beginning and 168.1MB in the end (delta: -18.9MB). Peak memory consumption was 64.0MB. Max. memory is 16.1GB. * TraceAbstraction took 258840.91ms. Allocated memory was 226.5MB in the beginning and 3.6GB in the end (delta: 3.4GB). Free memory was 168.1MB in the beginning and 2.0GB in the end (delta: -1.8GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 771]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L708] 0 int __unbuffered_cnt = 0; [L710] 0 int __unbuffered_p0_EAX = 0; [L712] 0 int __unbuffered_p1_EAX = 0; [L713] 0 _Bool main$tmp_guard0; [L714] 0 _Bool main$tmp_guard1; [L716] 0 int x = 0; [L718] 0 int y = 0; [L760] 0 pthread_t t1925; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, t1925={5:0}, x=0, y=0] [L761] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_cnt],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]]]]] [L761] FCALL, FORK 0 pthread_create(&t1925, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t1925={5:0}, x=0, y=0] [L762] 0 pthread_t t1926; [L763] FCALL, FORK 0 pthread_create(&t1926, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t1925={5:0}, t1926={3:0}, x=0, y=0] [L721] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0] [L722] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] [L722] 1 __unbuffered_p0_EAX = y [L723] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0] [L724] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0] [L725] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] [L725] 1 x = 1 [L726] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=0] [L727] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=0] [L728] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=0] [L736] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=0] [L729] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=0] [L737] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] [L737] 2 __unbuffered_p1_EAX = x [L738] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=0] [L739] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=0] [L740] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] [L740] 2 y = 1 [L741] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L742] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L743] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L744] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L730] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] [L730] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L731] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[__unbuffered_cnt]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=1, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L745] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] [L745] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L746] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[__unbuffered_cnt]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L765] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] [L765] 0 main$tmp_guard0 = __unbuffered_cnt == 2 [L766] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1925={5:0}, t1926={3:0}, x=1, y=1] [L767] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L767] RET 0 assume_abort_if_not(main$tmp_guard0) [L769] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1925={5:0}, t1926={3:0}, x=1, y=1] [L771] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1925={5:0}, t1926={3:0}, x=1, y=1] - UnprovableResult [Line: 721]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 722]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 723]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 724]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 725]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 726]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 727]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 728]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 729]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 730]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 731]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 732]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 736]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 737]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 738]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 739]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 740]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 741]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 742]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 743]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 745]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 746]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 747]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 761]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 765]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 766]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 769]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 772]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 763]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 761]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 121 locations, 60 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 258.7s, OverallIterations: 170, TraceHistogramMax: 1, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 218.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14785 SdHoareTripleChecker+Valid, 33.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13422 mSDsluCounter, 3541 SdHoareTripleChecker+Invalid, 27.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3045 mSDsCounter, 2384 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 49772 IncrementalHoareTripleChecker+Invalid, 52156 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2384 mSolverCounterUnsat, 496 mSDtfsCounter, 49772 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1547 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1540 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1680 ImplicationChecksByTransitivity, 17.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14371occurred in iteration=147, InterpolantAutomatonStates: 1492, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 37.8s InterpolantComputationTime, 3207 NumberOfCodeBlocks, 3207 NumberOfCodeBlocksAsserted, 170 NumberOfCheckSat, 3010 ConstructedInterpolants, 0 QuantifiedInterpolants, 77654 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 169 InterpolantComputations, 169 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-02-02 16:13:06,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE