./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/safe022_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fced0e87 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/safe022_tso.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.extract-columns-fced0e8-m [2024-01-31 16:03:43,078 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:03:43,144 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:03:43,151 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:03:43,152 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:03:43,178 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:03:43,179 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:03:43,179 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:03:43,180 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:03:43,184 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:03:43,184 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:03:43,184 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:03:43,185 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:03:43,186 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:03:43,187 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:03:43,187 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:03:43,187 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:03:43,187 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:03:43,188 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:03:43,188 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:03:43,188 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:03:43,189 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:03:43,189 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:03:43,189 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:03:43,189 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:03:43,189 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:03:43,190 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:03:43,190 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:03:43,191 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:03:43,191 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:03:43,192 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:03:43,192 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:03:43,192 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:03:43,192 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:03:43,192 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:03:43,193 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:03:43,193 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:03:43,193 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:03:43,193 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:03:43,193 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:03:43,194 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:03:43,194 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:03:43,194 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:03:43,194 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:03:43,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:03:43,449 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:03:43,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:03:43,452 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:03:43,453 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:03:43,454 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.i [2024-01-31 16:03:44,647 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:03:44,813 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:03:44,813 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe022_tso.i [2024-01-31 16:03:44,824 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d34058a1e/5047a558cf8b455793ed54c200efa8ad/FLAGb4552f691 [2024-01-31 16:03:44,835 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d34058a1e/5047a558cf8b455793ed54c200efa8ad [2024-01-31 16:03:44,837 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:03:44,838 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:03:44,840 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/safe022_tso.yml/witness.yml [2024-01-31 16:03:45,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:03:45,080 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:03:45,081 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:03:45,081 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:03:45,085 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:03:45,086 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:03:44" (1/2) ... [2024-01-31 16:03:45,087 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37d6b992 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:03:45, skipping insertion in model container [2024-01-31 16:03:45,087 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:03:44" (1/2) ... [2024-01-31 16:03:45,089 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@509d474e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:03:45, skipping insertion in model container [2024-01-31 16:03:45,089 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:03:45" (2/2) ... [2024-01-31 16:03:45,089 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37d6b992 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:03:45, skipping insertion in model container [2024-01-31 16:03:45,089 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:03:45" (2/2) ... [2024-01-31 16:03:45,090 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:03:45,319 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 16:03:45,321 INFO L98 nessWitnessExtractor]: Location invariant before [L771-L771] ((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EBX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EBX <= 1)) && (x <= 1)) && (y <= 1)) && (__unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-01-31 16:03:45,321 INFO L98 nessWitnessExtractor]: Location invariant before [L738-L738] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= __unbuffered_p1_EBX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (__unbuffered_p1_EBX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-01-31 16:03:45,321 INFO L98 nessWitnessExtractor]: Location invariant before [L722-L722] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= __unbuffered_p1_EBX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (__unbuffered_p1_EBX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-01-31 16:03:45,321 INFO L98 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 1 [2024-01-31 16:03:45,321 INFO L98 nessWitnessExtractor]: Location invariant before [L724-L724] (unsigned long )arg == 0UL [2024-01-31 16:03:45,322 INFO L98 nessWitnessExtractor]: Location invariant before [L740-L740] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= __unbuffered_p1_EBX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (__unbuffered_p1_EBX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-01-31 16:03:45,322 INFO L98 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 1 [2024-01-31 16:03:45,322 INFO L98 nessWitnessExtractor]: Location invariant before [L723-L723] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= __unbuffered_p1_EBX)) && (0 <= x)) && (__unbuffered_p1_EAX <= 1)) && (__unbuffered_p1_EBX <= 1)) && (x <= 1)) && (y == 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1) [2024-01-31 16:03:45,323 INFO L98 nessWitnessExtractor]: Location invariant before [L737-L737] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= __unbuffered_p1_EBX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (__unbuffered_p1_EBX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-01-31 16:03:45,323 INFO L98 nessWitnessExtractor]: Location invariant before [L728-L728] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= __unbuffered_p1_EBX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (__unbuffered_p1_EBX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-01-31 16:03:45,323 INFO L98 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 0 [2024-01-31 16:03:45,323 INFO L98 nessWitnessExtractor]: Location invariant before [L765-L765] ((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= __unbuffered_p1_EBX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (__unbuffered_p1_EBX <= 1)) && (x <= 1)) && (y <= 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-01-31 16:03:45,323 INFO L98 nessWitnessExtractor]: Location invariant before [L769-L769] ((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= __unbuffered_p1_EBX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (__unbuffered_p1_EBX <= 1)) && (x <= 1)) && (y <= 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-01-31 16:03:45,323 INFO L98 nessWitnessExtractor]: Location invariant before [L741-L741] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= __unbuffered_p1_EBX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (__unbuffered_p1_EBX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-01-31 16:03:45,324 INFO L98 nessWitnessExtractor]: Location invariant before [L18-L18] expression == 1 [2024-01-31 16:03:45,324 INFO L98 nessWitnessExtractor]: Location invariant before [L18-L18] ((0 <= expression) && (expression <= 1)) && (expression == 0 || expression == 1) [2024-01-31 16:03:45,324 INFO L98 nessWitnessExtractor]: Location invariant before [L725-L725] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= __unbuffered_p1_EBX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (__unbuffered_p1_EBX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-01-31 16:03:45,324 INFO L98 nessWitnessExtractor]: Location invariant before [L766-L766] ((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= __unbuffered_p1_EBX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (__unbuffered_p1_EBX <= 1)) && (x <= 1)) && (y <= 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-01-31 16:03:45,324 INFO L98 nessWitnessExtractor]: Location invariant before [L736-L736] (unsigned long )arg == 0UL [2024-01-31 16:03:45,324 INFO L98 nessWitnessExtractor]: Location invariant before [L772-L772] ((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= __unbuffered_p1_EBX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (__unbuffered_p1_EBX <= 1)) && (x <= 1)) && (y <= 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-01-31 16:03:45,325 INFO L98 nessWitnessExtractor]: Location invariant before [L746-L746] (((((((((((((((0 <= __unbuffered_p1_EAX) && (0 <= __unbuffered_p1_EBX)) && (0 <= x)) && (0 <= y)) && (1 <= __unbuffered_cnt)) && (__unbuffered_p1_EAX <= 1)) && (__unbuffered_p1_EBX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-01-31 16:03:45,325 INFO L98 nessWitnessExtractor]: Location invariant before [L745-L745] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= __unbuffered_p1_EBX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (__unbuffered_p1_EBX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-01-31 16:03:45,325 INFO L98 nessWitnessExtractor]: Location invariant before [L731-L731] (((((((((((((((0 <= __unbuffered_p1_EAX) && (0 <= __unbuffered_p1_EBX)) && (0 <= x)) && (0 <= y)) && (1 <= __unbuffered_cnt)) && (__unbuffered_p1_EAX <= 1)) && (__unbuffered_p1_EBX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-01-31 16:03:45,325 INFO L98 nessWitnessExtractor]: Location invariant before [L739-L739] (unsigned long )arg == 0UL [2024-01-31 16:03:45,325 INFO L98 nessWitnessExtractor]: Location invariant before [L747-L747] (unsigned long )arg == 0UL [2024-01-31 16:03:45,326 INFO L98 nessWitnessExtractor]: Location invariant before [L743-L743] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= __unbuffered_p1_EBX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (__unbuffered_p1_EBX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-01-31 16:03:45,326 INFO L98 nessWitnessExtractor]: Location invariant before [L761-L761] ((((((__unbuffered_cnt == 0) && (__unbuffered_p1_EAX == 0)) && (__unbuffered_p1_EBX == 0)) && (main$tmp_guard0 == (_Bool)0)) && (main$tmp_guard1 == (_Bool)0)) && (x == 0)) && (y == 0) [2024-01-31 16:03:45,326 INFO L98 nessWitnessExtractor]: Location invariant before [L729-L729] (unsigned long )arg == 0UL [2024-01-31 16:03:45,326 INFO L98 nessWitnessExtractor]: Location invariant before [L744-L744] (unsigned long )arg == 0UL [2024-01-31 16:03:45,326 INFO L98 nessWitnessExtractor]: Location invariant before [L18-L18] expression == 0 [2024-01-31 16:03:45,326 INFO L98 nessWitnessExtractor]: Location invariant before [L742-L742] (unsigned long )arg == 0UL [2024-01-31 16:03:45,326 INFO L98 nessWitnessExtractor]: Location invariant before [L732-L732] (unsigned long )arg == 0UL [2024-01-31 16:03:45,327 INFO L98 nessWitnessExtractor]: Location invariant before [L721-L721] (unsigned long )arg == 0UL [2024-01-31 16:03:45,327 INFO L98 nessWitnessExtractor]: Location invariant before [L730-L730] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= __unbuffered_p1_EBX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (__unbuffered_p1_EBX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-01-31 16:03:45,327 INFO L98 nessWitnessExtractor]: Location invariant before [L727-L727] (unsigned long )arg == 0UL [2024-01-31 16:03:45,327 INFO L98 nessWitnessExtractor]: Location invariant before [L726-L726] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= __unbuffered_p1_EBX)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (__unbuffered_p1_EBX <= 1)) && (y <= 1)) && (x == 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (y == 0 || y == 1) [2024-01-31 16:03:45,367 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:03:45,510 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/safe022_tso.i[945,958] [2024-01-31 16:03:45,636 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:03:45,643 INFO L204 MainTranslator]: Completed pre-run Start Parsing Local [2024-01-31 16:03:45,670 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/safe022_tso.i[945,958] Start Parsing Local Start Parsing Local [2024-01-31 16:03:45,671 WARN L424 MainDispatcher]: Unable to annotate ; with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-01-31 16:03:45,805 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:03:45,841 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:03:45,844 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:03:45 WrapperNode [2024-01-31 16:03:45,844 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:03:45,845 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:03:45,845 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:03:45,845 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:03:45,851 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:03:45" (1/1) ... [2024-01-31 16:03:45,879 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:03:45" (1/1) ... [2024-01-31 16:03:45,917 INFO L138 Inliner]: procedures = 175, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 67 [2024-01-31 16:03:45,917 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:03:45,918 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:03:45,918 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:03:45,918 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:03:45,948 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:03:45" (1/1) ... [2024-01-31 16:03:45,949 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:03:45" (1/1) ... [2024-01-31 16:03:45,961 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:03:45" (1/1) ... [2024-01-31 16:03:45,982 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-01-31 16:03:45,982 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:03:45" (1/1) ... [2024-01-31 16:03:45,983 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:03:45" (1/1) ... [2024-01-31 16:03:45,994 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:03:45" (1/1) ... [2024-01-31 16:03:46,001 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:03:45" (1/1) ... [2024-01-31 16:03:46,005 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:03:45" (1/1) ... [2024-01-31 16:03:46,011 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:03:45" (1/1) ... [2024-01-31 16:03:46,014 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:03:46,019 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:03:46,019 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:03:46,020 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:03:46,020 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:03:45" (1/1) ... [2024-01-31 16:03:46,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:03:46,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:03:46,086 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-31 16:03:46,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-31 16:03:46,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:03:46,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:03:46,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:03:46,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 16:03:46,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:03:46,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:03:46,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:03:46,132 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-31 16:03:46,132 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-31 16:03:46,132 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-31 16:03:46,132 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-31 16:03:46,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:03:46,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:03:46,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:03:46,133 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 16:03:46,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:03:46,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:03:46,134 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 16:03:46,280 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:03:46,283 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:03:46,726 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:03:46,726 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:03:46,922 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:03:46,923 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-31 16:03:46,923 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:03:46 BoogieIcfgContainer [2024-01-31 16:03:46,923 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:03:46,940 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:03:46,940 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:03:46,943 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:03:46,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:03:44" (1/4) ... [2024-01-31 16:03:46,944 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@280a96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:03:46, skipping insertion in model container [2024-01-31 16:03:46,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:03:45" (2/4) ... [2024-01-31 16:03:46,945 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@280a96 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:03:46, skipping insertion in model container [2024-01-31 16:03:46,945 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:03:45" (3/4) ... [2024-01-31 16:03:46,945 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@280a96 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:03:46, skipping insertion in model container [2024-01-31 16:03:46,945 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:03:46" (4/4) ... [2024-01-31 16:03:46,946 INFO L112 eAbstractionObserver]: Analyzing ICFG safe022_tso.i [2024-01-31 16:03:46,961 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:03:46,968 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2024-01-31 16:03:46,968 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:03:47,041 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 16:03:47,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 73 transitions, 154 flow [2024-01-31 16:03:47,113 INFO L124 PetriNetUnfolderBase]: 1/71 cut-off events. [2024-01-31 16:03:47,114 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:03:47,118 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. [2024-01-31 16:03:47,118 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 73 transitions, 154 flow [2024-01-31 16:03:47,122 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 71 transitions, 148 flow [2024-01-31 16:03:47,133 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:03:47,140 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;@58e4ed1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:03:47,140 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-01-31 16:03:47,143 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:03:47,143 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-31 16:03:47,143 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:03:47,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:47,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-31 16:03:47,145 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:47,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:47,149 INFO L85 PathProgramCache]: Analyzing trace with hash 10181, now seen corresponding path program 1 times [2024-01-31 16:03:47,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:47,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735920887] [2024-01-31 16:03:47,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:47,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:47,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:47,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:47,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:47,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735920887] [2024-01-31 16:03:47,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735920887] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:47,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:47,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:03:47,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863104882] [2024-01-31 16:03:47,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:47,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:03:47,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:47,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:03:47,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:03:47,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 73 [2024-01-31 16:03:47,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 71 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:47,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:47,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 73 [2024-01-31 16:03:47,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:48,167 INFO L124 PetriNetUnfolderBase]: 1643/3462 cut-off events. [2024-01-31 16:03:48,168 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-01-31 16:03:48,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6125 conditions, 3462 events. 1643/3462 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 28376 event pairs, 799 based on Foata normal form. 82/2211 useless extension candidates. Maximal degree in co-relation 6113. Up to 2531 conditions per place. [2024-01-31 16:03:48,197 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 44 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2024-01-31 16:03:48,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 75 transitions, 253 flow [2024-01-31 16:03:48,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:03:48,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:03:48,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 154 transitions. [2024-01-31 16:03:48,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7031963470319634 [2024-01-31 16:03:48,210 INFO L175 Difference]: Start difference. First operand has 77 places, 71 transitions, 148 flow. Second operand 3 states and 154 transitions. [2024-01-31 16:03:48,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 75 transitions, 253 flow [2024-01-31 16:03:48,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 75 transitions, 250 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:03:48,219 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 147 flow [2024-01-31 16:03:48,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2024-01-31 16:03:48,223 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -8 predicate places. [2024-01-31 16:03:48,223 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 147 flow [2024-01-31 16:03:48,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:48,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:48,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-31 16:03:48,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:03:48,224 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:48,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:48,226 INFO L85 PathProgramCache]: Analyzing trace with hash 303701841, now seen corresponding path program 1 times [2024-01-31 16:03:48,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:48,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441253684] [2024-01-31 16:03:48,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:48,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:48,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:48,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:48,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:48,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441253684] [2024-01-31 16:03:48,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441253684] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:48,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:48,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:03:48,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046685761] [2024-01-31 16:03:48,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:48,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:03:48,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:48,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:03:48,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:03:48,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 73 [2024-01-31 16:03:48,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 147 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:48,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:48,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 73 [2024-01-31 16:03:48,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:48,843 INFO L124 PetriNetUnfolderBase]: 1716/3526 cut-off events. [2024-01-31 16:03:48,843 INFO L125 PetriNetUnfolderBase]: For 262/262 co-relation queries the response was YES. [2024-01-31 16:03:48,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6665 conditions, 3526 events. 1716/3526 cut-off events. For 262/262 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 28264 event pairs, 772 based on Foata normal form. 384/2867 useless extension candidates. Maximal degree in co-relation 6652. Up to 2682 conditions per place. [2024-01-31 16:03:48,869 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 55 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2024-01-31 16:03:48,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 79 transitions, 302 flow [2024-01-31 16:03:48,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:03:48,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:03:48,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 160 transitions. [2024-01-31 16:03:48,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.547945205479452 [2024-01-31 16:03:48,876 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 147 flow. Second operand 4 states and 160 transitions. [2024-01-31 16:03:48,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 79 transitions, 302 flow [2024-01-31 16:03:48,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 79 transitions, 298 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:03:48,879 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 138 flow [2024-01-31 16:03:48,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2024-01-31 16:03:48,880 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -11 predicate places. [2024-01-31 16:03:48,881 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 138 flow [2024-01-31 16:03:48,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:48,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:48,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-31 16:03:48,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:03:48,882 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:48,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:48,883 INFO L85 PathProgramCache]: Analyzing trace with hash 824822840, now seen corresponding path program 1 times [2024-01-31 16:03:48,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:48,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843560675] [2024-01-31 16:03:48,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:48,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:49,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:49,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:49,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843560675] [2024-01-31 16:03:49,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843560675] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:49,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:49,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:03:49,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340629766] [2024-01-31 16:03:49,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:49,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:03:49,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:49,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:03:49,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:03:49,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 73 [2024-01-31 16:03:49,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 138 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:49,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:49,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 73 [2024-01-31 16:03:49,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:49,613 INFO L124 PetriNetUnfolderBase]: 2350/4626 cut-off events. [2024-01-31 16:03:49,614 INFO L125 PetriNetUnfolderBase]: For 371/371 co-relation queries the response was YES. [2024-01-31 16:03:49,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8874 conditions, 4626 events. 2350/4626 cut-off events. For 371/371 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 36415 event pairs, 1140 based on Foata normal form. 26/3383 useless extension candidates. Maximal degree in co-relation 8860. Up to 3579 conditions per place. [2024-01-31 16:03:49,642 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 60 selfloop transitions, 5 changer transitions 0/83 dead transitions. [2024-01-31 16:03:49,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 83 transitions, 326 flow [2024-01-31 16:03:49,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:03:49,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:03:49,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 146 transitions. [2024-01-31 16:03:49,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-01-31 16:03:49,644 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 138 flow. Second operand 4 states and 146 transitions. [2024-01-31 16:03:49,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 83 transitions, 326 flow [2024-01-31 16:03:49,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 83 transitions, 322 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:03:49,648 INFO L231 Difference]: Finished difference. Result has 69 places, 60 transitions, 161 flow [2024-01-31 16:03:49,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=161, PETRI_PLACES=69, PETRI_TRANSITIONS=60} [2024-01-31 16:03:49,649 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -8 predicate places. [2024-01-31 16:03:49,649 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 60 transitions, 161 flow [2024-01-31 16:03:49,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:49,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:49,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:49,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:03:49,650 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:49,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:49,650 INFO L85 PathProgramCache]: Analyzing trace with hash -201206786, now seen corresponding path program 1 times [2024-01-31 16:03:49,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:49,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648041354] [2024-01-31 16:03:49,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:49,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:49,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:49,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:49,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:49,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648041354] [2024-01-31 16:03:49,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648041354] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:49,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:49,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:03:49,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189734564] [2024-01-31 16:03:49,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:49,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:03:49,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:49,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:03:49,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:03:49,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 73 [2024-01-31 16:03:49,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 60 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:49,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:49,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 73 [2024-01-31 16:03:49,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:50,155 INFO L124 PetriNetUnfolderBase]: 1778/3306 cut-off events. [2024-01-31 16:03:50,155 INFO L125 PetriNetUnfolderBase]: For 384/410 co-relation queries the response was YES. [2024-01-31 16:03:50,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6621 conditions, 3306 events. 1778/3306 cut-off events. For 384/410 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 24279 event pairs, 123 based on Foata normal form. 390/2826 useless extension candidates. Maximal degree in co-relation 6605. Up to 2657 conditions per place. [2024-01-31 16:03:50,168 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 61 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2024-01-31 16:03:50,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 81 transitions, 343 flow [2024-01-31 16:03:50,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:03:50,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:03:50,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 165 transitions. [2024-01-31 16:03:50,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.565068493150685 [2024-01-31 16:03:50,170 INFO L175 Difference]: Start difference. First operand has 69 places, 60 transitions, 161 flow. Second operand 4 states and 165 transitions. [2024-01-31 16:03:50,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 81 transitions, 343 flow [2024-01-31 16:03:50,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 81 transitions, 331 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:03:50,172 INFO L231 Difference]: Finished difference. Result has 65 places, 55 transitions, 147 flow [2024-01-31 16:03:50,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=147, PETRI_PLACES=65, PETRI_TRANSITIONS=55} [2024-01-31 16:03:50,173 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -12 predicate places. [2024-01-31 16:03:50,173 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 55 transitions, 147 flow [2024-01-31 16:03:50,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:50,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:50,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:50,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:03:50,174 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:50,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:50,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1942442687, now seen corresponding path program 1 times [2024-01-31 16:03:50,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:50,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854162492] [2024-01-31 16:03:50,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:50,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:50,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:50,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:50,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:50,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854162492] [2024-01-31 16:03:50,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854162492] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:50,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:50,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:03:50,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372007617] [2024-01-31 16:03:50,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:50,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:03:50,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:50,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:03:50,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:03:50,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 73 [2024-01-31 16:03:50,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 55 transitions, 147 flow. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:50,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:50,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 73 [2024-01-31 16:03:50,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:50,844 INFO L124 PetriNetUnfolderBase]: 2406/4393 cut-off events. [2024-01-31 16:03:50,844 INFO L125 PetriNetUnfolderBase]: For 389/415 co-relation queries the response was YES. [2024-01-31 16:03:50,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8816 conditions, 4393 events. 2406/4393 cut-off events. For 389/415 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 32029 event pairs, 1990 based on Foata normal form. 29/3171 useless extension candidates. Maximal degree in co-relation 8801. Up to 3790 conditions per place. [2024-01-31 16:03:50,869 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 50 selfloop transitions, 6 changer transitions 0/70 dead transitions. [2024-01-31 16:03:50,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 70 transitions, 298 flow [2024-01-31 16:03:50,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:03:50,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:03:50,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 139 transitions. [2024-01-31 16:03:50,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.476027397260274 [2024-01-31 16:03:50,872 INFO L175 Difference]: Start difference. First operand has 65 places, 55 transitions, 147 flow. Second operand 4 states and 139 transitions. [2024-01-31 16:03:50,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 70 transitions, 298 flow [2024-01-31 16:03:50,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 70 transitions, 292 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:03:50,874 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 180 flow [2024-01-31 16:03:50,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=68, PETRI_TRANSITIONS=57} [2024-01-31 16:03:50,875 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -9 predicate places. [2024-01-31 16:03:50,875 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 180 flow [2024-01-31 16:03:50,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:50,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:50,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:50,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:03:50,876 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:50,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:50,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1914187909, now seen corresponding path program 1 times [2024-01-31 16:03:50,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:50,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526598923] [2024-01-31 16:03:50,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:50,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:50,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:51,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:51,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:51,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526598923] [2024-01-31 16:03:51,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526598923] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:51,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:51,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:03:51,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423153490] [2024-01-31 16:03:51,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:51,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:03:51,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:51,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:03:51,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:03:51,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:51,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 180 flow. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:51,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:51,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:51,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:51,669 INFO L124 PetriNetUnfolderBase]: 2079/4287 cut-off events. [2024-01-31 16:03:51,669 INFO L125 PetriNetUnfolderBase]: For 897/916 co-relation queries the response was YES. [2024-01-31 16:03:51,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8664 conditions, 4287 events. 2079/4287 cut-off events. For 897/916 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 33361 event pairs, 1324 based on Foata normal form. 20/3465 useless extension candidates. Maximal degree in co-relation 8646. Up to 3225 conditions per place. [2024-01-31 16:03:51,699 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 60 selfloop transitions, 8 changer transitions 0/82 dead transitions. [2024-01-31 16:03:51,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 82 transitions, 387 flow [2024-01-31 16:03:51,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:03:51,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:03:51,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 171 transitions. [2024-01-31 16:03:51,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4684931506849315 [2024-01-31 16:03:51,701 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 180 flow. Second operand 5 states and 171 transitions. [2024-01-31 16:03:51,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 82 transitions, 387 flow [2024-01-31 16:03:51,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 82 transitions, 381 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:03:51,705 INFO L231 Difference]: Finished difference. Result has 74 places, 63 transitions, 237 flow [2024-01-31 16:03:51,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=175, 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=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=237, PETRI_PLACES=74, PETRI_TRANSITIONS=63} [2024-01-31 16:03:51,706 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -3 predicate places. [2024-01-31 16:03:51,706 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 63 transitions, 237 flow [2024-01-31 16:03:51,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:51,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:51,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:51,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 16:03:51,707 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:51,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:51,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1288565090, now seen corresponding path program 1 times [2024-01-31 16:03:51,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:51,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233862610] [2024-01-31 16:03:51,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:51,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:51,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:51,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:51,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:51,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233862610] [2024-01-31 16:03:51,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233862610] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:51,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:51,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:03:51,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466490217] [2024-01-31 16:03:51,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:51,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:03:51,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:51,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:03:51,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:03:51,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:51,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 63 transitions, 237 flow. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:51,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:51,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:51,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:52,579 INFO L124 PetriNetUnfolderBase]: 1863/3845 cut-off events. [2024-01-31 16:03:52,579 INFO L125 PetriNetUnfolderBase]: For 1455/1478 co-relation queries the response was YES. [2024-01-31 16:03:52,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8306 conditions, 3845 events. 1863/3845 cut-off events. For 1455/1478 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 29491 event pairs, 1045 based on Foata normal form. 22/3145 useless extension candidates. Maximal degree in co-relation 8284. Up to 2879 conditions per place. [2024-01-31 16:03:52,602 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 70 selfloop transitions, 10 changer transitions 0/94 dead transitions. [2024-01-31 16:03:52,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 94 transitions, 492 flow [2024-01-31 16:03:52,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:03:52,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:03:52,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 199 transitions. [2024-01-31 16:03:52,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.454337899543379 [2024-01-31 16:03:52,604 INFO L175 Difference]: Start difference. First operand has 74 places, 63 transitions, 237 flow. Second operand 6 states and 199 transitions. [2024-01-31 16:03:52,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 94 transitions, 492 flow [2024-01-31 16:03:52,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 94 transitions, 492 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 16:03:52,611 INFO L231 Difference]: Finished difference. Result has 83 places, 71 transitions, 325 flow [2024-01-31 16:03:52,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=325, PETRI_PLACES=83, PETRI_TRANSITIONS=71} [2024-01-31 16:03:52,612 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 6 predicate places. [2024-01-31 16:03:52,612 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 71 transitions, 325 flow [2024-01-31 16:03:52,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:52,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:52,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:52,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 16:03:52,615 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:52,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:52,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1842400867, now seen corresponding path program 1 times [2024-01-31 16:03:52,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:52,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190306195] [2024-01-31 16:03:52,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:52,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:52,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:52,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:52,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:52,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190306195] [2024-01-31 16:03:52,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190306195] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:52,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:52,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:03:52,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083762011] [2024-01-31 16:03:52,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:52,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:03:52,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:52,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:03:52,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:03:52,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:52,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 71 transitions, 325 flow. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:52,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:52,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:52,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:53,685 INFO L124 PetriNetUnfolderBase]: 1878/3850 cut-off events. [2024-01-31 16:03:53,685 INFO L125 PetriNetUnfolderBase]: For 2188/2202 co-relation queries the response was YES. [2024-01-31 16:03:53,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9018 conditions, 3850 events. 1878/3850 cut-off events. For 2188/2202 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 29584 event pairs, 1308 based on Foata normal form. 20/3179 useless extension candidates. Maximal degree in co-relation 8990. Up to 2939 conditions per place. [2024-01-31 16:03:53,710 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 62 selfloop transitions, 15 changer transitions 0/93 dead transitions. [2024-01-31 16:03:53,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 93 transitions, 553 flow [2024-01-31 16:03:53,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:03:53,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:03:53,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 173 transitions. [2024-01-31 16:03:53,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.473972602739726 [2024-01-31 16:03:53,712 INFO L175 Difference]: Start difference. First operand has 83 places, 71 transitions, 325 flow. Second operand 5 states and 173 transitions. [2024-01-31 16:03:53,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 93 transitions, 553 flow [2024-01-31 16:03:53,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 93 transitions, 553 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 16:03:53,717 INFO L231 Difference]: Finished difference. Result has 89 places, 77 transitions, 412 flow [2024-01-31 16:03:53,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=412, PETRI_PLACES=89, PETRI_TRANSITIONS=77} [2024-01-31 16:03:53,717 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 12 predicate places. [2024-01-31 16:03:53,717 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 77 transitions, 412 flow [2024-01-31 16:03:53,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:53,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:53,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:53,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 16:03:53,718 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:53,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:53,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1980339509, now seen corresponding path program 2 times [2024-01-31 16:03:53,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:53,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871849390] [2024-01-31 16:03:53,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:53,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:53,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:53,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:53,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:53,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871849390] [2024-01-31 16:03:53,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871849390] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:53,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:53,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:03:53,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460949764] [2024-01-31 16:03:53,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:53,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:03:53,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:53,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:03:53,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:03:53,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:53,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 77 transitions, 412 flow. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:53,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:53,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:53,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:54,379 INFO L124 PetriNetUnfolderBase]: 1878/3843 cut-off events. [2024-01-31 16:03:54,380 INFO L125 PetriNetUnfolderBase]: For 2754/2768 co-relation queries the response was YES. [2024-01-31 16:03:54,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9338 conditions, 3843 events. 1878/3843 cut-off events. For 2754/2768 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 29501 event pairs, 1307 based on Foata normal form. 20/3171 useless extension candidates. Maximal degree in co-relation 9306. Up to 2942 conditions per place. [2024-01-31 16:03:54,399 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 59 selfloop transitions, 16 changer transitions 0/91 dead transitions. [2024-01-31 16:03:54,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 91 transitions, 621 flow [2024-01-31 16:03:54,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:03:54,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:03:54,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 166 transitions. [2024-01-31 16:03:54,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4547945205479452 [2024-01-31 16:03:54,401 INFO L175 Difference]: Start difference. First operand has 89 places, 77 transitions, 412 flow. Second operand 5 states and 166 transitions. [2024-01-31 16:03:54,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 91 transitions, 621 flow [2024-01-31 16:03:54,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 91 transitions, 589 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-01-31 16:03:54,406 INFO L231 Difference]: Finished difference. Result has 91 places, 80 transitions, 453 flow [2024-01-31 16:03:54,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=453, PETRI_PLACES=91, PETRI_TRANSITIONS=80} [2024-01-31 16:03:54,407 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 14 predicate places. [2024-01-31 16:03:54,407 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 80 transitions, 453 flow [2024-01-31 16:03:54,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:54,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:54,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:54,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 16:03:54,408 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:54,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:54,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1533602106, now seen corresponding path program 1 times [2024-01-31 16:03:54,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:54,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499920649] [2024-01-31 16:03:54,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:54,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:54,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:54,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:54,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:54,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499920649] [2024-01-31 16:03:54,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499920649] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:54,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:54,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:03:54,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028632576] [2024-01-31 16:03:54,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:54,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:03:54,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:54,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:03:54,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:03:54,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:54,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 80 transitions, 453 flow. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:54,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:54,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:54,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:55,025 INFO L124 PetriNetUnfolderBase]: 1888/3872 cut-off events. [2024-01-31 16:03:55,026 INFO L125 PetriNetUnfolderBase]: For 3102/3116 co-relation queries the response was YES. [2024-01-31 16:03:55,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9512 conditions, 3872 events. 1888/3872 cut-off events. For 3102/3116 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 29482 event pairs, 1250 based on Foata normal form. 20/3201 useless extension candidates. Maximal degree in co-relation 9479. Up to 2938 conditions per place. [2024-01-31 16:03:55,048 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 72 selfloop transitions, 15 changer transitions 0/103 dead transitions. [2024-01-31 16:03:55,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 103 transitions, 698 flow [2024-01-31 16:03:55,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:03:55,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:03:55,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 196 transitions. [2024-01-31 16:03:55,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4474885844748858 [2024-01-31 16:03:55,051 INFO L175 Difference]: Start difference. First operand has 91 places, 80 transitions, 453 flow. Second operand 6 states and 196 transitions. [2024-01-31 16:03:55,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 103 transitions, 698 flow [2024-01-31 16:03:55,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 103 transitions, 686 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:03:55,056 INFO L231 Difference]: Finished difference. Result has 97 places, 83 transitions, 500 flow [2024-01-31 16:03:55,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=500, PETRI_PLACES=97, PETRI_TRANSITIONS=83} [2024-01-31 16:03:55,058 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 20 predicate places. [2024-01-31 16:03:55,060 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 83 transitions, 500 flow [2024-01-31 16:03:55,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:55,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:55,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:55,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-31 16:03:55,060 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:55,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:55,061 INFO L85 PathProgramCache]: Analyzing trace with hash -231962488, now seen corresponding path program 2 times [2024-01-31 16:03:55,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:55,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761827042] [2024-01-31 16:03:55,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:55,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:55,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:55,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:55,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:55,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761827042] [2024-01-31 16:03:55,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761827042] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:55,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:55,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:03:55,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484424640] [2024-01-31 16:03:55,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:55,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:03:55,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:55,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:03:55,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:03:55,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:55,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 83 transitions, 500 flow. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:55,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:55,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:55,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:55,838 INFO L124 PetriNetUnfolderBase]: 1898/3894 cut-off events. [2024-01-31 16:03:55,838 INFO L125 PetriNetUnfolderBase]: For 3599/3613 co-relation queries the response was YES. [2024-01-31 16:03:55,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9699 conditions, 3894 events. 1898/3894 cut-off events. For 3599/3613 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 29719 event pairs, 1250 based on Foata normal form. 20/3223 useless extension candidates. Maximal degree in co-relation 9663. Up to 2947 conditions per place. [2024-01-31 16:03:55,860 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 71 selfloop transitions, 16 changer transitions 0/103 dead transitions. [2024-01-31 16:03:55,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 103 transitions, 740 flow [2024-01-31 16:03:55,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:03:55,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:03:55,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 195 transitions. [2024-01-31 16:03:55,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4452054794520548 [2024-01-31 16:03:55,863 INFO L175 Difference]: Start difference. First operand has 97 places, 83 transitions, 500 flow. Second operand 6 states and 195 transitions. [2024-01-31 16:03:55,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 103 transitions, 740 flow [2024-01-31 16:03:55,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 103 transitions, 704 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-01-31 16:03:55,868 INFO L231 Difference]: Finished difference. Result has 99 places, 85 transitions, 517 flow [2024-01-31 16:03:55,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=517, PETRI_PLACES=99, PETRI_TRANSITIONS=85} [2024-01-31 16:03:55,869 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 22 predicate places. [2024-01-31 16:03:55,869 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 85 transitions, 517 flow [2024-01-31 16:03:55,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:55,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:55,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:55,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-31 16:03:55,870 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:55,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:55,870 INFO L85 PathProgramCache]: Analyzing trace with hash 435749522, now seen corresponding path program 3 times [2024-01-31 16:03:55,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:55,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531406264] [2024-01-31 16:03:55,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:55,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:55,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:56,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:56,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:56,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531406264] [2024-01-31 16:03:56,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531406264] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:56,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:56,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:03:56,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760749710] [2024-01-31 16:03:56,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:56,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:03:56,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:56,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:03:56,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:03:56,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:56,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 85 transitions, 517 flow. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:56,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:56,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:56,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:56,608 INFO L124 PetriNetUnfolderBase]: 1888/3857 cut-off events. [2024-01-31 16:03:56,608 INFO L125 PetriNetUnfolderBase]: For 3578/3592 co-relation queries the response was YES. [2024-01-31 16:03:56,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9628 conditions, 3857 events. 1888/3857 cut-off events. For 3578/3592 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 29428 event pairs, 1272 based on Foata normal form. 20/3183 useless extension candidates. Maximal degree in co-relation 9591. Up to 2944 conditions per place. [2024-01-31 16:03:56,628 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 67 selfloop transitions, 17 changer transitions 0/100 dead transitions. [2024-01-31 16:03:56,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 100 transitions, 724 flow [2024-01-31 16:03:56,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:03:56,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:03:56,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 191 transitions. [2024-01-31 16:03:56,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4360730593607306 [2024-01-31 16:03:56,630 INFO L175 Difference]: Start difference. First operand has 99 places, 85 transitions, 517 flow. Second operand 6 states and 191 transitions. [2024-01-31 16:03:56,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 100 transitions, 724 flow [2024-01-31 16:03:56,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 100 transitions, 705 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-01-31 16:03:56,636 INFO L231 Difference]: Finished difference. Result has 103 places, 86 transitions, 545 flow [2024-01-31 16:03:56,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=545, PETRI_PLACES=103, PETRI_TRANSITIONS=86} [2024-01-31 16:03:56,638 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 26 predicate places. [2024-01-31 16:03:56,639 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 86 transitions, 545 flow [2024-01-31 16:03:56,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:56,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:56,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:56,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-31 16:03:56,640 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:56,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:56,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1606047879, now seen corresponding path program 1 times [2024-01-31 16:03:56,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:56,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192696309] [2024-01-31 16:03:56,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:56,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:56,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:56,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:56,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:56,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192696309] [2024-01-31 16:03:56,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192696309] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:56,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:56,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:03:56,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710605962] [2024-01-31 16:03:56,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:56,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:03:56,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:56,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:03:56,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:03:56,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:03:56,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 86 transitions, 545 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) [2024-01-31 16:03:56,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:56,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:03:56,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:57,220 INFO L124 PetriNetUnfolderBase]: 1376/2887 cut-off events. [2024-01-31 16:03:57,221 INFO L125 PetriNetUnfolderBase]: For 3441/3453 co-relation queries the response was YES. [2024-01-31 16:03:57,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7401 conditions, 2887 events. 1376/2887 cut-off events. For 3441/3453 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 21376 event pairs, 650 based on Foata normal form. 38/2436 useless extension candidates. Maximal degree in co-relation 7363. Up to 1961 conditions per place. [2024-01-31 16:03:57,237 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 62 selfloop transitions, 26 changer transitions 0/113 dead transitions. [2024-01-31 16:03:57,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 113 transitions, 815 flow [2024-01-31 16:03:57,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:03:57,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:03:57,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 256 transitions. [2024-01-31 16:03:57,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5844748858447488 [2024-01-31 16:03:57,239 INFO L175 Difference]: Start difference. First operand has 103 places, 86 transitions, 545 flow. Second operand 6 states and 256 transitions. [2024-01-31 16:03:57,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 113 transitions, 815 flow [2024-01-31 16:03:57,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 113 transitions, 803 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:03:57,246 INFO L231 Difference]: Finished difference. Result has 109 places, 90 transitions, 631 flow [2024-01-31 16:03:57,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=631, PETRI_PLACES=109, PETRI_TRANSITIONS=90} [2024-01-31 16:03:57,247 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 32 predicate places. [2024-01-31 16:03:57,247 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 90 transitions, 631 flow [2024-01-31 16:03:57,247 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) [2024-01-31 16:03:57,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:57,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:57,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-01-31 16:03:57,248 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:57,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:57,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1501501031, now seen corresponding path program 1 times [2024-01-31 16:03:57,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:57,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785814006] [2024-01-31 16:03:57,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:57,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:57,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:57,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:57,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:57,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785814006] [2024-01-31 16:03:57,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785814006] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:57,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:57,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:57,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632000113] [2024-01-31 16:03:57,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:57,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:57,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:57,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:57,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:57,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:57,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 90 transitions, 631 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) [2024-01-31 16:03:57,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:57,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:57,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:58,205 INFO L124 PetriNetUnfolderBase]: 1825/3715 cut-off events. [2024-01-31 16:03:58,206 INFO L125 PetriNetUnfolderBase]: For 5672/5686 co-relation queries the response was YES. [2024-01-31 16:03:58,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9970 conditions, 3715 events. 1825/3715 cut-off events. For 5672/5686 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 27447 event pairs, 1186 based on Foata normal form. 34/3238 useless extension candidates. Maximal degree in co-relation 9929. Up to 2701 conditions per place. [2024-01-31 16:03:58,246 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 79 selfloop transitions, 25 changer transitions 0/120 dead transitions. [2024-01-31 16:03:58,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 120 transitions, 959 flow [2024-01-31 16:03:58,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:03:58,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:03:58,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 250 transitions. [2024-01-31 16:03:58,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4280821917808219 [2024-01-31 16:03:58,248 INFO L175 Difference]: Start difference. First operand has 109 places, 90 transitions, 631 flow. Second operand 8 states and 250 transitions. [2024-01-31 16:03:58,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 120 transitions, 959 flow [2024-01-31 16:03:58,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 120 transitions, 917 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-01-31 16:03:58,258 INFO L231 Difference]: Finished difference. Result has 114 places, 94 transitions, 684 flow [2024-01-31 16:03:58,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=595, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=684, PETRI_PLACES=114, PETRI_TRANSITIONS=94} [2024-01-31 16:03:58,259 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 37 predicate places. [2024-01-31 16:03:58,259 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 94 transitions, 684 flow [2024-01-31 16:03:58,259 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) [2024-01-31 16:03:58,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:58,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:58,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-01-31 16:03:58,259 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:58,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:58,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1058266439, now seen corresponding path program 2 times [2024-01-31 16:03:58,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:58,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831563177] [2024-01-31 16:03:58,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:58,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:58,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:58,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:58,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:58,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831563177] [2024-01-31 16:03:58,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831563177] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:58,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:58,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:03:58,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263558636] [2024-01-31 16:03:58,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:58,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:03:58,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:58,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:03:58,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:03:58,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:03:58,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 94 transitions, 684 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) [2024-01-31 16:03:58,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:58,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:03:58,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:58,863 INFO L124 PetriNetUnfolderBase]: 1348/2852 cut-off events. [2024-01-31 16:03:58,863 INFO L125 PetriNetUnfolderBase]: For 5283/5292 co-relation queries the response was YES. [2024-01-31 16:03:58,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7885 conditions, 2852 events. 1348/2852 cut-off events. For 5283/5292 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 21129 event pairs, 873 based on Foata normal form. 16/2461 useless extension candidates. Maximal degree in co-relation 7843. Up to 2102 conditions per place. [2024-01-31 16:03:58,885 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 64 selfloop transitions, 21 changer transitions 0/110 dead transitions. [2024-01-31 16:03:58,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 110 transitions, 902 flow [2024-01-31 16:03:58,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:03:58,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:03:58,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 246 transitions. [2024-01-31 16:03:58,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5616438356164384 [2024-01-31 16:03:58,887 INFO L175 Difference]: Start difference. First operand has 114 places, 94 transitions, 684 flow. Second operand 6 states and 246 transitions. [2024-01-31 16:03:58,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 110 transitions, 902 flow [2024-01-31 16:03:58,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 110 transitions, 845 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-01-31 16:03:58,903 INFO L231 Difference]: Finished difference. Result has 115 places, 94 transitions, 675 flow [2024-01-31 16:03:58,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=627, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=675, PETRI_PLACES=115, PETRI_TRANSITIONS=94} [2024-01-31 16:03:58,904 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 38 predicate places. [2024-01-31 16:03:58,904 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 94 transitions, 675 flow [2024-01-31 16:03:58,904 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) [2024-01-31 16:03:58,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:58,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:58,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-01-31 16:03:58,905 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:58,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:58,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1450233871, now seen corresponding path program 1 times [2024-01-31 16:03:58,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:58,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12847218] [2024-01-31 16:03:58,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:58,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:59,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:59,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:59,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12847218] [2024-01-31 16:03:59,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12847218] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:59,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:59,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:03:59,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193376875] [2024-01-31 16:03:59,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:59,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:03:59,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:59,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:03:59,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:03:59,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:03:59,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 94 transitions, 675 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) [2024-01-31 16:03:59,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:59,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:03:59,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:59,599 INFO L124 PetriNetUnfolderBase]: 1274/2680 cut-off events. [2024-01-31 16:03:59,599 INFO L125 PetriNetUnfolderBase]: For 5706/5715 co-relation queries the response was YES. [2024-01-31 16:03:59,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7526 conditions, 2680 events. 1274/2680 cut-off events. For 5706/5715 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 19337 event pairs, 782 based on Foata normal form. 32/2357 useless extension candidates. Maximal degree in co-relation 7485. Up to 1902 conditions per place. [2024-01-31 16:03:59,612 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 73 selfloop transitions, 22 changer transitions 0/120 dead transitions. [2024-01-31 16:03:59,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 120 transitions, 953 flow [2024-01-31 16:03:59,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:03:59,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:03:59,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 256 transitions. [2024-01-31 16:03:59,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5844748858447488 [2024-01-31 16:03:59,614 INFO L175 Difference]: Start difference. First operand has 115 places, 94 transitions, 675 flow. Second operand 6 states and 256 transitions. [2024-01-31 16:03:59,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 120 transitions, 953 flow [2024-01-31 16:03:59,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 120 transitions, 917 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 16:03:59,622 INFO L231 Difference]: Finished difference. Result has 118 places, 98 transitions, 726 flow [2024-01-31 16:03:59,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=639, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=726, PETRI_PLACES=118, PETRI_TRANSITIONS=98} [2024-01-31 16:03:59,622 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 41 predicate places. [2024-01-31 16:03:59,623 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 98 transitions, 726 flow [2024-01-31 16:03:59,623 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) [2024-01-31 16:03:59,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:59,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:59,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-01-31 16:03:59,623 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:59,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:59,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1341863663, now seen corresponding path program 2 times [2024-01-31 16:03:59,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:59,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446054581] [2024-01-31 16:03:59,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:59,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:59,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:59,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:59,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446054581] [2024-01-31 16:03:59,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446054581] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:59,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:59,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:03:59,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77270017] [2024-01-31 16:03:59,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:59,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:03:59,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:59,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:03:59,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:03:59,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:03:59,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 98 transitions, 726 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) [2024-01-31 16:03:59,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:59,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:03:59,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:00,200 INFO L124 PetriNetUnfolderBase]: 1314/2750 cut-off events. [2024-01-31 16:04:00,200 INFO L125 PetriNetUnfolderBase]: For 7194/7208 co-relation queries the response was YES. [2024-01-31 16:04:00,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8108 conditions, 2750 events. 1314/2750 cut-off events. For 7194/7208 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 19802 event pairs, 786 based on Foata normal form. 19/2464 useless extension candidates. Maximal degree in co-relation 8065. Up to 1920 conditions per place. [2024-01-31 16:04:00,226 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 71 selfloop transitions, 24 changer transitions 0/120 dead transitions. [2024-01-31 16:04:00,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 120 transitions, 1000 flow [2024-01-31 16:04:00,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:04:00,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:04:00,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 219 transitions. [2024-01-31 16:04:00,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-01-31 16:04:00,228 INFO L175 Difference]: Start difference. First operand has 118 places, 98 transitions, 726 flow. Second operand 5 states and 219 transitions. [2024-01-31 16:04:00,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 120 transitions, 1000 flow [2024-01-31 16:04:00,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 120 transitions, 985 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-01-31 16:04:00,244 INFO L231 Difference]: Finished difference. Result has 121 places, 100 transitions, 783 flow [2024-01-31 16:04:00,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=783, PETRI_PLACES=121, PETRI_TRANSITIONS=100} [2024-01-31 16:04:00,245 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 44 predicate places. [2024-01-31 16:04:00,245 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 100 transitions, 783 flow [2024-01-31 16:04:00,246 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) [2024-01-31 16:04:00,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:00,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:00,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-01-31 16:04:00,246 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:00,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:00,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1753253217, now seen corresponding path program 3 times [2024-01-31 16:04:00,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:00,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508216852] [2024-01-31 16:04:00,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:00,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:00,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:00,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:00,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:00,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508216852] [2024-01-31 16:04:00,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508216852] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:00,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:00,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:04:00,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205723867] [2024-01-31 16:04:00,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:00,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:00,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:00,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:00,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:00,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:04:00,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 100 transitions, 783 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) [2024-01-31 16:04:00,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:00,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:04:00,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:01,004 INFO L124 PetriNetUnfolderBase]: 1298/2726 cut-off events. [2024-01-31 16:04:01,004 INFO L125 PetriNetUnfolderBase]: For 7872/7886 co-relation queries the response was YES. [2024-01-31 16:04:01,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8180 conditions, 2726 events. 1298/2726 cut-off events. For 7872/7886 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 19677 event pairs, 800 based on Foata normal form. 19/2440 useless extension candidates. Maximal degree in co-relation 8135. Up to 2018 conditions per place. [2024-01-31 16:04:01,024 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 68 selfloop transitions, 20 changer transitions 0/113 dead transitions. [2024-01-31 16:04:01,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 113 transitions, 995 flow [2024-01-31 16:04:01,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:04:01,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:04:01,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 179 transitions. [2024-01-31 16:04:01,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.613013698630137 [2024-01-31 16:04:01,026 INFO L175 Difference]: Start difference. First operand has 121 places, 100 transitions, 783 flow. Second operand 4 states and 179 transitions. [2024-01-31 16:04:01,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 113 transitions, 995 flow [2024-01-31 16:04:01,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 113 transitions, 968 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-01-31 16:04:01,039 INFO L231 Difference]: Finished difference. Result has 123 places, 100 transitions, 815 flow [2024-01-31 16:04:01,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=815, PETRI_PLACES=123, PETRI_TRANSITIONS=100} [2024-01-31 16:04:01,039 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 46 predicate places. [2024-01-31 16:04:01,040 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 100 transitions, 815 flow [2024-01-31 16:04:01,040 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) [2024-01-31 16:04:01,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:01,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:01,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-01-31 16:04:01,040 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:01,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:01,041 INFO L85 PathProgramCache]: Analyzing trace with hash -511600905, now seen corresponding path program 2 times [2024-01-31 16:04:01,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:01,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794530506] [2024-01-31 16:04:01,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:01,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:01,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:01,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:01,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:01,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794530506] [2024-01-31 16:04:01,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794530506] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:01,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:01,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:01,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185447036] [2024-01-31 16:04:01,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:01,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:01,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:01,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:01,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:01,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:01,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 100 transitions, 815 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) [2024-01-31 16:04:01,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:01,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:01,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:01,818 INFO L124 PetriNetUnfolderBase]: 1769/3567 cut-off events. [2024-01-31 16:04:01,818 INFO L125 PetriNetUnfolderBase]: For 10224/10235 co-relation queries the response was YES. [2024-01-31 16:04:01,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10636 conditions, 3567 events. 1769/3567 cut-off events. For 10224/10235 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 25413 event pairs, 762 based on Foata normal form. 23/3228 useless extension candidates. Maximal degree in co-relation 10590. Up to 2468 conditions per place. [2024-01-31 16:04:01,837 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 86 selfloop transitions, 36 changer transitions 0/138 dead transitions. [2024-01-31 16:04:01,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 138 transitions, 1200 flow [2024-01-31 16:04:01,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:01,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:01,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 237 transitions. [2024-01-31 16:04:01,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4637964774951076 [2024-01-31 16:04:01,839 INFO L175 Difference]: Start difference. First operand has 123 places, 100 transitions, 815 flow. Second operand 7 states and 237 transitions. [2024-01-31 16:04:01,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 138 transitions, 1200 flow [2024-01-31 16:04:01,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 138 transitions, 1160 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-31 16:04:01,860 INFO L231 Difference]: Finished difference. Result has 128 places, 105 transitions, 906 flow [2024-01-31 16:04:01,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=775, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=906, PETRI_PLACES=128, PETRI_TRANSITIONS=105} [2024-01-31 16:04:01,861 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 51 predicate places. [2024-01-31 16:04:01,861 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 105 transitions, 906 flow [2024-01-31 16:04:01,861 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) [2024-01-31 16:04:01,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:01,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:01,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-01-31 16:04:01,862 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:01,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:01,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1773746411, now seen corresponding path program 1 times [2024-01-31 16:04:01,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:01,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195952278] [2024-01-31 16:04:01,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:01,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:02,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:02,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:02,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195952278] [2024-01-31 16:04:02,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195952278] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:02,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:02,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:02,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176963105] [2024-01-31 16:04:02,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:02,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:02,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:02,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:02,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:02,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:02,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 105 transitions, 906 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) [2024-01-31 16:04:02,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:02,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:02,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:02,613 INFO L124 PetriNetUnfolderBase]: 1868/3745 cut-off events. [2024-01-31 16:04:02,613 INFO L125 PetriNetUnfolderBase]: For 11821/11902 co-relation queries the response was YES. [2024-01-31 16:04:02,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11587 conditions, 3745 events. 1868/3745 cut-off events. For 11821/11902 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 26501 event pairs, 841 based on Foata normal form. 44/3392 useless extension candidates. Maximal degree in co-relation 11539. Up to 2572 conditions per place. [2024-01-31 16:04:02,640 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 80 selfloop transitions, 36 changer transitions 0/134 dead transitions. [2024-01-31 16:04:02,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 134 transitions, 1219 flow [2024-01-31 16:04:02,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:02,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:02,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 230 transitions. [2024-01-31 16:04:02,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4500978473581213 [2024-01-31 16:04:02,644 INFO L175 Difference]: Start difference. First operand has 128 places, 105 transitions, 906 flow. Second operand 7 states and 230 transitions. [2024-01-31 16:04:02,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 134 transitions, 1219 flow [2024-01-31 16:04:02,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 134 transitions, 1169 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-01-31 16:04:02,667 INFO L231 Difference]: Finished difference. Result has 131 places, 105 transitions, 937 flow [2024-01-31 16:04:02,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=937, PETRI_PLACES=131, PETRI_TRANSITIONS=105} [2024-01-31 16:04:02,668 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 54 predicate places. [2024-01-31 16:04:02,668 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 105 transitions, 937 flow [2024-01-31 16:04:02,668 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) [2024-01-31 16:04:02,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:02,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:02,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-01-31 16:04:02,668 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:02,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:02,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1003816937, now seen corresponding path program 3 times [2024-01-31 16:04:02,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:02,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594959523] [2024-01-31 16:04:02,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:02,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:02,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:02,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:02,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594959523] [2024-01-31 16:04:02,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594959523] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:02,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:02,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:02,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913733750] [2024-01-31 16:04:02,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:02,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:02,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:02,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:02,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:03,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:03,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 105 transitions, 937 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) [2024-01-31 16:04:03,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:03,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:03,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:03,498 INFO L124 PetriNetUnfolderBase]: 1709/3471 cut-off events. [2024-01-31 16:04:03,499 INFO L125 PetriNetUnfolderBase]: For 11352/11363 co-relation queries the response was YES. [2024-01-31 16:04:03,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10791 conditions, 3471 events. 1709/3471 cut-off events. For 11352/11363 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 24654 event pairs, 1054 based on Foata normal form. 35/3144 useless extension candidates. Maximal degree in co-relation 10742. Up to 2633 conditions per place. [2024-01-31 16:04:03,520 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 86 selfloop transitions, 25 changer transitions 0/127 dead transitions. [2024-01-31 16:04:03,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 127 transitions, 1228 flow [2024-01-31 16:04:03,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:03,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:03,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 224 transitions. [2024-01-31 16:04:03,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4383561643835616 [2024-01-31 16:04:03,522 INFO L175 Difference]: Start difference. First operand has 131 places, 105 transitions, 937 flow. Second operand 7 states and 224 transitions. [2024-01-31 16:04:03,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 127 transitions, 1228 flow [2024-01-31 16:04:03,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 127 transitions, 1156 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-31 16:04:03,539 INFO L231 Difference]: Finished difference. Result has 132 places, 105 transitions, 923 flow [2024-01-31 16:04:03,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=865, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=923, PETRI_PLACES=132, PETRI_TRANSITIONS=105} [2024-01-31 16:04:03,539 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 55 predicate places. [2024-01-31 16:04:03,539 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 105 transitions, 923 flow [2024-01-31 16:04:03,540 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) [2024-01-31 16:04:03,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:03,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:03,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-01-31 16:04:03,540 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:03,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:03,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1289748371, now seen corresponding path program 2 times [2024-01-31 16:04:03,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:03,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490255800] [2024-01-31 16:04:03,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:03,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:03,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:03,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:03,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:03,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490255800] [2024-01-31 16:04:03,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490255800] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:03,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:03,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:03,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829832968] [2024-01-31 16:04:03,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:03,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:03,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:03,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:03,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:03,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:03,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 105 transitions, 923 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) [2024-01-31 16:04:03,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:03,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:03,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:04,332 INFO L124 PetriNetUnfolderBase]: 1788/3593 cut-off events. [2024-01-31 16:04:04,332 INFO L125 PetriNetUnfolderBase]: For 11996/12071 co-relation queries the response was YES. [2024-01-31 16:04:04,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11173 conditions, 3593 events. 1788/3593 cut-off events. For 11996/12071 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 25439 event pairs, 1012 based on Foata normal form. 47/3240 useless extension candidates. Maximal degree in co-relation 11123. Up to 2746 conditions per place. [2024-01-31 16:04:04,356 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 84 selfloop transitions, 25 changer transitions 0/127 dead transitions. [2024-01-31 16:04:04,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 127 transitions, 1192 flow [2024-01-31 16:04:04,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:04,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:04,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 222 transitions. [2024-01-31 16:04:04,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4344422700587084 [2024-01-31 16:04:04,358 INFO L175 Difference]: Start difference. First operand has 132 places, 105 transitions, 923 flow. Second operand 7 states and 222 transitions. [2024-01-31 16:04:04,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 127 transitions, 1192 flow [2024-01-31 16:04:04,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 127 transitions, 1134 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-01-31 16:04:04,376 INFO L231 Difference]: Finished difference. Result has 133 places, 105 transitions, 925 flow [2024-01-31 16:04:04,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=865, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=925, PETRI_PLACES=133, PETRI_TRANSITIONS=105} [2024-01-31 16:04:04,377 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 56 predicate places. [2024-01-31 16:04:04,377 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 105 transitions, 925 flow [2024-01-31 16:04:04,377 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) [2024-01-31 16:04:04,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:04,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:04,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-01-31 16:04:04,378 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:04,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:04,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1652833131, now seen corresponding path program 1 times [2024-01-31 16:04:04,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:04,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827278544] [2024-01-31 16:04:04,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:04,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:04,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:04,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:04,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:04,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827278544] [2024-01-31 16:04:04,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827278544] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:04,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:04,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:04,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630258089] [2024-01-31 16:04:04,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:04,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:04,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:04,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:04,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:04,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:04,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 105 transitions, 925 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) [2024-01-31 16:04:04,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:04,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:04,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:05,184 INFO L124 PetriNetUnfolderBase]: 1768/3553 cut-off events. [2024-01-31 16:04:05,185 INFO L125 PetriNetUnfolderBase]: For 12354/12428 co-relation queries the response was YES. [2024-01-31 16:04:05,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11239 conditions, 3553 events. 1768/3553 cut-off events. For 12354/12428 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 25121 event pairs, 1017 based on Foata normal form. 53/3199 useless extension candidates. Maximal degree in co-relation 11188. Up to 2492 conditions per place. [2024-01-31 16:04:05,203 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 89 selfloop transitions, 27 changer transitions 0/134 dead transitions. [2024-01-31 16:04:05,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 134 transitions, 1232 flow [2024-01-31 16:04:05,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:05,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:05,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 231 transitions. [2024-01-31 16:04:05,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520547945205479 [2024-01-31 16:04:05,205 INFO L175 Difference]: Start difference. First operand has 133 places, 105 transitions, 925 flow. Second operand 7 states and 231 transitions. [2024-01-31 16:04:05,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 134 transitions, 1232 flow [2024-01-31 16:04:05,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 134 transitions, 1180 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-01-31 16:04:05,222 INFO L231 Difference]: Finished difference. Result has 134 places, 105 transitions, 933 flow [2024-01-31 16:04:05,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=873, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=933, PETRI_PLACES=134, PETRI_TRANSITIONS=105} [2024-01-31 16:04:05,223 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 57 predicate places. [2024-01-31 16:04:05,223 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 105 transitions, 933 flow [2024-01-31 16:04:05,223 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) [2024-01-31 16:04:05,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:05,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:05,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-01-31 16:04:05,224 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:05,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:05,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1003792163, now seen corresponding path program 1 times [2024-01-31 16:04:05,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:05,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62009143] [2024-01-31 16:04:05,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:05,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:05,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:05,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:05,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:05,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62009143] [2024-01-31 16:04:05,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62009143] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:05,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:05,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:05,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983350522] [2024-01-31 16:04:05,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:05,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:05,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:05,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:05,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:05,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:05,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 105 transitions, 933 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) [2024-01-31 16:04:05,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:05,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:05,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:06,048 INFO L124 PetriNetUnfolderBase]: 1689/3442 cut-off events. [2024-01-31 16:04:06,048 INFO L125 PetriNetUnfolderBase]: For 12025/12036 co-relation queries the response was YES. [2024-01-31 16:04:06,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10993 conditions, 3442 events. 1689/3442 cut-off events. For 12025/12036 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 24453 event pairs, 1034 based on Foata normal form. 17/3097 useless extension candidates. Maximal degree in co-relation 10941. Up to 2392 conditions per place. [2024-01-31 16:04:06,075 INFO L140 encePairwiseOnDemand]: 60/73 looper letters, 95 selfloop transitions, 32 changer transitions 0/143 dead transitions. [2024-01-31 16:04:06,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 143 transitions, 1309 flow [2024-01-31 16:04:06,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:06,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:06,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 242 transitions. [2024-01-31 16:04:06,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4735812133072407 [2024-01-31 16:04:06,076 INFO L175 Difference]: Start difference. First operand has 134 places, 105 transitions, 933 flow. Second operand 7 states and 242 transitions. [2024-01-31 16:04:06,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 143 transitions, 1309 flow [2024-01-31 16:04:06,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 143 transitions, 1251 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-31 16:04:06,098 INFO L231 Difference]: Finished difference. Result has 136 places, 110 transitions, 995 flow [2024-01-31 16:04:06,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=879, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=995, PETRI_PLACES=136, PETRI_TRANSITIONS=110} [2024-01-31 16:04:06,099 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 59 predicate places. [2024-01-31 16:04:06,099 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 110 transitions, 995 flow [2024-01-31 16:04:06,099 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) [2024-01-31 16:04:06,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:06,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:06,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-01-31 16:04:06,100 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:06,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:06,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1501477121, now seen corresponding path program 2 times [2024-01-31 16:04:06,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:06,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703763076] [2024-01-31 16:04:06,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:06,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:06,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:06,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:06,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:06,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703763076] [2024-01-31 16:04:06,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703763076] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:06,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:06,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:06,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141589033] [2024-01-31 16:04:06,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:06,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:06,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:06,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:06,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:06,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:06,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 110 transitions, 995 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) [2024-01-31 16:04:06,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:06,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:06,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:07,003 INFO L124 PetriNetUnfolderBase]: 2045/4031 cut-off events. [2024-01-31 16:04:07,003 INFO L125 PetriNetUnfolderBase]: For 15293/15458 co-relation queries the response was YES. [2024-01-31 16:04:07,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13805 conditions, 4031 events. 2045/4031 cut-off events. For 15293/15458 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 28345 event pairs, 1065 based on Foata normal form. 50/3656 useless extension candidates. Maximal degree in co-relation 13751. Up to 2591 conditions per place. [2024-01-31 16:04:07,053 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 100 selfloop transitions, 37 changer transitions 0/157 dead transitions. [2024-01-31 16:04:07,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 157 transitions, 1574 flow [2024-01-31 16:04:07,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:07,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:07,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 236 transitions. [2024-01-31 16:04:07,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.461839530332681 [2024-01-31 16:04:07,055 INFO L175 Difference]: Start difference. First operand has 136 places, 110 transitions, 995 flow. Second operand 7 states and 236 transitions. [2024-01-31 16:04:07,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 157 transitions, 1574 flow [2024-01-31 16:04:07,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 157 transitions, 1500 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-31 16:04:07,099 INFO L231 Difference]: Finished difference. Result has 140 places, 123 transitions, 1211 flow [2024-01-31 16:04:07,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=943, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1211, PETRI_PLACES=140, PETRI_TRANSITIONS=123} [2024-01-31 16:04:07,099 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 63 predicate places. [2024-01-31 16:04:07,099 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 123 transitions, 1211 flow [2024-01-31 16:04:07,100 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) [2024-01-31 16:04:07,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:07,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:07,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-01-31 16:04:07,100 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:07,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:07,101 INFO L85 PathProgramCache]: Analyzing trace with hash -227702687, now seen corresponding path program 2 times [2024-01-31 16:04:07,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:07,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961925018] [2024-01-31 16:04:07,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:07,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:07,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:07,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:07,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:07,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961925018] [2024-01-31 16:04:07,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961925018] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:07,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:07,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:07,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820939465] [2024-01-31 16:04:07,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:07,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:07,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:07,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:07,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:07,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:07,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 123 transitions, 1211 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) [2024-01-31 16:04:07,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:07,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:07,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:07,900 INFO L124 PetriNetUnfolderBase]: 1840/3694 cut-off events. [2024-01-31 16:04:07,900 INFO L125 PetriNetUnfolderBase]: For 14429/14449 co-relation queries the response was YES. [2024-01-31 16:04:07,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12977 conditions, 3694 events. 1840/3694 cut-off events. For 14429/14449 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 26147 event pairs, 1041 based on Foata normal form. 29/3357 useless extension candidates. Maximal degree in co-relation 12920. Up to 2458 conditions per place. [2024-01-31 16:04:07,928 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 92 selfloop transitions, 41 changer transitions 0/149 dead transitions. [2024-01-31 16:04:07,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 149 transitions, 1572 flow [2024-01-31 16:04:07,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:07,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:07,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 230 transitions. [2024-01-31 16:04:07,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4500978473581213 [2024-01-31 16:04:07,930 INFO L175 Difference]: Start difference. First operand has 140 places, 123 transitions, 1211 flow. Second operand 7 states and 230 transitions. [2024-01-31 16:04:07,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 149 transitions, 1572 flow [2024-01-31 16:04:07,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 149 transitions, 1538 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-01-31 16:04:07,962 INFO L231 Difference]: Finished difference. Result has 145 places, 123 transitions, 1271 flow [2024-01-31 16:04:07,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1177, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1271, PETRI_PLACES=145, PETRI_TRANSITIONS=123} [2024-01-31 16:04:07,963 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 68 predicate places. [2024-01-31 16:04:07,963 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 123 transitions, 1271 flow [2024-01-31 16:04:07,963 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) [2024-01-31 16:04:07,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:07,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:07,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-01-31 16:04:07,964 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:07,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:07,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1753198359, now seen corresponding path program 3 times [2024-01-31 16:04:07,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:07,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261191821] [2024-01-31 16:04:07,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:07,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:07,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:08,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:08,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:08,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261191821] [2024-01-31 16:04:08,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261191821] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:08,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:08,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:08,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941353622] [2024-01-31 16:04:08,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:08,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:08,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:08,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:08,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:08,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:08,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 123 transitions, 1271 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) [2024-01-31 16:04:08,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:08,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:08,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:08,884 INFO L124 PetriNetUnfolderBase]: 1953/3873 cut-off events. [2024-01-31 16:04:08,884 INFO L125 PetriNetUnfolderBase]: For 17725/17882 co-relation queries the response was YES. [2024-01-31 16:04:08,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13783 conditions, 3873 events. 1953/3873 cut-off events. For 17725/17882 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 27296 event pairs, 1078 based on Foata normal form. 63/3508 useless extension candidates. Maximal degree in co-relation 13725. Up to 2950 conditions per place. [2024-01-31 16:04:08,913 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 108 selfloop transitions, 19 changer transitions 0/147 dead transitions. [2024-01-31 16:04:08,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 147 transitions, 1606 flow [2024-01-31 16:04:08,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:08,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:08,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 222 transitions. [2024-01-31 16:04:08,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4344422700587084 [2024-01-31 16:04:08,914 INFO L175 Difference]: Start difference. First operand has 145 places, 123 transitions, 1271 flow. Second operand 7 states and 222 transitions. [2024-01-31 16:04:08,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 147 transitions, 1606 flow [2024-01-31 16:04:08,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 147 transitions, 1534 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 16:04:08,947 INFO L231 Difference]: Finished difference. Result has 149 places, 124 transitions, 1256 flow [2024-01-31 16:04:08,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1199, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1256, PETRI_PLACES=149, PETRI_TRANSITIONS=124} [2024-01-31 16:04:08,947 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 72 predicate places. [2024-01-31 16:04:08,947 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 124 transitions, 1256 flow [2024-01-31 16:04:08,948 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) [2024-01-31 16:04:08,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:08,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:08,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-01-31 16:04:08,948 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:08,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:08,949 INFO L85 PathProgramCache]: Analyzing trace with hash -249829455, now seen corresponding path program 3 times [2024-01-31 16:04:08,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:08,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280780282] [2024-01-31 16:04:08,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:08,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:08,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:09,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:09,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:09,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280780282] [2024-01-31 16:04:09,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280780282] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:09,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:09,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:09,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097571236] [2024-01-31 16:04:09,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:09,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:09,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:09,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:09,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:09,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:09,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 124 transitions, 1256 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) [2024-01-31 16:04:09,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:09,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:09,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:09,834 INFO L124 PetriNetUnfolderBase]: 2020/3981 cut-off events. [2024-01-31 16:04:09,834 INFO L125 PetriNetUnfolderBase]: For 17394/17571 co-relation queries the response was YES. [2024-01-31 16:04:09,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14194 conditions, 3981 events. 2020/3981 cut-off events. For 17394/17571 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 27908 event pairs, 1018 based on Foata normal form. 60/3611 useless extension candidates. Maximal degree in co-relation 14134. Up to 3021 conditions per place. [2024-01-31 16:04:09,869 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 101 selfloop transitions, 33 changer transitions 0/154 dead transitions. [2024-01-31 16:04:09,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 154 transitions, 1615 flow [2024-01-31 16:04:09,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:04:09,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:04:09,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 250 transitions. [2024-01-31 16:04:09,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4280821917808219 [2024-01-31 16:04:09,871 INFO L175 Difference]: Start difference. First operand has 149 places, 124 transitions, 1256 flow. Second operand 8 states and 250 transitions. [2024-01-31 16:04:09,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 154 transitions, 1615 flow [2024-01-31 16:04:09,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 154 transitions, 1556 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-01-31 16:04:09,906 INFO L231 Difference]: Finished difference. Result has 152 places, 128 transitions, 1315 flow [2024-01-31 16:04:09,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1197, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1315, PETRI_PLACES=152, PETRI_TRANSITIONS=128} [2024-01-31 16:04:09,912 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 75 predicate places. [2024-01-31 16:04:09,912 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 128 transitions, 1315 flow [2024-01-31 16:04:09,913 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) [2024-01-31 16:04:09,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:09,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:09,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-01-31 16:04:09,913 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:09,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:09,914 INFO L85 PathProgramCache]: Analyzing trace with hash 422044713, now seen corresponding path program 3 times [2024-01-31 16:04:09,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:09,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579008527] [2024-01-31 16:04:09,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:09,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:09,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:10,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:10,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:10,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579008527] [2024-01-31 16:04:10,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579008527] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:10,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:10,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:10,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331038636] [2024-01-31 16:04:10,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:10,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:10,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:10,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:10,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:10,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:10,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 128 transitions, 1315 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) [2024-01-31 16:04:10,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:10,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:10,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:10,797 INFO L124 PetriNetUnfolderBase]: 1755/3577 cut-off events. [2024-01-31 16:04:10,797 INFO L125 PetriNetUnfolderBase]: For 15811/15828 co-relation queries the response was YES. [2024-01-31 16:04:10,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12768 conditions, 3577 events. 1755/3577 cut-off events. For 15811/15828 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 25400 event pairs, 1002 based on Foata normal form. 44/3256 useless extension candidates. Maximal degree in co-relation 12708. Up to 2651 conditions per place. [2024-01-31 16:04:10,863 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 108 selfloop transitions, 24 changer transitions 0/148 dead transitions. [2024-01-31 16:04:10,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 148 transitions, 1644 flow [2024-01-31 16:04:10,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:10,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:10,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 218 transitions. [2024-01-31 16:04:10,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42661448140900193 [2024-01-31 16:04:10,877 INFO L175 Difference]: Start difference. First operand has 152 places, 128 transitions, 1315 flow. Second operand 7 states and 218 transitions. [2024-01-31 16:04:10,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 148 transitions, 1644 flow [2024-01-31 16:04:10,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 148 transitions, 1569 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-01-31 16:04:10,915 INFO L231 Difference]: Finished difference. Result has 152 places, 128 transitions, 1302 flow [2024-01-31 16:04:10,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1240, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1302, PETRI_PLACES=152, PETRI_TRANSITIONS=128} [2024-01-31 16:04:10,916 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 75 predicate places. [2024-01-31 16:04:10,916 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 128 transitions, 1302 flow [2024-01-31 16:04:10,916 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) [2024-01-31 16:04:10,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:10,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:10,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-01-31 16:04:10,916 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:10,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:10,917 INFO L85 PathProgramCache]: Analyzing trace with hash -137728411, now seen corresponding path program 4 times [2024-01-31 16:04:10,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:10,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908409167] [2024-01-31 16:04:10,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:10,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:10,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:11,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:11,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:11,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908409167] [2024-01-31 16:04:11,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908409167] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:11,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:11,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:11,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512855160] [2024-01-31 16:04:11,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:11,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:11,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:11,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:11,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:11,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:11,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 128 transitions, 1302 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) [2024-01-31 16:04:11,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:11,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:11,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:11,777 INFO L124 PetriNetUnfolderBase]: 1971/3903 cut-off events. [2024-01-31 16:04:11,778 INFO L125 PetriNetUnfolderBase]: For 18626/18810 co-relation queries the response was YES. [2024-01-31 16:04:11,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14260 conditions, 3903 events. 1971/3903 cut-off events. For 18626/18810 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 27543 event pairs, 1045 based on Foata normal form. 66/3533 useless extension candidates. Maximal degree in co-relation 14201. Up to 2951 conditions per place. [2024-01-31 16:04:11,810 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 108 selfloop transitions, 25 changer transitions 0/153 dead transitions. [2024-01-31 16:04:11,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 153 transitions, 1702 flow [2024-01-31 16:04:11,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:11,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:11,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 195 transitions. [2024-01-31 16:04:11,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4452054794520548 [2024-01-31 16:04:11,811 INFO L175 Difference]: Start difference. First operand has 152 places, 128 transitions, 1302 flow. Second operand 6 states and 195 transitions. [2024-01-31 16:04:11,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 153 transitions, 1702 flow [2024-01-31 16:04:11,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 153 transitions, 1589 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-01-31 16:04:11,849 INFO L231 Difference]: Finished difference. Result has 150 places, 134 transitions, 1339 flow [2024-01-31 16:04:11,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1205, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1339, PETRI_PLACES=150, PETRI_TRANSITIONS=134} [2024-01-31 16:04:11,849 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 73 predicate places. [2024-01-31 16:04:11,849 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 134 transitions, 1339 flow [2024-01-31 16:04:11,849 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) [2024-01-31 16:04:11,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:11,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:11,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-01-31 16:04:11,850 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:11,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:11,850 INFO L85 PathProgramCache]: Analyzing trace with hash 517351979, now seen corresponding path program 5 times [2024-01-31 16:04:11,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:11,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343647989] [2024-01-31 16:04:11,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:11,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:11,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:12,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:12,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:12,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343647989] [2024-01-31 16:04:12,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343647989] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:12,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:12,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:12,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276817779] [2024-01-31 16:04:12,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:12,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:12,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:12,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:12,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:12,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:12,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 134 transitions, 1339 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) [2024-01-31 16:04:12,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:12,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:12,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:12,735 INFO L124 PetriNetUnfolderBase]: 1973/3902 cut-off events. [2024-01-31 16:04:12,735 INFO L125 PetriNetUnfolderBase]: For 17508/17697 co-relation queries the response was YES. [2024-01-31 16:04:12,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14303 conditions, 3902 events. 1973/3902 cut-off events. For 17508/17697 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 27444 event pairs, 1002 based on Foata normal form. 51/3511 useless extension candidates. Maximal degree in co-relation 14244. Up to 2667 conditions per place. [2024-01-31 16:04:12,769 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 88 selfloop transitions, 48 changer transitions 0/156 dead transitions. [2024-01-31 16:04:12,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 156 transitions, 1680 flow [2024-01-31 16:04:12,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:12,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:12,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 201 transitions. [2024-01-31 16:04:12,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4589041095890411 [2024-01-31 16:04:12,770 INFO L175 Difference]: Start difference. First operand has 150 places, 134 transitions, 1339 flow. Second operand 6 states and 201 transitions. [2024-01-31 16:04:12,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 156 transitions, 1680 flow [2024-01-31 16:04:12,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 156 transitions, 1642 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-01-31 16:04:12,806 INFO L231 Difference]: Finished difference. Result has 153 places, 134 transitions, 1413 flow [2024-01-31 16:04:12,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1303, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1413, PETRI_PLACES=153, PETRI_TRANSITIONS=134} [2024-01-31 16:04:12,807 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 76 predicate places. [2024-01-31 16:04:12,807 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 134 transitions, 1413 flow [2024-01-31 16:04:12,807 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) [2024-01-31 16:04:12,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:12,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:12,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-01-31 16:04:12,808 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:12,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:12,808 INFO L85 PathProgramCache]: Analyzing trace with hash 544965539, now seen corresponding path program 6 times [2024-01-31 16:04:12,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:12,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792240623] [2024-01-31 16:04:12,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:12,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:12,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:13,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:13,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:13,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792240623] [2024-01-31 16:04:13,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792240623] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:13,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:13,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:13,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520306573] [2024-01-31 16:04:13,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:13,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:13,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:13,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:13,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:13,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:13,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 134 transitions, 1413 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) [2024-01-31 16:04:13,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:13,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:13,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:13,545 INFO L124 PetriNetUnfolderBase]: 1948/3862 cut-off events. [2024-01-31 16:04:13,545 INFO L125 PetriNetUnfolderBase]: For 18954/19139 co-relation queries the response was YES. [2024-01-31 16:04:13,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14251 conditions, 3862 events. 1948/3862 cut-off events. For 18954/19139 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 27145 event pairs, 999 based on Foata normal form. 54/3474 useless extension candidates. Maximal degree in co-relation 14192. Up to 2754 conditions per place. [2024-01-31 16:04:13,577 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 89 selfloop transitions, 42 changer transitions 0/151 dead transitions. [2024-01-31 16:04:13,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 151 transitions, 1722 flow [2024-01-31 16:04:13,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:04:13,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:04:13,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 173 transitions. [2024-01-31 16:04:13,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.473972602739726 [2024-01-31 16:04:13,579 INFO L175 Difference]: Start difference. First operand has 153 places, 134 transitions, 1413 flow. Second operand 5 states and 173 transitions. [2024-01-31 16:04:13,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 151 transitions, 1722 flow [2024-01-31 16:04:13,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 151 transitions, 1610 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-01-31 16:04:13,615 INFO L231 Difference]: Finished difference. Result has 151 places, 134 transitions, 1421 flow [2024-01-31 16:04:13,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1301, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1421, PETRI_PLACES=151, PETRI_TRANSITIONS=134} [2024-01-31 16:04:13,615 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 74 predicate places. [2024-01-31 16:04:13,615 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 134 transitions, 1421 flow [2024-01-31 16:04:13,616 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) [2024-01-31 16:04:13,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:13,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:13,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-01-31 16:04:13,616 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:13,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:13,617 INFO L85 PathProgramCache]: Analyzing trace with hash -252802685, now seen corresponding path program 4 times [2024-01-31 16:04:13,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:13,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624552955] [2024-01-31 16:04:13,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:13,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:13,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:13,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:13,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:13,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624552955] [2024-01-31 16:04:13,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624552955] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:13,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:13,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:13,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826486554] [2024-01-31 16:04:13,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:13,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:13,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:13,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:13,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:13,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:13,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 134 transitions, 1421 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) [2024-01-31 16:04:13,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:13,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:13,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:14,395 INFO L124 PetriNetUnfolderBase]: 1928/3865 cut-off events. [2024-01-31 16:04:14,396 INFO L125 PetriNetUnfolderBase]: For 18824/18999 co-relation queries the response was YES. [2024-01-31 16:04:14,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14245 conditions, 3865 events. 1928/3865 cut-off events. For 18824/18999 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 27199 event pairs, 781 based on Foata normal form. 42/3483 useless extension candidates. Maximal degree in co-relation 14187. Up to 2750 conditions per place. [2024-01-31 16:04:14,437 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 91 selfloop transitions, 44 changer transitions 0/155 dead transitions. [2024-01-31 16:04:14,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 155 transitions, 1742 flow [2024-01-31 16:04:14,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:14,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:14,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 199 transitions. [2024-01-31 16:04:14,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.454337899543379 [2024-01-31 16:04:14,439 INFO L175 Difference]: Start difference. First operand has 151 places, 134 transitions, 1421 flow. Second operand 6 states and 199 transitions. [2024-01-31 16:04:14,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 155 transitions, 1742 flow [2024-01-31 16:04:14,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 155 transitions, 1652 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-01-31 16:04:14,481 INFO L231 Difference]: Finished difference. Result has 153 places, 134 transitions, 1451 flow [2024-01-31 16:04:14,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1331, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1451, PETRI_PLACES=153, PETRI_TRANSITIONS=134} [2024-01-31 16:04:14,481 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 76 predicate places. [2024-01-31 16:04:14,482 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 134 transitions, 1451 flow [2024-01-31 16:04:14,482 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) [2024-01-31 16:04:14,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:14,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:14,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-01-31 16:04:14,482 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:14,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:14,483 INFO L85 PathProgramCache]: Analyzing trace with hash -172209662, now seen corresponding path program 1 times [2024-01-31 16:04:14,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:14,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645527319] [2024-01-31 16:04:14,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:14,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:14,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:14,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:14,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:14,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645527319] [2024-01-31 16:04:14,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645527319] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:14,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:14,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:04:14,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846192852] [2024-01-31 16:04:14,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:14,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:14,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:14,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:14,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:14,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:04:14,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 134 transitions, 1451 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) [2024-01-31 16:04:14,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:14,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:04:14,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:15,054 INFO L124 PetriNetUnfolderBase]: 1563/3195 cut-off events. [2024-01-31 16:04:15,054 INFO L125 PetriNetUnfolderBase]: For 18148/18226 co-relation queries the response was YES. [2024-01-31 16:04:15,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12264 conditions, 3195 events. 1563/3195 cut-off events. For 18148/18226 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 22695 event pairs, 746 based on Foata normal form. 24/2874 useless extension candidates. Maximal degree in co-relation 12205. Up to 2297 conditions per place. [2024-01-31 16:04:15,090 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 116 selfloop transitions, 30 changer transitions 0/174 dead transitions. [2024-01-31 16:04:15,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 174 transitions, 2118 flow [2024-01-31 16:04:15,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:15,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:15,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 285 transitions. [2024-01-31 16:04:15,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5577299412915852 [2024-01-31 16:04:15,091 INFO L175 Difference]: Start difference. First operand has 153 places, 134 transitions, 1451 flow. Second operand 7 states and 285 transitions. [2024-01-31 16:04:15,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 174 transitions, 2118 flow [2024-01-31 16:04:15,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 174 transitions, 1992 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-01-31 16:04:15,121 INFO L231 Difference]: Finished difference. Result has 158 places, 155 transitions, 1757 flow [2024-01-31 16:04:15,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1349, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1757, PETRI_PLACES=158, PETRI_TRANSITIONS=155} [2024-01-31 16:04:15,122 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 81 predicate places. [2024-01-31 16:04:15,122 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 155 transitions, 1757 flow [2024-01-31 16:04:15,122 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) [2024-01-31 16:04:15,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:15,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:15,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-01-31 16:04:15,122 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:15,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:15,123 INFO L85 PathProgramCache]: Analyzing trace with hash -826908090, now seen corresponding path program 1 times [2024-01-31 16:04:15,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:15,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907031800] [2024-01-31 16:04:15,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:15,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:15,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:15,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:15,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:15,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907031800] [2024-01-31 16:04:15,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907031800] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:15,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:15,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:04:15,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835693065] [2024-01-31 16:04:15,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:15,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:15,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:15,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:15,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:15,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:04:15,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 155 transitions, 1757 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) [2024-01-31 16:04:15,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:15,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:04:15,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:15,678 INFO L124 PetriNetUnfolderBase]: 1293/2719 cut-off events. [2024-01-31 16:04:15,679 INFO L125 PetriNetUnfolderBase]: For 15155/15239 co-relation queries the response was YES. [2024-01-31 16:04:15,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10427 conditions, 2719 events. 1293/2719 cut-off events. For 15155/15239 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 19205 event pairs, 709 based on Foata normal form. 24/2500 useless extension candidates. Maximal degree in co-relation 10364. Up to 1912 conditions per place. [2024-01-31 16:04:15,698 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 134 selfloop transitions, 24 changer transitions 0/186 dead transitions. [2024-01-31 16:04:15,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 186 transitions, 2300 flow [2024-01-31 16:04:15,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:04:15,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:04:15,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 215 transitions. [2024-01-31 16:04:15,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.589041095890411 [2024-01-31 16:04:15,700 INFO L175 Difference]: Start difference. First operand has 158 places, 155 transitions, 1757 flow. Second operand 5 states and 215 transitions. [2024-01-31 16:04:15,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 186 transitions, 2300 flow [2024-01-31 16:04:15,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 186 transitions, 2298 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-01-31 16:04:15,722 INFO L231 Difference]: Finished difference. Result has 164 places, 167 transitions, 1977 flow [2024-01-31 16:04:15,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1755, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1977, PETRI_PLACES=164, PETRI_TRANSITIONS=167} [2024-01-31 16:04:15,723 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 87 predicate places. [2024-01-31 16:04:15,723 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 167 transitions, 1977 flow [2024-01-31 16:04:15,723 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) [2024-01-31 16:04:15,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:15,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:15,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-01-31 16:04:15,723 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:15,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:15,724 INFO L85 PathProgramCache]: Analyzing trace with hash 2129257844, now seen corresponding path program 1 times [2024-01-31 16:04:15,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:15,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764923595] [2024-01-31 16:04:15,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:15,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:15,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:15,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:15,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764923595] [2024-01-31 16:04:15,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764923595] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:15,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:15,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:15,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378651491] [2024-01-31 16:04:15,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:15,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:15,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:15,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:15,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:15,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:04:15,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 167 transitions, 1977 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) [2024-01-31 16:04:15,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:15,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:04:15,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:16,274 INFO L124 PetriNetUnfolderBase]: 1152/2366 cut-off events. [2024-01-31 16:04:16,275 INFO L125 PetriNetUnfolderBase]: For 16814/16876 co-relation queries the response was YES. [2024-01-31 16:04:16,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9800 conditions, 2366 events. 1152/2366 cut-off events. For 16814/16876 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 15769 event pairs, 338 based on Foata normal form. 66/2263 useless extension candidates. Maximal degree in co-relation 9733. Up to 1150 conditions per place. [2024-01-31 16:04:16,296 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 95 selfloop transitions, 79 changer transitions 0/202 dead transitions. [2024-01-31 16:04:16,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 202 transitions, 2519 flow [2024-01-31 16:04:16,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:16,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:16,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 301 transitions. [2024-01-31 16:04:16,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.589041095890411 [2024-01-31 16:04:16,297 INFO L175 Difference]: Start difference. First operand has 164 places, 167 transitions, 1977 flow. Second operand 7 states and 301 transitions. [2024-01-31 16:04:16,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 202 transitions, 2519 flow [2024-01-31 16:04:16,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 202 transitions, 2505 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-01-31 16:04:16,330 INFO L231 Difference]: Finished difference. Result has 171 places, 171 transitions, 2201 flow [2024-01-31 16:04:16,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1963, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2201, PETRI_PLACES=171, PETRI_TRANSITIONS=171} [2024-01-31 16:04:16,331 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 94 predicate places. [2024-01-31 16:04:16,331 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 171 transitions, 2201 flow [2024-01-31 16:04:16,331 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) [2024-01-31 16:04:16,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:16,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:16,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-01-31 16:04:16,332 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:16,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:16,332 INFO L85 PathProgramCache]: Analyzing trace with hash -2106059276, now seen corresponding path program 2 times [2024-01-31 16:04:16,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:16,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883522578] [2024-01-31 16:04:16,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:16,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:16,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:16,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:16,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:16,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883522578] [2024-01-31 16:04:16,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883522578] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:16,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:16,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:16,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113922769] [2024-01-31 16:04:16,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:16,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:16,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:16,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:16,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:16,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:04:16,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 171 transitions, 2201 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) [2024-01-31 16:04:16,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:16,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:04:16,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:17,013 INFO L124 PetriNetUnfolderBase]: 1422/2848 cut-off events. [2024-01-31 16:04:17,013 INFO L125 PetriNetUnfolderBase]: For 23235/23317 co-relation queries the response was YES. [2024-01-31 16:04:17,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12474 conditions, 2848 events. 1422/2848 cut-off events. For 23235/23317 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 19290 event pairs, 553 based on Foata normal form. 34/2697 useless extension candidates. Maximal degree in co-relation 12404. Up to 1784 conditions per place. [2024-01-31 16:04:17,039 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 111 selfloop transitions, 65 changer transitions 0/204 dead transitions. [2024-01-31 16:04:17,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 204 transitions, 2757 flow [2024-01-31 16:04:17,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:17,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:17,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 297 transitions. [2024-01-31 16:04:17,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5812133072407045 [2024-01-31 16:04:17,041 INFO L175 Difference]: Start difference. First operand has 171 places, 171 transitions, 2201 flow. Second operand 7 states and 297 transitions. [2024-01-31 16:04:17,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 204 transitions, 2757 flow [2024-01-31 16:04:17,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 204 transitions, 2630 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-01-31 16:04:17,086 INFO L231 Difference]: Finished difference. Result has 174 places, 175 transitions, 2250 flow [2024-01-31 16:04:17,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2078, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2250, PETRI_PLACES=174, PETRI_TRANSITIONS=175} [2024-01-31 16:04:17,087 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 97 predicate places. [2024-01-31 16:04:17,087 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 175 transitions, 2250 flow [2024-01-31 16:04:17,087 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) [2024-01-31 16:04:17,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:17,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:17,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-01-31 16:04:17,088 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:17,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:17,088 INFO L85 PathProgramCache]: Analyzing trace with hash -2105318066, now seen corresponding path program 3 times [2024-01-31 16:04:17,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:17,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630598053] [2024-01-31 16:04:17,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:17,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:17,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:17,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:17,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:17,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630598053] [2024-01-31 16:04:17,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630598053] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:17,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:17,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:17,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802925530] [2024-01-31 16:04:17,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:17,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:17,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:17,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:17,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:17,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:04:17,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 175 transitions, 2250 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) [2024-01-31 16:04:17,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:17,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:04:17,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:17,800 INFO L124 PetriNetUnfolderBase]: 1390/2800 cut-off events. [2024-01-31 16:04:17,800 INFO L125 PetriNetUnfolderBase]: For 22036/22114 co-relation queries the response was YES. [2024-01-31 16:04:17,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12200 conditions, 2800 events. 1390/2800 cut-off events. For 22036/22114 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 18918 event pairs, 533 based on Foata normal form. 34/2649 useless extension candidates. Maximal degree in co-relation 12129. Up to 1776 conditions per place. [2024-01-31 16:04:17,824 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 113 selfloop transitions, 67 changer transitions 0/208 dead transitions. [2024-01-31 16:04:17,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 208 transitions, 2770 flow [2024-01-31 16:04:17,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:04:17,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:04:17,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 365 transitions. [2024-01-31 16:04:17,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-01-31 16:04:17,825 INFO L175 Difference]: Start difference. First operand has 174 places, 175 transitions, 2250 flow. Second operand 9 states and 365 transitions. [2024-01-31 16:04:17,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 208 transitions, 2770 flow [2024-01-31 16:04:17,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 208 transitions, 2689 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-01-31 16:04:17,873 INFO L231 Difference]: Finished difference. Result has 180 places, 175 transitions, 2308 flow [2024-01-31 16:04:17,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2169, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2308, PETRI_PLACES=180, PETRI_TRANSITIONS=175} [2024-01-31 16:04:17,873 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 103 predicate places. [2024-01-31 16:04:17,873 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 175 transitions, 2308 flow [2024-01-31 16:04:17,874 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) [2024-01-31 16:04:17,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:17,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:17,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-01-31 16:04:17,874 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:17,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:17,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1467285132, now seen corresponding path program 4 times [2024-01-31 16:04:17,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:17,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581389222] [2024-01-31 16:04:17,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:17,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:17,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:18,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:18,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:18,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581389222] [2024-01-31 16:04:18,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581389222] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:18,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:18,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:18,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767254651] [2024-01-31 16:04:18,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:18,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:18,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:18,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:18,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:18,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:04:18,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 175 transitions, 2308 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) [2024-01-31 16:04:18,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:18,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:04:18,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:18,628 INFO L124 PetriNetUnfolderBase]: 1572/3086 cut-off events. [2024-01-31 16:04:18,628 INFO L125 PetriNetUnfolderBase]: For 25445/25533 co-relation queries the response was YES. [2024-01-31 16:04:18,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13834 conditions, 3086 events. 1572/3086 cut-off events. For 25445/25533 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 20859 event pairs, 508 based on Foata normal form. 34/2935 useless extension candidates. Maximal degree in co-relation 13761. Up to 1527 conditions per place. [2024-01-31 16:04:18,654 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 90 selfloop transitions, 87 changer transitions 0/205 dead transitions. [2024-01-31 16:04:18,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 205 transitions, 2848 flow [2024-01-31 16:04:18,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:18,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:18,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 263 transitions. [2024-01-31 16:04:18,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6004566210045662 [2024-01-31 16:04:18,656 INFO L175 Difference]: Start difference. First operand has 180 places, 175 transitions, 2308 flow. Second operand 6 states and 263 transitions. [2024-01-31 16:04:18,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 205 transitions, 2848 flow [2024-01-31 16:04:18,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 205 transitions, 2706 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-01-31 16:04:18,709 INFO L231 Difference]: Finished difference. Result has 178 places, 177 transitions, 2372 flow [2024-01-31 16:04:18,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2166, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2372, PETRI_PLACES=178, PETRI_TRANSITIONS=177} [2024-01-31 16:04:18,709 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 101 predicate places. [2024-01-31 16:04:18,709 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 177 transitions, 2372 flow [2024-01-31 16:04:18,710 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) [2024-01-31 16:04:18,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:18,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:18,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-01-31 16:04:18,710 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:18,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:18,710 INFO L85 PathProgramCache]: Analyzing trace with hash 26038784, now seen corresponding path program 1 times [2024-01-31 16:04:18,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:18,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347385211] [2024-01-31 16:04:18,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:18,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:18,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:18,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:18,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347385211] [2024-01-31 16:04:18,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347385211] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:18,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:18,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:18,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371521707] [2024-01-31 16:04:18,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:18,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:18,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:18,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:18,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:18,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:18,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 177 transitions, 2372 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) [2024-01-31 16:04:18,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:18,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:18,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:19,637 INFO L124 PetriNetUnfolderBase]: 1886/3577 cut-off events. [2024-01-31 16:04:19,637 INFO L125 PetriNetUnfolderBase]: For 27341/27370 co-relation queries the response was YES. [2024-01-31 16:04:19,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15872 conditions, 3577 events. 1886/3577 cut-off events. For 27341/27370 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 23906 event pairs, 790 based on Foata normal form. 54/3463 useless extension candidates. Maximal degree in co-relation 15798. Up to 2727 conditions per place. [2024-01-31 16:04:19,666 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 143 selfloop transitions, 45 changer transitions 0/204 dead transitions. [2024-01-31 16:04:19,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 204 transitions, 2876 flow [2024-01-31 16:04:19,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:04:19,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:04:19,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 249 transitions. [2024-01-31 16:04:19,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263698630136986 [2024-01-31 16:04:19,667 INFO L175 Difference]: Start difference. First operand has 178 places, 177 transitions, 2372 flow. Second operand 8 states and 249 transitions. [2024-01-31 16:04:19,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 204 transitions, 2876 flow [2024-01-31 16:04:19,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 204 transitions, 2700 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-01-31 16:04:19,731 INFO L231 Difference]: Finished difference. Result has 181 places, 179 transitions, 2328 flow [2024-01-31 16:04:19,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2200, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2328, PETRI_PLACES=181, PETRI_TRANSITIONS=179} [2024-01-31 16:04:19,732 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 104 predicate places. [2024-01-31 16:04:19,732 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 179 transitions, 2328 flow [2024-01-31 16:04:19,732 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) [2024-01-31 16:04:19,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:19,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:19,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-01-31 16:04:19,732 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:19,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:19,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1354266706, now seen corresponding path program 5 times [2024-01-31 16:04:19,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:19,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382121413] [2024-01-31 16:04:19,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:19,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:19,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:19,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:19,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:19,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382121413] [2024-01-31 16:04:19,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382121413] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:19,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:19,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:19,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825761114] [2024-01-31 16:04:19,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:19,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:19,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:19,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:19,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:19,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:04:19,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 179 transitions, 2328 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) [2024-01-31 16:04:19,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:19,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:04:19,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:20,450 INFO L124 PetriNetUnfolderBase]: 1503/3011 cut-off events. [2024-01-31 16:04:20,450 INFO L125 PetriNetUnfolderBase]: For 23822/23913 co-relation queries the response was YES. [2024-01-31 16:04:20,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13286 conditions, 3011 events. 1503/3011 cut-off events. For 23822/23913 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 20638 event pairs, 488 based on Foata normal form. 34/2858 useless extension candidates. Maximal degree in co-relation 13212. Up to 1500 conditions per place. [2024-01-31 16:04:20,479 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 92 selfloop transitions, 95 changer transitions 0/215 dead transitions. [2024-01-31 16:04:20,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 215 transitions, 2888 flow [2024-01-31 16:04:20,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:04:20,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:04:20,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 337 transitions. [2024-01-31 16:04:20,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.577054794520548 [2024-01-31 16:04:20,481 INFO L175 Difference]: Start difference. First operand has 181 places, 179 transitions, 2328 flow. Second operand 8 states and 337 transitions. [2024-01-31 16:04:20,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 215 transitions, 2888 flow [2024-01-31 16:04:20,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 215 transitions, 2800 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-01-31 16:04:20,543 INFO L231 Difference]: Finished difference. Result has 184 places, 179 transitions, 2439 flow [2024-01-31 16:04:20,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2240, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2439, PETRI_PLACES=184, PETRI_TRANSITIONS=179} [2024-01-31 16:04:20,544 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 107 predicate places. [2024-01-31 16:04:20,544 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 179 transitions, 2439 flow [2024-01-31 16:04:20,544 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) [2024-01-31 16:04:20,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:20,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:20,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-01-31 16:04:20,544 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:20,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:20,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1968208340, now seen corresponding path program 1 times [2024-01-31 16:04:20,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:20,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143413170] [2024-01-31 16:04:20,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:20,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:20,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:20,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:20,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143413170] [2024-01-31 16:04:20,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143413170] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:20,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:20,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:20,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637023870] [2024-01-31 16:04:20,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:20,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:20,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:20,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:20,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:20,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:20,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 179 transitions, 2439 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) [2024-01-31 16:04:20,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:20,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:20,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:21,536 INFO L124 PetriNetUnfolderBase]: 2111/3957 cut-off events. [2024-01-31 16:04:21,537 INFO L125 PetriNetUnfolderBase]: For 28319/28495 co-relation queries the response was YES. [2024-01-31 16:04:21,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17608 conditions, 3957 events. 2111/3957 cut-off events. For 28319/28495 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 25948 event pairs, 571 based on Foata normal form. 63/3778 useless extension candidates. Maximal degree in co-relation 17532. Up to 1661 conditions per place. [2024-01-31 16:04:21,581 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 111 selfloop transitions, 90 changer transitions 0/221 dead transitions. [2024-01-31 16:04:21,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 221 transitions, 3023 flow [2024-01-31 16:04:21,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:04:21,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:04:21,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 270 transitions. [2024-01-31 16:04:21,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4623287671232877 [2024-01-31 16:04:21,583 INFO L175 Difference]: Start difference. First operand has 184 places, 179 transitions, 2439 flow. Second operand 8 states and 270 transitions. [2024-01-31 16:04:21,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 221 transitions, 3023 flow [2024-01-31 16:04:21,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 221 transitions, 2778 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-01-31 16:04:21,676 INFO L231 Difference]: Finished difference. Result has 184 places, 179 transitions, 2381 flow [2024-01-31 16:04:21,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2194, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2381, PETRI_PLACES=184, PETRI_TRANSITIONS=179} [2024-01-31 16:04:21,677 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 107 predicate places. [2024-01-31 16:04:21,677 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 179 transitions, 2381 flow [2024-01-31 16:04:21,677 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) [2024-01-31 16:04:21,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:21,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:21,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-01-31 16:04:21,678 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:21,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:21,678 INFO L85 PathProgramCache]: Analyzing trace with hash -149576838, now seen corresponding path program 2 times [2024-01-31 16:04:21,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:21,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595314121] [2024-01-31 16:04:21,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:21,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:21,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:21,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:21,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:21,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595314121] [2024-01-31 16:04:21,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595314121] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:21,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:21,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:21,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558867281] [2024-01-31 16:04:21,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:21,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:21,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:21,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:21,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:21,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:21,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 179 transitions, 2381 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) [2024-01-31 16:04:21,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:21,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:21,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:22,604 INFO L124 PetriNetUnfolderBase]: 2018/3769 cut-off events. [2024-01-31 16:04:22,604 INFO L125 PetriNetUnfolderBase]: For 25485/25514 co-relation queries the response was YES. [2024-01-31 16:04:22,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16947 conditions, 3769 events. 2018/3769 cut-off events. For 25485/25514 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 25084 event pairs, 496 based on Foata normal form. 26/3639 useless extension candidates. Maximal degree in co-relation 16871. Up to 1468 conditions per place. [2024-01-31 16:04:22,656 INFO L140 encePairwiseOnDemand]: 59/73 looper letters, 119 selfloop transitions, 101 changer transitions 0/236 dead transitions. [2024-01-31 16:04:22,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 236 transitions, 3136 flow [2024-01-31 16:04:22,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:04:22,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:04:22,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 283 transitions. [2024-01-31 16:04:22,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4845890410958904 [2024-01-31 16:04:22,661 INFO L175 Difference]: Start difference. First operand has 184 places, 179 transitions, 2381 flow. Second operand 8 states and 283 transitions. [2024-01-31 16:04:22,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 236 transitions, 3136 flow [2024-01-31 16:04:22,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 236 transitions, 2944 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-01-31 16:04:22,759 INFO L231 Difference]: Finished difference. Result has 186 places, 188 transitions, 2530 flow [2024-01-31 16:04:22,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2201, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2530, PETRI_PLACES=186, PETRI_TRANSITIONS=188} [2024-01-31 16:04:22,760 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 109 predicate places. [2024-01-31 16:04:22,760 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 188 transitions, 2530 flow [2024-01-31 16:04:22,760 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) [2024-01-31 16:04:22,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:22,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:22,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-01-31 16:04:22,761 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:22,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:22,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1012345677, now seen corresponding path program 1 times [2024-01-31 16:04:22,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:22,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279783023] [2024-01-31 16:04:22,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:22,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:22,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:22,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:22,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:22,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279783023] [2024-01-31 16:04:22,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279783023] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:22,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:22,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:22,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068511359] [2024-01-31 16:04:22,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:22,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:22,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:22,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:22,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:22,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:22,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 188 transitions, 2530 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) [2024-01-31 16:04:22,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:22,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:22,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:23,680 INFO L124 PetriNetUnfolderBase]: 2036/3847 cut-off events. [2024-01-31 16:04:23,681 INFO L125 PetriNetUnfolderBase]: For 27926/27955 co-relation queries the response was YES. [2024-01-31 16:04:23,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18036 conditions, 3847 events. 2036/3847 cut-off events. For 27926/27955 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 25927 event pairs, 741 based on Foata normal form. 18/3697 useless extension candidates. Maximal degree in co-relation 17958. Up to 3086 conditions per place. [2024-01-31 16:04:23,723 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 172 selfloop transitions, 34 changer transitions 0/222 dead transitions. [2024-01-31 16:04:23,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 222 transitions, 3118 flow [2024-01-31 16:04:23,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:04:23,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:04:23,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 252 transitions. [2024-01-31 16:04:23,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4315068493150685 [2024-01-31 16:04:23,725 INFO L175 Difference]: Start difference. First operand has 186 places, 188 transitions, 2530 flow. Second operand 8 states and 252 transitions. [2024-01-31 16:04:23,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 222 transitions, 3118 flow [2024-01-31 16:04:23,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 222 transitions, 2983 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-01-31 16:04:23,822 INFO L231 Difference]: Finished difference. Result has 190 places, 195 transitions, 2533 flow [2024-01-31 16:04:23,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2395, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2533, PETRI_PLACES=190, PETRI_TRANSITIONS=195} [2024-01-31 16:04:23,823 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 113 predicate places. [2024-01-31 16:04:23,823 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 195 transitions, 2533 flow [2024-01-31 16:04:23,824 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) [2024-01-31 16:04:23,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:23,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:23,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-01-31 16:04:23,824 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:23,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:23,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1012110387, now seen corresponding path program 2 times [2024-01-31 16:04:23,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:23,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657504616] [2024-01-31 16:04:23,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:23,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:23,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:24,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:24,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:24,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657504616] [2024-01-31 16:04:24,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657504616] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:24,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:24,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:24,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056465016] [2024-01-31 16:04:24,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:24,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:24,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:24,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:24,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:24,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:24,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 195 transitions, 2533 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) [2024-01-31 16:04:24,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:24,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:24,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:24,711 INFO L124 PetriNetUnfolderBase]: 2030/3837 cut-off events. [2024-01-31 16:04:24,712 INFO L125 PetriNetUnfolderBase]: For 26489/26518 co-relation queries the response was YES. [2024-01-31 16:04:24,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17650 conditions, 3837 events. 2030/3837 cut-off events. For 26489/26518 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 25877 event pairs, 734 based on Foata normal form. 18/3687 useless extension candidates. Maximal degree in co-relation 17570. Up to 3086 conditions per place. [2024-01-31 16:04:24,760 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 170 selfloop transitions, 36 changer transitions 0/222 dead transitions. [2024-01-31 16:04:24,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 222 transitions, 3063 flow [2024-01-31 16:04:24,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:04:24,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:04:24,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 252 transitions. [2024-01-31 16:04:24,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4315068493150685 [2024-01-31 16:04:24,762 INFO L175 Difference]: Start difference. First operand has 190 places, 195 transitions, 2533 flow. Second operand 8 states and 252 transitions. [2024-01-31 16:04:24,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 222 transitions, 3063 flow [2024-01-31 16:04:24,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 222 transitions, 3011 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-01-31 16:04:24,875 INFO L231 Difference]: Finished difference. Result has 194 places, 195 transitions, 2558 flow [2024-01-31 16:04:24,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2481, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2558, PETRI_PLACES=194, PETRI_TRANSITIONS=195} [2024-01-31 16:04:24,877 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 117 predicate places. [2024-01-31 16:04:24,878 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 195 transitions, 2558 flow [2024-01-31 16:04:24,879 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) [2024-01-31 16:04:24,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:24,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:24,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-01-31 16:04:24,880 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:24,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:24,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1037145914, now seen corresponding path program 2 times [2024-01-31 16:04:24,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:24,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200219651] [2024-01-31 16:04:24,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:24,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:24,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:25,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:25,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:25,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200219651] [2024-01-31 16:04:25,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200219651] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:25,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:25,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:25,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289365191] [2024-01-31 16:04:25,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:25,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:25,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:25,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:25,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:25,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:25,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 195 transitions, 2558 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) [2024-01-31 16:04:25,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:25,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:25,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:25,979 INFO L124 PetriNetUnfolderBase]: 2446/4527 cut-off events. [2024-01-31 16:04:25,979 INFO L125 PetriNetUnfolderBase]: For 32447/32668 co-relation queries the response was YES. [2024-01-31 16:04:26,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20807 conditions, 4527 events. 2446/4527 cut-off events. For 32447/32668 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 29948 event pairs, 797 based on Foata normal form. 108/4367 useless extension candidates. Maximal degree in co-relation 20726. Up to 2910 conditions per place. [2024-01-31 16:04:26,037 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 141 selfloop transitions, 70 changer transitions 0/235 dead transitions. [2024-01-31 16:04:26,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 235 transitions, 3187 flow [2024-01-31 16:04:26,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:04:26,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:04:26,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 267 transitions. [2024-01-31 16:04:26,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4571917808219178 [2024-01-31 16:04:26,040 INFO L175 Difference]: Start difference. First operand has 194 places, 195 transitions, 2558 flow. Second operand 8 states and 267 transitions. [2024-01-31 16:04:26,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 235 transitions, 3187 flow [2024-01-31 16:04:26,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 235 transitions, 3119 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-01-31 16:04:26,166 INFO L231 Difference]: Finished difference. Result has 197 places, 195 transitions, 2640 flow [2024-01-31 16:04:26,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2492, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2640, PETRI_PLACES=197, PETRI_TRANSITIONS=195} [2024-01-31 16:04:26,167 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 120 predicate places. [2024-01-31 16:04:26,167 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 195 transitions, 2640 flow [2024-01-31 16:04:26,167 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) [2024-01-31 16:04:26,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:26,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:26,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-01-31 16:04:26,168 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:26,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:26,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1092433342, now seen corresponding path program 3 times [2024-01-31 16:04:26,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:26,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248010291] [2024-01-31 16:04:26,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:26,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:26,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:26,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:26,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:26,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248010291] [2024-01-31 16:04:26,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248010291] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:26,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:26,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:26,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164122378] [2024-01-31 16:04:26,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:26,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:26,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:26,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:26,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:26,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:26,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 195 transitions, 2640 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) [2024-01-31 16:04:26,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:26,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:26,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:27,175 INFO L124 PetriNetUnfolderBase]: 1950/3709 cut-off events. [2024-01-31 16:04:27,176 INFO L125 PetriNetUnfolderBase]: For 28702/28731 co-relation queries the response was YES. [2024-01-31 16:04:27,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17527 conditions, 3709 events. 1950/3709 cut-off events. For 28702/28731 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 24955 event pairs, 758 based on Foata normal form. 26/3567 useless extension candidates. Maximal degree in co-relation 17445. Up to 2452 conditions per place. [2024-01-31 16:04:27,200 INFO L140 encePairwiseOnDemand]: 59/73 looper letters, 149 selfloop transitions, 74 changer transitions 0/239 dead transitions. [2024-01-31 16:04:27,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 239 transitions, 3328 flow [2024-01-31 16:04:27,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:04:27,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:04:27,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 276 transitions. [2024-01-31 16:04:27,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4726027397260274 [2024-01-31 16:04:27,203 INFO L175 Difference]: Start difference. First operand has 197 places, 195 transitions, 2640 flow. Second operand 8 states and 276 transitions. [2024-01-31 16:04:27,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 239 transitions, 3328 flow [2024-01-31 16:04:27,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 239 transitions, 3188 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-01-31 16:04:27,286 INFO L231 Difference]: Finished difference. Result has 198 places, 195 transitions, 2656 flow [2024-01-31 16:04:27,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2500, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2656, PETRI_PLACES=198, PETRI_TRANSITIONS=195} [2024-01-31 16:04:27,286 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 121 predicate places. [2024-01-31 16:04:27,286 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 195 transitions, 2656 flow [2024-01-31 16:04:27,287 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) [2024-01-31 16:04:27,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:27,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:27,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-01-31 16:04:27,287 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:27,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:27,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1312589031, now seen corresponding path program 3 times [2024-01-31 16:04:27,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:27,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487870029] [2024-01-31 16:04:27,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:27,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:27,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:27,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:27,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:27,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487870029] [2024-01-31 16:04:27,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487870029] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:27,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:27,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:27,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223370714] [2024-01-31 16:04:27,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:27,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:27,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:27,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:27,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:27,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:27,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 195 transitions, 2656 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) [2024-01-31 16:04:27,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:27,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:27,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:28,191 INFO L124 PetriNetUnfolderBase]: 1956/3714 cut-off events. [2024-01-31 16:04:28,191 INFO L125 PetriNetUnfolderBase]: For 29833/29862 co-relation queries the response was YES. [2024-01-31 16:04:28,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17778 conditions, 3714 events. 1956/3714 cut-off events. For 29833/29862 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 24904 event pairs, 772 based on Foata normal form. 18/3564 useless extension candidates. Maximal degree in co-relation 17695. Up to 2962 conditions per place. [2024-01-31 16:04:28,235 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 170 selfloop transitions, 37 changer transitions 0/223 dead transitions. [2024-01-31 16:04:28,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 223 transitions, 3210 flow [2024-01-31 16:04:28,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:04:28,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:04:28,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 250 transitions. [2024-01-31 16:04:28,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4280821917808219 [2024-01-31 16:04:28,237 INFO L175 Difference]: Start difference. First operand has 198 places, 195 transitions, 2656 flow. Second operand 8 states and 250 transitions. [2024-01-31 16:04:28,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 223 transitions, 3210 flow [2024-01-31 16:04:28,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 223 transitions, 3060 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-01-31 16:04:28,345 INFO L231 Difference]: Finished difference. Result has 200 places, 200 transitions, 2646 flow [2024-01-31 16:04:28,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2508, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2646, PETRI_PLACES=200, PETRI_TRANSITIONS=200} [2024-01-31 16:04:28,346 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 123 predicate places. [2024-01-31 16:04:28,346 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 200 transitions, 2646 flow [2024-01-31 16:04:28,346 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) [2024-01-31 16:04:28,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:28,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:28,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-01-31 16:04:28,347 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:28,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:28,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1813136114, now seen corresponding path program 3 times [2024-01-31 16:04:28,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:28,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212509026] [2024-01-31 16:04:28,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:28,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:28,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:28,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:28,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:28,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212509026] [2024-01-31 16:04:28,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212509026] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:28,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:28,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:28,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096020987] [2024-01-31 16:04:28,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:28,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:28,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:28,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:28,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:28,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:28,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 200 transitions, 2646 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) [2024-01-31 16:04:28,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:28,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:28,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:29,510 INFO L124 PetriNetUnfolderBase]: 2331/4332 cut-off events. [2024-01-31 16:04:29,510 INFO L125 PetriNetUnfolderBase]: For 33996/34206 co-relation queries the response was YES. [2024-01-31 16:04:29,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20277 conditions, 4332 events. 2331/4332 cut-off events. For 33996/34206 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 28442 event pairs, 771 based on Foata normal form. 133/4201 useless extension candidates. Maximal degree in co-relation 20192. Up to 2902 conditions per place. [2024-01-31 16:04:29,565 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 147 selfloop transitions, 72 changer transitions 0/244 dead transitions. [2024-01-31 16:04:29,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 244 transitions, 3271 flow [2024-01-31 16:04:29,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:04:29,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:04:29,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 315 transitions. [2024-01-31 16:04:29,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4315068493150685 [2024-01-31 16:04:29,566 INFO L175 Difference]: Start difference. First operand has 200 places, 200 transitions, 2646 flow. Second operand 10 states and 315 transitions. [2024-01-31 16:04:29,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 244 transitions, 3271 flow [2024-01-31 16:04:29,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 244 transitions, 3228 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-01-31 16:04:29,691 INFO L231 Difference]: Finished difference. Result has 208 places, 200 transitions, 2757 flow [2024-01-31 16:04:29,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2604, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2757, PETRI_PLACES=208, PETRI_TRANSITIONS=200} [2024-01-31 16:04:29,692 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 131 predicate places. [2024-01-31 16:04:29,692 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 200 transitions, 2757 flow [2024-01-31 16:04:29,693 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) [2024-01-31 16:04:29,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:29,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:29,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-01-31 16:04:29,693 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:29,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:29,694 INFO L85 PathProgramCache]: Analyzing trace with hash 765296424, now seen corresponding path program 4 times [2024-01-31 16:04:29,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:29,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232924165] [2024-01-31 16:04:29,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:29,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:29,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:29,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:29,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:29,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232924165] [2024-01-31 16:04:29,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232924165] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:29,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:29,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:29,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430444614] [2024-01-31 16:04:29,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:29,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:29,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:29,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:29,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:30,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:30,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 200 transitions, 2757 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) [2024-01-31 16:04:30,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:30,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:30,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:30,680 INFO L124 PetriNetUnfolderBase]: 1806/3477 cut-off events. [2024-01-31 16:04:30,680 INFO L125 PetriNetUnfolderBase]: For 29548/29577 co-relation queries the response was YES. [2024-01-31 16:04:30,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16626 conditions, 3477 events. 1806/3477 cut-off events. For 29548/29577 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 23200 event pairs, 706 based on Foata normal form. 38/3347 useless extension candidates. Maximal degree in co-relation 16539. Up to 2438 conditions per place. [2024-01-31 16:04:30,725 INFO L140 encePairwiseOnDemand]: 59/73 looper letters, 151 selfloop transitions, 77 changer transitions 0/244 dead transitions. [2024-01-31 16:04:30,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 244 transitions, 3414 flow [2024-01-31 16:04:30,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:04:30,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:04:30,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 321 transitions. [2024-01-31 16:04:30,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4397260273972603 [2024-01-31 16:04:30,727 INFO L175 Difference]: Start difference. First operand has 208 places, 200 transitions, 2757 flow. Second operand 10 states and 321 transitions. [2024-01-31 16:04:30,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 244 transitions, 3414 flow [2024-01-31 16:04:30,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 244 transitions, 3270 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-01-31 16:04:30,825 INFO L231 Difference]: Finished difference. Result has 209 places, 200 transitions, 2776 flow [2024-01-31 16:04:30,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2613, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2776, PETRI_PLACES=209, PETRI_TRANSITIONS=200} [2024-01-31 16:04:30,826 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 132 predicate places. [2024-01-31 16:04:30,826 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 200 transitions, 2776 flow [2024-01-31 16:04:30,827 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) [2024-01-31 16:04:30,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:30,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:30,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-01-31 16:04:30,827 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:30,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:30,828 INFO L85 PathProgramCache]: Analyzing trace with hash 443041453, now seen corresponding path program 4 times [2024-01-31 16:04:30,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:30,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307573053] [2024-01-31 16:04:30,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:30,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:30,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:31,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:31,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:31,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307573053] [2024-01-31 16:04:31,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307573053] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:31,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:31,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:31,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053334956] [2024-01-31 16:04:31,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:31,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:31,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:31,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:31,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:31,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:31,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 200 transitions, 2776 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) [2024-01-31 16:04:31,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:31,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:31,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:31,730 INFO L124 PetriNetUnfolderBase]: 1800/3446 cut-off events. [2024-01-31 16:04:31,730 INFO L125 PetriNetUnfolderBase]: For 30049/30081 co-relation queries the response was YES. [2024-01-31 16:04:31,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16718 conditions, 3446 events. 1800/3446 cut-off events. For 30049/30081 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 22912 event pairs, 730 based on Foata normal form. 19/3295 useless extension candidates. Maximal degree in co-relation 16630. Up to 2722 conditions per place. [2024-01-31 16:04:31,763 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 166 selfloop transitions, 41 changer transitions 0/223 dead transitions. [2024-01-31 16:04:31,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 223 transitions, 3293 flow [2024-01-31 16:04:31,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:04:31,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:04:31,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 246 transitions. [2024-01-31 16:04:31,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212328767123288 [2024-01-31 16:04:31,765 INFO L175 Difference]: Start difference. First operand has 209 places, 200 transitions, 2776 flow. Second operand 8 states and 246 transitions. [2024-01-31 16:04:31,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 223 transitions, 3293 flow [2024-01-31 16:04:31,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 223 transitions, 3139 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-01-31 16:04:31,856 INFO L231 Difference]: Finished difference. Result has 209 places, 205 transitions, 2770 flow [2024-01-31 16:04:31,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2622, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2770, PETRI_PLACES=209, PETRI_TRANSITIONS=205} [2024-01-31 16:04:31,857 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 132 predicate places. [2024-01-31 16:04:31,857 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 205 transitions, 2770 flow [2024-01-31 16:04:31,858 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) [2024-01-31 16:04:31,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:31,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:31,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-01-31 16:04:31,858 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:31,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:31,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1967459716, now seen corresponding path program 4 times [2024-01-31 16:04:31,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:31,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387223381] [2024-01-31 16:04:31,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:31,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:31,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:32,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:32,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:32,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387223381] [2024-01-31 16:04:32,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387223381] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:32,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:32,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:32,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112281748] [2024-01-31 16:04:32,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:32,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:32,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:32,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:32,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:32,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:32,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 205 transitions, 2770 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) [2024-01-31 16:04:32,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:32,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:32,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:32,961 INFO L124 PetriNetUnfolderBase]: 2752/5048 cut-off events. [2024-01-31 16:04:32,961 INFO L125 PetriNetUnfolderBase]: For 42263/42522 co-relation queries the response was YES. [2024-01-31 16:04:33,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24295 conditions, 5048 events. 2752/5048 cut-off events. For 42263/42522 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 34019 event pairs, 846 based on Foata normal form. 136/4904 useless extension candidates. Maximal degree in co-relation 24205. Up to 2951 conditions per place. [2024-01-31 16:04:33,046 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 165 selfloop transitions, 74 changer transitions 0/265 dead transitions. [2024-01-31 16:04:33,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 265 transitions, 3635 flow [2024-01-31 16:04:33,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:04:33,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:04:33,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 297 transitions. [2024-01-31 16:04:33,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520547945205479 [2024-01-31 16:04:33,048 INFO L175 Difference]: Start difference. First operand has 209 places, 205 transitions, 2770 flow. Second operand 9 states and 297 transitions. [2024-01-31 16:04:33,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 265 transitions, 3635 flow [2024-01-31 16:04:33,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 265 transitions, 3591 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:04:33,227 INFO L231 Difference]: Finished difference. Result has 217 places, 215 transitions, 3025 flow [2024-01-31 16:04:33,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2728, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3025, PETRI_PLACES=217, PETRI_TRANSITIONS=215} [2024-01-31 16:04:33,238 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 140 predicate places. [2024-01-31 16:04:33,239 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 215 transitions, 3025 flow [2024-01-31 16:04:33,239 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) [2024-01-31 16:04:33,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:33,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:33,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-01-31 16:04:33,241 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:33,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:33,242 INFO L85 PathProgramCache]: Analyzing trace with hash 197912130, now seen corresponding path program 5 times [2024-01-31 16:04:33,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:33,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270184073] [2024-01-31 16:04:33,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:33,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:33,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:33,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:33,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:33,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270184073] [2024-01-31 16:04:33,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270184073] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:33,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:33,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:33,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575674689] [2024-01-31 16:04:33,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:33,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:33,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:33,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:33,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:33,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:33,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 215 transitions, 3025 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) [2024-01-31 16:04:33,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:33,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:33,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:34,375 INFO L124 PetriNetUnfolderBase]: 2060/3876 cut-off events. [2024-01-31 16:04:34,375 INFO L125 PetriNetUnfolderBase]: For 36932/36964 co-relation queries the response was YES. [2024-01-31 16:04:34,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19112 conditions, 3876 events. 2060/3876 cut-off events. For 36932/36964 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 26194 event pairs, 724 based on Foata normal form. 111/3831 useless extension candidates. Maximal degree in co-relation 19019. Up to 1711 conditions per place. [2024-01-31 16:04:34,413 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 155 selfloop transitions, 101 changer transitions 0/272 dead transitions. [2024-01-31 16:04:34,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 272 transitions, 3898 flow [2024-01-31 16:04:34,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:04:34,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:04:34,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 354 transitions. [2024-01-31 16:04:34,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44084682440846823 [2024-01-31 16:04:34,415 INFO L175 Difference]: Start difference. First operand has 217 places, 215 transitions, 3025 flow. Second operand 11 states and 354 transitions. [2024-01-31 16:04:34,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 272 transitions, 3898 flow [2024-01-31 16:04:34,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 272 transitions, 3741 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-01-31 16:04:34,515 INFO L231 Difference]: Finished difference. Result has 222 places, 215 transitions, 3084 flow [2024-01-31 16:04:34,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2868, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3084, PETRI_PLACES=222, PETRI_TRANSITIONS=215} [2024-01-31 16:04:34,516 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 145 predicate places. [2024-01-31 16:04:34,516 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 215 transitions, 3084 flow [2024-01-31 16:04:34,516 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) [2024-01-31 16:04:34,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:34,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:34,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-01-31 16:04:34,517 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:34,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:34,517 INFO L85 PathProgramCache]: Analyzing trace with hash 189510946, now seen corresponding path program 5 times [2024-01-31 16:04:34,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:34,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122880209] [2024-01-31 16:04:34,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:34,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:34,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:34,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:34,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:34,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122880209] [2024-01-31 16:04:34,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122880209] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:34,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:34,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:34,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063990856] [2024-01-31 16:04:34,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:34,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:34,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:34,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:34,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:34,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:34,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 215 transitions, 3084 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) [2024-01-31 16:04:34,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:34,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:34,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:35,624 INFO L124 PetriNetUnfolderBase]: 2453/4563 cut-off events. [2024-01-31 16:04:35,624 INFO L125 PetriNetUnfolderBase]: For 41983/42240 co-relation queries the response was YES. [2024-01-31 16:04:35,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22466 conditions, 4563 events. 2453/4563 cut-off events. For 41983/42240 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 30506 event pairs, 718 based on Foata normal form. 136/4430 useless extension candidates. Maximal degree in co-relation 22372. Up to 2720 conditions per place. [2024-01-31 16:04:35,679 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 172 selfloop transitions, 76 changer transitions 0/274 dead transitions. [2024-01-31 16:04:35,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 274 transitions, 3874 flow [2024-01-31 16:04:35,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:04:35,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:04:35,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 351 transitions. [2024-01-31 16:04:35,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43711083437110837 [2024-01-31 16:04:35,681 INFO L175 Difference]: Start difference. First operand has 222 places, 215 transitions, 3084 flow. Second operand 11 states and 351 transitions. [2024-01-31 16:04:35,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 274 transitions, 3874 flow [2024-01-31 16:04:35,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 274 transitions, 3607 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-01-31 16:04:35,795 INFO L231 Difference]: Finished difference. Result has 222 places, 215 transitions, 2978 flow [2024-01-31 16:04:35,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2817, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2978, PETRI_PLACES=222, PETRI_TRANSITIONS=215} [2024-01-31 16:04:35,796 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 145 predicate places. [2024-01-31 16:04:35,796 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 215 transitions, 2978 flow [2024-01-31 16:04:35,796 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) [2024-01-31 16:04:35,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:35,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:35,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-01-31 16:04:35,796 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:35,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:35,797 INFO L85 PathProgramCache]: Analyzing trace with hash 197255550, now seen corresponding path program 6 times [2024-01-31 16:04:35,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:35,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686656085] [2024-01-31 16:04:35,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:35,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:35,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:35,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:35,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:35,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686656085] [2024-01-31 16:04:35,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686656085] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:35,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:35,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:35,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17409548] [2024-01-31 16:04:35,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:35,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:35,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:35,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:35,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:36,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:36,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 215 transitions, 2978 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) [2024-01-31 16:04:36,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:36,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:36,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:36,768 INFO L124 PetriNetUnfolderBase]: 1930/3668 cut-off events. [2024-01-31 16:04:36,768 INFO L125 PetriNetUnfolderBase]: For 33970/34002 co-relation queries the response was YES. [2024-01-31 16:04:36,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17708 conditions, 3668 events. 1930/3668 cut-off events. For 33970/34002 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 24653 event pairs, 694 based on Foata normal form. 51/3563 useless extension candidates. Maximal degree in co-relation 17614. Up to 1687 conditions per place. [2024-01-31 16:04:36,809 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 143 selfloop transitions, 97 changer transitions 0/256 dead transitions. [2024-01-31 16:04:36,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 256 transitions, 3702 flow [2024-01-31 16:04:36,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:04:36,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:04:36,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 293 transitions. [2024-01-31 16:04:36,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4459665144596651 [2024-01-31 16:04:36,811 INFO L175 Difference]: Start difference. First operand has 222 places, 215 transitions, 2978 flow. Second operand 9 states and 293 transitions. [2024-01-31 16:04:36,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 256 transitions, 3702 flow [2024-01-31 16:04:36,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 256 transitions, 3546 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-01-31 16:04:36,899 INFO L231 Difference]: Finished difference. Result has 222 places, 215 transitions, 3028 flow [2024-01-31 16:04:36,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2822, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3028, PETRI_PLACES=222, PETRI_TRANSITIONS=215} [2024-01-31 16:04:36,900 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 145 predicate places. [2024-01-31 16:04:36,900 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 215 transitions, 3028 flow [2024-01-31 16:04:36,900 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) [2024-01-31 16:04:36,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:36,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:36,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-01-31 16:04:36,901 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:36,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:36,901 INFO L85 PathProgramCache]: Analyzing trace with hash 937562956, now seen corresponding path program 6 times [2024-01-31 16:04:36,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:36,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130056398] [2024-01-31 16:04:36,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:36,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:36,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:37,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:37,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:37,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130056398] [2024-01-31 16:04:37,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130056398] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:37,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:37,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:37,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643645501] [2024-01-31 16:04:37,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:37,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:37,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:37,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:37,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:37,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:37,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 215 transitions, 3028 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) [2024-01-31 16:04:37,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:37,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:37,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:38,042 INFO L124 PetriNetUnfolderBase]: 2291/4295 cut-off events. [2024-01-31 16:04:38,043 INFO L125 PetriNetUnfolderBase]: For 39335/39566 co-relation queries the response was YES. [2024-01-31 16:04:38,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20628 conditions, 4295 events. 2291/4295 cut-off events. For 39335/39566 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 28618 event pairs, 788 based on Foata normal form. 118/4145 useless extension candidates. Maximal degree in co-relation 20533. Up to 3370 conditions per place. [2024-01-31 16:04:38,104 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 181 selfloop transitions, 37 changer transitions 0/244 dead transitions. [2024-01-31 16:04:38,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 244 transitions, 3593 flow [2024-01-31 16:04:38,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:04:38,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:04:38,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 250 transitions. [2024-01-31 16:04:38,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4280821917808219 [2024-01-31 16:04:38,106 INFO L175 Difference]: Start difference. First operand has 222 places, 215 transitions, 3028 flow. Second operand 8 states and 250 transitions. [2024-01-31 16:04:38,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 244 transitions, 3593 flow [2024-01-31 16:04:38,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 244 transitions, 3395 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-01-31 16:04:38,222 INFO L231 Difference]: Finished difference. Result has 222 places, 215 transitions, 2914 flow [2024-01-31 16:04:38,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2830, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2914, PETRI_PLACES=222, PETRI_TRANSITIONS=215} [2024-01-31 16:04:38,223 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 145 predicate places. [2024-01-31 16:04:38,223 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 215 transitions, 2914 flow [2024-01-31 16:04:38,223 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) [2024-01-31 16:04:38,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:38,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:38,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-01-31 16:04:38,224 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:38,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:38,224 INFO L85 PathProgramCache]: Analyzing trace with hash 995958211, now seen corresponding path program 1 times [2024-01-31 16:04:38,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:38,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468821251] [2024-01-31 16:04:38,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:38,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:38,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:38,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:38,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:38,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468821251] [2024-01-31 16:04:38,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468821251] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:38,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:38,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:38,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918769090] [2024-01-31 16:04:38,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:38,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:38,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:38,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:38,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:38,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:38,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 215 transitions, 2914 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) [2024-01-31 16:04:38,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:38,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:38,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:39,341 INFO L124 PetriNetUnfolderBase]: 2288/4354 cut-off events. [2024-01-31 16:04:39,341 INFO L125 PetriNetUnfolderBase]: For 36959/37182 co-relation queries the response was YES. [2024-01-31 16:04:39,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20291 conditions, 4354 events. 2288/4354 cut-off events. For 36959/37182 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 29408 event pairs, 830 based on Foata normal form. 84/4153 useless extension candidates. Maximal degree in co-relation 20195. Up to 3366 conditions per place. [2024-01-31 16:04:39,392 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 194 selfloop transitions, 36 changer transitions 0/256 dead transitions. [2024-01-31 16:04:39,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 256 transitions, 3604 flow [2024-01-31 16:04:39,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:04:39,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:04:39,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 254 transitions. [2024-01-31 16:04:39,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4349315068493151 [2024-01-31 16:04:39,394 INFO L175 Difference]: Start difference. First operand has 222 places, 215 transitions, 2914 flow. Second operand 8 states and 254 transitions. [2024-01-31 16:04:39,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 256 transitions, 3604 flow [2024-01-31 16:04:39,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 256 transitions, 3516 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-01-31 16:04:39,495 INFO L231 Difference]: Finished difference. Result has 225 places, 228 transitions, 3045 flow [2024-01-31 16:04:39,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2834, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3045, PETRI_PLACES=225, PETRI_TRANSITIONS=228} [2024-01-31 16:04:39,496 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 148 predicate places. [2024-01-31 16:04:39,496 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 228 transitions, 3045 flow [2024-01-31 16:04:39,496 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) [2024-01-31 16:04:39,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:39,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:39,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-01-31 16:04:39,497 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:39,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:39,497 INFO L85 PathProgramCache]: Analyzing trace with hash -270546486, now seen corresponding path program 7 times [2024-01-31 16:04:39,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:39,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451496029] [2024-01-31 16:04:39,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:39,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:39,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:39,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:39,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:39,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451496029] [2024-01-31 16:04:39,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451496029] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:39,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:39,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:39,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950234707] [2024-01-31 16:04:39,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:39,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:39,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:39,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:39,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:39,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:39,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 228 transitions, 3045 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) [2024-01-31 16:04:39,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:39,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:39,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:40,550 INFO L124 PetriNetUnfolderBase]: 2386/4467 cut-off events. [2024-01-31 16:04:40,550 INFO L125 PetriNetUnfolderBase]: For 37818/38064 co-relation queries the response was YES. [2024-01-31 16:04:40,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20919 conditions, 4467 events. 2386/4467 cut-off events. For 37818/38064 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 30044 event pairs, 835 based on Foata normal form. 134/4339 useless extension candidates. Maximal degree in co-relation 20820. Up to 3336 conditions per place. [2024-01-31 16:04:40,597 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 182 selfloop transitions, 48 changer transitions 0/256 dead transitions. [2024-01-31 16:04:40,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 256 transitions, 3641 flow [2024-01-31 16:04:40,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:40,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:40,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 225 transitions. [2024-01-31 16:04:40,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44031311154598823 [2024-01-31 16:04:40,599 INFO L175 Difference]: Start difference. First operand has 225 places, 228 transitions, 3045 flow. Second operand 7 states and 225 transitions. [2024-01-31 16:04:40,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 256 transitions, 3641 flow [2024-01-31 16:04:40,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 256 transitions, 3599 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-01-31 16:04:40,711 INFO L231 Difference]: Finished difference. Result has 230 places, 232 transitions, 3166 flow [2024-01-31 16:04:40,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3004, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3166, PETRI_PLACES=230, PETRI_TRANSITIONS=232} [2024-01-31 16:04:40,712 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 153 predicate places. [2024-01-31 16:04:40,712 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 232 transitions, 3166 flow [2024-01-31 16:04:40,712 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) [2024-01-31 16:04:40,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:40,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:40,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-01-31 16:04:40,713 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:40,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:40,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1041594606, now seen corresponding path program 8 times [2024-01-31 16:04:40,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:40,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440922824] [2024-01-31 16:04:40,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:40,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:40,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:40,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:40,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:40,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440922824] [2024-01-31 16:04:40,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440922824] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:40,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:40,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:40,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082478152] [2024-01-31 16:04:40,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:40,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:40,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:40,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:40,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:40,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:40,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 232 transitions, 3166 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) [2024-01-31 16:04:40,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:40,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:40,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:41,880 INFO L124 PetriNetUnfolderBase]: 2402/4467 cut-off events. [2024-01-31 16:04:41,880 INFO L125 PetriNetUnfolderBase]: For 40199/40439 co-relation queries the response was YES. [2024-01-31 16:04:41,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21476 conditions, 4467 events. 2402/4467 cut-off events. For 40199/40439 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 29911 event pairs, 577 based on Foata normal form. 116/4309 useless extension candidates. Maximal degree in co-relation 21375. Up to 2037 conditions per place. [2024-01-31 16:04:41,926 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 122 selfloop transitions, 115 changer transitions 0/263 dead transitions. [2024-01-31 16:04:41,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 263 transitions, 3783 flow [2024-01-31 16:04:41,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:41,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:41,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 238 transitions. [2024-01-31 16:04:41,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4657534246575342 [2024-01-31 16:04:41,928 INFO L175 Difference]: Start difference. First operand has 230 places, 232 transitions, 3166 flow. Second operand 7 states and 238 transitions. [2024-01-31 16:04:41,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 263 transitions, 3783 flow [2024-01-31 16:04:42,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 263 transitions, 3679 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-01-31 16:04:42,042 INFO L231 Difference]: Finished difference. Result has 231 places, 232 transitions, 3312 flow [2024-01-31 16:04:42,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3066, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3312, PETRI_PLACES=231, PETRI_TRANSITIONS=232} [2024-01-31 16:04:42,043 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 154 predicate places. [2024-01-31 16:04:42,043 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 232 transitions, 3312 flow [2024-01-31 16:04:42,043 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) [2024-01-31 16:04:42,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:42,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:42,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-01-31 16:04:42,043 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:42,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:42,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1040941746, now seen corresponding path program 9 times [2024-01-31 16:04:42,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:42,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977894474] [2024-01-31 16:04:42,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:42,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:42,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:42,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:42,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:42,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977894474] [2024-01-31 16:04:42,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977894474] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:42,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:42,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:42,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76321764] [2024-01-31 16:04:42,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:42,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:42,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:42,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:42,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:42,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:42,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 232 transitions, 3312 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) [2024-01-31 16:04:42,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:42,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:42,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:43,140 INFO L124 PetriNetUnfolderBase]: 2358/4383 cut-off events. [2024-01-31 16:04:43,141 INFO L125 PetriNetUnfolderBase]: For 43202/43436 co-relation queries the response was YES. [2024-01-31 16:04:43,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21438 conditions, 4383 events. 2358/4383 cut-off events. For 43202/43436 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 29047 event pairs, 545 based on Foata normal form. 137/4262 useless extension candidates. Maximal degree in co-relation 21337. Up to 2025 conditions per place. [2024-01-31 16:04:43,187 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 127 selfloop transitions, 121 changer transitions 0/274 dead transitions. [2024-01-31 16:04:43,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 274 transitions, 3992 flow [2024-01-31 16:04:43,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:04:43,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:04:43,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 294 transitions. [2024-01-31 16:04:43,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4474885844748858 [2024-01-31 16:04:43,188 INFO L175 Difference]: Start difference. First operand has 231 places, 232 transitions, 3312 flow. Second operand 9 states and 294 transitions. [2024-01-31 16:04:43,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 274 transitions, 3992 flow [2024-01-31 16:04:43,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 274 transitions, 3738 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-01-31 16:04:43,303 INFO L231 Difference]: Finished difference. Result has 233 places, 232 transitions, 3327 flow [2024-01-31 16:04:43,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3066, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3327, PETRI_PLACES=233, PETRI_TRANSITIONS=232} [2024-01-31 16:04:43,306 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 156 predicate places. [2024-01-31 16:04:43,306 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 232 transitions, 3327 flow [2024-01-31 16:04:43,306 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) [2024-01-31 16:04:43,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:43,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:43,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-01-31 16:04:43,306 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:43,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:43,307 INFO L85 PathProgramCache]: Analyzing trace with hash -274114362, now seen corresponding path program 10 times [2024-01-31 16:04:43,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:43,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722361375] [2024-01-31 16:04:43,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:43,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:43,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:43,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:43,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:43,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722361375] [2024-01-31 16:04:43,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722361375] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:43,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:43,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:43,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106614525] [2024-01-31 16:04:43,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:43,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:43,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:43,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:43,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:43,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:43,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 232 transitions, 3327 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) [2024-01-31 16:04:43,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:43,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:43,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:44,412 INFO L124 PetriNetUnfolderBase]: 2308/4301 cut-off events. [2024-01-31 16:04:44,412 INFO L125 PetriNetUnfolderBase]: For 41142/41375 co-relation queries the response was YES. [2024-01-31 16:04:44,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20896 conditions, 4301 events. 2308/4301 cut-off events. For 41142/41375 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 28532 event pairs, 629 based on Foata normal form. 116/4136 useless extension candidates. Maximal degree in co-relation 20795. Up to 2748 conditions per place. [2024-01-31 16:04:44,450 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 137 selfloop transitions, 93 changer transitions 0/256 dead transitions. [2024-01-31 16:04:44,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 256 transitions, 3871 flow [2024-01-31 16:04:44,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:44,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:44,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 207 transitions. [2024-01-31 16:04:44,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4726027397260274 [2024-01-31 16:04:44,451 INFO L175 Difference]: Start difference. First operand has 233 places, 232 transitions, 3327 flow. Second operand 6 states and 207 transitions. [2024-01-31 16:04:44,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 256 transitions, 3871 flow [2024-01-31 16:04:44,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 256 transitions, 3607 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-01-31 16:04:44,551 INFO L231 Difference]: Finished difference. Result has 229 places, 232 transitions, 3303 flow [2024-01-31 16:04:44,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3063, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3303, PETRI_PLACES=229, PETRI_TRANSITIONS=232} [2024-01-31 16:04:44,553 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 152 predicate places. [2024-01-31 16:04:44,553 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 232 transitions, 3303 flow [2024-01-31 16:04:44,553 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) [2024-01-31 16:04:44,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:44,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:44,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-01-31 16:04:44,554 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:44,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:44,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1861315819, now seen corresponding path program 2 times [2024-01-31 16:04:44,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:44,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121804811] [2024-01-31 16:04:44,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:44,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:44,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:44,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:44,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:44,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121804811] [2024-01-31 16:04:44,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121804811] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:44,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:44,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:44,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697809424] [2024-01-31 16:04:44,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:44,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:44,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:44,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:44,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:44,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:44,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 232 transitions, 3303 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) [2024-01-31 16:04:44,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:44,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:44,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:45,412 INFO L124 PetriNetUnfolderBase]: 2272/4327 cut-off events. [2024-01-31 16:04:45,412 INFO L125 PetriNetUnfolderBase]: For 38389/38598 co-relation queries the response was YES. [2024-01-31 16:04:45,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20415 conditions, 4327 events. 2272/4327 cut-off events. For 38389/38598 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 29255 event pairs, 822 based on Foata normal form. 76/4120 useless extension candidates. Maximal degree in co-relation 20315. Up to 3333 conditions per place. [2024-01-31 16:04:45,459 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 196 selfloop transitions, 40 changer transitions 0/262 dead transitions. [2024-01-31 16:04:45,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 262 transitions, 3906 flow [2024-01-31 16:04:45,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:45,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:45,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 229 transitions. [2024-01-31 16:04:45,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4481409001956947 [2024-01-31 16:04:45,460 INFO L175 Difference]: Start difference. First operand has 229 places, 232 transitions, 3303 flow. Second operand 7 states and 229 transitions. [2024-01-31 16:04:45,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 262 transitions, 3906 flow [2024-01-31 16:04:45,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 262 transitions, 3716 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-01-31 16:04:45,561 INFO L231 Difference]: Finished difference. Result has 232 places, 236 transitions, 3250 flow [2024-01-31 16:04:45,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3113, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3250, PETRI_PLACES=232, PETRI_TRANSITIONS=236} [2024-01-31 16:04:45,562 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 155 predicate places. [2024-01-31 16:04:45,562 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 236 transitions, 3250 flow [2024-01-31 16:04:45,562 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) [2024-01-31 16:04:45,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:45,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:45,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-01-31 16:04:45,562 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:45,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:45,563 INFO L85 PathProgramCache]: Analyzing trace with hash 670526463, now seen corresponding path program 3 times [2024-01-31 16:04:45,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:45,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612593203] [2024-01-31 16:04:45,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:45,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:45,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:45,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:45,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:45,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612593203] [2024-01-31 16:04:45,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612593203] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:45,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:45,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:45,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897576526] [2024-01-31 16:04:45,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:45,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:45,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:45,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:45,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:45,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:45,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 236 transitions, 3250 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) [2024-01-31 16:04:45,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:45,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:45,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:46,449 INFO L124 PetriNetUnfolderBase]: 2302/4365 cut-off events. [2024-01-31 16:04:46,449 INFO L125 PetriNetUnfolderBase]: For 35786/36008 co-relation queries the response was YES. [2024-01-31 16:04:46,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20348 conditions, 4365 events. 2302/4365 cut-off events. For 35786/36008 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 29317 event pairs, 777 based on Foata normal form. 82/4157 useless extension candidates. Maximal degree in co-relation 20246. Up to 3361 conditions per place. [2024-01-31 16:04:46,498 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 195 selfloop transitions, 41 changer transitions 0/262 dead transitions. [2024-01-31 16:04:46,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 262 transitions, 3835 flow [2024-01-31 16:04:46,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:46,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:46,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 203 transitions. [2024-01-31 16:04:46,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634703196347032 [2024-01-31 16:04:46,500 INFO L175 Difference]: Start difference. First operand has 232 places, 236 transitions, 3250 flow. Second operand 6 states and 203 transitions. [2024-01-31 16:04:46,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 262 transitions, 3835 flow [2024-01-31 16:04:46,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 262 transitions, 3775 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-01-31 16:04:46,604 INFO L231 Difference]: Finished difference. Result has 234 places, 238 transitions, 3303 flow [2024-01-31 16:04:46,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3194, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3303, PETRI_PLACES=234, PETRI_TRANSITIONS=238} [2024-01-31 16:04:46,605 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 157 predicate places. [2024-01-31 16:04:46,605 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 238 transitions, 3303 flow [2024-01-31 16:04:46,605 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) [2024-01-31 16:04:46,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:46,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:46,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-01-31 16:04:46,606 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:46,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:46,606 INFO L85 PathProgramCache]: Analyzing trace with hash 671600613, now seen corresponding path program 4 times [2024-01-31 16:04:46,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:46,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456299910] [2024-01-31 16:04:46,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:46,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:46,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:46,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:46,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:46,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456299910] [2024-01-31 16:04:46,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456299910] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:46,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:46,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:46,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959468353] [2024-01-31 16:04:46,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:46,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:46,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:46,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:46,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:46,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:46,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 238 transitions, 3303 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) [2024-01-31 16:04:46,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:46,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:46,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:47,473 INFO L124 PetriNetUnfolderBase]: 2296/4352 cut-off events. [2024-01-31 16:04:47,474 INFO L125 PetriNetUnfolderBase]: For 36422/36614 co-relation queries the response was YES. [2024-01-31 16:04:47,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20329 conditions, 4352 events. 2296/4352 cut-off events. For 36422/36614 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 29246 event pairs, 782 based on Foata normal form. 74/4130 useless extension candidates. Maximal degree in co-relation 20227. Up to 3361 conditions per place. [2024-01-31 16:04:47,526 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 193 selfloop transitions, 39 changer transitions 0/258 dead transitions. [2024-01-31 16:04:47,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 258 transitions, 3843 flow [2024-01-31 16:04:47,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:47,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:47,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 198 transitions. [2024-01-31 16:04:47,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520547945205479 [2024-01-31 16:04:47,527 INFO L175 Difference]: Start difference. First operand has 234 places, 238 transitions, 3303 flow. Second operand 6 states and 198 transitions. [2024-01-31 16:04:47,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 258 transitions, 3843 flow [2024-01-31 16:04:47,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 258 transitions, 3784 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-01-31 16:04:47,625 INFO L231 Difference]: Finished difference. Result has 236 places, 238 transitions, 3327 flow [2024-01-31 16:04:47,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3244, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3327, PETRI_PLACES=236, PETRI_TRANSITIONS=238} [2024-01-31 16:04:47,626 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 159 predicate places. [2024-01-31 16:04:47,626 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 238 transitions, 3327 flow [2024-01-31 16:04:47,626 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) [2024-01-31 16:04:47,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:47,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:47,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-01-31 16:04:47,627 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:47,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:47,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1188406002, now seen corresponding path program 1 times [2024-01-31 16:04:47,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:47,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258264996] [2024-01-31 16:04:47,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:47,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:47,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:47,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:47,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:47,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258264996] [2024-01-31 16:04:47,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258264996] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:47,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:47,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:47,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878652403] [2024-01-31 16:04:47,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:47,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:47,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:47,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:47,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:47,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:47,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 238 transitions, 3327 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) [2024-01-31 16:04:47,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:47,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:47,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:48,487 INFO L124 PetriNetUnfolderBase]: 1787/3454 cut-off events. [2024-01-31 16:04:48,487 INFO L125 PetriNetUnfolderBase]: For 29896/29919 co-relation queries the response was YES. [2024-01-31 16:04:48,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16183 conditions, 3454 events. 1787/3454 cut-off events. For 29896/29919 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 23193 event pairs, 649 based on Foata normal form. 19/3311 useless extension candidates. Maximal degree in co-relation 16081. Up to 2792 conditions per place. [2024-01-31 16:04:48,520 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 199 selfloop transitions, 65 changer transitions 0/284 dead transitions. [2024-01-31 16:04:48,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 284 transitions, 4291 flow [2024-01-31 16:04:48,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:04:48,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:04:48,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 277 transitions. [2024-01-31 16:04:48,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4216133942161339 [2024-01-31 16:04:48,522 INFO L175 Difference]: Start difference. First operand has 236 places, 238 transitions, 3327 flow. Second operand 9 states and 277 transitions. [2024-01-31 16:04:48,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 284 transitions, 4291 flow [2024-01-31 16:04:48,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 284 transitions, 4209 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-01-31 16:04:48,607 INFO L231 Difference]: Finished difference. Result has 244 places, 264 transitions, 3806 flow [2024-01-31 16:04:48,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3249, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3806, PETRI_PLACES=244, PETRI_TRANSITIONS=264} [2024-01-31 16:04:48,608 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 167 predicate places. [2024-01-31 16:04:48,608 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 264 transitions, 3806 flow [2024-01-31 16:04:48,608 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) [2024-01-31 16:04:48,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:48,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:48,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-01-31 16:04:48,608 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:48,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:48,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1546796256, now seen corresponding path program 1 times [2024-01-31 16:04:48,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:48,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455877571] [2024-01-31 16:04:48,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:48,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:48,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:48,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:48,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:48,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455877571] [2024-01-31 16:04:48,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455877571] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:48,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:48,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:48,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516853267] [2024-01-31 16:04:48,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:48,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:48,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:48,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:48,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:48,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:04:48,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 264 transitions, 3806 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) [2024-01-31 16:04:48,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:48,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:04:48,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:49,431 INFO L124 PetriNetUnfolderBase]: 1538/3147 cut-off events. [2024-01-31 16:04:49,431 INFO L125 PetriNetUnfolderBase]: For 33337/33443 co-relation queries the response was YES. [2024-01-31 16:04:49,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15605 conditions, 3147 events. 1538/3147 cut-off events. For 33337/33443 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 22054 event pairs, 420 based on Foata normal form. 52/3038 useless extension candidates. Maximal degree in co-relation 15499. Up to 2260 conditions per place. [2024-01-31 16:04:49,464 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 203 selfloop transitions, 40 changer transitions 0/282 dead transitions. [2024-01-31 16:04:49,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 282 transitions, 4375 flow [2024-01-31 16:04:49,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:49,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:49,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 279 transitions. [2024-01-31 16:04:49,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5459882583170255 [2024-01-31 16:04:49,466 INFO L175 Difference]: Start difference. First operand has 244 places, 264 transitions, 3806 flow. Second operand 7 states and 279 transitions. [2024-01-31 16:04:49,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 282 transitions, 4375 flow [2024-01-31 16:04:49,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 282 transitions, 4313 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-01-31 16:04:49,568 INFO L231 Difference]: Finished difference. Result has 249 places, 266 transitions, 3869 flow [2024-01-31 16:04:49,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3744, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3869, PETRI_PLACES=249, PETRI_TRANSITIONS=266} [2024-01-31 16:04:49,569 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 172 predicate places. [2024-01-31 16:04:49,569 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 266 transitions, 3869 flow [2024-01-31 16:04:49,569 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) [2024-01-31 16:04:49,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:49,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:49,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-01-31 16:04:49,570 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:49,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:49,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1397308596, now seen corresponding path program 2 times [2024-01-31 16:04:49,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:49,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185302112] [2024-01-31 16:04:49,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:49,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:49,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:49,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:49,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:49,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185302112] [2024-01-31 16:04:49,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185302112] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:49,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:49,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:49,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556550661] [2024-01-31 16:04:49,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:49,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:49,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:49,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:49,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:49,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:49,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 266 transitions, 3869 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) [2024-01-31 16:04:49,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:49,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:49,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:50,467 INFO L124 PetriNetUnfolderBase]: 1787/3452 cut-off events. [2024-01-31 16:04:50,468 INFO L125 PetriNetUnfolderBase]: For 32703/32726 co-relation queries the response was YES. [2024-01-31 16:04:50,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16673 conditions, 3452 events. 1787/3452 cut-off events. For 32703/32726 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 23239 event pairs, 646 based on Foata normal form. 19/3352 useless extension candidates. Maximal degree in co-relation 16566. Up to 2724 conditions per place. [2024-01-31 16:04:50,509 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 204 selfloop transitions, 74 changer transitions 0/298 dead transitions. [2024-01-31 16:04:50,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 298 transitions, 4649 flow [2024-01-31 16:04:50,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:04:50,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:04:50,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 299 transitions. [2024-01-31 16:04:50,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4095890410958904 [2024-01-31 16:04:50,518 INFO L175 Difference]: Start difference. First operand has 249 places, 266 transitions, 3869 flow. Second operand 10 states and 299 transitions. [2024-01-31 16:04:50,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 298 transitions, 4649 flow [2024-01-31 16:04:50,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 298 transitions, 4542 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-01-31 16:04:50,619 INFO L231 Difference]: Finished difference. Result has 255 places, 277 transitions, 4103 flow [2024-01-31 16:04:50,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3762, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4103, PETRI_PLACES=255, PETRI_TRANSITIONS=277} [2024-01-31 16:04:50,620 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 178 predicate places. [2024-01-31 16:04:50,620 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 277 transitions, 4103 flow [2024-01-31 16:04:50,620 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) [2024-01-31 16:04:50,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:50,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:50,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-01-31 16:04:50,621 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:50,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:50,621 INFO L85 PathProgramCache]: Analyzing trace with hash -714349246, now seen corresponding path program 1 times [2024-01-31 16:04:50,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:50,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940779362] [2024-01-31 16:04:50,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:50,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:50,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:50,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:50,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:50,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940779362] [2024-01-31 16:04:50,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940779362] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:50,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:50,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:50,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346579330] [2024-01-31 16:04:50,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:50,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:50,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:50,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:50,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:50,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:04:50,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 277 transitions, 4103 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) [2024-01-31 16:04:50,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:50,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:04:50,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:51,437 INFO L124 PetriNetUnfolderBase]: 1487/3056 cut-off events. [2024-01-31 16:04:51,438 INFO L125 PetriNetUnfolderBase]: For 35579/35681 co-relation queries the response was YES. [2024-01-31 16:04:51,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15582 conditions, 3056 events. 1487/3056 cut-off events. For 35579/35681 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 21380 event pairs, 452 based on Foata normal form. 56/2965 useless extension candidates. Maximal degree in co-relation 15474. Up to 2207 conditions per place. [2024-01-31 16:04:51,481 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 220 selfloop transitions, 30 changer transitions 0/289 dead transitions. [2024-01-31 16:04:51,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 289 transitions, 4661 flow [2024-01-31 16:04:51,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:04:51,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:04:51,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 208 transitions. [2024-01-31 16:04:51,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5698630136986301 [2024-01-31 16:04:51,482 INFO L175 Difference]: Start difference. First operand has 255 places, 277 transitions, 4103 flow. Second operand 5 states and 208 transitions. [2024-01-31 16:04:51,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 289 transitions, 4661 flow [2024-01-31 16:04:51,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 289 transitions, 4557 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-01-31 16:04:51,602 INFO L231 Difference]: Finished difference. Result has 258 places, 279 transitions, 4107 flow [2024-01-31 16:04:51,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3999, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4107, PETRI_PLACES=258, PETRI_TRANSITIONS=279} [2024-01-31 16:04:51,603 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 181 predicate places. [2024-01-31 16:04:51,604 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 279 transitions, 4107 flow [2024-01-31 16:04:51,604 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) [2024-01-31 16:04:51,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:51,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:51,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-01-31 16:04:51,604 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:51,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:51,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1368953142, now seen corresponding path program 1 times [2024-01-31 16:04:51,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:51,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505766739] [2024-01-31 16:04:51,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:51,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:51,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:51,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:51,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:51,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505766739] [2024-01-31 16:04:51,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505766739] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:51,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:51,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:51,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304821215] [2024-01-31 16:04:51,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:51,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:51,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:51,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:51,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:51,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:04:51,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 279 transitions, 4107 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) [2024-01-31 16:04:51,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:51,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:04:51,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:52,399 INFO L124 PetriNetUnfolderBase]: 1516/3121 cut-off events. [2024-01-31 16:04:52,399 INFO L125 PetriNetUnfolderBase]: For 37013/37116 co-relation queries the response was YES. [2024-01-31 16:04:52,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15815 conditions, 3121 events. 1516/3121 cut-off events. For 37013/37116 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 21759 event pairs, 351 based on Foata normal form. 56/3049 useless extension candidates. Maximal degree in co-relation 15704. Up to 1868 conditions per place. [2024-01-31 16:04:52,430 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 185 selfloop transitions, 87 changer transitions 0/311 dead transitions. [2024-01-31 16:04:52,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 311 transitions, 4852 flow [2024-01-31 16:04:52,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:04:52,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:04:52,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 328 transitions. [2024-01-31 16:04:52,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5616438356164384 [2024-01-31 16:04:52,431 INFO L175 Difference]: Start difference. First operand has 258 places, 279 transitions, 4107 flow. Second operand 8 states and 328 transitions. [2024-01-31 16:04:52,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 311 transitions, 4852 flow [2024-01-31 16:04:52,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 311 transitions, 4786 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-01-31 16:04:52,554 INFO L231 Difference]: Finished difference. Result has 265 places, 285 transitions, 4286 flow [2024-01-31 16:04:52,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4041, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4286, PETRI_PLACES=265, PETRI_TRANSITIONS=285} [2024-01-31 16:04:52,555 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 188 predicate places. [2024-01-31 16:04:52,555 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 285 transitions, 4286 flow [2024-01-31 16:04:52,555 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) [2024-01-31 16:04:52,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:52,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:52,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-01-31 16:04:52,556 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:52,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:52,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1368601452, now seen corresponding path program 1 times [2024-01-31 16:04:52,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:52,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768685603] [2024-01-31 16:04:52,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:52,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:52,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:52,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:52,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:52,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768685603] [2024-01-31 16:04:52,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768685603] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:52,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:52,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:52,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174119885] [2024-01-31 16:04:52,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:52,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:52,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:52,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:52,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:52,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:52,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 285 transitions, 4286 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) [2024-01-31 16:04:52,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:52,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:52,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:53,536 INFO L124 PetriNetUnfolderBase]: 1833/3512 cut-off events. [2024-01-31 16:04:53,536 INFO L125 PetriNetUnfolderBase]: For 37400/37423 co-relation queries the response was YES. [2024-01-31 16:04:53,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17706 conditions, 3512 events. 1833/3512 cut-off events. For 37400/37423 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 23360 event pairs, 560 based on Foata normal form. 19/3429 useless extension candidates. Maximal degree in co-relation 17593. Up to 2715 conditions per place. [2024-01-31 16:04:53,582 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 257 selfloop transitions, 51 changer transitions 0/328 dead transitions. [2024-01-31 16:04:53,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 328 transitions, 5158 flow [2024-01-31 16:04:53,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:04:53,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:04:53,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 258 transitions. [2024-01-31 16:04:53,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417808219178082 [2024-01-31 16:04:53,584 INFO L175 Difference]: Start difference. First operand has 265 places, 285 transitions, 4286 flow. Second operand 8 states and 258 transitions. [2024-01-31 16:04:53,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 328 transitions, 5158 flow [2024-01-31 16:04:53,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 328 transitions, 5020 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-01-31 16:04:53,720 INFO L231 Difference]: Finished difference. Result has 270 places, 298 transitions, 4418 flow [2024-01-31 16:04:53,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4150, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4418, PETRI_PLACES=270, PETRI_TRANSITIONS=298} [2024-01-31 16:04:53,721 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 193 predicate places. [2024-01-31 16:04:53,721 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 298 transitions, 4418 flow [2024-01-31 16:04:53,722 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) [2024-01-31 16:04:53,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:53,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:53,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-01-31 16:04:53,722 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:53,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:53,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1392170400, now seen corresponding path program 2 times [2024-01-31 16:04:53,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:53,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552886906] [2024-01-31 16:04:53,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:53,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:53,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:53,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:53,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552886906] [2024-01-31 16:04:53,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552886906] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:53,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:53,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:53,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070599653] [2024-01-31 16:04:53,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:53,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:53,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:53,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:53,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:53,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:04:53,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 298 transitions, 4418 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) [2024-01-31 16:04:53,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:53,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:04:53,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:54,561 INFO L124 PetriNetUnfolderBase]: 1557/3209 cut-off events. [2024-01-31 16:04:54,562 INFO L125 PetriNetUnfolderBase]: For 37758/37859 co-relation queries the response was YES. [2024-01-31 16:04:54,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16568 conditions, 3209 events. 1557/3209 cut-off events. For 37758/37859 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 22658 event pairs, 286 based on Foata normal form. 55/3130 useless extension candidates. Maximal degree in co-relation 16453. Up to 1852 conditions per place. [2024-01-31 16:04:54,598 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 189 selfloop transitions, 97 changer transitions 0/325 dead transitions. [2024-01-31 16:04:54,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 325 transitions, 5122 flow [2024-01-31 16:04:54,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:04:54,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:04:54,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 327 transitions. [2024-01-31 16:04:54,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.559931506849315 [2024-01-31 16:04:54,599 INFO L175 Difference]: Start difference. First operand has 270 places, 298 transitions, 4418 flow. Second operand 8 states and 327 transitions. [2024-01-31 16:04:54,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 325 transitions, 5122 flow [2024-01-31 16:04:54,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 325 transitions, 5055 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-01-31 16:04:54,722 INFO L231 Difference]: Finished difference. Result has 273 places, 299 transitions, 4558 flow [2024-01-31 16:04:54,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4351, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4558, PETRI_PLACES=273, PETRI_TRANSITIONS=299} [2024-01-31 16:04:54,723 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 196 predicate places. [2024-01-31 16:04:54,723 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 299 transitions, 4558 flow [2024-01-31 16:04:54,724 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) [2024-01-31 16:04:54,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:54,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:54,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-01-31 16:04:54,724 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:54,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:54,724 INFO L85 PathProgramCache]: Analyzing trace with hash 928660008, now seen corresponding path program 2 times [2024-01-31 16:04:54,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:54,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803158538] [2024-01-31 16:04:54,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:54,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:54,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:54,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:54,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:54,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803158538] [2024-01-31 16:04:54,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803158538] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:54,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:54,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:54,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498869161] [2024-01-31 16:04:54,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:54,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:54,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:54,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:54,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:54,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:54,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 299 transitions, 4558 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) [2024-01-31 16:04:54,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:54,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:54,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:55,666 INFO L124 PetriNetUnfolderBase]: 1804/3461 cut-off events. [2024-01-31 16:04:55,667 INFO L125 PetriNetUnfolderBase]: For 36749/36772 co-relation queries the response was YES. [2024-01-31 16:04:55,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17595 conditions, 3461 events. 1804/3461 cut-off events. For 36749/36772 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 22986 event pairs, 555 based on Foata normal form. 27/3386 useless extension candidates. Maximal degree in co-relation 17481. Up to 2700 conditions per place. [2024-01-31 16:04:55,707 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 250 selfloop transitions, 51 changer transitions 0/321 dead transitions. [2024-01-31 16:04:55,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 321 transitions, 5223 flow [2024-01-31 16:04:55,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:55,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:55,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 224 transitions. [2024-01-31 16:04:55,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4383561643835616 [2024-01-31 16:04:55,708 INFO L175 Difference]: Start difference. First operand has 273 places, 299 transitions, 4558 flow. Second operand 7 states and 224 transitions. [2024-01-31 16:04:55,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 321 transitions, 5223 flow [2024-01-31 16:04:55,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 321 transitions, 5069 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-01-31 16:04:55,870 INFO L231 Difference]: Finished difference. Result has 275 places, 299 transitions, 4515 flow [2024-01-31 16:04:55,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4404, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4515, PETRI_PLACES=275, PETRI_TRANSITIONS=299} [2024-01-31 16:04:55,871 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 198 predicate places. [2024-01-31 16:04:55,871 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 299 transitions, 4515 flow [2024-01-31 16:04:55,871 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) [2024-01-31 16:04:55,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:55,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:55,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-01-31 16:04:55,871 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:55,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:55,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1446960790, now seen corresponding path program 3 times [2024-01-31 16:04:55,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:55,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090202233] [2024-01-31 16:04:55,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:55,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:55,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:56,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:56,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:56,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090202233] [2024-01-31 16:04:56,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090202233] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:56,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:56,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:56,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721873587] [2024-01-31 16:04:56,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:56,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:56,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:56,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:56,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:56,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:56,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 299 transitions, 4515 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) [2024-01-31 16:04:56,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:56,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:56,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:56,999 INFO L124 PetriNetUnfolderBase]: 1814/3479 cut-off events. [2024-01-31 16:04:56,999 INFO L125 PetriNetUnfolderBase]: For 36512/36535 co-relation queries the response was YES. [2024-01-31 16:04:57,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17589 conditions, 3479 events. 1814/3479 cut-off events. For 36512/36535 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 23145 event pairs, 557 based on Foata normal form. 19/3396 useless extension candidates. Maximal degree in co-relation 17474. Up to 2708 conditions per place. [2024-01-31 16:04:57,059 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 258 selfloop transitions, 45 changer transitions 0/323 dead transitions. [2024-01-31 16:04:57,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 323 transitions, 5208 flow [2024-01-31 16:04:57,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:57,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:57,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 225 transitions. [2024-01-31 16:04:57,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44031311154598823 [2024-01-31 16:04:57,061 INFO L175 Difference]: Start difference. First operand has 275 places, 299 transitions, 4515 flow. Second operand 7 states and 225 transitions. [2024-01-31 16:04:57,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 323 transitions, 5208 flow [2024-01-31 16:04:57,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 323 transitions, 5105 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-01-31 16:04:57,258 INFO L231 Difference]: Finished difference. Result has 276 places, 301 transitions, 4529 flow [2024-01-31 16:04:57,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4414, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4529, PETRI_PLACES=276, PETRI_TRANSITIONS=301} [2024-01-31 16:04:57,259 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 199 predicate places. [2024-01-31 16:04:57,260 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 301 transitions, 4529 flow [2024-01-31 16:04:57,260 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) [2024-01-31 16:04:57,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:57,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:57,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-01-31 16:04:57,260 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:57,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:57,261 INFO L85 PathProgramCache]: Analyzing trace with hash -900335302, now seen corresponding path program 1 times [2024-01-31 16:04:57,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:57,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256371980] [2024-01-31 16:04:57,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:57,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:57,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:57,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:57,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256371980] [2024-01-31 16:04:57,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256371980] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:57,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:57,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:57,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004415433] [2024-01-31 16:04:57,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:57,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:57,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:57,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:57,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:57,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:04:57,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 301 transitions, 4529 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) [2024-01-31 16:04:57,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:57,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:04:57,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:58,307 INFO L124 PetriNetUnfolderBase]: 1546/3184 cut-off events. [2024-01-31 16:04:58,307 INFO L125 PetriNetUnfolderBase]: For 39234/39334 co-relation queries the response was YES. [2024-01-31 16:04:58,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16432 conditions, 3184 events. 1546/3184 cut-off events. For 39234/39334 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 22496 event pairs, 445 based on Foata normal form. 47/3087 useless extension candidates. Maximal degree in co-relation 16318. Up to 1983 conditions per place. [2024-01-31 16:04:58,346 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 232 selfloop transitions, 81 changer transitions 0/352 dead transitions. [2024-01-31 16:04:58,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 352 transitions, 5636 flow [2024-01-31 16:04:58,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:04:58,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:04:58,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 330 transitions. [2024-01-31 16:04:58,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.565068493150685 [2024-01-31 16:04:58,350 INFO L175 Difference]: Start difference. First operand has 276 places, 301 transitions, 4529 flow. Second operand 8 states and 330 transitions. [2024-01-31 16:04:58,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 352 transitions, 5636 flow [2024-01-31 16:04:58,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 352 transitions, 5563 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-01-31 16:04:58,505 INFO L231 Difference]: Finished difference. Result has 280 places, 316 transitions, 4851 flow [2024-01-31 16:04:58,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4456, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4851, PETRI_PLACES=280, PETRI_TRANSITIONS=316} [2024-01-31 16:04:58,506 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 203 predicate places. [2024-01-31 16:04:58,507 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 316 transitions, 4851 flow [2024-01-31 16:04:58,507 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) [2024-01-31 16:04:58,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:58,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:58,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-01-31 16:04:58,508 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:58,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:58,508 INFO L85 PathProgramCache]: Analyzing trace with hash -817182764, now seen corresponding path program 4 times [2024-01-31 16:04:58,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:58,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060267178] [2024-01-31 16:04:58,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:58,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:58,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:58,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:58,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:58,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060267178] [2024-01-31 16:04:58,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060267178] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:58,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:58,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:58,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910850875] [2024-01-31 16:04:58,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:58,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:58,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:58,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:58,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:58,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:58,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 316 transitions, 4851 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) [2024-01-31 16:04:58,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:58,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:58,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:59,666 INFO L124 PetriNetUnfolderBase]: 1816/3474 cut-off events. [2024-01-31 16:04:59,666 INFO L125 PetriNetUnfolderBase]: For 38677/38700 co-relation queries the response was YES. [2024-01-31 16:04:59,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17902 conditions, 3474 events. 1816/3474 cut-off events. For 38677/38700 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 23188 event pairs, 575 based on Foata normal form. 19/3388 useless extension candidates. Maximal degree in co-relation 17787. Up to 2728 conditions per place. [2024-01-31 16:04:59,705 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 269 selfloop transitions, 45 changer transitions 0/334 dead transitions. [2024-01-31 16:04:59,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 334 transitions, 5515 flow [2024-01-31 16:04:59,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:59,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:59,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 221 transitions. [2024-01-31 16:04:59,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4324853228962818 [2024-01-31 16:04:59,707 INFO L175 Difference]: Start difference. First operand has 280 places, 316 transitions, 4851 flow. Second operand 7 states and 221 transitions. [2024-01-31 16:04:59,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 334 transitions, 5515 flow [2024-01-31 16:04:59,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 334 transitions, 5397 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-01-31 16:04:59,834 INFO L231 Difference]: Finished difference. Result has 275 places, 315 transitions, 4801 flow [2024-01-31 16:04:59,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4711, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4801, PETRI_PLACES=275, PETRI_TRANSITIONS=315} [2024-01-31 16:04:59,835 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 198 predicate places. [2024-01-31 16:04:59,835 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 315 transitions, 4801 flow [2024-01-31 16:04:59,835 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) [2024-01-31 16:04:59,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:59,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:59,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-01-31 16:04:59,836 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:59,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:59,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1820271472, now seen corresponding path program 2 times [2024-01-31 16:04:59,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:59,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865927471] [2024-01-31 16:04:59,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:59,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:59,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:59,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:59,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:59,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865927471] [2024-01-31 16:04:59,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865927471] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:59,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:59,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:00,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896800767] [2024-01-31 16:05:00,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:00,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:00,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:00,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:00,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:00,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:05:00,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 315 transitions, 4801 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) [2024-01-31 16:05:00,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:00,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:05:00,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:00,586 INFO L124 PetriNetUnfolderBase]: 1548/3188 cut-off events. [2024-01-31 16:05:00,586 INFO L125 PetriNetUnfolderBase]: For 40614/40714 co-relation queries the response was YES. [2024-01-31 16:05:00,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16508 conditions, 3188 events. 1548/3188 cut-off events. For 40614/40714 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 22550 event pairs, 437 based on Foata normal form. 47/3092 useless extension candidates. Maximal degree in co-relation 16400. Up to 1969 conditions per place. [2024-01-31 16:05:00,619 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 226 selfloop transitions, 88 changer transitions 0/353 dead transitions. [2024-01-31 16:05:00,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 353 transitions, 5715 flow [2024-01-31 16:05:00,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:00,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:00,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 294 transitions. [2024-01-31 16:05:00,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5753424657534246 [2024-01-31 16:05:00,621 INFO L175 Difference]: Start difference. First operand has 275 places, 315 transitions, 4801 flow. Second operand 7 states and 294 transitions. [2024-01-31 16:05:00,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 353 transitions, 5715 flow [2024-01-31 16:05:00,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 353 transitions, 5592 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-31 16:05:00,737 INFO L231 Difference]: Finished difference. Result has 277 places, 320 transitions, 4927 flow [2024-01-31 16:05:00,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4678, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4927, PETRI_PLACES=277, PETRI_TRANSITIONS=320} [2024-01-31 16:05:00,739 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 200 predicate places. [2024-01-31 16:05:00,739 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 320 transitions, 4927 flow [2024-01-31 16:05:00,739 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) [2024-01-31 16:05:00,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:00,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:00,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-01-31 16:05:00,739 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:00,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:00,740 INFO L85 PathProgramCache]: Analyzing trace with hash -251349052, now seen corresponding path program 1 times [2024-01-31 16:05:00,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:00,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211755688] [2024-01-31 16:05:00,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:00,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:00,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:00,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:00,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:00,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211755688] [2024-01-31 16:05:00,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211755688] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:00,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:00,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:00,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703183269] [2024-01-31 16:05:00,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:00,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:00,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:00,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:00,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:01,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:01,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 320 transitions, 4927 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) [2024-01-31 16:05:01,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:01,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:01,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:01,925 INFO L124 PetriNetUnfolderBase]: 2355/4428 cut-off events. [2024-01-31 16:05:01,925 INFO L125 PetriNetUnfolderBase]: For 49910/50119 co-relation queries the response was YES. [2024-01-31 16:05:01,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22668 conditions, 4428 events. 2355/4428 cut-off events. For 49910/50119 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 29678 event pairs, 701 based on Foata normal form. 78/4291 useless extension candidates. Maximal degree in co-relation 22558. Up to 3498 conditions per place. [2024-01-31 16:05:01,977 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 281 selfloop transitions, 56 changer transitions 0/364 dead transitions. [2024-01-31 16:05:01,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 364 transitions, 5912 flow [2024-01-31 16:05:01,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:01,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:01,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 258 transitions. [2024-01-31 16:05:01,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417808219178082 [2024-01-31 16:05:01,979 INFO L175 Difference]: Start difference. First operand has 277 places, 320 transitions, 4927 flow. Second operand 8 states and 258 transitions. [2024-01-31 16:05:01,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 364 transitions, 5912 flow [2024-01-31 16:05:02,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 364 transitions, 5779 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-01-31 16:05:02,159 INFO L231 Difference]: Finished difference. Result has 282 places, 336 transitions, 5172 flow [2024-01-31 16:05:02,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4797, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5172, PETRI_PLACES=282, PETRI_TRANSITIONS=336} [2024-01-31 16:05:02,160 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 205 predicate places. [2024-01-31 16:05:02,160 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 336 transitions, 5172 flow [2024-01-31 16:05:02,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:02,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:02,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:02,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-01-31 16:05:02,161 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:02,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:02,161 INFO L85 PathProgramCache]: Analyzing trace with hash 887775766, now seen corresponding path program 3 times [2024-01-31 16:05:02,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:02,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029819179] [2024-01-31 16:05:02,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:02,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:02,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:02,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:02,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:02,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029819179] [2024-01-31 16:05:02,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029819179] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:02,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:02,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:02,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615040475] [2024-01-31 16:05:02,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:02,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:02,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:02,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:02,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:02,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:05:02,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 336 transitions, 5172 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) [2024-01-31 16:05:02,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:02,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:05:02,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:02,965 INFO L124 PetriNetUnfolderBase]: 1603/3284 cut-off events. [2024-01-31 16:05:02,965 INFO L125 PetriNetUnfolderBase]: For 42745/42856 co-relation queries the response was YES. [2024-01-31 16:05:02,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17315 conditions, 3284 events. 1603/3284 cut-off events. For 42745/42856 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 23275 event pairs, 447 based on Foata normal form. 44/3171 useless extension candidates. Maximal degree in co-relation 17204. Up to 2211 conditions per place. [2024-01-31 16:05:02,998 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 242 selfloop transitions, 84 changer transitions 0/365 dead transitions. [2024-01-31 16:05:02,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 365 transitions, 6053 flow [2024-01-31 16:05:02,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:05:02,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:05:02,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 254 transitions. [2024-01-31 16:05:02,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5799086757990868 [2024-01-31 16:05:02,999 INFO L175 Difference]: Start difference. First operand has 282 places, 336 transitions, 5172 flow. Second operand 6 states and 254 transitions. [2024-01-31 16:05:02,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 365 transitions, 6053 flow [2024-01-31 16:05:03,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 365 transitions, 6006 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-01-31 16:05:03,148 INFO L231 Difference]: Finished difference. Result has 286 places, 344 transitions, 5461 flow [2024-01-31 16:05:03,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5125, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5461, PETRI_PLACES=286, PETRI_TRANSITIONS=344} [2024-01-31 16:05:03,149 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 209 predicate places. [2024-01-31 16:05:03,149 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 344 transitions, 5461 flow [2024-01-31 16:05:03,149 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) [2024-01-31 16:05:03,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:03,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:03,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-01-31 16:05:03,150 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:03,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:03,150 INFO L85 PathProgramCache]: Analyzing trace with hash -120412422, now seen corresponding path program 4 times [2024-01-31 16:05:03,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:03,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231410871] [2024-01-31 16:05:03,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:03,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:03,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:03,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:03,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:03,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231410871] [2024-01-31 16:05:03,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231410871] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:03,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:03,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:03,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861975868] [2024-01-31 16:05:03,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:03,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:03,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:03,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:03,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:03,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:05:03,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 344 transitions, 5461 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) [2024-01-31 16:05:03,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:03,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:05:03,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:03,947 INFO L124 PetriNetUnfolderBase]: 1597/3275 cut-off events. [2024-01-31 16:05:03,948 INFO L125 PetriNetUnfolderBase]: For 45084/45194 co-relation queries the response was YES. [2024-01-31 16:05:03,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17533 conditions, 3275 events. 1597/3275 cut-off events. For 45084/45194 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 23201 event pairs, 437 based on Foata normal form. 45/3162 useless extension candidates. Maximal degree in co-relation 17420. Up to 2209 conditions per place. [2024-01-31 16:05:03,984 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 238 selfloop transitions, 90 changer transitions 0/367 dead transitions. [2024-01-31 16:05:03,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 367 transitions, 6221 flow [2024-01-31 16:05:03,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:03,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:03,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 321 transitions. [2024-01-31 16:05:03,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5496575342465754 [2024-01-31 16:05:03,986 INFO L175 Difference]: Start difference. First operand has 286 places, 344 transitions, 5461 flow. Second operand 8 states and 321 transitions. [2024-01-31 16:05:03,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 367 transitions, 6221 flow [2024-01-31 16:05:04,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 367 transitions, 6057 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-01-31 16:05:04,120 INFO L231 Difference]: Finished difference. Result has 290 places, 345 transitions, 5497 flow [2024-01-31 16:05:04,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5299, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5497, PETRI_PLACES=290, PETRI_TRANSITIONS=345} [2024-01-31 16:05:04,121 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 213 predicate places. [2024-01-31 16:05:04,121 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 345 transitions, 5497 flow [2024-01-31 16:05:04,121 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) [2024-01-31 16:05:04,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:04,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:04,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-01-31 16:05:04,122 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:04,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:04,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1549041070, now seen corresponding path program 3 times [2024-01-31 16:05:04,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:04,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21665756] [2024-01-31 16:05:04,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:04,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:04,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:04,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:04,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:04,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21665756] [2024-01-31 16:05:04,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21665756] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:04,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:04,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:04,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55046164] [2024-01-31 16:05:04,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:04,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:04,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:04,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:04,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:04,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:04,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 345 transitions, 5497 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) [2024-01-31 16:05:04,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:04,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:04,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:05,037 INFO L124 PetriNetUnfolderBase]: 1883/3604 cut-off events. [2024-01-31 16:05:05,037 INFO L125 PetriNetUnfolderBase]: For 42123/42166 co-relation queries the response was YES. [2024-01-31 16:05:05,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18845 conditions, 3604 events. 1883/3604 cut-off events. For 42123/42166 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 24140 event pairs, 480 based on Foata normal form. 9/3500 useless extension candidates. Maximal degree in co-relation 18731. Up to 2333 conditions per place. [2024-01-31 16:05:05,076 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 267 selfloop transitions, 101 changer transitions 0/388 dead transitions. [2024-01-31 16:05:05,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 388 transitions, 6431 flow [2024-01-31 16:05:05,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:05:05,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:05:05,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 289 transitions. [2024-01-31 16:05:05,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398782343987823 [2024-01-31 16:05:05,077 INFO L175 Difference]: Start difference. First operand has 290 places, 345 transitions, 5497 flow. Second operand 9 states and 289 transitions. [2024-01-31 16:05:05,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 388 transitions, 6431 flow [2024-01-31 16:05:05,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 388 transitions, 6241 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-01-31 16:05:05,217 INFO L231 Difference]: Finished difference. Result has 294 places, 353 transitions, 5596 flow [2024-01-31 16:05:05,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5307, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5596, PETRI_PLACES=294, PETRI_TRANSITIONS=353} [2024-01-31 16:05:05,218 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 217 predicate places. [2024-01-31 16:05:05,218 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 353 transitions, 5596 flow [2024-01-31 16:05:05,218 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) [2024-01-31 16:05:05,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:05,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:05,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-01-31 16:05:05,218 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:05,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:05,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1921327780, now seen corresponding path program 4 times [2024-01-31 16:05:05,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:05,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002577366] [2024-01-31 16:05:05,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:05,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:05,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:05,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:05,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:05,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002577366] [2024-01-31 16:05:05,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002577366] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:05,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:05,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:05,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899658776] [2024-01-31 16:05:05,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:05,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:05,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:05,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:05,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:05,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:05,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 353 transitions, 5596 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) [2024-01-31 16:05:05,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:05,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:05,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:06,200 INFO L124 PetriNetUnfolderBase]: 1907/3644 cut-off events. [2024-01-31 16:05:06,200 INFO L125 PetriNetUnfolderBase]: For 42228/42271 co-relation queries the response was YES. [2024-01-31 16:05:06,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19174 conditions, 3644 events. 1907/3644 cut-off events. For 42228/42271 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 24382 event pairs, 480 based on Foata normal form. 9/3540 useless extension candidates. Maximal degree in co-relation 19058. Up to 2345 conditions per place. [2024-01-31 16:05:06,244 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 265 selfloop transitions, 109 changer transitions 0/394 dead transitions. [2024-01-31 16:05:06,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 394 transitions, 6560 flow [2024-01-31 16:05:06,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:05:06,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:05:06,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 289 transitions. [2024-01-31 16:05:06,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398782343987823 [2024-01-31 16:05:06,246 INFO L175 Difference]: Start difference. First operand has 294 places, 353 transitions, 5596 flow. Second operand 9 states and 289 transitions. [2024-01-31 16:05:06,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 394 transitions, 6560 flow [2024-01-31 16:05:06,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 394 transitions, 6401 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-01-31 16:05:06,399 INFO L231 Difference]: Finished difference. Result has 297 places, 359 transitions, 5710 flow [2024-01-31 16:05:06,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5445, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5710, PETRI_PLACES=297, PETRI_TRANSITIONS=359} [2024-01-31 16:05:06,399 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 220 predicate places. [2024-01-31 16:05:06,399 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 359 transitions, 5710 flow [2024-01-31 16:05:06,400 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) [2024-01-31 16:05:06,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:06,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:06,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-01-31 16:05:06,400 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:06,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:06,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1916859130, now seen corresponding path program 5 times [2024-01-31 16:05:06,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:06,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748275991] [2024-01-31 16:05:06,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:06,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:06,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:06,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:06,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:06,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748275991] [2024-01-31 16:05:06,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748275991] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:06,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:06,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:06,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378651119] [2024-01-31 16:05:06,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:06,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:06,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:06,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:06,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:06,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:06,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 359 transitions, 5710 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) [2024-01-31 16:05:06,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:06,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:06,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:07,373 INFO L124 PetriNetUnfolderBase]: 1907/3604 cut-off events. [2024-01-31 16:05:07,373 INFO L125 PetriNetUnfolderBase]: For 42424/42467 co-relation queries the response was YES. [2024-01-31 16:05:07,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19189 conditions, 3604 events. 1907/3604 cut-off events. For 42424/42467 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 24016 event pairs, 330 based on Foata normal form. 9/3517 useless extension candidates. Maximal degree in co-relation 19072. Up to 2349 conditions per place. [2024-01-31 16:05:07,410 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 261 selfloop transitions, 115 changer transitions 0/396 dead transitions. [2024-01-31 16:05:07,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 396 transitions, 6627 flow [2024-01-31 16:05:07,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:05:07,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:05:07,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 288 transitions. [2024-01-31 16:05:07,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4383561643835616 [2024-01-31 16:05:07,412 INFO L175 Difference]: Start difference. First operand has 297 places, 359 transitions, 5710 flow. Second operand 9 states and 288 transitions. [2024-01-31 16:05:07,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 396 transitions, 6627 flow [2024-01-31 16:05:07,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 396 transitions, 6478 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-01-31 16:05:07,609 INFO L231 Difference]: Finished difference. Result has 303 places, 362 transitions, 5859 flow [2024-01-31 16:05:07,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5563, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5859, PETRI_PLACES=303, PETRI_TRANSITIONS=362} [2024-01-31 16:05:07,610 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 226 predicate places. [2024-01-31 16:05:07,610 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 362 transitions, 5859 flow [2024-01-31 16:05:07,610 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) [2024-01-31 16:05:07,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:07,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:07,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-01-31 16:05:07,610 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:07,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:07,611 INFO L85 PathProgramCache]: Analyzing trace with hash 323902608, now seen corresponding path program 1 times [2024-01-31 16:05:07,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:07,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733445577] [2024-01-31 16:05:07,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:07,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:07,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:07,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:07,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:07,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733445577] [2024-01-31 16:05:07,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733445577] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:07,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:07,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:07,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175017670] [2024-01-31 16:05:07,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:07,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:07,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:07,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:07,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:07,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:07,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 362 transitions, 5859 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) [2024-01-31 16:05:07,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:07,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:07,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:08,696 INFO L124 PetriNetUnfolderBase]: 2406/4511 cut-off events. [2024-01-31 16:05:08,696 INFO L125 PetriNetUnfolderBase]: For 56487/56698 co-relation queries the response was YES. [2024-01-31 16:05:08,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24115 conditions, 4511 events. 2406/4511 cut-off events. For 56487/56698 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 30247 event pairs, 644 based on Foata normal form. 79/4368 useless extension candidates. Maximal degree in co-relation 23996. Up to 2897 conditions per place. [2024-01-31 16:05:08,752 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 276 selfloop transitions, 93 changer transitions 0/399 dead transitions. [2024-01-31 16:05:08,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 399 transitions, 6756 flow [2024-01-31 16:05:08,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:05:08,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:05:08,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 288 transitions. [2024-01-31 16:05:08,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4383561643835616 [2024-01-31 16:05:08,754 INFO L175 Difference]: Start difference. First operand has 303 places, 362 transitions, 5859 flow. Second operand 9 states and 288 transitions. [2024-01-31 16:05:08,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 399 transitions, 6756 flow [2024-01-31 16:05:08,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 399 transitions, 6556 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-01-31 16:05:08,946 INFO L231 Difference]: Finished difference. Result has 305 places, 362 transitions, 5850 flow [2024-01-31 16:05:08,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5659, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5850, PETRI_PLACES=305, PETRI_TRANSITIONS=362} [2024-01-31 16:05:08,947 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 228 predicate places. [2024-01-31 16:05:08,947 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 362 transitions, 5850 flow [2024-01-31 16:05:08,960 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) [2024-01-31 16:05:08,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:08,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:08,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-01-31 16:05:08,961 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:08,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:08,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1652488270, now seen corresponding path program 2 times [2024-01-31 16:05:08,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:08,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45423066] [2024-01-31 16:05:08,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:08,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:08,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:09,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:09,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:09,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45423066] [2024-01-31 16:05:09,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45423066] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:09,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:09,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:09,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181494079] [2024-01-31 16:05:09,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:09,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:09,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:09,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:09,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:09,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:09,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 362 transitions, 5850 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) [2024-01-31 16:05:09,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:09,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:09,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:10,089 INFO L124 PetriNetUnfolderBase]: 2455/4592 cut-off events. [2024-01-31 16:05:10,089 INFO L125 PetriNetUnfolderBase]: For 56856/57072 co-relation queries the response was YES. [2024-01-31 16:05:10,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24405 conditions, 4592 events. 2455/4592 cut-off events. For 56856/57072 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 30757 event pairs, 655 based on Foata normal form. 80/4452 useless extension candidates. Maximal degree in co-relation 24286. Up to 2910 conditions per place. [2024-01-31 16:05:10,141 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 287 selfloop transitions, 95 changer transitions 0/412 dead transitions. [2024-01-31 16:05:10,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 412 transitions, 6897 flow [2024-01-31 16:05:10,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:05:10,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:05:10,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 292 transitions. [2024-01-31 16:05:10,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-01-31 16:05:10,143 INFO L175 Difference]: Start difference. First operand has 305 places, 362 transitions, 5850 flow. Second operand 9 states and 292 transitions. [2024-01-31 16:05:10,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 412 transitions, 6897 flow [2024-01-31 16:05:10,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 412 transitions, 6750 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-31 16:05:10,327 INFO L231 Difference]: Finished difference. Result has 308 places, 372 transitions, 5999 flow [2024-01-31 16:05:10,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5713, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5999, PETRI_PLACES=308, PETRI_TRANSITIONS=372} [2024-01-31 16:05:10,327 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 231 predicate places. [2024-01-31 16:05:10,327 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 372 transitions, 5999 flow [2024-01-31 16:05:10,328 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) [2024-01-31 16:05:10,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:10,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:10,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-01-31 16:05:10,328 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:10,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:10,329 INFO L85 PathProgramCache]: Analyzing trace with hash -662923126, now seen corresponding path program 3 times [2024-01-31 16:05:10,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:10,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079740840] [2024-01-31 16:05:10,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:10,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:10,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:10,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:10,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:10,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079740840] [2024-01-31 16:05:10,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079740840] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:10,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:10,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:10,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183056609] [2024-01-31 16:05:10,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:10,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:10,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:10,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:10,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:10,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:10,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 372 transitions, 5999 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) [2024-01-31 16:05:10,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:10,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:10,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:11,563 INFO L124 PetriNetUnfolderBase]: 2443/4572 cut-off events. [2024-01-31 16:05:11,563 INFO L125 PetriNetUnfolderBase]: For 58468/58686 co-relation queries the response was YES. [2024-01-31 16:05:11,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24340 conditions, 4572 events. 2443/4572 cut-off events. For 58468/58686 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 30735 event pairs, 702 based on Foata normal form. 76/4423 useless extension candidates. Maximal degree in co-relation 24220. Up to 3558 conditions per place. [2024-01-31 16:05:11,614 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 309 selfloop transitions, 62 changer transitions 0/401 dead transitions. [2024-01-31 16:05:11,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 401 transitions, 6858 flow [2024-01-31 16:05:11,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:05:11,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:05:11,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 279 transitions. [2024-01-31 16:05:11,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4246575342465753 [2024-01-31 16:05:11,615 INFO L175 Difference]: Start difference. First operand has 308 places, 372 transitions, 5999 flow. Second operand 9 states and 279 transitions. [2024-01-31 16:05:11,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 401 transitions, 6858 flow [2024-01-31 16:05:11,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 401 transitions, 6727 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-01-31 16:05:11,809 INFO L231 Difference]: Finished difference. Result has 313 places, 372 transitions, 5998 flow [2024-01-31 16:05:11,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5868, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5998, PETRI_PLACES=313, PETRI_TRANSITIONS=372} [2024-01-31 16:05:11,810 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 236 predicate places. [2024-01-31 16:05:11,810 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 372 transitions, 5998 flow [2024-01-31 16:05:11,810 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) [2024-01-31 16:05:11,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:11,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:11,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-01-31 16:05:11,811 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:11,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:11,811 INFO L85 PathProgramCache]: Analyzing trace with hash -661853626, now seen corresponding path program 4 times [2024-01-31 16:05:11,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:11,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402605716] [2024-01-31 16:05:11,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:11,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:12,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:12,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:12,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402605716] [2024-01-31 16:05:12,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402605716] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:12,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:12,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:12,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733181573] [2024-01-31 16:05:12,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:12,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:12,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:12,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:12,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:12,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:12,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 372 transitions, 5998 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) [2024-01-31 16:05:12,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:12,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:12,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:13,047 INFO L124 PetriNetUnfolderBase]: 2438/4570 cut-off events. [2024-01-31 16:05:13,048 INFO L125 PetriNetUnfolderBase]: For 59282/59504 co-relation queries the response was YES. [2024-01-31 16:05:13,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24242 conditions, 4570 events. 2438/4570 cut-off events. For 59282/59504 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 30628 event pairs, 692 based on Foata normal form. 74/4420 useless extension candidates. Maximal degree in co-relation 24121. Up to 3557 conditions per place. [2024-01-31 16:05:13,104 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 310 selfloop transitions, 63 changer transitions 0/403 dead transitions. [2024-01-31 16:05:13,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 403 transitions, 6855 flow [2024-01-31 16:05:13,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:05:13,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:05:13,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 327 transitions. [2024-01-31 16:05:13,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40722291407222916 [2024-01-31 16:05:13,106 INFO L175 Difference]: Start difference. First operand has 313 places, 372 transitions, 5998 flow. Second operand 11 states and 327 transitions. [2024-01-31 16:05:13,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 403 transitions, 6855 flow [2024-01-31 16:05:13,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 403 transitions, 6728 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-01-31 16:05:13,322 INFO L231 Difference]: Finished difference. Result has 317 places, 372 transitions, 6002 flow [2024-01-31 16:05:13,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5871, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6002, PETRI_PLACES=317, PETRI_TRANSITIONS=372} [2024-01-31 16:05:13,322 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 240 predicate places. [2024-01-31 16:05:13,323 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 372 transitions, 6002 flow [2024-01-31 16:05:13,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:13,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:13,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:13,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-01-31 16:05:13,323 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:13,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:13,324 INFO L85 PathProgramCache]: Analyzing trace with hash -2131769834, now seen corresponding path program 1 times [2024-01-31 16:05:13,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:13,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115717594] [2024-01-31 16:05:13,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:13,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:13,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:13,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:13,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:13,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115717594] [2024-01-31 16:05:13,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115717594] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:13,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:13,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:05:13,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942589159] [2024-01-31 16:05:13,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:13,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:05:13,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:13,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:05:13,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:05:13,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:05:13,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 372 transitions, 6002 flow. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:13,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:13,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:05:13,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:14,082 INFO L124 PetriNetUnfolderBase]: 1658/3329 cut-off events. [2024-01-31 16:05:14,082 INFO L125 PetriNetUnfolderBase]: For 52886/53016 co-relation queries the response was YES. [2024-01-31 16:05:14,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18507 conditions, 3329 events. 1658/3329 cut-off events. For 52886/53016 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 23693 event pairs, 294 based on Foata normal form. 98/3186 useless extension candidates. Maximal degree in co-relation 18385. Up to 903 conditions per place. [2024-01-31 16:05:14,121 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 245 selfloop transitions, 113 changer transitions 0/400 dead transitions. [2024-01-31 16:05:14,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 400 transitions, 6982 flow [2024-01-31 16:05:14,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:05:14,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:05:14,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 186 transitions. [2024-01-31 16:05:14,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.636986301369863 [2024-01-31 16:05:14,122 INFO L175 Difference]: Start difference. First operand has 317 places, 372 transitions, 6002 flow. Second operand 4 states and 186 transitions. [2024-01-31 16:05:14,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 400 transitions, 6982 flow [2024-01-31 16:05:14,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 400 transitions, 6873 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-31 16:05:14,289 INFO L231 Difference]: Finished difference. Result has 313 places, 373 transitions, 6253 flow [2024-01-31 16:05:14,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5899, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=6253, PETRI_PLACES=313, PETRI_TRANSITIONS=373} [2024-01-31 16:05:14,290 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 236 predicate places. [2024-01-31 16:05:14,290 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 373 transitions, 6253 flow [2024-01-31 16:05:14,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:14,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:14,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:14,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-01-31 16:05:14,290 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:14,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:14,291 INFO L85 PathProgramCache]: Analyzing trace with hash -2127782146, now seen corresponding path program 2 times [2024-01-31 16:05:14,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:14,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334532728] [2024-01-31 16:05:14,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:14,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:14,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:14,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:14,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:14,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334532728] [2024-01-31 16:05:14,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334532728] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:14,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:14,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:05:14,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608196052] [2024-01-31 16:05:14,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:14,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:05:14,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:14,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:05:14,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:05:14,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:05:14,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 373 transitions, 6253 flow. Second operand has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:14,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:14,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:05:14,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:14,827 INFO L124 PetriNetUnfolderBase]: 1242/2433 cut-off events. [2024-01-31 16:05:14,827 INFO L125 PetriNetUnfolderBase]: For 48863/48953 co-relation queries the response was YES. [2024-01-31 16:05:14,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15346 conditions, 2433 events. 1242/2433 cut-off events. For 48863/48953 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 16524 event pairs, 276 based on Foata normal form. 98/2382 useless extension candidates. Maximal degree in co-relation 15223. Up to 941 conditions per place. [2024-01-31 16:05:14,856 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 242 selfloop transitions, 88 changer transitions 1/373 dead transitions. [2024-01-31 16:05:14,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 373 transitions, 6912 flow [2024-01-31 16:05:14,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:05:14,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:05:14,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 208 transitions. [2024-01-31 16:05:14,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5698630136986301 [2024-01-31 16:05:14,857 INFO L175 Difference]: Start difference. First operand has 313 places, 373 transitions, 6253 flow. Second operand 5 states and 208 transitions. [2024-01-31 16:05:14,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 373 transitions, 6912 flow [2024-01-31 16:05:15,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 373 transitions, 6735 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-01-31 16:05:15,049 INFO L231 Difference]: Finished difference. Result has 311 places, 361 transitions, 6266 flow [2024-01-31 16:05:15,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5987, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6266, PETRI_PLACES=311, PETRI_TRANSITIONS=361} [2024-01-31 16:05:15,050 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 234 predicate places. [2024-01-31 16:05:15,050 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 361 transitions, 6266 flow [2024-01-31 16:05:15,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:15,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:15,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:15,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-01-31 16:05:15,051 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:15,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:15,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1129089042, now seen corresponding path program 2 times [2024-01-31 16:05:15,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:15,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994304726] [2024-01-31 16:05:15,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:15,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:15,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:15,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:15,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:15,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994304726] [2024-01-31 16:05:15,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994304726] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:15,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:15,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:15,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897213911] [2024-01-31 16:05:15,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:15,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:15,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:15,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:15,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:15,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:15,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 361 transitions, 6266 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) [2024-01-31 16:05:15,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:15,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:15,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:16,012 INFO L124 PetriNetUnfolderBase]: 1943/3539 cut-off events. [2024-01-31 16:05:16,012 INFO L125 PetriNetUnfolderBase]: For 58884/59083 co-relation queries the response was YES. [2024-01-31 16:05:16,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21407 conditions, 3539 events. 1943/3539 cut-off events. For 58884/59083 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 23107 event pairs, 414 based on Foata normal form. 76/3484 useless extension candidates. Maximal degree in co-relation 21285. Up to 2945 conditions per place. [2024-01-31 16:05:16,057 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 301 selfloop transitions, 45 changer transitions 0/376 dead transitions. [2024-01-31 16:05:16,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 376 transitions, 7014 flow [2024-01-31 16:05:16,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:05:16,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:05:16,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 190 transitions. [2024-01-31 16:05:16,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4337899543378995 [2024-01-31 16:05:16,058 INFO L175 Difference]: Start difference. First operand has 311 places, 361 transitions, 6266 flow. Second operand 6 states and 190 transitions. [2024-01-31 16:05:16,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 376 transitions, 7014 flow [2024-01-31 16:05:16,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 376 transitions, 6791 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-01-31 16:05:16,363 INFO L231 Difference]: Finished difference. Result has 311 places, 362 transitions, 6149 flow [2024-01-31 16:05:16,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6044, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6149, PETRI_PLACES=311, PETRI_TRANSITIONS=362} [2024-01-31 16:05:16,364 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 234 predicate places. [2024-01-31 16:05:16,364 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 362 transitions, 6149 flow [2024-01-31 16:05:16,364 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) [2024-01-31 16:05:16,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:16,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:16,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-01-31 16:05:16,365 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:16,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:16,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1494792898, now seen corresponding path program 3 times [2024-01-31 16:05:16,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:16,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322909396] [2024-01-31 16:05:16,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:16,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:16,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:16,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:16,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:16,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322909396] [2024-01-31 16:05:16,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322909396] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:16,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:16,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:16,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384292679] [2024-01-31 16:05:16,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:16,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:16,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:16,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:16,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:16,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:16,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 362 transitions, 6149 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) [2024-01-31 16:05:16,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:16,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:16,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:17,324 INFO L124 PetriNetUnfolderBase]: 1943/3539 cut-off events. [2024-01-31 16:05:17,324 INFO L125 PetriNetUnfolderBase]: For 56312/56513 co-relation queries the response was YES. [2024-01-31 16:05:17,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20974 conditions, 3539 events. 1943/3539 cut-off events. For 56312/56513 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 23111 event pairs, 412 based on Foata normal form. 76/3484 useless extension candidates. Maximal degree in co-relation 20854. Up to 2947 conditions per place. [2024-01-31 16:05:17,363 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 300 selfloop transitions, 45 changer transitions 0/375 dead transitions. [2024-01-31 16:05:17,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 375 transitions, 6886 flow [2024-01-31 16:05:17,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:05:17,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:05:17,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 164 transitions. [2024-01-31 16:05:17,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44931506849315067 [2024-01-31 16:05:17,364 INFO L175 Difference]: Start difference. First operand has 311 places, 362 transitions, 6149 flow. Second operand 5 states and 164 transitions. [2024-01-31 16:05:17,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 375 transitions, 6886 flow [2024-01-31 16:05:17,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 375 transitions, 6829 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-01-31 16:05:17,649 INFO L231 Difference]: Finished difference. Result has 312 places, 363 transitions, 6205 flow [2024-01-31 16:05:17,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6093, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6205, PETRI_PLACES=312, PETRI_TRANSITIONS=363} [2024-01-31 16:05:17,650 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 235 predicate places. [2024-01-31 16:05:17,650 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 363 transitions, 6205 flow [2024-01-31 16:05:17,650 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) [2024-01-31 16:05:17,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:17,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:17,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-01-31 16:05:17,651 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:17,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:17,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1494829168, now seen corresponding path program 4 times [2024-01-31 16:05:17,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:17,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655506806] [2024-01-31 16:05:17,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:17,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:17,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:17,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:17,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655506806] [2024-01-31 16:05:17,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655506806] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:17,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:17,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:17,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860300135] [2024-01-31 16:05:17,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:17,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:17,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:17,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:17,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:17,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:17,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 363 transitions, 6205 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) [2024-01-31 16:05:17,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:17,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:17,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:18,557 INFO L124 PetriNetUnfolderBase]: 1976/3563 cut-off events. [2024-01-31 16:05:18,557 INFO L125 PetriNetUnfolderBase]: For 58742/58916 co-relation queries the response was YES. [2024-01-31 16:05:18,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21326 conditions, 3563 events. 1976/3563 cut-off events. For 58742/58916 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 23044 event pairs, 412 based on Foata normal form. 83/3498 useless extension candidates. Maximal degree in co-relation 21206. Up to 2983 conditions per place. [2024-01-31 16:05:18,601 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 300 selfloop transitions, 41 changer transitions 0/371 dead transitions. [2024-01-31 16:05:18,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 371 transitions, 6902 flow [2024-01-31 16:05:18,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:05:18,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:05:18,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 159 transitions. [2024-01-31 16:05:18,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43561643835616437 [2024-01-31 16:05:18,602 INFO L175 Difference]: Start difference. First operand has 312 places, 363 transitions, 6205 flow. Second operand 5 states and 159 transitions. [2024-01-31 16:05:18,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 371 transitions, 6902 flow [2024-01-31 16:05:18,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 371 transitions, 6760 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-31 16:05:18,898 INFO L231 Difference]: Finished difference. Result has 307 places, 362 transitions, 6133 flow [2024-01-31 16:05:18,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6051, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6133, PETRI_PLACES=307, PETRI_TRANSITIONS=362} [2024-01-31 16:05:18,899 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 230 predicate places. [2024-01-31 16:05:18,899 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 362 transitions, 6133 flow [2024-01-31 16:05:18,899 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) [2024-01-31 16:05:18,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:18,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:18,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-01-31 16:05:18,899 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:18,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:18,900 INFO L85 PathProgramCache]: Analyzing trace with hash -2019163812, now seen corresponding path program 5 times [2024-01-31 16:05:18,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:18,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176737586] [2024-01-31 16:05:18,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:18,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:18,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:19,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:19,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:19,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176737586] [2024-01-31 16:05:19,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176737586] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:19,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:19,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:19,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934540186] [2024-01-31 16:05:19,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:19,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:19,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:19,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:19,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:19,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:19,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 362 transitions, 6133 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) [2024-01-31 16:05:19,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:19,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:19,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:19,891 INFO L124 PetriNetUnfolderBase]: 1964/3574 cut-off events. [2024-01-31 16:05:19,892 INFO L125 PetriNetUnfolderBase]: For 56654/56852 co-relation queries the response was YES. [2024-01-31 16:05:19,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20958 conditions, 3574 events. 1964/3574 cut-off events. For 56654/56852 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 23323 event pairs, 387 based on Foata normal form. 78/3527 useless extension candidates. Maximal degree in co-relation 20843. Up to 2839 conditions per place. [2024-01-31 16:05:19,935 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 292 selfloop transitions, 70 changer transitions 0/392 dead transitions. [2024-01-31 16:05:19,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 392 transitions, 7014 flow [2024-01-31 16:05:19,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:19,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:19,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 249 transitions. [2024-01-31 16:05:19,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263698630136986 [2024-01-31 16:05:19,937 INFO L175 Difference]: Start difference. First operand has 307 places, 362 transitions, 6133 flow. Second operand 8 states and 249 transitions. [2024-01-31 16:05:19,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 392 transitions, 7014 flow [2024-01-31 16:05:20,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 392 transitions, 6887 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-01-31 16:05:20,210 INFO L231 Difference]: Finished difference. Result has 311 places, 367 transitions, 6238 flow [2024-01-31 16:05:20,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6006, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6238, PETRI_PLACES=311, PETRI_TRANSITIONS=367} [2024-01-31 16:05:20,210 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 234 predicate places. [2024-01-31 16:05:20,210 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 367 transitions, 6238 flow [2024-01-31 16:05:20,210 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) [2024-01-31 16:05:20,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:20,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:20,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-01-31 16:05:20,211 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:20,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:20,211 INFO L85 PathProgramCache]: Analyzing trace with hash 405277318, now seen corresponding path program 6 times [2024-01-31 16:05:20,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:20,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644813954] [2024-01-31 16:05:20,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:20,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:20,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:20,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:20,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:20,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644813954] [2024-01-31 16:05:20,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644813954] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:20,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:20,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:20,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459066487] [2024-01-31 16:05:20,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:20,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:20,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:20,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:20,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:20,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:20,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 367 transitions, 6238 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) [2024-01-31 16:05:20,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:20,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:20,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:21,208 INFO L124 PetriNetUnfolderBase]: 1963/3570 cut-off events. [2024-01-31 16:05:21,209 INFO L125 PetriNetUnfolderBase]: For 57049/57247 co-relation queries the response was YES. [2024-01-31 16:05:21,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21172 conditions, 3570 events. 1963/3570 cut-off events. For 57049/57247 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 23344 event pairs, 348 based on Foata normal form. 79/3523 useless extension candidates. Maximal degree in co-relation 21056. Up to 2319 conditions per place. [2024-01-31 16:05:21,242 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 253 selfloop transitions, 112 changer transitions 0/395 dead transitions. [2024-01-31 16:05:21,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 395 transitions, 7087 flow [2024-01-31 16:05:21,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:21,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:21,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 253 transitions. [2024-01-31 16:05:21,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4332191780821918 [2024-01-31 16:05:21,243 INFO L175 Difference]: Start difference. First operand has 311 places, 367 transitions, 6238 flow. Second operand 8 states and 253 transitions. [2024-01-31 16:05:21,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 395 transitions, 7087 flow [2024-01-31 16:05:21,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 395 transitions, 6979 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-01-31 16:05:21,491 INFO L231 Difference]: Finished difference. Result has 314 places, 367 transitions, 6367 flow [2024-01-31 16:05:21,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6132, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6367, PETRI_PLACES=314, PETRI_TRANSITIONS=367} [2024-01-31 16:05:21,492 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 237 predicate places. [2024-01-31 16:05:21,492 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 367 transitions, 6367 flow [2024-01-31 16:05:21,492 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) [2024-01-31 16:05:21,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:21,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:21,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-01-31 16:05:21,493 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:21,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:21,493 INFO L85 PathProgramCache]: Analyzing trace with hash -2018094312, now seen corresponding path program 7 times [2024-01-31 16:05:21,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:21,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018579108] [2024-01-31 16:05:21,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:21,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:21,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:21,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:21,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:21,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018579108] [2024-01-31 16:05:21,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018579108] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:21,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:21,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:21,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71238747] [2024-01-31 16:05:21,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:21,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:21,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:21,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:21,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:21,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:21,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 367 transitions, 6367 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) [2024-01-31 16:05:21,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:21,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:21,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:22,603 INFO L124 PetriNetUnfolderBase]: 1952/3551 cut-off events. [2024-01-31 16:05:22,603 INFO L125 PetriNetUnfolderBase]: For 59545/59748 co-relation queries the response was YES. [2024-01-31 16:05:22,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21256 conditions, 3551 events. 1952/3551 cut-off events. For 59545/59748 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 23188 event pairs, 389 based on Foata normal form. 78/3503 useless extension candidates. Maximal degree in co-relation 21140. Up to 2826 conditions per place. [2024-01-31 16:05:22,646 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 292 selfloop transitions, 72 changer transitions 0/394 dead transitions. [2024-01-31 16:05:22,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 394 transitions, 7188 flow [2024-01-31 16:05:22,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:05:22,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:05:22,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 297 transitions. [2024-01-31 16:05:22,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40684931506849314 [2024-01-31 16:05:22,648 INFO L175 Difference]: Start difference. First operand has 314 places, 367 transitions, 6367 flow. Second operand 10 states and 297 transitions. [2024-01-31 16:05:22,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 394 transitions, 7188 flow [2024-01-31 16:05:22,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 394 transitions, 6952 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-01-31 16:05:22,946 INFO L231 Difference]: Finished difference. Result has 315 places, 367 transitions, 6283 flow [2024-01-31 16:05:22,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6131, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6283, PETRI_PLACES=315, PETRI_TRANSITIONS=367} [2024-01-31 16:05:22,946 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 238 predicate places. [2024-01-31 16:05:22,947 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 367 transitions, 6283 flow [2024-01-31 16:05:22,947 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) [2024-01-31 16:05:22,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:22,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:22,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-01-31 16:05:22,947 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:22,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:22,948 INFO L85 PathProgramCache]: Analyzing trace with hash 129779654, now seen corresponding path program 8 times [2024-01-31 16:05:22,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:22,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085639972] [2024-01-31 16:05:22,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:22,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:22,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:23,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:23,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:23,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085639972] [2024-01-31 16:05:23,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085639972] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:23,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:23,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:23,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389523494] [2024-01-31 16:05:23,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:23,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:23,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:23,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:23,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:23,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:23,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 367 transitions, 6283 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) [2024-01-31 16:05:23,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:23,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:23,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:23,912 INFO L124 PetriNetUnfolderBase]: 1951/3550 cut-off events. [2024-01-31 16:05:23,912 INFO L125 PetriNetUnfolderBase]: For 57613/57815 co-relation queries the response was YES. [2024-01-31 16:05:23,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21081 conditions, 3550 events. 1951/3550 cut-off events. For 57613/57815 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 23226 event pairs, 336 based on Foata normal form. 79/3503 useless extension candidates. Maximal degree in co-relation 20966. Up to 2671 conditions per place. [2024-01-31 16:05:23,950 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 262 selfloop transitions, 100 changer transitions 0/392 dead transitions. [2024-01-31 16:05:23,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 392 transitions, 7112 flow [2024-01-31 16:05:23,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:23,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:23,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 226 transitions. [2024-01-31 16:05:23,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44227005870841485 [2024-01-31 16:05:23,951 INFO L175 Difference]: Start difference. First operand has 315 places, 367 transitions, 6283 flow. Second operand 7 states and 226 transitions. [2024-01-31 16:05:23,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 392 transitions, 7112 flow [2024-01-31 16:05:24,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 392 transitions, 6965 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-01-31 16:05:24,239 INFO L231 Difference]: Finished difference. Result has 314 places, 367 transitions, 6352 flow [2024-01-31 16:05:24,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6138, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6352, PETRI_PLACES=314, PETRI_TRANSITIONS=367} [2024-01-31 16:05:24,240 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 237 predicate places. [2024-01-31 16:05:24,240 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 367 transitions, 6352 flow [2024-01-31 16:05:24,240 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) [2024-01-31 16:05:24,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:24,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:24,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-01-31 16:05:24,241 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:24,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:24,241 INFO L85 PathProgramCache]: Analyzing trace with hash 130849154, now seen corresponding path program 9 times [2024-01-31 16:05:24,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:24,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060399551] [2024-01-31 16:05:24,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:24,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:24,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:24,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:24,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:24,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060399551] [2024-01-31 16:05:24,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060399551] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:24,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:24,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:24,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365719501] [2024-01-31 16:05:24,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:24,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:24,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:24,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:24,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:24,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:24,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 367 transitions, 6352 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) [2024-01-31 16:05:24,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:24,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:24,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:25,306 INFO L124 PetriNetUnfolderBase]: 1963/3570 cut-off events. [2024-01-31 16:05:25,307 INFO L125 PetriNetUnfolderBase]: For 59400/59602 co-relation queries the response was YES. [2024-01-31 16:05:25,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21305 conditions, 3570 events. 1963/3570 cut-off events. For 59400/59602 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 23352 event pairs, 336 based on Foata normal form. 79/3523 useless extension candidates. Maximal degree in co-relation 21190. Up to 2679 conditions per place. [2024-01-31 16:05:25,343 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 263 selfloop transitions, 106 changer transitions 0/399 dead transitions. [2024-01-31 16:05:25,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 399 transitions, 7235 flow [2024-01-31 16:05:25,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:05:25,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:05:25,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 277 transitions. [2024-01-31 16:05:25,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4216133942161339 [2024-01-31 16:05:25,344 INFO L175 Difference]: Start difference. First operand has 314 places, 367 transitions, 6352 flow. Second operand 9 states and 277 transitions. [2024-01-31 16:05:25,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 399 transitions, 7235 flow [2024-01-31 16:05:25,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 399 transitions, 7027 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-01-31 16:05:25,609 INFO L231 Difference]: Finished difference. Result has 317 places, 369 transitions, 6399 flow [2024-01-31 16:05:25,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6150, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6399, PETRI_PLACES=317, PETRI_TRANSITIONS=369} [2024-01-31 16:05:25,610 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 240 predicate places. [2024-01-31 16:05:25,610 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 369 transitions, 6399 flow [2024-01-31 16:05:25,610 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) [2024-01-31 16:05:25,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:25,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:25,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-01-31 16:05:25,611 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:25,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:25,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1163107304, now seen corresponding path program 10 times [2024-01-31 16:05:25,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:25,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224061366] [2024-01-31 16:05:25,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:25,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:25,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:25,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:25,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:25,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224061366] [2024-01-31 16:05:25,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224061366] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:25,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:25,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:25,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594306887] [2024-01-31 16:05:25,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:25,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:25,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:25,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:25,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:25,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:25,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 369 transitions, 6399 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) [2024-01-31 16:05:25,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:25,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:25,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:26,604 INFO L124 PetriNetUnfolderBase]: 2011/3623 cut-off events. [2024-01-31 16:05:26,604 INFO L125 PetriNetUnfolderBase]: For 62002/62171 co-relation queries the response was YES. [2024-01-31 16:05:26,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21810 conditions, 3623 events. 2011/3623 cut-off events. For 62002/62171 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 23501 event pairs, 340 based on Foata normal form. 89/3570 useless extension candidates. Maximal degree in co-relation 21694. Up to 2727 conditions per place. [2024-01-31 16:05:26,645 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 261 selfloop transitions, 111 changer transitions 0/402 dead transitions. [2024-01-31 16:05:26,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 402 transitions, 7317 flow [2024-01-31 16:05:26,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:05:26,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:05:26,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 296 transitions. [2024-01-31 16:05:26,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4054794520547945 [2024-01-31 16:05:26,647 INFO L175 Difference]: Start difference. First operand has 317 places, 369 transitions, 6399 flow. Second operand 10 states and 296 transitions. [2024-01-31 16:05:26,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 402 transitions, 7317 flow [2024-01-31 16:05:26,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 402 transitions, 7165 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-01-31 16:05:26,930 INFO L231 Difference]: Finished difference. Result has 322 places, 376 transitions, 6586 flow [2024-01-31 16:05:26,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6259, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6586, PETRI_PLACES=322, PETRI_TRANSITIONS=376} [2024-01-31 16:05:26,930 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 245 predicate places. [2024-01-31 16:05:26,931 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 376 transitions, 6586 flow [2024-01-31 16:05:26,931 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) [2024-01-31 16:05:26,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:26,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:26,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-01-31 16:05:26,931 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:26,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:26,932 INFO L85 PathProgramCache]: Analyzing trace with hash 948710849, now seen corresponding path program 1 times [2024-01-31 16:05:26,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:26,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874423403] [2024-01-31 16:05:26,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:26,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:26,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:27,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:27,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:27,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874423403] [2024-01-31 16:05:27,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874423403] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:27,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:27,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:05:27,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329651354] [2024-01-31 16:05:27,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:27,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:05:27,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:27,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:05:27,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:05:27,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:27,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 376 transitions, 6586 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) [2024-01-31 16:05:27,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:27,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:27,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:27,864 INFO L124 PetriNetUnfolderBase]: 1558/2928 cut-off events. [2024-01-31 16:05:27,864 INFO L125 PetriNetUnfolderBase]: For 51853/51886 co-relation queries the response was YES. [2024-01-31 16:05:27,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17791 conditions, 2928 events. 1558/2928 cut-off events. For 51853/51886 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 19321 event pairs, 323 based on Foata normal form. 4/2877 useless extension candidates. Maximal degree in co-relation 17674. Up to 2394 conditions per place. [2024-01-31 16:05:27,896 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 307 selfloop transitions, 69 changer transitions 0/397 dead transitions. [2024-01-31 16:05:27,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 397 transitions, 7447 flow [2024-01-31 16:05:27,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:27,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:27,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 245 transitions. [2024-01-31 16:05:27,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4195205479452055 [2024-01-31 16:05:27,898 INFO L175 Difference]: Start difference. First operand has 322 places, 376 transitions, 6586 flow. Second operand 8 states and 245 transitions. [2024-01-31 16:05:27,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 397 transitions, 7447 flow [2024-01-31 16:05:28,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 397 transitions, 7193 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-01-31 16:05:28,142 INFO L231 Difference]: Finished difference. Result has 321 places, 377 transitions, 6492 flow [2024-01-31 16:05:28,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6332, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6492, PETRI_PLACES=321, PETRI_TRANSITIONS=377} [2024-01-31 16:05:28,143 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 244 predicate places. [2024-01-31 16:05:28,143 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 377 transitions, 6492 flow [2024-01-31 16:05:28,143 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) [2024-01-31 16:05:28,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:28,143 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] [2024-01-31 16:05:28,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-01-31 16:05:28,144 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:28,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:28,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1106046833, now seen corresponding path program 1 times [2024-01-31 16:05:28,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:28,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762681363] [2024-01-31 16:05:28,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:28,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:28,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:28,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:28,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:28,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762681363] [2024-01-31 16:05:28,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762681363] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:28,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:28,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:05:28,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070623284] [2024-01-31 16:05:28,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:28,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:05:28,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:28,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:05:28,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:05:28,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:28,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 377 transitions, 6492 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) [2024-01-31 16:05:28,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:28,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:28,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:29,127 INFO L124 PetriNetUnfolderBase]: 1988/3629 cut-off events. [2024-01-31 16:05:29,127 INFO L125 PetriNetUnfolderBase]: For 61153/61360 co-relation queries the response was YES. [2024-01-31 16:05:29,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21636 conditions, 3629 events. 1988/3629 cut-off events. For 61153/61360 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 23919 event pairs, 415 based on Foata normal form. 76/3574 useless extension candidates. Maximal degree in co-relation 21519. Up to 2904 conditions per place. [2024-01-31 16:05:29,182 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 318 selfloop transitions, 55 changer transitions 0/403 dead transitions. [2024-01-31 16:05:29,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 403 transitions, 7352 flow [2024-01-31 16:05:29,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:29,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:29,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 245 transitions. [2024-01-31 16:05:29,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4195205479452055 [2024-01-31 16:05:29,184 INFO L175 Difference]: Start difference. First operand has 321 places, 377 transitions, 6492 flow. Second operand 8 states and 245 transitions. [2024-01-31 16:05:29,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 403 transitions, 7352 flow [2024-01-31 16:05:29,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 403 transitions, 7218 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-01-31 16:05:29,486 INFO L231 Difference]: Finished difference. Result has 323 places, 379 transitions, 6495 flow [2024-01-31 16:05:29,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6358, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6495, PETRI_PLACES=323, PETRI_TRANSITIONS=379} [2024-01-31 16:05:29,487 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 246 predicate places. [2024-01-31 16:05:29,487 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 379 transitions, 6495 flow [2024-01-31 16:05:29,487 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) [2024-01-31 16:05:29,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:29,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:29,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-01-31 16:05:29,488 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:29,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:29,488 INFO L85 PathProgramCache]: Analyzing trace with hash -475969707, now seen corresponding path program 2 times [2024-01-31 16:05:29,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:29,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412807000] [2024-01-31 16:05:29,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:29,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:29,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:29,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:29,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:29,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412807000] [2024-01-31 16:05:29,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412807000] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:29,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:29,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:05:29,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994679932] [2024-01-31 16:05:29,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:29,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:05:29,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:29,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:05:29,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:05:29,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:29,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 379 transitions, 6495 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) [2024-01-31 16:05:29,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:29,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:29,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:30,537 INFO L124 PetriNetUnfolderBase]: 1573/2971 cut-off events. [2024-01-31 16:05:30,538 INFO L125 PetriNetUnfolderBase]: For 50202/50238 co-relation queries the response was YES. [2024-01-31 16:05:30,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17844 conditions, 2971 events. 1573/2971 cut-off events. For 50202/50238 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 19851 event pairs, 329 based on Foata normal form. 7/2916 useless extension candidates. Maximal degree in co-relation 17726. Up to 2300 conditions per place. [2024-01-31 16:05:30,570 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 292 selfloop transitions, 95 changer transitions 0/408 dead transitions. [2024-01-31 16:05:30,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 408 transitions, 7524 flow [2024-01-31 16:05:30,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:05:30,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:05:30,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 293 transitions. [2024-01-31 16:05:30,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40136986301369865 [2024-01-31 16:05:30,572 INFO L175 Difference]: Start difference. First operand has 323 places, 379 transitions, 6495 flow. Second operand 10 states and 293 transitions. [2024-01-31 16:05:30,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 408 transitions, 7524 flow [2024-01-31 16:05:30,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 408 transitions, 7459 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-01-31 16:05:30,823 INFO L231 Difference]: Finished difference. Result has 330 places, 387 transitions, 6814 flow [2024-01-31 16:05:30,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6436, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6814, PETRI_PLACES=330, PETRI_TRANSITIONS=387} [2024-01-31 16:05:30,824 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 253 predicate places. [2024-01-31 16:05:30,825 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 387 transitions, 6814 flow [2024-01-31 16:05:30,825 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) [2024-01-31 16:05:30,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:30,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:30,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-01-31 16:05:30,825 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:30,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:30,826 INFO L85 PathProgramCache]: Analyzing trace with hash -550115773, now seen corresponding path program 2 times [2024-01-31 16:05:30,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:30,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122202029] [2024-01-31 16:05:30,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:30,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:30,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:31,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:31,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:31,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122202029] [2024-01-31 16:05:31,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122202029] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:31,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:31,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:05:31,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370005598] [2024-01-31 16:05:31,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:31,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:05:31,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:31,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:05:31,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:05:31,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:31,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 387 transitions, 6814 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) [2024-01-31 16:05:31,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:31,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:31,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:31,990 INFO L124 PetriNetUnfolderBase]: 2002/3674 cut-off events. [2024-01-31 16:05:31,990 INFO L125 PetriNetUnfolderBase]: For 63369/63579 co-relation queries the response was YES. [2024-01-31 16:05:32,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22174 conditions, 3674 events. 2002/3674 cut-off events. For 63369/63579 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 24448 event pairs, 423 based on Foata normal form. 79/3622 useless extension candidates. Maximal degree in co-relation 22053. Up to 2803 conditions per place. [2024-01-31 16:05:32,023 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 312 selfloop transitions, 70 changer transitions 0/412 dead transitions. [2024-01-31 16:05:32,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 412 transitions, 7696 flow [2024-01-31 16:05:32,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:32,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:32,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 220 transitions. [2024-01-31 16:05:32,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43052837573385516 [2024-01-31 16:05:32,024 INFO L175 Difference]: Start difference. First operand has 330 places, 387 transitions, 6814 flow. Second operand 7 states and 220 transitions. [2024-01-31 16:05:32,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 412 transitions, 7696 flow [2024-01-31 16:05:32,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 412 transitions, 7502 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-01-31 16:05:32,321 INFO L231 Difference]: Finished difference. Result has 329 places, 389 transitions, 6798 flow [2024-01-31 16:05:32,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6620, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6798, PETRI_PLACES=329, PETRI_TRANSITIONS=389} [2024-01-31 16:05:32,321 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 252 predicate places. [2024-01-31 16:05:32,321 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 389 transitions, 6798 flow [2024-01-31 16:05:32,322 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) [2024-01-31 16:05:32,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:32,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:32,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-01-31 16:05:32,322 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:32,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:32,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1346435349, now seen corresponding path program 1 times [2024-01-31 16:05:32,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:32,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342037093] [2024-01-31 16:05:32,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:32,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:32,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:32,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:32,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342037093] [2024-01-31 16:05:32,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342037093] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:32,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:32,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:05:32,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919442041] [2024-01-31 16:05:32,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:32,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:05:32,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:32,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:05:32,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:05:32,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:32,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 389 transitions, 6798 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) [2024-01-31 16:05:32,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:32,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:32,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:33,514 INFO L124 PetriNetUnfolderBase]: 1780/3349 cut-off events. [2024-01-31 16:05:33,514 INFO L125 PetriNetUnfolderBase]: For 66920/66958 co-relation queries the response was YES. [2024-01-31 16:05:33,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20501 conditions, 3349 events. 1780/3349 cut-off events. For 66920/66958 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 22658 event pairs, 382 based on Foata normal form. 29/3326 useless extension candidates. Maximal degree in co-relation 20379. Up to 1880 conditions per place. [2024-01-31 16:05:33,555 INFO L140 encePairwiseOnDemand]: 56/73 looper letters, 310 selfloop transitions, 160 changer transitions 0/491 dead transitions. [2024-01-31 16:05:33,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 491 transitions, 8623 flow [2024-01-31 16:05:33,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 16:05:33,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 16:05:33,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 399 transitions. [2024-01-31 16:05:33,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4554794520547945 [2024-01-31 16:05:33,558 INFO L175 Difference]: Start difference. First operand has 329 places, 389 transitions, 6798 flow. Second operand 12 states and 399 transitions. [2024-01-31 16:05:33,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 491 transitions, 8623 flow [2024-01-31 16:05:33,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 491 transitions, 8551 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-01-31 16:05:33,887 INFO L231 Difference]: Finished difference. Result has 339 places, 416 transitions, 7441 flow [2024-01-31 16:05:33,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6726, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7441, PETRI_PLACES=339, PETRI_TRANSITIONS=416} [2024-01-31 16:05:33,888 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 262 predicate places. [2024-01-31 16:05:33,888 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 416 transitions, 7441 flow [2024-01-31 16:05:33,888 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) [2024-01-31 16:05:33,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:33,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:33,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-01-31 16:05:33,888 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:33,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:33,889 INFO L85 PathProgramCache]: Analyzing trace with hash -232780721, now seen corresponding path program 3 times [2024-01-31 16:05:33,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:33,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714839547] [2024-01-31 16:05:33,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:33,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:33,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:34,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:34,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:34,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714839547] [2024-01-31 16:05:34,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714839547] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:34,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:34,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:05:34,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334110768] [2024-01-31 16:05:34,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:34,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:05:34,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:34,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:05:34,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:05:34,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:34,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 416 transitions, 7441 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) [2024-01-31 16:05:34,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:34,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:34,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:35,078 INFO L124 PetriNetUnfolderBase]: 2256/4138 cut-off events. [2024-01-31 16:05:35,079 INFO L125 PetriNetUnfolderBase]: For 82057/82273 co-relation queries the response was YES. [2024-01-31 16:05:35,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26361 conditions, 4138 events. 2256/4138 cut-off events. For 82057/82273 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 27879 event pairs, 509 based on Foata normal form. 77/4085 useless extension candidates. Maximal degree in co-relation 26236. Up to 2930 conditions per place. [2024-01-31 16:05:35,135 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 292 selfloop transitions, 114 changer transitions 0/438 dead transitions. [2024-01-31 16:05:35,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 438 transitions, 8367 flow [2024-01-31 16:05:35,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:05:35,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:05:35,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 197 transitions. [2024-01-31 16:05:35,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497716894977169 [2024-01-31 16:05:35,136 INFO L175 Difference]: Start difference. First operand has 339 places, 416 transitions, 7441 flow. Second operand 6 states and 197 transitions. [2024-01-31 16:05:35,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 438 transitions, 8367 flow [2024-01-31 16:05:35,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 438 transitions, 7983 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-01-31 16:05:35,558 INFO L231 Difference]: Finished difference. Result has 337 places, 418 transitions, 7334 flow [2024-01-31 16:05:35,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7061, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7334, PETRI_PLACES=337, PETRI_TRANSITIONS=418} [2024-01-31 16:05:35,559 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 260 predicate places. [2024-01-31 16:05:35,559 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 418 transitions, 7334 flow [2024-01-31 16:05:35,559 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) [2024-01-31 16:05:35,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:35,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:35,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-01-31 16:05:35,560 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:35,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:35,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1865827103, now seen corresponding path program 2 times [2024-01-31 16:05:35,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:35,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243104061] [2024-01-31 16:05:35,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:35,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:35,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:35,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:35,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:35,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243104061] [2024-01-31 16:05:35,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243104061] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:35,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:35,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:05:35,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496808903] [2024-01-31 16:05:35,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:35,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:05:35,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:35,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:05:35,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:05:35,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:35,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 418 transitions, 7334 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) [2024-01-31 16:05:35,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:35,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:35,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:36,821 INFO L124 PetriNetUnfolderBase]: 2079/3875 cut-off events. [2024-01-31 16:05:36,822 INFO L125 PetriNetUnfolderBase]: For 88382/88430 co-relation queries the response was YES. [2024-01-31 16:05:36,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24907 conditions, 3875 events. 2079/3875 cut-off events. For 88382/88430 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 26680 event pairs, 471 based on Foata normal form. 35/3866 useless extension candidates. Maximal degree in co-relation 24781. Up to 1314 conditions per place. [2024-01-31 16:05:36,867 INFO L140 encePairwiseOnDemand]: 61/73 looper letters, 357 selfloop transitions, 176 changer transitions 0/554 dead transitions. [2024-01-31 16:05:36,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 554 transitions, 9841 flow [2024-01-31 16:05:36,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-01-31 16:05:36,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-01-31 16:05:36,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 436 transitions. [2024-01-31 16:05:36,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594309799789252 [2024-01-31 16:05:36,869 INFO L175 Difference]: Start difference. First operand has 337 places, 418 transitions, 7334 flow. Second operand 13 states and 436 transitions. [2024-01-31 16:05:36,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 554 transitions, 9841 flow [2024-01-31 16:05:37,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 554 transitions, 9752 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-01-31 16:05:37,281 INFO L231 Difference]: Finished difference. Result has 347 places, 437 transitions, 7883 flow [2024-01-31 16:05:37,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7245, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7883, PETRI_PLACES=347, PETRI_TRANSITIONS=437} [2024-01-31 16:05:37,282 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 270 predicate places. [2024-01-31 16:05:37,282 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 437 transitions, 7883 flow [2024-01-31 16:05:37,282 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) [2024-01-31 16:05:37,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:37,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:37,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-01-31 16:05:37,283 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:37,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:37,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1118963363, now seen corresponding path program 3 times [2024-01-31 16:05:37,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:37,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267611975] [2024-01-31 16:05:37,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:37,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:37,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:37,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:37,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:37,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267611975] [2024-01-31 16:05:37,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267611975] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:37,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:37,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:05:37,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349245733] [2024-01-31 16:05:37,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:37,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:05:37,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:37,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:05:37,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:05:37,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:37,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 437 transitions, 7883 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) [2024-01-31 16:05:37,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:37,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:37,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:38,431 INFO L124 PetriNetUnfolderBase]: 2090/3908 cut-off events. [2024-01-31 16:05:38,431 INFO L125 PetriNetUnfolderBase]: For 89053/89095 co-relation queries the response was YES. [2024-01-31 16:05:38,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26050 conditions, 3908 events. 2090/3908 cut-off events. For 89053/89095 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 27101 event pairs, 457 based on Foata normal form. 5/3861 useless extension candidates. Maximal degree in co-relation 25923. Up to 2891 conditions per place. [2024-01-31 16:05:38,478 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 333 selfloop transitions, 109 changer transitions 0/463 dead transitions. [2024-01-31 16:05:38,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 463 transitions, 8887 flow [2024-01-31 16:05:38,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:38,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:38,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 248 transitions. [2024-01-31 16:05:38,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4246575342465753 [2024-01-31 16:05:38,479 INFO L175 Difference]: Start difference. First operand has 347 places, 437 transitions, 7883 flow. Second operand 8 states and 248 transitions. [2024-01-31 16:05:38,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 463 transitions, 8887 flow [2024-01-31 16:05:38,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 463 transitions, 8646 flow, removed 33 selfloop flow, removed 4 redundant places. [2024-01-31 16:05:38,910 INFO L231 Difference]: Finished difference. Result has 352 places, 441 transitions, 7954 flow [2024-01-31 16:05:38,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7642, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7954, PETRI_PLACES=352, PETRI_TRANSITIONS=441} [2024-01-31 16:05:38,911 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 275 predicate places. [2024-01-31 16:05:38,911 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 441 transitions, 7954 flow [2024-01-31 16:05:38,911 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) [2024-01-31 16:05:38,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:38,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:38,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-01-31 16:05:38,911 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:38,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:38,912 INFO L85 PathProgramCache]: Analyzing trace with hash 695165335, now seen corresponding path program 1 times [2024-01-31 16:05:38,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:38,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300801840] [2024-01-31 16:05:38,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:38,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:38,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:39,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:39,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:39,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300801840] [2024-01-31 16:05:39,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300801840] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:39,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:39,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:39,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440211504] [2024-01-31 16:05:39,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:39,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:39,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:39,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:39,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:39,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:05:39,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 441 transitions, 7954 flow. Second operand has 8 states, 8 states have (on average 32.625) internal successors, (261), 8 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:39,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:39,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:05:39,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:39,868 INFO L124 PetriNetUnfolderBase]: 1704/3396 cut-off events. [2024-01-31 16:05:39,868 INFO L125 PetriNetUnfolderBase]: For 88979/89083 co-relation queries the response was YES. [2024-01-31 16:05:39,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22726 conditions, 3396 events. 1704/3396 cut-off events. For 88979/89083 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 24861 event pairs, 295 based on Foata normal form. 52/3357 useless extension candidates. Maximal degree in co-relation 22596. Up to 1311 conditions per place. [2024-01-31 16:05:39,909 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 298 selfloop transitions, 161 changer transitions 2/507 dead transitions. [2024-01-31 16:05:39,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 507 transitions, 9623 flow [2024-01-31 16:05:39,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:39,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:39,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 339 transitions. [2024-01-31 16:05:39,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5804794520547946 [2024-01-31 16:05:39,910 INFO L175 Difference]: Start difference. First operand has 352 places, 441 transitions, 7954 flow. Second operand 8 states and 339 transitions. [2024-01-31 16:05:39,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 507 transitions, 9623 flow [2024-01-31 16:05:40,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 507 transitions, 9447 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-01-31 16:05:40,282 INFO L231 Difference]: Finished difference. Result has 355 places, 445 transitions, 8165 flow [2024-01-31 16:05:40,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7780, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8165, PETRI_PLACES=355, PETRI_TRANSITIONS=445} [2024-01-31 16:05:40,283 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 278 predicate places. [2024-01-31 16:05:40,283 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 445 transitions, 8165 flow [2024-01-31 16:05:40,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.625) internal successors, (261), 8 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:40,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:40,284 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] [2024-01-31 16:05:40,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-01-31 16:05:40,284 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:40,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:40,284 INFO L85 PathProgramCache]: Analyzing trace with hash 402494655, now seen corresponding path program 2 times [2024-01-31 16:05:40,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:40,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610420217] [2024-01-31 16:05:40,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:40,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:40,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:40,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:40,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:40,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610420217] [2024-01-31 16:05:40,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610420217] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:40,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:40,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:40,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821511940] [2024-01-31 16:05:40,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:40,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:40,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:40,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:40,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:40,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:05:40,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 445 transitions, 8165 flow. Second operand has 8 states, 8 states have (on average 32.625) internal successors, (261), 8 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:40,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:40,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:05:40,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:41,258 INFO L124 PetriNetUnfolderBase]: 1736/3460 cut-off events. [2024-01-31 16:05:41,259 INFO L125 PetriNetUnfolderBase]: For 92000/92102 co-relation queries the response was YES. [2024-01-31 16:05:41,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23570 conditions, 3460 events. 1736/3460 cut-off events. For 92000/92102 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 25426 event pairs, 295 based on Foata normal form. 40/3409 useless extension candidates. Maximal degree in co-relation 23440. Up to 1311 conditions per place. [2024-01-31 16:05:41,304 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 304 selfloop transitions, 161 changer transitions 2/513 dead transitions. [2024-01-31 16:05:41,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 513 transitions, 9908 flow [2024-01-31 16:05:41,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:41,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:41,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 343 transitions. [2024-01-31 16:05:41,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5873287671232876 [2024-01-31 16:05:41,305 INFO L175 Difference]: Start difference. First operand has 355 places, 445 transitions, 8165 flow. Second operand 8 states and 343 transitions. [2024-01-31 16:05:41,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 513 transitions, 9908 flow [2024-01-31 16:05:41,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 513 transitions, 9514 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-01-31 16:05:41,715 INFO L231 Difference]: Finished difference. Result has 358 places, 448 transitions, 8156 flow [2024-01-31 16:05:41,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7783, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8156, PETRI_PLACES=358, PETRI_TRANSITIONS=448} [2024-01-31 16:05:41,715 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 281 predicate places. [2024-01-31 16:05:41,715 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 448 transitions, 8156 flow [2024-01-31 16:05:41,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.625) internal successors, (261), 8 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:41,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:41,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:41,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-01-31 16:05:41,716 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:41,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:41,717 INFO L85 PathProgramCache]: Analyzing trace with hash 64195695, now seen corresponding path program 4 times [2024-01-31 16:05:41,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:41,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490916133] [2024-01-31 16:05:41,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:41,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:41,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:41,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:41,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:41,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490916133] [2024-01-31 16:05:41,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490916133] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:41,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:41,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:05:41,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099529701] [2024-01-31 16:05:41,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:41,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:05:41,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:41,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:05:41,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:05:42,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:42,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 448 transitions, 8156 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) [2024-01-31 16:05:42,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:42,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:42,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:42,997 INFO L124 PetriNetUnfolderBase]: 2182/4086 cut-off events. [2024-01-31 16:05:42,998 INFO L125 PetriNetUnfolderBase]: For 97611/97653 co-relation queries the response was YES. [2024-01-31 16:05:43,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26686 conditions, 4086 events. 2182/4086 cut-off events. For 97611/97653 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 28601 event pairs, 441 based on Foata normal form. 5/4039 useless extension candidates. Maximal degree in co-relation 26555. Up to 3031 conditions per place. [2024-01-31 16:05:43,041 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 330 selfloop transitions, 141 changer transitions 0/492 dead transitions. [2024-01-31 16:05:43,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 492 transitions, 9530 flow [2024-01-31 16:05:43,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:05:43,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:05:43,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 276 transitions. [2024-01-31 16:05:43,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4200913242009132 [2024-01-31 16:05:43,042 INFO L175 Difference]: Start difference. First operand has 358 places, 448 transitions, 8156 flow. Second operand 9 states and 276 transitions. [2024-01-31 16:05:43,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 492 transitions, 9530 flow [2024-01-31 16:05:43,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 492 transitions, 9235 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 16:05:43,495 INFO L231 Difference]: Finished difference. Result has 364 places, 468 transitions, 8535 flow [2024-01-31 16:05:43,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7865, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8535, PETRI_PLACES=364, PETRI_TRANSITIONS=468} [2024-01-31 16:05:43,496 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 287 predicate places. [2024-01-31 16:05:43,496 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 468 transitions, 8535 flow [2024-01-31 16:05:43,496 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) [2024-01-31 16:05:43,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:43,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:43,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-01-31 16:05:43,496 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:43,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:43,497 INFO L85 PathProgramCache]: Analyzing trace with hash 370873405, now seen corresponding path program 3 times [2024-01-31 16:05:43,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:43,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188826301] [2024-01-31 16:05:43,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:43,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:43,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:43,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:43,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:43,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188826301] [2024-01-31 16:05:43,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188826301] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:43,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:43,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:43,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392516338] [2024-01-31 16:05:43,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:43,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:43,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:43,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:43,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:43,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:05:43,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 468 transitions, 8535 flow. Second operand has 8 states, 8 states have (on average 32.625) internal successors, (261), 8 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:43,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:43,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:05:43,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:44,473 INFO L124 PetriNetUnfolderBase]: 1799/3588 cut-off events. [2024-01-31 16:05:44,473 INFO L125 PetriNetUnfolderBase]: For 94082/94173 co-relation queries the response was YES. [2024-01-31 16:05:44,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24052 conditions, 3588 events. 1799/3588 cut-off events. For 94082/94173 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 26512 event pairs, 260 based on Foata normal form. 33/3527 useless extension candidates. Maximal degree in co-relation 23919. Up to 1061 conditions per place. [2024-01-31 16:05:44,518 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 275 selfloop transitions, 207 changer transitions 2/530 dead transitions. [2024-01-31 16:05:44,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 530 transitions, 10184 flow [2024-01-31 16:05:44,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:44,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:44,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 337 transitions. [2024-01-31 16:05:44,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.577054794520548 [2024-01-31 16:05:44,519 INFO L175 Difference]: Start difference. First operand has 364 places, 468 transitions, 8535 flow. Second operand 8 states and 337 transitions. [2024-01-31 16:05:44,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 530 transitions, 10184 flow [2024-01-31 16:05:44,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 530 transitions, 9999 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-01-31 16:05:44,996 INFO L231 Difference]: Finished difference. Result has 369 places, 489 transitions, 9212 flow [2024-01-31 16:05:44,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8350, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9212, PETRI_PLACES=369, PETRI_TRANSITIONS=489} [2024-01-31 16:05:44,997 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 292 predicate places. [2024-01-31 16:05:44,997 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 489 transitions, 9212 flow [2024-01-31 16:05:44,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.625) internal successors, (261), 8 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:44,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:44,997 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] [2024-01-31 16:05:44,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-01-31 16:05:44,998 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:44,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:44,998 INFO L85 PathProgramCache]: Analyzing trace with hash 55604921, now seen corresponding path program 5 times [2024-01-31 16:05:44,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:44,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508732041] [2024-01-31 16:05:44,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:44,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:45,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:45,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:45,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:45,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508732041] [2024-01-31 16:05:45,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508732041] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:45,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:45,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:05:45,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721336988] [2024-01-31 16:05:45,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:45,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:05:45,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:45,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:05:45,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:05:45,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:45,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 489 transitions, 9212 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) [2024-01-31 16:05:45,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:45,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:45,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:46,198 INFO L124 PetriNetUnfolderBase]: 2208/4136 cut-off events. [2024-01-31 16:05:46,198 INFO L125 PetriNetUnfolderBase]: For 104410/104452 co-relation queries the response was YES. [2024-01-31 16:05:46,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28118 conditions, 4136 events. 2208/4136 cut-off events. For 104410/104452 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 28985 event pairs, 423 based on Foata normal form. 5/4089 useless extension candidates. Maximal degree in co-relation 27983. Up to 3077 conditions per place. [2024-01-31 16:05:46,262 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 352 selfloop transitions, 139 changer transitions 0/512 dead transitions. [2024-01-31 16:05:46,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 512 transitions, 10264 flow [2024-01-31 16:05:46,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:46,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:46,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 247 transitions. [2024-01-31 16:05:46,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229452054794521 [2024-01-31 16:05:46,264 INFO L175 Difference]: Start difference. First operand has 369 places, 489 transitions, 9212 flow. Second operand 8 states and 247 transitions. [2024-01-31 16:05:46,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 512 transitions, 10264 flow [2024-01-31 16:05:46,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 512 transitions, 9880 flow, removed 13 selfloop flow, removed 13 redundant places. [2024-01-31 16:05:46,958 INFO L231 Difference]: Finished difference. Result has 363 places, 490 transitions, 9149 flow [2024-01-31 16:05:46,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8801, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9149, PETRI_PLACES=363, PETRI_TRANSITIONS=490} [2024-01-31 16:05:46,959 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 286 predicate places. [2024-01-31 16:05:46,959 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 490 transitions, 9149 flow [2024-01-31 16:05:46,959 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) [2024-01-31 16:05:46,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:46,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:46,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-01-31 16:05:46,959 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:46,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:46,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1786556527, now seen corresponding path program 4 times [2024-01-31 16:05:46,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:46,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712899127] [2024-01-31 16:05:46,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:46,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:47,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:47,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:47,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712899127] [2024-01-31 16:05:47,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712899127] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:47,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:47,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:47,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497519996] [2024-01-31 16:05:47,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:47,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:47,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:47,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:47,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:47,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:05:47,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 490 transitions, 9149 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) [2024-01-31 16:05:47,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:47,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:05:47,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:47,990 INFO L124 PetriNetUnfolderBase]: 1811/3635 cut-off events. [2024-01-31 16:05:47,990 INFO L125 PetriNetUnfolderBase]: For 102386/102477 co-relation queries the response was YES. [2024-01-31 16:05:48,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24740 conditions, 3635 events. 1811/3635 cut-off events. For 102386/102477 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 27115 event pairs, 355 based on Foata normal form. 45/3583 useless extension candidates. Maximal degree in co-relation 24613. Up to 2085 conditions per place. [2024-01-31 16:05:48,033 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 341 selfloop transitions, 150 changer transitions 0/538 dead transitions. [2024-01-31 16:05:48,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 538 transitions, 10636 flow [2024-01-31 16:05:48,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:05:48,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:05:48,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 375 transitions. [2024-01-31 16:05:48,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5707762557077626 [2024-01-31 16:05:48,034 INFO L175 Difference]: Start difference. First operand has 363 places, 490 transitions, 9149 flow. Second operand 9 states and 375 transitions. [2024-01-31 16:05:48,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 538 transitions, 10636 flow [2024-01-31 16:05:48,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 538 transitions, 10362 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-01-31 16:05:48,471 INFO L231 Difference]: Finished difference. Result has 367 places, 492 transitions, 9215 flow [2024-01-31 16:05:48,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8875, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9215, PETRI_PLACES=367, PETRI_TRANSITIONS=492} [2024-01-31 16:05:48,472 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 290 predicate places. [2024-01-31 16:05:48,472 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 492 transitions, 9215 flow [2024-01-31 16:05:48,472 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) [2024-01-31 16:05:48,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:48,472 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] [2024-01-31 16:05:48,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-01-31 16:05:48,472 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:48,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:48,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1682668039, now seen corresponding path program 5 times [2024-01-31 16:05:48,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:48,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555421424] [2024-01-31 16:05:48,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:48,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:48,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:48,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:48,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:48,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555421424] [2024-01-31 16:05:48,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555421424] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:48,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:48,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:48,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690065641] [2024-01-31 16:05:48,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:48,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:48,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:48,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:48,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:48,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:05:48,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 492 transitions, 9215 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) [2024-01-31 16:05:48,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:48,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:05:48,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:49,502 INFO L124 PetriNetUnfolderBase]: 1807/3629 cut-off events. [2024-01-31 16:05:49,502 INFO L125 PetriNetUnfolderBase]: For 98495/98582 co-relation queries the response was YES. [2024-01-31 16:05:49,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24720 conditions, 3629 events. 1807/3629 cut-off events. For 98495/98582 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 27032 event pairs, 349 based on Foata normal form. 33/3566 useless extension candidates. Maximal degree in co-relation 24592. Up to 2089 conditions per place. [2024-01-31 16:05:49,548 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 333 selfloop transitions, 155 changer transitions 0/535 dead transitions. [2024-01-31 16:05:49,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 535 transitions, 10603 flow [2024-01-31 16:05:49,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:05:49,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:05:49,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 373 transitions. [2024-01-31 16:05:49,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5677321156773212 [2024-01-31 16:05:49,550 INFO L175 Difference]: Start difference. First operand has 367 places, 492 transitions, 9215 flow. Second operand 9 states and 373 transitions. [2024-01-31 16:05:49,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 535 transitions, 10603 flow [2024-01-31 16:05:49,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 535 transitions, 10223 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-01-31 16:05:49,984 INFO L231 Difference]: Finished difference. Result has 368 places, 493 transitions, 9165 flow [2024-01-31 16:05:49,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8839, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9165, PETRI_PLACES=368, PETRI_TRANSITIONS=493} [2024-01-31 16:05:49,984 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 291 predicate places. [2024-01-31 16:05:49,984 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 493 transitions, 9165 flow [2024-01-31 16:05:49,985 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) [2024-01-31 16:05:49,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:49,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:49,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-01-31 16:05:49,985 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:49,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:49,985 INFO L85 PathProgramCache]: Analyzing trace with hash 964292895, now seen corresponding path program 4 times [2024-01-31 16:05:49,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:49,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018864852] [2024-01-31 16:05:49,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:49,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:49,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:50,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:50,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:50,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018864852] [2024-01-31 16:05:50,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018864852] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:50,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:50,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:05:50,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322325632] [2024-01-31 16:05:50,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:50,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:05:50,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:50,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:05:50,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:05:50,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:50,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 493 transitions, 9165 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) [2024-01-31 16:05:50,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:50,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:50,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:51,347 INFO L124 PetriNetUnfolderBase]: 2696/4948 cut-off events. [2024-01-31 16:05:51,347 INFO L125 PetriNetUnfolderBase]: For 118532/118749 co-relation queries the response was YES. [2024-01-31 16:05:51,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32123 conditions, 4948 events. 2696/4948 cut-off events. For 118532/118749 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 34484 event pairs, 667 based on Foata normal form. 59/4861 useless extension candidates. Maximal degree in co-relation 31995. Up to 3512 conditions per place. [2024-01-31 16:05:51,404 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 371 selfloop transitions, 112 changer transitions 0/517 dead transitions. [2024-01-31 16:05:51,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 517 transitions, 10232 flow [2024-01-31 16:05:51,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:51,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:51,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 246 transitions. [2024-01-31 16:05:51,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212328767123288 [2024-01-31 16:05:51,405 INFO L175 Difference]: Start difference. First operand has 368 places, 493 transitions, 9165 flow. Second operand 8 states and 246 transitions. [2024-01-31 16:05:51,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 517 transitions, 10232 flow [2024-01-31 16:05:52,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 517 transitions, 9965 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-31 16:05:52,043 INFO L231 Difference]: Finished difference. Result has 371 places, 494 transitions, 9139 flow [2024-01-31 16:05:52,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8900, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9139, PETRI_PLACES=371, PETRI_TRANSITIONS=494} [2024-01-31 16:05:52,043 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 294 predicate places. [2024-01-31 16:05:52,044 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 494 transitions, 9139 flow [2024-01-31 16:05:52,044 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) [2024-01-31 16:05:52,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:52,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:52,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-01-31 16:05:52,044 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:52,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:52,045 INFO L85 PathProgramCache]: Analyzing trace with hash 995211323, now seen corresponding path program 1 times [2024-01-31 16:05:52,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:52,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659483442] [2024-01-31 16:05:52,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:52,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:52,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:52,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:52,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:52,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659483442] [2024-01-31 16:05:52,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659483442] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:52,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:52,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:52,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380807544] [2024-01-31 16:05:52,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:52,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:52,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:52,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:52,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:52,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:05:52,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 494 transitions, 9139 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) [2024-01-31 16:05:52,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:52,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:05:52,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:53,156 INFO L124 PetriNetUnfolderBase]: 1805/3627 cut-off events. [2024-01-31 16:05:53,156 INFO L125 PetriNetUnfolderBase]: For 97413/97500 co-relation queries the response was YES. [2024-01-31 16:05:53,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24301 conditions, 3627 events. 1805/3627 cut-off events. For 97413/97500 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 26960 event pairs, 339 based on Foata normal form. 33/3564 useless extension candidates. Maximal degree in co-relation 24172. Up to 2097 conditions per place. [2024-01-31 16:05:53,209 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 334 selfloop transitions, 160 changer transitions 0/541 dead transitions. [2024-01-31 16:05:53,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 541 transitions, 10488 flow [2024-01-31 16:05:53,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 16:05:53,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 16:05:53,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 475 transitions. [2024-01-31 16:05:53,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5422374429223744 [2024-01-31 16:05:53,210 INFO L175 Difference]: Start difference. First operand has 371 places, 494 transitions, 9139 flow. Second operand 12 states and 475 transitions. [2024-01-31 16:05:53,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 541 transitions, 10488 flow [2024-01-31 16:05:53,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 541 transitions, 10351 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-01-31 16:05:53,748 INFO L231 Difference]: Finished difference. Result has 378 places, 495 transitions, 9337 flow [2024-01-31 16:05:53,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9002, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9337, PETRI_PLACES=378, PETRI_TRANSITIONS=495} [2024-01-31 16:05:53,748 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 301 predicate places. [2024-01-31 16:05:53,749 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 495 transitions, 9337 flow [2024-01-31 16:05:53,749 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) [2024-01-31 16:05:53,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:53,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:53,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-01-31 16:05:53,749 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:53,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:53,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1497782991, now seen corresponding path program 5 times [2024-01-31 16:05:53,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:53,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975127921] [2024-01-31 16:05:53,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:53,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:53,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:54,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:54,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:54,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975127921] [2024-01-31 16:05:54,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975127921] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:54,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:54,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:05:54,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267517809] [2024-01-31 16:05:54,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:54,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:05:54,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:54,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:05:54,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:05:54,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:54,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 495 transitions, 9337 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) [2024-01-31 16:05:54,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:54,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:54,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:55,188 INFO L124 PetriNetUnfolderBase]: 2689/4942 cut-off events. [2024-01-31 16:05:55,188 INFO L125 PetriNetUnfolderBase]: For 120306/120524 co-relation queries the response was YES. [2024-01-31 16:05:55,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32058 conditions, 4942 events. 2689/4942 cut-off events. For 120306/120524 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 34438 event pairs, 656 based on Foata normal form. 59/4856 useless extension candidates. Maximal degree in co-relation 31928. Up to 3498 conditions per place. [2024-01-31 16:05:55,257 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 380 selfloop transitions, 115 changer transitions 0/529 dead transitions. [2024-01-31 16:05:55,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 529 transitions, 10492 flow [2024-01-31 16:05:55,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:05:55,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:05:55,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 281 transitions. [2024-01-31 16:05:55,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4277016742770167 [2024-01-31 16:05:55,258 INFO L175 Difference]: Start difference. First operand has 378 places, 495 transitions, 9337 flow. Second operand 9 states and 281 transitions. [2024-01-31 16:05:55,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 529 transitions, 10492 flow [2024-01-31 16:05:55,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 529 transitions, 10202 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-31 16:05:55,905 INFO L231 Difference]: Finished difference. Result has 379 places, 496 transitions, 9295 flow [2024-01-31 16:05:55,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9049, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9295, PETRI_PLACES=379, PETRI_TRANSITIONS=496} [2024-01-31 16:05:55,905 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 302 predicate places. [2024-01-31 16:05:55,906 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 496 transitions, 9295 flow [2024-01-31 16:05:55,906 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) [2024-01-31 16:05:55,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:55,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:55,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-01-31 16:05:55,906 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:55,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:55,907 INFO L85 PathProgramCache]: Analyzing trace with hash -752234971, now seen corresponding path program 6 times [2024-01-31 16:05:55,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:55,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688284235] [2024-01-31 16:05:55,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:55,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:55,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:56,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:56,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:56,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688284235] [2024-01-31 16:05:56,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688284235] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:56,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:56,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:05:56,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618740593] [2024-01-31 16:05:56,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:56,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:05:56,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:56,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:05:56,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:05:56,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:56,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 496 transitions, 9295 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) [2024-01-31 16:05:56,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:56,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:56,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:57,393 INFO L124 PetriNetUnfolderBase]: 2679/4918 cut-off events. [2024-01-31 16:05:57,393 INFO L125 PetriNetUnfolderBase]: For 119816/120050 co-relation queries the response was YES. [2024-01-31 16:05:57,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31767 conditions, 4918 events. 2679/4918 cut-off events. For 119816/120050 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 34244 event pairs, 734 based on Foata normal form. 59/4826 useless extension candidates. Maximal degree in co-relation 31636. Up to 4130 conditions per place. [2024-01-31 16:05:57,457 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 420 selfloop transitions, 72 changer transitions 0/526 dead transitions. [2024-01-31 16:05:57,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 526 transitions, 10402 flow [2024-01-31 16:05:57,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:05:57,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:05:57,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 321 transitions. [2024-01-31 16:05:57,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39975093399750933 [2024-01-31 16:05:57,458 INFO L175 Difference]: Start difference. First operand has 379 places, 496 transitions, 9295 flow. Second operand 11 states and 321 transitions. [2024-01-31 16:05:57,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 526 transitions, 10402 flow [2024-01-31 16:05:58,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 526 transitions, 10265 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-01-31 16:05:58,103 INFO L231 Difference]: Finished difference. Result has 385 places, 496 transitions, 9309 flow [2024-01-31 16:05:58,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9158, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9309, PETRI_PLACES=385, PETRI_TRANSITIONS=496} [2024-01-31 16:05:58,103 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 308 predicate places. [2024-01-31 16:05:58,104 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 496 transitions, 9309 flow [2024-01-31 16:05:58,104 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) [2024-01-31 16:05:58,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:58,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:58,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-01-31 16:05:58,104 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:58,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:58,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1206842629, now seen corresponding path program 6 times [2024-01-31 16:05:58,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:58,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045534669] [2024-01-31 16:05:58,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:58,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:58,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:58,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:58,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:58,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045534669] [2024-01-31 16:05:58,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045534669] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:58,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:58,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:58,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597417449] [2024-01-31 16:05:58,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:58,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:58,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:58,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:58,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:58,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:05:58,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 496 transitions, 9309 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) [2024-01-31 16:05:58,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:58,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:05:58,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:59,131 INFO L124 PetriNetUnfolderBase]: 1813/3634 cut-off events. [2024-01-31 16:05:59,131 INFO L125 PetriNetUnfolderBase]: For 102411/102498 co-relation queries the response was YES. [2024-01-31 16:05:59,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24231 conditions, 3634 events. 1813/3634 cut-off events. For 102411/102498 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 26994 event pairs, 247 based on Foata normal form. 45/3584 useless extension candidates. Maximal degree in co-relation 24099. Up to 1114 conditions per place. [2024-01-31 16:05:59,178 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 294 selfloop transitions, 202 changer transitions 0/543 dead transitions. [2024-01-31 16:05:59,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 543 transitions, 10808 flow [2024-01-31 16:05:59,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:59,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:59,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 339 transitions. [2024-01-31 16:05:59,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5804794520547946 [2024-01-31 16:05:59,179 INFO L175 Difference]: Start difference. First operand has 385 places, 496 transitions, 9309 flow. Second operand 8 states and 339 transitions. [2024-01-31 16:05:59,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 543 transitions, 10808 flow [2024-01-31 16:05:59,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 543 transitions, 10650 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-01-31 16:05:59,763 INFO L231 Difference]: Finished difference. Result has 384 places, 498 transitions, 9623 flow [2024-01-31 16:05:59,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9153, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9623, PETRI_PLACES=384, PETRI_TRANSITIONS=498} [2024-01-31 16:05:59,764 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 307 predicate places. [2024-01-31 16:05:59,764 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 498 transitions, 9623 flow [2024-01-31 16:05:59,764 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) [2024-01-31 16:05:59,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:59,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:59,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-01-31 16:05:59,765 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:59,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:59,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1490752839, now seen corresponding path program 7 times [2024-01-31 16:05:59,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:59,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360588427] [2024-01-31 16:05:59,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:59,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:59,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:59,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:59,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:59,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360588427] [2024-01-31 16:05:59,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360588427] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:59,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:59,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:59,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290794469] [2024-01-31 16:05:59,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:59,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:59,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:59,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:59,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:59,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:05:59,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 498 transitions, 9623 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) [2024-01-31 16:05:59,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:59,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:05:59,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:00,857 INFO L124 PetriNetUnfolderBase]: 1810/3632 cut-off events. [2024-01-31 16:06:00,858 INFO L125 PetriNetUnfolderBase]: For 100343/100424 co-relation queries the response was YES. [2024-01-31 16:06:00,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24691 conditions, 3632 events. 1810/3632 cut-off events. For 100343/100424 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 26933 event pairs, 243 based on Foata normal form. 33/3571 useless extension candidates. Maximal degree in co-relation 24557. Up to 1118 conditions per place. [2024-01-31 16:06:00,903 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 261 selfloop transitions, 233 changer transitions 0/541 dead transitions. [2024-01-31 16:06:00,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 541 transitions, 11031 flow [2024-01-31 16:06:00,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:06:00,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:06:00,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 339 transitions. [2024-01-31 16:06:00,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5804794520547946 [2024-01-31 16:06:00,904 INFO L175 Difference]: Start difference. First operand has 384 places, 498 transitions, 9623 flow. Second operand 8 states and 339 transitions. [2024-01-31 16:06:00,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 541 transitions, 11031 flow [2024-01-31 16:06:01,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 541 transitions, 10644 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-01-31 16:06:01,441 INFO L231 Difference]: Finished difference. Result has 386 places, 499 transitions, 9729 flow [2024-01-31 16:06:01,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9241, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=232, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9729, PETRI_PLACES=386, PETRI_TRANSITIONS=499} [2024-01-31 16:06:01,441 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 309 predicate places. [2024-01-31 16:06:01,442 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 499 transitions, 9729 flow [2024-01-31 16:06:01,442 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) [2024-01-31 16:06:01,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:01,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:01,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-01-31 16:06:01,442 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:01,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:01,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1510305879, now seen corresponding path program 8 times [2024-01-31 16:06:01,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:01,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76683558] [2024-01-31 16:06:01,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:01,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:01,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:01,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:01,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:01,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76683558] [2024-01-31 16:06:01,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76683558] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:01,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:01,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:01,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578601629] [2024-01-31 16:06:01,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:01,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:06:01,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:01,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:06:01,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:06:01,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:06:01,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 499 transitions, 9729 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) [2024-01-31 16:06:01,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:01,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:06:01,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:02,550 INFO L124 PetriNetUnfolderBase]: 1768/3573 cut-off events. [2024-01-31 16:06:02,550 INFO L125 PetriNetUnfolderBase]: For 97866/97951 co-relation queries the response was YES. [2024-01-31 16:06:02,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23913 conditions, 3573 events. 1768/3573 cut-off events. For 97866/97951 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 26612 event pairs, 289 based on Foata normal form. 52/3539 useless extension candidates. Maximal degree in co-relation 23779. Up to 2144 conditions per place. [2024-01-31 16:06:02,591 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 319 selfloop transitions, 169 changer transitions 0/535 dead transitions. [2024-01-31 16:06:02,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 535 transitions, 11044 flow [2024-01-31 16:06:02,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:06:02,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:06:02,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 300 transitions. [2024-01-31 16:06:02,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5870841487279843 [2024-01-31 16:06:02,593 INFO L175 Difference]: Start difference. First operand has 386 places, 499 transitions, 9729 flow. Second operand 7 states and 300 transitions. [2024-01-31 16:06:02,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 535 transitions, 11044 flow [2024-01-31 16:06:03,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 535 transitions, 10842 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-01-31 16:06:03,034 INFO L231 Difference]: Finished difference. Result has 389 places, 499 transitions, 9910 flow [2024-01-31 16:06:03,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9529, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9910, PETRI_PLACES=389, PETRI_TRANSITIONS=499} [2024-01-31 16:06:03,034 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 312 predicate places. [2024-01-31 16:06:03,034 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 499 transitions, 9910 flow [2024-01-31 16:06:03,035 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) [2024-01-31 16:06:03,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:03,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:03,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-01-31 16:06:03,036 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:03,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:03,037 INFO L85 PathProgramCache]: Analyzing trace with hash 451528423, now seen corresponding path program 2 times [2024-01-31 16:06:03,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:03,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224276237] [2024-01-31 16:06:03,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:03,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:03,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:03,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:03,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:03,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224276237] [2024-01-31 16:06:03,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224276237] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:03,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:03,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:03,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411922612] [2024-01-31 16:06:03,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:03,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:06:03,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:03,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:06:03,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:06:03,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:06:03,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 499 transitions, 9910 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) [2024-01-31 16:06:03,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:03,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:06:03,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:04,293 INFO L124 PetriNetUnfolderBase]: 1774/3597 cut-off events. [2024-01-31 16:06:04,293 INFO L125 PetriNetUnfolderBase]: For 91340/91422 co-relation queries the response was YES. [2024-01-31 16:06:04,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23893 conditions, 3597 events. 1774/3597 cut-off events. For 91340/91422 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 26815 event pairs, 212 based on Foata normal form. 38/3551 useless extension candidates. Maximal degree in co-relation 23759. Up to 1120 conditions per place. [2024-01-31 16:06:04,340 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 283 selfloop transitions, 225 changer transitions 0/555 dead transitions. [2024-01-31 16:06:04,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 555 transitions, 11424 flow [2024-01-31 16:06:04,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:06:04,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:06:04,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 448 transitions. [2024-01-31 16:06:04,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5579078455790785 [2024-01-31 16:06:04,341 INFO L175 Difference]: Start difference. First operand has 389 places, 499 transitions, 9910 flow. Second operand 11 states and 448 transitions. [2024-01-31 16:06:04,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 555 transitions, 11424 flow [2024-01-31 16:06:04,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 555 transitions, 11164 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-01-31 16:06:04,768 INFO L231 Difference]: Finished difference. Result has 394 places, 500 transitions, 10119 flow [2024-01-31 16:06:04,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9650, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10119, PETRI_PLACES=394, PETRI_TRANSITIONS=500} [2024-01-31 16:06:04,769 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 317 predicate places. [2024-01-31 16:06:04,769 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 500 transitions, 10119 flow [2024-01-31 16:06:04,769 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) [2024-01-31 16:06:04,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:04,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:04,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-01-31 16:06:04,770 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:04,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:04,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1147552583, now seen corresponding path program 3 times [2024-01-31 16:06:04,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:04,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506037993] [2024-01-31 16:06:04,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:04,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:04,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:04,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:04,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:04,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506037993] [2024-01-31 16:06:04,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506037993] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:04,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:04,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:04,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809229897] [2024-01-31 16:06:04,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:04,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:06:04,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:04,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:06:04,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:06:04,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:06:04,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 500 transitions, 10119 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) [2024-01-31 16:06:04,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:04,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:06:04,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:05,914 INFO L124 PetriNetUnfolderBase]: 1796/3626 cut-off events. [2024-01-31 16:06:05,915 INFO L125 PetriNetUnfolderBase]: For 94330/94415 co-relation queries the response was YES. [2024-01-31 16:06:05,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24525 conditions, 3626 events. 1796/3626 cut-off events. For 94330/94415 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 27068 event pairs, 281 based on Foata normal form. 39/3578 useless extension candidates. Maximal degree in co-relation 24392. Up to 2148 conditions per place. [2024-01-31 16:06:05,960 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 336 selfloop transitions, 156 changer transitions 0/539 dead transitions. [2024-01-31 16:06:05,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 539 transitions, 11446 flow [2024-01-31 16:06:05,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:06:05,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:06:05,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 299 transitions. [2024-01-31 16:06:05,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5851272015655578 [2024-01-31 16:06:05,962 INFO L175 Difference]: Start difference. First operand has 394 places, 500 transitions, 10119 flow. Second operand 7 states and 299 transitions. [2024-01-31 16:06:05,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 539 transitions, 11446 flow [2024-01-31 16:06:06,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 539 transitions, 11068 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-01-31 16:06:06,372 INFO L231 Difference]: Finished difference. Result has 394 places, 503 transitions, 10196 flow [2024-01-31 16:06:06,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9745, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10196, PETRI_PLACES=394, PETRI_TRANSITIONS=503} [2024-01-31 16:06:06,373 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 317 predicate places. [2024-01-31 16:06:06,373 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 503 transitions, 10196 flow [2024-01-31 16:06:06,374 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) [2024-01-31 16:06:06,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:06,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:06,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-01-31 16:06:06,374 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:06,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:06,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1451521879, now seen corresponding path program 4 times [2024-01-31 16:06:06,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:06,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987917605] [2024-01-31 16:06:06,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:06,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:06,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:06,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:06,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:06,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987917605] [2024-01-31 16:06:06,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987917605] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:06,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:06,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:06,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310508115] [2024-01-31 16:06:06,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:06,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:06:06,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:06,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:06:06,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:06:06,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:06:06,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 503 transitions, 10196 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) [2024-01-31 16:06:06,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:06,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:06:06,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:07,477 INFO L124 PetriNetUnfolderBase]: 1792/3618 cut-off events. [2024-01-31 16:06:07,477 INFO L125 PetriNetUnfolderBase]: For 90034/90118 co-relation queries the response was YES. [2024-01-31 16:06:07,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24363 conditions, 3618 events. 1792/3618 cut-off events. For 90034/90118 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 26946 event pairs, 279 based on Foata normal form. 39/3570 useless extension candidates. Maximal degree in co-relation 24229. Up to 2152 conditions per place. [2024-01-31 16:06:07,522 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 328 selfloop transitions, 163 changer transitions 0/538 dead transitions. [2024-01-31 16:06:07,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 538 transitions, 11398 flow [2024-01-31 16:06:07,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:06:07,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:06:07,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 364 transitions. [2024-01-31 16:06:07,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5540334855403348 [2024-01-31 16:06:07,524 INFO L175 Difference]: Start difference. First operand has 394 places, 503 transitions, 10196 flow. Second operand 9 states and 364 transitions. [2024-01-31 16:06:07,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 538 transitions, 11398 flow [2024-01-31 16:06:07,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 538 transitions, 10845 flow, removed 3 selfloop flow, removed 24 redundant places. [2024-01-31 16:06:07,861 INFO L231 Difference]: Finished difference. Result has 377 places, 503 transitions, 9922 flow [2024-01-31 16:06:07,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9585, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9922, PETRI_PLACES=377, PETRI_TRANSITIONS=503} [2024-01-31 16:06:07,862 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 300 predicate places. [2024-01-31 16:06:07,862 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 503 transitions, 9922 flow [2024-01-31 16:06:07,862 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) [2024-01-31 16:06:07,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:07,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:07,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-01-31 16:06:07,862 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:07,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:07,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1839109195, now seen corresponding path program 3 times [2024-01-31 16:06:07,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:07,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244106961] [2024-01-31 16:06:07,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:07,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:07,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:08,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:08,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:08,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244106961] [2024-01-31 16:06:08,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244106961] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:08,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:08,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:06:08,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531367214] [2024-01-31 16:06:08,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:08,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:06:08,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:08,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:06:08,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:06:08,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:08,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 503 transitions, 9922 flow. Second operand has 9 states, 9 states have (on average 22.77777777777778) internal successors, (205), 9 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:08,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:08,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:08,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:09,057 INFO L124 PetriNetUnfolderBase]: 2307/4312 cut-off events. [2024-01-31 16:06:09,058 INFO L125 PetriNetUnfolderBase]: For 87550/87592 co-relation queries the response was YES. [2024-01-31 16:06:09,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27219 conditions, 4312 events. 2307/4312 cut-off events. For 87550/87592 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 30158 event pairs, 160 based on Foata normal form. 9/4269 useless extension candidates. Maximal degree in co-relation 27106. Up to 1438 conditions per place. [2024-01-31 16:06:09,278 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 356 selfloop transitions, 214 changer transitions 2/593 dead transitions. [2024-01-31 16:06:09,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 593 transitions, 11912 flow [2024-01-31 16:06:09,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:06:09,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:06:09,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 317 transitions. [2024-01-31 16:06:09,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824961948249619 [2024-01-31 16:06:09,280 INFO L175 Difference]: Start difference. First operand has 377 places, 503 transitions, 9922 flow. Second operand 9 states and 317 transitions. [2024-01-31 16:06:09,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 593 transitions, 11912 flow [2024-01-31 16:06:09,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 593 transitions, 11513 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-01-31 16:06:09,595 INFO L231 Difference]: Finished difference. Result has 381 places, 525 transitions, 10291 flow [2024-01-31 16:06:09,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9544, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10291, PETRI_PLACES=381, PETRI_TRANSITIONS=525} [2024-01-31 16:06:09,595 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 304 predicate places. [2024-01-31 16:06:09,596 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 525 transitions, 10291 flow [2024-01-31 16:06:09,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.77777777777778) internal successors, (205), 9 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:09,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:09,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:09,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-01-31 16:06:09,596 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:09,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:09,597 INFO L85 PathProgramCache]: Analyzing trace with hash -738967817, now seen corresponding path program 4 times [2024-01-31 16:06:09,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:09,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647970914] [2024-01-31 16:06:09,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:09,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:09,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:09,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:09,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:09,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647970914] [2024-01-31 16:06:09,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647970914] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:09,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:09,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:06:09,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667267058] [2024-01-31 16:06:09,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:09,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:06:09,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:09,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:06:09,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:06:09,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:09,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 525 transitions, 10291 flow. Second operand has 9 states, 9 states have (on average 22.77777777777778) internal successors, (205), 9 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:09,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:09,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:09,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:10,791 INFO L124 PetriNetUnfolderBase]: 2295/4292 cut-off events. [2024-01-31 16:06:10,792 INFO L125 PetriNetUnfolderBase]: For 94083/94137 co-relation queries the response was YES. [2024-01-31 16:06:10,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28449 conditions, 4292 events. 2295/4292 cut-off events. For 94083/94137 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 30031 event pairs, 160 based on Foata normal form. 9/4249 useless extension candidates. Maximal degree in co-relation 28334. Up to 1434 conditions per place. [2024-01-31 16:06:10,842 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 362 selfloop transitions, 211 changer transitions 2/596 dead transitions. [2024-01-31 16:06:10,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 596 transitions, 12141 flow [2024-01-31 16:06:10,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:06:10,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:06:10,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 322 transitions. [2024-01-31 16:06:10,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4901065449010654 [2024-01-31 16:06:10,843 INFO L175 Difference]: Start difference. First operand has 381 places, 525 transitions, 10291 flow. Second operand 9 states and 322 transitions. [2024-01-31 16:06:10,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 596 transitions, 12141 flow [2024-01-31 16:06:11,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 596 transitions, 11849 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-01-31 16:06:11,279 INFO L231 Difference]: Finished difference. Result has 384 places, 525 transitions, 10429 flow [2024-01-31 16:06:11,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9999, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10429, PETRI_PLACES=384, PETRI_TRANSITIONS=525} [2024-01-31 16:06:11,280 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 307 predicate places. [2024-01-31 16:06:11,280 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 525 transitions, 10429 flow [2024-01-31 16:06:11,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.77777777777778) internal successors, (205), 9 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:11,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:11,280 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] [2024-01-31 16:06:11,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-01-31 16:06:11,281 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:11,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:11,281 INFO L85 PathProgramCache]: Analyzing trace with hash 2107558711, now seen corresponding path program 5 times [2024-01-31 16:06:11,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:11,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961402846] [2024-01-31 16:06:11,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:11,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:11,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:11,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:11,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:11,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961402846] [2024-01-31 16:06:11,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961402846] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:11,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:11,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:06:11,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485014841] [2024-01-31 16:06:11,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:11,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:06:11,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:11,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:06:11,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:06:11,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:11,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 525 transitions, 10429 flow. Second operand has 9 states, 9 states have (on average 22.77777777777778) internal successors, (205), 9 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:11,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:11,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:11,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:12,684 INFO L124 PetriNetUnfolderBase]: 2473/4602 cut-off events. [2024-01-31 16:06:12,684 INFO L125 PetriNetUnfolderBase]: For 102317/102371 co-relation queries the response was YES. [2024-01-31 16:06:12,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30350 conditions, 4602 events. 2473/4602 cut-off events. For 102317/102371 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 32394 event pairs, 163 based on Foata normal form. 9/4559 useless extension candidates. Maximal degree in co-relation 30234. Up to 1500 conditions per place. [2024-01-31 16:06:12,909 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 331 selfloop transitions, 251 changer transitions 2/605 dead transitions. [2024-01-31 16:06:12,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 605 transitions, 12459 flow [2024-01-31 16:06:12,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:06:12,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:06:12,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 317 transitions. [2024-01-31 16:06:12,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824961948249619 [2024-01-31 16:06:12,911 INFO L175 Difference]: Start difference. First operand has 384 places, 525 transitions, 10429 flow. Second operand 9 states and 317 transitions. [2024-01-31 16:06:12,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 605 transitions, 12459 flow [2024-01-31 16:06:13,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 605 transitions, 12099 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-01-31 16:06:13,269 INFO L231 Difference]: Finished difference. Result has 387 places, 544 transitions, 10959 flow [2024-01-31 16:06:13,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10093, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=232, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10959, PETRI_PLACES=387, PETRI_TRANSITIONS=544} [2024-01-31 16:06:13,270 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 310 predicate places. [2024-01-31 16:06:13,270 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 544 transitions, 10959 flow [2024-01-31 16:06:13,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.77777777777778) internal successors, (205), 9 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:13,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:13,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:13,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-01-31 16:06:13,272 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:13,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:13,272 INFO L85 PathProgramCache]: Analyzing trace with hash -439332579, now seen corresponding path program 6 times [2024-01-31 16:06:13,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:13,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45507800] [2024-01-31 16:06:13,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:13,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:13,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:13,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:13,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:13,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45507800] [2024-01-31 16:06:13,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45507800] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:13,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:13,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:06:13,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363887481] [2024-01-31 16:06:13,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:13,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:06:13,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:13,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:06:13,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:06:13,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:13,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 544 transitions, 10959 flow. Second operand has 9 states, 9 states have (on average 22.77777777777778) internal successors, (205), 9 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:13,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:13,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:13,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:14,598 INFO L124 PetriNetUnfolderBase]: 2581/4782 cut-off events. [2024-01-31 16:06:14,599 INFO L125 PetriNetUnfolderBase]: For 111082/111136 co-relation queries the response was YES. [2024-01-31 16:06:14,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32070 conditions, 4782 events. 2581/4782 cut-off events. For 111082/111136 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 33692 event pairs, 209 based on Foata normal form. 9/4739 useless extension candidates. Maximal degree in co-relation 31952. Up to 1536 conditions per place. [2024-01-31 16:06:14,657 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 321 selfloop transitions, 269 changer transitions 2/613 dead transitions. [2024-01-31 16:06:14,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 613 transitions, 12781 flow [2024-01-31 16:06:14,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:06:14,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:06:14,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 314 transitions. [2024-01-31 16:06:14,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4779299847792998 [2024-01-31 16:06:14,658 INFO L175 Difference]: Start difference. First operand has 387 places, 544 transitions, 10959 flow. Second operand 9 states and 314 transitions. [2024-01-31 16:06:14,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 613 transitions, 12781 flow [2024-01-31 16:06:15,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 613 transitions, 12434 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-01-31 16:06:15,112 INFO L231 Difference]: Finished difference. Result has 392 places, 555 transitions, 11389 flow [2024-01-31 16:06:15,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10619, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11389, PETRI_PLACES=392, PETRI_TRANSITIONS=555} [2024-01-31 16:06:15,113 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 315 predicate places. [2024-01-31 16:06:15,113 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 555 transitions, 11389 flow [2024-01-31 16:06:15,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.77777777777778) internal successors, (205), 9 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:15,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:15,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:15,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-01-31 16:06:15,114 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:15,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:15,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1027125709, now seen corresponding path program 1 times [2024-01-31 16:06:15,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:15,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178362082] [2024-01-31 16:06:15,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:15,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:15,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:15,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:15,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:15,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178362082] [2024-01-31 16:06:15,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178362082] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:15,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:15,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:06:15,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310864779] [2024-01-31 16:06:15,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:15,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:06:15,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:15,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:06:15,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:06:15,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:15,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 555 transitions, 11389 flow. Second operand has 9 states, 9 states have (on average 22.77777777777778) internal successors, (205), 9 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:15,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:15,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:15,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:16,807 INFO L124 PetriNetUnfolderBase]: 3056/5641 cut-off events. [2024-01-31 16:06:16,808 INFO L125 PetriNetUnfolderBase]: For 145873/146092 co-relation queries the response was YES. [2024-01-31 16:06:16,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39144 conditions, 5641 events. 3056/5641 cut-off events. For 145873/146092 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 40128 event pairs, 437 based on Foata normal form. 70/5541 useless extension candidates. Maximal degree in co-relation 39024. Up to 2354 conditions per place. [2024-01-31 16:06:16,871 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 354 selfloop transitions, 213 changer transitions 2/609 dead transitions. [2024-01-31 16:06:16,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 609 transitions, 12936 flow [2024-01-31 16:06:16,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:06:16,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:06:16,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 297 transitions. [2024-01-31 16:06:16,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520547945205479 [2024-01-31 16:06:16,872 INFO L175 Difference]: Start difference. First operand has 392 places, 555 transitions, 11389 flow. Second operand 9 states and 297 transitions. [2024-01-31 16:06:16,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 609 transitions, 12936 flow [2024-01-31 16:06:17,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 609 transitions, 12379 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-01-31 16:06:17,434 INFO L231 Difference]: Finished difference. Result has 393 places, 555 transitions, 11291 flow [2024-01-31 16:06:17,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10850, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11291, PETRI_PLACES=393, PETRI_TRANSITIONS=555} [2024-01-31 16:06:17,435 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 316 predicate places. [2024-01-31 16:06:17,435 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 555 transitions, 11291 flow [2024-01-31 16:06:17,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.77777777777778) internal successors, (205), 9 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:17,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:17,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:17,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-01-31 16:06:17,437 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:17,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:17,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1483693307, now seen corresponding path program 7 times [2024-01-31 16:06:17,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:17,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575618526] [2024-01-31 16:06:17,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:17,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:17,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:17,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:17,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:17,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575618526] [2024-01-31 16:06:17,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575618526] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:17,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:17,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:06:17,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706297223] [2024-01-31 16:06:17,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:17,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:06:17,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:17,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:06:17,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:06:17,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:17,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 555 transitions, 11291 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) [2024-01-31 16:06:17,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:17,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:17,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:18,850 INFO L124 PetriNetUnfolderBase]: 2545/4750 cut-off events. [2024-01-31 16:06:18,850 INFO L125 PetriNetUnfolderBase]: For 114057/114111 co-relation queries the response was YES. [2024-01-31 16:06:18,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32514 conditions, 4750 events. 2545/4750 cut-off events. For 114057/114111 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 33729 event pairs, 486 based on Foata normal form. 17/4715 useless extension candidates. Maximal degree in co-relation 32394. Up to 3107 conditions per place. [2024-01-31 16:06:18,914 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 438 selfloop transitions, 175 changer transitions 0/634 dead transitions. [2024-01-31 16:06:18,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 634 transitions, 13287 flow [2024-01-31 16:06:18,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:06:18,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:06:18,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 342 transitions. [2024-01-31 16:06:18,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4684931506849315 [2024-01-31 16:06:18,915 INFO L175 Difference]: Start difference. First operand has 393 places, 555 transitions, 11291 flow. Second operand 10 states and 342 transitions. [2024-01-31 16:06:18,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 634 transitions, 13287 flow [2024-01-31 16:06:19,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 634 transitions, 12861 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-31 16:06:19,370 INFO L231 Difference]: Finished difference. Result has 395 places, 555 transitions, 11227 flow [2024-01-31 16:06:19,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10865, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11227, PETRI_PLACES=395, PETRI_TRANSITIONS=555} [2024-01-31 16:06:19,371 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 318 predicate places. [2024-01-31 16:06:19,371 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 555 transitions, 11227 flow [2024-01-31 16:06:19,371 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) [2024-01-31 16:06:19,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:19,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:19,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-01-31 16:06:19,371 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:19,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:19,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1225022063, now seen corresponding path program 8 times [2024-01-31 16:06:19,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:19,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697645677] [2024-01-31 16:06:19,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:19,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:19,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:19,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:19,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:19,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697645677] [2024-01-31 16:06:19,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697645677] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:19,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:19,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:06:19,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418717603] [2024-01-31 16:06:19,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:19,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:06:19,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:19,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:06:19,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:06:19,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:19,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 555 transitions, 11227 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) [2024-01-31 16:06:19,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:19,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:19,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:20,823 INFO L124 PetriNetUnfolderBase]: 2521/4710 cut-off events. [2024-01-31 16:06:20,823 INFO L125 PetriNetUnfolderBase]: For 110169/110223 co-relation queries the response was YES. [2024-01-31 16:06:20,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31929 conditions, 4710 events. 2521/4710 cut-off events. For 110169/110223 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 33520 event pairs, 490 based on Foata normal form. 17/4675 useless extension candidates. Maximal degree in co-relation 31808. Up to 3099 conditions per place. [2024-01-31 16:06:20,883 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 426 selfloop transitions, 179 changer transitions 0/626 dead transitions. [2024-01-31 16:06:20,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 626 transitions, 13088 flow [2024-01-31 16:06:20,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:06:20,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:06:20,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 340 transitions. [2024-01-31 16:06:20,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4657534246575342 [2024-01-31 16:06:20,885 INFO L175 Difference]: Start difference. First operand has 395 places, 555 transitions, 11227 flow. Second operand 10 states and 340 transitions. [2024-01-31 16:06:20,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 626 transitions, 13088 flow [2024-01-31 16:06:21,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 626 transitions, 12738 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-01-31 16:06:21,393 INFO L231 Difference]: Finished difference. Result has 396 places, 555 transitions, 11245 flow [2024-01-31 16:06:21,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10877, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11245, PETRI_PLACES=396, PETRI_TRANSITIONS=555} [2024-01-31 16:06:21,394 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 319 predicate places. [2024-01-31 16:06:21,394 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 555 transitions, 11245 flow [2024-01-31 16:06:21,394 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) [2024-01-31 16:06:21,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:21,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:21,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-01-31 16:06:21,395 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:21,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:21,403 INFO L85 PathProgramCache]: Analyzing trace with hash -926213513, now seen corresponding path program 2 times [2024-01-31 16:06:21,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:21,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336868443] [2024-01-31 16:06:21,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:21,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:21,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:21,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:21,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:21,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336868443] [2024-01-31 16:06:21,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336868443] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:21,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:21,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:06:21,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078226348] [2024-01-31 16:06:21,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:21,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:06:21,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:21,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:06:21,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:06:21,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:21,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 555 transitions, 11245 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) [2024-01-31 16:06:21,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:21,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:21,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:23,150 INFO L124 PetriNetUnfolderBase]: 2988/5518 cut-off events. [2024-01-31 16:06:23,150 INFO L125 PetriNetUnfolderBase]: For 135988/136270 co-relation queries the response was YES. [2024-01-31 16:06:23,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37641 conditions, 5518 events. 2988/5518 cut-off events. For 135988/136270 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 39400 event pairs, 538 based on Foata normal form. 92/5435 useless extension candidates. Maximal degree in co-relation 37519. Up to 3418 conditions per place. [2024-01-31 16:06:23,233 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 408 selfloop transitions, 168 changer transitions 0/616 dead transitions. [2024-01-31 16:06:23,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 616 transitions, 12840 flow [2024-01-31 16:06:23,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:06:23,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:06:23,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 322 transitions. [2024-01-31 16:06:23,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4410958904109589 [2024-01-31 16:06:23,234 INFO L175 Difference]: Start difference. First operand has 396 places, 555 transitions, 11245 flow. Second operand 10 states and 322 transitions. [2024-01-31 16:06:23,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 616 transitions, 12840 flow [2024-01-31 16:06:23,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 616 transitions, 12534 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-31 16:06:23,829 INFO L231 Difference]: Finished difference. Result has 398 places, 555 transitions, 11287 flow [2024-01-31 16:06:23,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10939, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11287, PETRI_PLACES=398, PETRI_TRANSITIONS=555} [2024-01-31 16:06:23,830 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 321 predicate places. [2024-01-31 16:06:23,830 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 555 transitions, 11287 flow [2024-01-31 16:06:23,830 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) [2024-01-31 16:06:23,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:23,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:23,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-01-31 16:06:23,831 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:23,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:23,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1152858191, now seen corresponding path program 3 times [2024-01-31 16:06:23,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:23,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054004656] [2024-01-31 16:06:23,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:23,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:23,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:24,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:24,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:24,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054004656] [2024-01-31 16:06:24,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054004656] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:24,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:24,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:06:24,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507305066] [2024-01-31 16:06:24,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:24,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:06:24,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:24,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:06:24,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:06:24,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:24,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 555 transitions, 11287 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) [2024-01-31 16:06:24,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:24,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:24,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:25,496 INFO L124 PetriNetUnfolderBase]: 2978/5493 cut-off events. [2024-01-31 16:06:25,497 INFO L125 PetriNetUnfolderBase]: For 137869/138165 co-relation queries the response was YES. [2024-01-31 16:06:25,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37597 conditions, 5493 events. 2978/5493 cut-off events. For 137869/138165 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 39195 event pairs, 522 based on Foata normal form. 96/5413 useless extension candidates. Maximal degree in co-relation 37474. Up to 3414 conditions per place. [2024-01-31 16:06:25,582 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 410 selfloop transitions, 172 changer transitions 0/622 dead transitions. [2024-01-31 16:06:25,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 622 transitions, 12916 flow [2024-01-31 16:06:25,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 16:06:25,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 16:06:25,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 375 transitions. [2024-01-31 16:06:25,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4280821917808219 [2024-01-31 16:06:25,584 INFO L175 Difference]: Start difference. First operand has 398 places, 555 transitions, 11287 flow. Second operand 12 states and 375 transitions. [2024-01-31 16:06:25,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 622 transitions, 12916 flow [2024-01-31 16:06:26,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 622 transitions, 12580 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-01-31 16:06:26,149 INFO L231 Difference]: Finished difference. Result has 401 places, 555 transitions, 11313 flow [2024-01-31 16:06:26,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10951, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11313, PETRI_PLACES=401, PETRI_TRANSITIONS=555} [2024-01-31 16:06:26,149 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 324 predicate places. [2024-01-31 16:06:26,149 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 555 transitions, 11313 flow [2024-01-31 16:06:26,150 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) [2024-01-31 16:06:26,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:26,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:26,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-01-31 16:06:26,150 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:26,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:26,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1151937491, now seen corresponding path program 4 times [2024-01-31 16:06:26,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:26,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465030922] [2024-01-31 16:06:26,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:26,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:26,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:26,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:26,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:26,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465030922] [2024-01-31 16:06:26,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465030922] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:26,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:26,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:06:26,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547137095] [2024-01-31 16:06:26,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:26,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:06:26,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:26,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:06:26,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:06:26,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:26,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 555 transitions, 11313 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) [2024-01-31 16:06:26,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:26,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:26,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:27,819 INFO L124 PetriNetUnfolderBase]: 2963/5464 cut-off events. [2024-01-31 16:06:27,819 INFO L125 PetriNetUnfolderBase]: For 138593/138885 co-relation queries the response was YES. [2024-01-31 16:06:27,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37511 conditions, 5464 events. 2963/5464 cut-off events. For 138593/138885 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 38947 event pairs, 518 based on Foata normal form. 96/5380 useless extension candidates. Maximal degree in co-relation 37387. Up to 3408 conditions per place. [2024-01-31 16:06:27,876 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 402 selfloop transitions, 175 changer transitions 0/617 dead transitions. [2024-01-31 16:06:27,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 617 transitions, 12832 flow [2024-01-31 16:06:27,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-01-31 16:06:27,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-01-31 16:06:27,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 396 transitions. [2024-01-31 16:06:27,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4172813487881981 [2024-01-31 16:06:27,878 INFO L175 Difference]: Start difference. First operand has 401 places, 555 transitions, 11313 flow. Second operand 13 states and 396 transitions. [2024-01-31 16:06:27,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 617 transitions, 12832 flow [2024-01-31 16:06:28,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 617 transitions, 12484 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-01-31 16:06:28,386 INFO L231 Difference]: Finished difference. Result has 403 places, 555 transitions, 11325 flow [2024-01-31 16:06:28,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10965, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=11325, PETRI_PLACES=403, PETRI_TRANSITIONS=555} [2024-01-31 16:06:28,386 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 326 predicate places. [2024-01-31 16:06:28,386 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 555 transitions, 11325 flow [2024-01-31 16:06:28,386 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) [2024-01-31 16:06:28,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:28,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:28,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-01-31 16:06:28,387 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:28,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:28,387 INFO L85 PathProgramCache]: Analyzing trace with hash 515570913, now seen corresponding path program 9 times [2024-01-31 16:06:28,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:28,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310215298] [2024-01-31 16:06:28,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:28,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:28,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:28,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:28,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:28,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310215298] [2024-01-31 16:06:28,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310215298] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:28,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:28,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:06:28,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914616152] [2024-01-31 16:06:28,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:28,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:06:28,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:28,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:06:28,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:06:28,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:28,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 555 transitions, 11325 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) [2024-01-31 16:06:28,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:28,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:28,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:29,786 INFO L124 PetriNetUnfolderBase]: 2457/4595 cut-off events. [2024-01-31 16:06:29,786 INFO L125 PetriNetUnfolderBase]: For 111691/111745 co-relation queries the response was YES. [2024-01-31 16:06:29,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31498 conditions, 4595 events. 2457/4595 cut-off events. For 111691/111745 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 32624 event pairs, 423 based on Foata normal form. 17/4559 useless extension candidates. Maximal degree in co-relation 31373. Up to 1651 conditions per place. [2024-01-31 16:06:29,854 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 408 selfloop transitions, 213 changer transitions 0/642 dead transitions. [2024-01-31 16:06:29,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 642 transitions, 13503 flow [2024-01-31 16:06:29,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:06:29,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:06:29,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 361 transitions. [2024-01-31 16:06:29,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44956413449564137 [2024-01-31 16:06:29,855 INFO L175 Difference]: Start difference. First operand has 403 places, 555 transitions, 11325 flow. Second operand 11 states and 361 transitions. [2024-01-31 16:06:29,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 642 transitions, 13503 flow [2024-01-31 16:06:30,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 642 transitions, 13153 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-01-31 16:06:30,330 INFO L231 Difference]: Finished difference. Result has 402 places, 555 transitions, 11415 flow [2024-01-31 16:06:30,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10975, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11415, PETRI_PLACES=402, PETRI_TRANSITIONS=555} [2024-01-31 16:06:30,331 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 325 predicate places. [2024-01-31 16:06:30,331 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 555 transitions, 11415 flow [2024-01-31 16:06:30,331 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) [2024-01-31 16:06:30,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:30,331 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] [2024-01-31 16:06:30,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-01-31 16:06:30,332 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:30,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:30,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1858065641, now seen corresponding path program 10 times [2024-01-31 16:06:30,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:30,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938949253] [2024-01-31 16:06:30,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:30,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:30,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:30,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:30,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:30,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938949253] [2024-01-31 16:06:30,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938949253] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:30,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:30,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:06:30,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750406872] [2024-01-31 16:06:30,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:30,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:06:30,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:30,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:06:30,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:06:30,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:30,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 555 transitions, 11415 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) [2024-01-31 16:06:30,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:30,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:30,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:31,732 INFO L124 PetriNetUnfolderBase]: 2433/4555 cut-off events. [2024-01-31 16:06:31,732 INFO L125 PetriNetUnfolderBase]: For 112420/112474 co-relation queries the response was YES. [2024-01-31 16:06:31,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31478 conditions, 4555 events. 2433/4555 cut-off events. For 112420/112474 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 32282 event pairs, 431 based on Foata normal form. 17/4519 useless extension candidates. Maximal degree in co-relation 31352. Up to 1643 conditions per place. [2024-01-31 16:06:31,788 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 376 selfloop transitions, 237 changer transitions 0/634 dead transitions. [2024-01-31 16:06:31,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 634 transitions, 13454 flow [2024-01-31 16:06:31,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:06:31,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:06:31,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 359 transitions. [2024-01-31 16:06:31,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44707347447073476 [2024-01-31 16:06:31,789 INFO L175 Difference]: Start difference. First operand has 402 places, 555 transitions, 11415 flow. Second operand 11 states and 359 transitions. [2024-01-31 16:06:31,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 634 transitions, 13454 flow [2024-01-31 16:06:32,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 634 transitions, 12993 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-01-31 16:06:32,215 INFO L231 Difference]: Finished difference. Result has 403 places, 555 transitions, 11438 flow [2024-01-31 16:06:32,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10954, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=237, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11438, PETRI_PLACES=403, PETRI_TRANSITIONS=555} [2024-01-31 16:06:32,215 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 326 predicate places. [2024-01-31 16:06:32,215 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 555 transitions, 11438 flow [2024-01-31 16:06:32,216 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) [2024-01-31 16:06:32,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:32,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:32,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-01-31 16:06:32,216 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:32,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:32,216 INFO L85 PathProgramCache]: Analyzing trace with hash 507480577, now seen corresponding path program 5 times [2024-01-31 16:06:32,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:32,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716080617] [2024-01-31 16:06:32,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:32,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:32,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:32,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:32,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:32,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716080617] [2024-01-31 16:06:32,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716080617] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:32,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:32,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:06:32,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912857082] [2024-01-31 16:06:32,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:32,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:06:32,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:32,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:06:32,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:06:32,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:32,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 555 transitions, 11438 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) [2024-01-31 16:06:32,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:32,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:32,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:33,987 INFO L124 PetriNetUnfolderBase]: 3448/6360 cut-off events. [2024-01-31 16:06:33,987 INFO L125 PetriNetUnfolderBase]: For 160491/160802 co-relation queries the response was YES. [2024-01-31 16:06:34,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42875 conditions, 6360 events. 3448/6360 cut-off events. For 160491/160802 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 46540 event pairs, 639 based on Foata normal form. 100/6269 useless extension candidates. Maximal degree in co-relation 42748. Up to 3203 conditions per place. [2024-01-31 16:06:34,066 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 449 selfloop transitions, 202 changer transitions 0/691 dead transitions. [2024-01-31 16:06:34,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 691 transitions, 14399 flow [2024-01-31 16:06:34,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:06:34,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:06:34,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 356 transitions. [2024-01-31 16:06:34,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44333748443337484 [2024-01-31 16:06:34,067 INFO L175 Difference]: Start difference. First operand has 403 places, 555 transitions, 11438 flow. Second operand 11 states and 356 transitions. [2024-01-31 16:06:34,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 691 transitions, 14399 flow [2024-01-31 16:06:34,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 691 transitions, 13735 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-01-31 16:06:34,741 INFO L231 Difference]: Finished difference. Result has 406 places, 602 transitions, 12168 flow [2024-01-31 16:06:34,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10876, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12168, PETRI_PLACES=406, PETRI_TRANSITIONS=602} [2024-01-31 16:06:34,742 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 329 predicate places. [2024-01-31 16:06:34,742 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 602 transitions, 12168 flow [2024-01-31 16:06:34,742 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) [2024-01-31 16:06:34,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:34,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:34,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-01-31 16:06:34,743 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:34,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:34,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1097579979, now seen corresponding path program 6 times [2024-01-31 16:06:34,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:34,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553870899] [2024-01-31 16:06:34,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:34,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:34,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:34,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:34,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:34,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553870899] [2024-01-31 16:06:34,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553870899] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:34,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:34,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:06:34,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026123596] [2024-01-31 16:06:34,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:34,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:06:34,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:34,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:06:34,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:06:35,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:35,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 602 transitions, 12168 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) [2024-01-31 16:06:35,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:35,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:35,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:36,446 INFO L124 PetriNetUnfolderBase]: 3437/6339 cut-off events. [2024-01-31 16:06:36,447 INFO L125 PetriNetUnfolderBase]: For 158369/158693 co-relation queries the response was YES. [2024-01-31 16:06:36,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42848 conditions, 6339 events. 3437/6339 cut-off events. For 158369/158693 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 46333 event pairs, 615 based on Foata normal form. 108/6260 useless extension candidates. Maximal degree in co-relation 42718. Up to 3200 conditions per place. [2024-01-31 16:06:36,537 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 467 selfloop transitions, 206 changer transitions 0/713 dead transitions. [2024-01-31 16:06:36,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 713 transitions, 14585 flow [2024-01-31 16:06:36,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-01-31 16:06:36,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-01-31 16:06:36,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 417 transitions. [2024-01-31 16:06:36,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43940990516332984 [2024-01-31 16:06:36,539 INFO L175 Difference]: Start difference. First operand has 406 places, 602 transitions, 12168 flow. Second operand 13 states and 417 transitions. [2024-01-31 16:06:36,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 713 transitions, 14585 flow [2024-01-31 16:06:37,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 713 transitions, 14304 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-01-31 16:06:37,394 INFO L231 Difference]: Finished difference. Result has 413 places, 604 transitions, 12374 flow [2024-01-31 16:06:37,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11887, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12374, PETRI_PLACES=413, PETRI_TRANSITIONS=604} [2024-01-31 16:06:37,408 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 336 predicate places. [2024-01-31 16:06:37,408 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 604 transitions, 12374 flow [2024-01-31 16:06:37,408 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) [2024-01-31 16:06:37,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:37,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:37,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-01-31 16:06:37,409 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:37,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:37,414 INFO L85 PathProgramCache]: Analyzing trace with hash 138387437, now seen corresponding path program 7 times [2024-01-31 16:06:37,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:37,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196763118] [2024-01-31 16:06:37,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:37,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:37,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:37,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:37,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:37,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196763118] [2024-01-31 16:06:37,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196763118] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:37,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:37,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:06:37,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557755429] [2024-01-31 16:06:37,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:37,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:06:37,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:37,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:06:37,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:06:37,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:37,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 604 transitions, 12374 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) [2024-01-31 16:06:37,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:37,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:37,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:39,309 INFO L124 PetriNetUnfolderBase]: 3423/6309 cut-off events. [2024-01-31 16:06:39,309 INFO L125 PetriNetUnfolderBase]: For 165134/165468 co-relation queries the response was YES. [2024-01-31 16:06:39,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42939 conditions, 6309 events. 3423/6309 cut-off events. For 165134/165468 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 46128 event pairs, 611 based on Foata normal form. 112/6232 useless extension candidates. Maximal degree in co-relation 42808. Up to 3194 conditions per place. [2024-01-31 16:06:39,386 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 459 selfloop transitions, 209 changer transitions 0/708 dead transitions. [2024-01-31 16:06:39,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 708 transitions, 14632 flow [2024-01-31 16:06:39,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-01-31 16:06:39,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-01-31 16:06:39,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 438 transitions. [2024-01-31 16:06:39,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-01-31 16:06:39,387 INFO L175 Difference]: Start difference. First operand has 413 places, 604 transitions, 12374 flow. Second operand 14 states and 438 transitions. [2024-01-31 16:06:39,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 708 transitions, 14632 flow [2024-01-31 16:06:40,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 708 transitions, 14170 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-01-31 16:06:40,059 INFO L231 Difference]: Finished difference. Result has 416 places, 604 transitions, 12340 flow [2024-01-31 16:06:40,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11912, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=12340, PETRI_PLACES=416, PETRI_TRANSITIONS=604} [2024-01-31 16:06:40,060 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 339 predicate places. [2024-01-31 16:06:40,060 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 604 transitions, 12340 flow [2024-01-31 16:06:40,060 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) [2024-01-31 16:06:40,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:40,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:40,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-01-31 16:06:40,061 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:40,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:40,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1645048373, now seen corresponding path program 8 times [2024-01-31 16:06:40,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:40,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977195227] [2024-01-31 16:06:40,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:40,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:40,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:40,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:40,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:40,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977195227] [2024-01-31 16:06:40,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977195227] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:40,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:40,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:06:40,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726076314] [2024-01-31 16:06:40,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:40,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:06:40,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:40,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:06:40,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:06:40,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:40,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 604 transitions, 12340 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) [2024-01-31 16:06:40,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:40,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:40,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:42,030 INFO L124 PetriNetUnfolderBase]: 3404/6285 cut-off events. [2024-01-31 16:06:42,030 INFO L125 PetriNetUnfolderBase]: For 161798/162097 co-relation queries the response was YES. [2024-01-31 16:06:42,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42898 conditions, 6285 events. 3404/6285 cut-off events. For 161798/162097 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 46024 event pairs, 720 based on Foata normal form. 90/6170 useless extension candidates. Maximal degree in co-relation 42766. Up to 4959 conditions per place. [2024-01-31 16:06:42,091 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 528 selfloop transitions, 91 changer transitions 0/659 dead transitions. [2024-01-31 16:06:42,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 659 transitions, 14130 flow [2024-01-31 16:06:42,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:06:42,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:06:42,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 311 transitions. [2024-01-31 16:06:42,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.426027397260274 [2024-01-31 16:06:42,092 INFO L175 Difference]: Start difference. First operand has 416 places, 604 transitions, 12340 flow. Second operand 10 states and 311 transitions. [2024-01-31 16:06:42,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 659 transitions, 14130 flow [2024-01-31 16:06:42,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 659 transitions, 13795 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-31 16:06:42,769 INFO L231 Difference]: Finished difference. Result has 419 places, 608 transitions, 12322 flow [2024-01-31 16:06:42,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12005, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12322, PETRI_PLACES=419, PETRI_TRANSITIONS=608} [2024-01-31 16:06:42,770 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 342 predicate places. [2024-01-31 16:06:42,770 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 608 transitions, 12322 flow [2024-01-31 16:06:42,770 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) [2024-01-31 16:06:42,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:42,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:42,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-01-31 16:06:42,770 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:42,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:42,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1645969073, now seen corresponding path program 9 times [2024-01-31 16:06:42,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:42,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796273029] [2024-01-31 16:06:42,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:42,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:42,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:43,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:43,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:43,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796273029] [2024-01-31 16:06:43,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796273029] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:43,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:43,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:06:43,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610549721] [2024-01-31 16:06:43,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:43,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:06:43,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:43,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:06:43,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:06:43,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:43,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 608 transitions, 12322 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) [2024-01-31 16:06:43,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:43,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:43,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:44,625 INFO L124 PetriNetUnfolderBase]: 3388/6257 cut-off events. [2024-01-31 16:06:44,625 INFO L125 PetriNetUnfolderBase]: For 160836/161137 co-relation queries the response was YES. [2024-01-31 16:06:44,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42440 conditions, 6257 events. 3388/6257 cut-off events. For 160836/161137 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 45720 event pairs, 716 based on Foata normal form. 94/6146 useless extension candidates. Maximal degree in co-relation 42306. Up to 4953 conditions per place. [2024-01-31 16:06:44,715 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 536 selfloop transitions, 87 changer transitions 0/663 dead transitions. [2024-01-31 16:06:44,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 663 transitions, 14055 flow [2024-01-31 16:06:44,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:06:44,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:06:44,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 316 transitions. [2024-01-31 16:06:44,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4328767123287671 [2024-01-31 16:06:44,717 INFO L175 Difference]: Start difference. First operand has 419 places, 608 transitions, 12322 flow. Second operand 10 states and 316 transitions. [2024-01-31 16:06:44,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 663 transitions, 14055 flow [2024-01-31 16:06:45,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 663 transitions, 13904 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-01-31 16:06:45,453 INFO L231 Difference]: Finished difference. Result has 423 places, 608 transitions, 12356 flow [2024-01-31 16:06:45,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12171, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12356, PETRI_PLACES=423, PETRI_TRANSITIONS=608} [2024-01-31 16:06:45,453 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 346 predicate places. [2024-01-31 16:06:45,454 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 608 transitions, 12356 flow [2024-01-31 16:06:45,454 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) [2024-01-31 16:06:45,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:45,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:45,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-01-31 16:06:45,454 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:45,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:45,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1857578209, now seen corresponding path program 11 times [2024-01-31 16:06:45,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:45,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118646392] [2024-01-31 16:06:45,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:45,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:45,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:45,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:45,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118646392] [2024-01-31 16:06:45,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118646392] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:45,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:45,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:06:45,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053897812] [2024-01-31 16:06:45,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:45,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:06:45,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:45,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:06:45,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:06:45,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:45,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 608 transitions, 12356 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) [2024-01-31 16:06:45,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:45,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:45,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:47,187 INFO L124 PetriNetUnfolderBase]: 2817/5262 cut-off events. [2024-01-31 16:06:47,187 INFO L125 PetriNetUnfolderBase]: For 128511/128565 co-relation queries the response was YES. [2024-01-31 16:06:47,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35070 conditions, 5262 events. 2817/5262 cut-off events. For 128511/128565 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 38234 event pairs, 536 based on Foata normal form. 57/5267 useless extension candidates. Maximal degree in co-relation 34935. Up to 3736 conditions per place. [2024-01-31 16:06:47,258 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 491 selfloop transitions, 148 changer transitions 0/660 dead transitions. [2024-01-31 16:06:47,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 660 transitions, 14168 flow [2024-01-31 16:06:47,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:06:47,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:06:47,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 310 transitions. [2024-01-31 16:06:47,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4246575342465753 [2024-01-31 16:06:47,260 INFO L175 Difference]: Start difference. First operand has 423 places, 608 transitions, 12356 flow. Second operand 10 states and 310 transitions. [2024-01-31 16:06:47,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 660 transitions, 14168 flow [2024-01-31 16:06:47,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 660 transitions, 14039 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-31 16:06:47,856 INFO L231 Difference]: Finished difference. Result has 427 places, 608 transitions, 12569 flow [2024-01-31 16:06:47,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12227, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12569, PETRI_PLACES=427, PETRI_TRANSITIONS=608} [2024-01-31 16:06:47,857 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 350 predicate places. [2024-01-31 16:06:47,857 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 608 transitions, 12569 flow [2024-01-31 16:06:47,857 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) [2024-01-31 16:06:47,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:47,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:47,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-01-31 16:06:47,857 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:47,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:47,858 INFO L85 PathProgramCache]: Analyzing trace with hash 300510759, now seen corresponding path program 10 times [2024-01-31 16:06:47,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:47,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688245275] [2024-01-31 16:06:47,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:47,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:47,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:48,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:48,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:48,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688245275] [2024-01-31 16:06:48,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688245275] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:48,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:48,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:06:48,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854503503] [2024-01-31 16:06:48,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:48,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:06:48,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:48,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:06:48,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:06:48,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:48,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 608 transitions, 12569 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) [2024-01-31 16:06:48,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:48,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:48,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:49,638 INFO L124 PetriNetUnfolderBase]: 3284/6084 cut-off events. [2024-01-31 16:06:49,639 INFO L125 PetriNetUnfolderBase]: For 155102/155396 co-relation queries the response was YES. [2024-01-31 16:06:49,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41158 conditions, 6084 events. 3284/6084 cut-off events. For 155102/155396 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 44471 event pairs, 689 based on Foata normal form. 94/5979 useless extension candidates. Maximal degree in co-relation 41022. Up to 4860 conditions per place. [2024-01-31 16:06:49,714 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 536 selfloop transitions, 86 changer transitions 0/662 dead transitions. [2024-01-31 16:06:49,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 662 transitions, 14164 flow [2024-01-31 16:06:49,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 16:06:49,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 16:06:49,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 361 transitions. [2024-01-31 16:06:49,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121004566210046 [2024-01-31 16:06:49,716 INFO L175 Difference]: Start difference. First operand has 427 places, 608 transitions, 12569 flow. Second operand 12 states and 361 transitions. [2024-01-31 16:06:49,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 662 transitions, 14164 flow [2024-01-31 16:06:50,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 662 transitions, 13526 flow, removed 15 selfloop flow, removed 14 redundant places. [2024-01-31 16:06:50,379 INFO L231 Difference]: Finished difference. Result has 425 places, 608 transitions, 12114 flow [2024-01-31 16:06:50,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11931, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12114, PETRI_PLACES=425, PETRI_TRANSITIONS=608} [2024-01-31 16:06:50,380 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 348 predicate places. [2024-01-31 16:06:50,380 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 608 transitions, 12114 flow [2024-01-31 16:06:50,380 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) [2024-01-31 16:06:50,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:50,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:50,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-01-31 16:06:50,381 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:50,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:50,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1922008381, now seen corresponding path program 7 times [2024-01-31 16:06:50,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:50,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550639285] [2024-01-31 16:06:50,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:50,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:50,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:50,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:50,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:50,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550639285] [2024-01-31 16:06:50,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550639285] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:50,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:50,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:06:50,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793231495] [2024-01-31 16:06:50,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:50,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:06:50,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:50,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:06:50,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:06:50,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:50,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 608 transitions, 12114 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) [2024-01-31 16:06:50,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:50,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:50,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:52,267 INFO L124 PetriNetUnfolderBase]: 3293/6093 cut-off events. [2024-01-31 16:06:52,268 INFO L125 PetriNetUnfolderBase]: For 141697/141992 co-relation queries the response was YES. [2024-01-31 16:06:52,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40373 conditions, 6093 events. 3293/6093 cut-off events. For 141697/141992 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 44451 event pairs, 714 based on Foata normal form. 83/5967 useless extension candidates. Maximal degree in co-relation 40240. Up to 5023 conditions per place. [2024-01-31 16:06:52,354 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 519 selfloop transitions, 76 changer transitions 0/635 dead transitions. [2024-01-31 16:06:52,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 635 transitions, 13447 flow [2024-01-31 16:06:52,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:06:52,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:06:52,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 266 transitions. [2024-01-31 16:06:52,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4048706240487062 [2024-01-31 16:06:52,355 INFO L175 Difference]: Start difference. First operand has 425 places, 608 transitions, 12114 flow. Second operand 9 states and 266 transitions. [2024-01-31 16:06:52,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 635 transitions, 13447 flow [2024-01-31 16:06:53,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 635 transitions, 13272 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-01-31 16:06:53,069 INFO L231 Difference]: Finished difference. Result has 425 places, 608 transitions, 12103 flow [2024-01-31 16:06:53,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11939, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=532, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12103, PETRI_PLACES=425, PETRI_TRANSITIONS=608} [2024-01-31 16:06:53,069 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 348 predicate places. [2024-01-31 16:06:53,069 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 608 transitions, 12103 flow [2024-01-31 16:06:53,070 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) [2024-01-31 16:06:53,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:53,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:53,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-01-31 16:06:53,070 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:53,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:53,070 INFO L85 PathProgramCache]: Analyzing trace with hash -289591987, now seen corresponding path program 8 times [2024-01-31 16:06:53,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:53,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186867962] [2024-01-31 16:06:53,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:53,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:53,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:53,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:53,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:53,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186867962] [2024-01-31 16:06:53,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186867962] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:53,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:53,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:06:53,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149113810] [2024-01-31 16:06:53,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:53,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:06:53,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:53,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:06:53,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:06:53,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:53,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 608 transitions, 12103 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) [2024-01-31 16:06:53,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:53,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:53,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:54,927 INFO L124 PetriNetUnfolderBase]: 3285/6092 cut-off events. [2024-01-31 16:06:54,927 INFO L125 PetriNetUnfolderBase]: For 142308/142592 co-relation queries the response was YES. [2024-01-31 16:06:54,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40314 conditions, 6092 events. 3285/6092 cut-off events. For 142308/142592 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 44331 event pairs, 661 based on Foata normal form. 83/5975 useless extension candidates. Maximal degree in co-relation 40180. Up to 4525 conditions per place. [2024-01-31 16:06:54,991 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 469 selfloop transitions, 120 changer transitions 0/629 dead transitions. [2024-01-31 16:06:54,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 629 transitions, 13389 flow [2024-01-31 16:06:54,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:06:54,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:06:54,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 219 transitions. [2024-01-31 16:06:54,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-01-31 16:06:54,992 INFO L175 Difference]: Start difference. First operand has 425 places, 608 transitions, 12103 flow. Second operand 7 states and 219 transitions. [2024-01-31 16:06:54,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 629 transitions, 13389 flow [2024-01-31 16:06:55,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 629 transitions, 13228 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-01-31 16:06:55,593 INFO L231 Difference]: Finished difference. Result has 424 places, 608 transitions, 12196 flow [2024-01-31 16:06:55,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11942, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12196, PETRI_PLACES=424, PETRI_TRANSITIONS=608} [2024-01-31 16:06:55,594 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 347 predicate places. [2024-01-31 16:06:55,594 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 608 transitions, 12196 flow [2024-01-31 16:06:55,594 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) [2024-01-31 16:06:55,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:55,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:55,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-01-31 16:06:55,595 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:55,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:55,595 INFO L85 PathProgramCache]: Analyzing trace with hash -323967013, now seen corresponding path program 9 times [2024-01-31 16:06:55,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:55,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384721884] [2024-01-31 16:06:55,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:55,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:55,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:55,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:55,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:55,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384721884] [2024-01-31 16:06:55,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384721884] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:55,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:55,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:06:55,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929615896] [2024-01-31 16:06:55,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:55,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:06:55,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:55,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:06:55,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:06:55,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:55,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 608 transitions, 12196 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) [2024-01-31 16:06:55,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:55,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:55,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:57,289 INFO L124 PetriNetUnfolderBase]: 3289/6104 cut-off events. [2024-01-31 16:06:57,289 INFO L125 PetriNetUnfolderBase]: For 144799/145083 co-relation queries the response was YES. [2024-01-31 16:06:57,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40556 conditions, 6104 events. 3289/6104 cut-off events. For 144799/145083 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 44529 event pairs, 651 based on Foata normal form. 83/5987 useless extension candidates. Maximal degree in co-relation 40422. Up to 4717 conditions per place. [2024-01-31 16:06:57,368 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 471 selfloop transitions, 123 changer transitions 0/634 dead transitions. [2024-01-31 16:06:57,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 634 transitions, 13520 flow [2024-01-31 16:06:57,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:06:57,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:06:57,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 245 transitions. [2024-01-31 16:06:57,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4195205479452055 [2024-01-31 16:06:57,370 INFO L175 Difference]: Start difference. First operand has 424 places, 608 transitions, 12196 flow. Second operand 8 states and 245 transitions. [2024-01-31 16:06:57,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 634 transitions, 13520 flow [2024-01-31 16:06:58,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 634 transitions, 13196 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-01-31 16:06:58,045 INFO L231 Difference]: Finished difference. Result has 423 places, 609 transitions, 12151 flow [2024-01-31 16:06:58,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11875, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12151, PETRI_PLACES=423, PETRI_TRANSITIONS=609} [2024-01-31 16:06:58,046 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 346 predicate places. [2024-01-31 16:06:58,046 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 609 transitions, 12151 flow [2024-01-31 16:06:58,046 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) [2024-01-31 16:06:58,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:58,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:58,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-01-31 16:06:58,047 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:58,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:58,047 INFO L85 PathProgramCache]: Analyzing trace with hash 708291137, now seen corresponding path program 10 times [2024-01-31 16:06:58,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:58,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119424207] [2024-01-31 16:06:58,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:58,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:58,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:58,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:58,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:58,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119424207] [2024-01-31 16:06:58,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119424207] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:58,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:58,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:06:58,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182821045] [2024-01-31 16:06:58,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:58,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:06:58,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:58,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:06:58,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:06:58,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:58,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 609 transitions, 12151 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) [2024-01-31 16:06:58,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:58,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:58,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:59,794 INFO L124 PetriNetUnfolderBase]: 3349/6169 cut-off events. [2024-01-31 16:06:59,794 INFO L125 PetriNetUnfolderBase]: For 150383/150631 co-relation queries the response was YES. [2024-01-31 16:06:59,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41053 conditions, 6169 events. 3349/6169 cut-off events. For 150383/150631 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 44756 event pairs, 645 based on Foata normal form. 83/6024 useless extension candidates. Maximal degree in co-relation 40922. Up to 4775 conditions per place. [2024-01-31 16:06:59,863 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 469 selfloop transitions, 124 changer transitions 0/633 dead transitions. [2024-01-31 16:06:59,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 633 transitions, 13453 flow [2024-01-31 16:06:59,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:06:59,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:06:59,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 264 transitions. [2024-01-31 16:06:59,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4018264840182648 [2024-01-31 16:06:59,865 INFO L175 Difference]: Start difference. First operand has 423 places, 609 transitions, 12151 flow. Second operand 9 states and 264 transitions. [2024-01-31 16:06:59,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 633 transitions, 13453 flow [2024-01-31 16:07:00,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 633 transitions, 13016 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-01-31 16:07:00,492 INFO L231 Difference]: Finished difference. Result has 418 places, 612 transitions, 12009 flow [2024-01-31 16:07:00,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11705, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12009, PETRI_PLACES=418, PETRI_TRANSITIONS=612} [2024-01-31 16:07:00,493 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 341 predicate places. [2024-01-31 16:07:00,493 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 612 transitions, 12009 flow [2024-01-31 16:07:00,493 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) [2024-01-31 16:07:00,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:00,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:00,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-01-31 16:07:00,494 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:07:00,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:00,494 INFO L85 PathProgramCache]: Analyzing trace with hash 773793389, now seen corresponding path program 11 times [2024-01-31 16:07:00,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:00,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973687392] [2024-01-31 16:07:00,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:00,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:00,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:00,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:00,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:00,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973687392] [2024-01-31 16:07:00,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973687392] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:00,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:00,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:07:00,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549497293] [2024-01-31 16:07:00,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:00,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:07:00,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:00,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:07:00,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:07:00,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:07:00,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 612 transitions, 12009 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) [2024-01-31 16:07:00,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:00,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:07:00,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:02,135 INFO L124 PetriNetUnfolderBase]: 3292/6126 cut-off events. [2024-01-31 16:07:02,135 INFO L125 PetriNetUnfolderBase]: For 140282/140514 co-relation queries the response was YES. [2024-01-31 16:07:02,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39990 conditions, 6126 events. 3292/6126 cut-off events. For 140282/140514 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 44567 event pairs, 388 based on Foata normal form. 76/6033 useless extension candidates. Maximal degree in co-relation 39865. Up to 2058 conditions per place. [2024-01-31 16:07:02,212 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 332 selfloop transitions, 292 changer transitions 0/664 dead transitions. [2024-01-31 16:07:02,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 664 transitions, 13650 flow [2024-01-31 16:07:02,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:07:02,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:07:02,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 293 transitions. [2024-01-31 16:07:02,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4459665144596651 [2024-01-31 16:07:02,213 INFO L175 Difference]: Start difference. First operand has 418 places, 612 transitions, 12009 flow. Second operand 9 states and 293 transitions. [2024-01-31 16:07:02,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 664 transitions, 13650 flow [2024-01-31 16:07:02,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 664 transitions, 13419 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-01-31 16:07:02,875 INFO L231 Difference]: Finished difference. Result has 421 places, 612 transitions, 12392 flow [2024-01-31 16:07:02,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11780, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=292, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12392, PETRI_PLACES=421, PETRI_TRANSITIONS=612} [2024-01-31 16:07:02,875 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 344 predicate places. [2024-01-31 16:07:02,875 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 612 transitions, 12392 flow [2024-01-31 16:07:02,876 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) [2024-01-31 16:07:02,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:02,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:02,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-01-31 16:07:02,876 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:07:02,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:02,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1834741821, now seen corresponding path program 12 times [2024-01-31 16:07:02,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:02,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674665109] [2024-01-31 16:07:02,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:02,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:02,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:03,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:03,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:03,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674665109] [2024-01-31 16:07:03,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674665109] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:03,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:03,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:07:03,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120030332] [2024-01-31 16:07:03,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:03,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:07:03,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:03,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:07:03,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:07:03,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:07:03,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 612 transitions, 12392 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) [2024-01-31 16:07:03,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:03,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:07:03,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:04,603 INFO L124 PetriNetUnfolderBase]: 3276/6089 cut-off events. [2024-01-31 16:07:04,603 INFO L125 PetriNetUnfolderBase]: For 149097/149361 co-relation queries the response was YES. [2024-01-31 16:07:04,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40748 conditions, 6089 events. 3276/6089 cut-off events. For 149097/149361 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 44310 event pairs, 333 based on Foata normal form. 94/6015 useless extension candidates. Maximal degree in co-relation 40622. Up to 1849 conditions per place. [2024-01-31 16:07:04,694 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 342 selfloop transitions, 304 changer transitions 0/686 dead transitions. [2024-01-31 16:07:04,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 686 transitions, 14331 flow [2024-01-31 16:07:04,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:07:04,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:07:04,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 354 transitions. [2024-01-31 16:07:04,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44084682440846823 [2024-01-31 16:07:04,696 INFO L175 Difference]: Start difference. First operand has 421 places, 612 transitions, 12392 flow. Second operand 11 states and 354 transitions. [2024-01-31 16:07:04,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 686 transitions, 14331 flow [2024-01-31 16:07:05,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 686 transitions, 13641 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-01-31 16:07:05,392 INFO L231 Difference]: Finished difference. Result has 422 places, 612 transitions, 12378 flow [2024-01-31 16:07:05,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11724, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=304, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12378, PETRI_PLACES=422, PETRI_TRANSITIONS=612} [2024-01-31 16:07:05,392 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 345 predicate places. [2024-01-31 16:07:05,392 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 612 transitions, 12378 flow [2024-01-31 16:07:05,393 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) [2024-01-31 16:07:05,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:05,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:05,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-01-31 16:07:05,393 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:07:05,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:05,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1371199085, now seen corresponding path program 13 times [2024-01-31 16:07:05,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:05,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764101554] [2024-01-31 16:07:05,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:05,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:05,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:05,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:05,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:05,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764101554] [2024-01-31 16:07:05,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764101554] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:05,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:05,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:07:05,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29189900] [2024-01-31 16:07:05,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:05,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:07:05,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:05,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:07:05,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:07:05,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:07:05,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 612 transitions, 12378 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) [2024-01-31 16:07:05,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:05,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:07:05,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:07,388 INFO L124 PetriNetUnfolderBase]: 3476/6437 cut-off events. [2024-01-31 16:07:07,388 INFO L125 PetriNetUnfolderBase]: For 158836/159149 co-relation queries the response was YES. [2024-01-31 16:07:07,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42671 conditions, 6437 events. 3476/6437 cut-off events. For 158836/159149 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 47532 event pairs, 694 based on Foata normal form. 106/6343 useless extension candidates. Maximal degree in co-relation 42546. Up to 4721 conditions per place. [2024-01-31 16:07:07,487 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 512 selfloop transitions, 128 changer transitions 0/680 dead transitions. [2024-01-31 16:07:07,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 680 transitions, 14438 flow [2024-01-31 16:07:07,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:07:07,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:07:07,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 283 transitions. [2024-01-31 16:07:07,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4307458143074581 [2024-01-31 16:07:07,489 INFO L175 Difference]: Start difference. First operand has 422 places, 612 transitions, 12378 flow. Second operand 9 states and 283 transitions. [2024-01-31 16:07:07,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 680 transitions, 14438 flow [2024-01-31 16:07:08,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 680 transitions, 13752 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-01-31 16:07:08,382 INFO L231 Difference]: Finished difference. Result has 420 places, 633 transitions, 12473 flow [2024-01-31 16:07:08,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11734, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12473, PETRI_PLACES=420, PETRI_TRANSITIONS=633} [2024-01-31 16:07:08,383 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 343 predicate places. [2024-01-31 16:07:08,383 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 633 transitions, 12473 flow [2024-01-31 16:07:08,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:08,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:08,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:08,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-01-31 16:07:08,384 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:07:08,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:08,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1833821121, now seen corresponding path program 14 times [2024-01-31 16:07:08,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:08,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34768356] [2024-01-31 16:07:08,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:08,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:08,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:08,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:08,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:08,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34768356] [2024-01-31 16:07:08,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34768356] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:08,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:08,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:07:08,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665291066] [2024-01-31 16:07:08,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:08,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:07:08,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:08,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:07:08,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:07:08,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:07:08,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 633 transitions, 12473 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) [2024-01-31 16:07:08,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:08,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:07:08,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:10,599 INFO L124 PetriNetUnfolderBase]: 3472/6452 cut-off events. [2024-01-31 16:07:10,599 INFO L125 PetriNetUnfolderBase]: For 148465/148717 co-relation queries the response was YES. [2024-01-31 16:07:10,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41835 conditions, 6452 events. 3472/6452 cut-off events. For 148465/148717 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 47494 event pairs, 373 based on Foata normal form. 86/6352 useless extension candidates. Maximal degree in co-relation 41710. Up to 1931 conditions per place. [2024-01-31 16:07:10,682 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 332 selfloop transitions, 330 changer transitions 0/702 dead transitions. [2024-01-31 16:07:10,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 702 transitions, 14296 flow [2024-01-31 16:07:10,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 16:07:10,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 16:07:10,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 375 transitions. [2024-01-31 16:07:10,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4280821917808219 [2024-01-31 16:07:10,683 INFO L175 Difference]: Start difference. First operand has 420 places, 633 transitions, 12473 flow. Second operand 12 states and 375 transitions. [2024-01-31 16:07:10,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 702 transitions, 14296 flow [2024-01-31 16:07:11,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 702 transitions, 14079 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-01-31 16:07:11,378 INFO L231 Difference]: Finished difference. Result has 425 places, 633 transitions, 12942 flow [2024-01-31 16:07:11,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12260, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=330, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12942, PETRI_PLACES=425, PETRI_TRANSITIONS=633} [2024-01-31 16:07:11,379 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 348 predicate places. [2024-01-31 16:07:11,379 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 633 transitions, 12942 flow [2024-01-31 16:07:11,379 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) [2024-01-31 16:07:11,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:11,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:11,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-01-31 16:07:11,379 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:07:11,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:11,380 INFO L85 PathProgramCache]: Analyzing trace with hash 908807231, now seen corresponding path program 15 times [2024-01-31 16:07:11,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:11,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388031779] [2024-01-31 16:07:11,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:11,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:11,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:11,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:11,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:11,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388031779] [2024-01-31 16:07:11,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388031779] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:11,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:11,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:07:11,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282129970] [2024-01-31 16:07:11,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:11,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:07:11,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:11,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:07:11,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:07:11,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:07:11,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 633 transitions, 12942 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) [2024-01-31 16:07:11,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:11,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:07:11,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:13,234 INFO L124 PetriNetUnfolderBase]: 3444/6381 cut-off events. [2024-01-31 16:07:13,235 INFO L125 PetriNetUnfolderBase]: For 159816/160129 co-relation queries the response was YES. [2024-01-31 16:07:13,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42533 conditions, 6381 events. 3444/6381 cut-off events. For 159816/160129 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 47085 event pairs, 686 based on Foata normal form. 110/6291 useless extension candidates. Maximal degree in co-relation 42408. Up to 4687 conditions per place. [2024-01-31 16:07:13,311 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 524 selfloop transitions, 120 changer transitions 0/684 dead transitions. [2024-01-31 16:07:13,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 684 transitions, 14628 flow [2024-01-31 16:07:13,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:07:13,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:07:13,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 288 transitions. [2024-01-31 16:07:13,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4383561643835616 [2024-01-31 16:07:13,312 INFO L175 Difference]: Start difference. First operand has 425 places, 633 transitions, 12942 flow. Second operand 9 states and 288 transitions. [2024-01-31 16:07:13,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 684 transitions, 14628 flow [2024-01-31 16:07:13,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 684 transitions, 13955 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-01-31 16:07:13,957 INFO L231 Difference]: Finished difference. Result has 422 places, 633 transitions, 12535 flow [2024-01-31 16:07:13,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12277, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12535, PETRI_PLACES=422, PETRI_TRANSITIONS=633} [2024-01-31 16:07:13,959 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 345 predicate places. [2024-01-31 16:07:13,959 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 633 transitions, 12535 flow [2024-01-31 16:07:13,959 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) [2024-01-31 16:07:13,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:13,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:13,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-01-31 16:07:13,959 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:07:13,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:13,960 INFO L85 PathProgramCache]: Analyzing trace with hash 163287981, now seen corresponding path program 16 times [2024-01-31 16:07:13,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:13,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393687297] [2024-01-31 16:07:13,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:13,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:13,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:14,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:14,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:14,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393687297] [2024-01-31 16:07:14,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393687297] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:14,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:14,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:07:14,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502768595] [2024-01-31 16:07:14,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:14,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:07:14,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:14,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:07:14,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:07:14,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:07:14,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 633 transitions, 12535 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) [2024-01-31 16:07:14,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:14,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:07:14,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:15,738 INFO L124 PetriNetUnfolderBase]: 3444/6406 cut-off events. [2024-01-31 16:07:15,739 INFO L125 PetriNetUnfolderBase]: For 146217/146464 co-relation queries the response was YES. [2024-01-31 16:07:15,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41418 conditions, 6406 events. 3444/6406 cut-off events. For 146217/146464 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 47061 event pairs, 412 based on Foata normal form. 79/6295 useless extension candidates. Maximal degree in co-relation 41294. Up to 3893 conditions per place. [2024-01-31 16:07:15,824 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 401 selfloop transitions, 240 changer transitions 0/681 dead transitions. [2024-01-31 16:07:15,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 681 transitions, 14192 flow [2024-01-31 16:07:15,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:07:15,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:07:15,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 266 transitions. [2024-01-31 16:07:15,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4554794520547945 [2024-01-31 16:07:15,825 INFO L175 Difference]: Start difference. First operand has 422 places, 633 transitions, 12535 flow. Second operand 8 states and 266 transitions. [2024-01-31 16:07:15,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 681 transitions, 14192 flow [2024-01-31 16:07:16,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 681 transitions, 14027 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-01-31 16:07:16,531 INFO L231 Difference]: Finished difference. Result has 424 places, 633 transitions, 12947 flow [2024-01-31 16:07:16,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12374, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=240, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12947, PETRI_PLACES=424, PETRI_TRANSITIONS=633} [2024-01-31 16:07:16,532 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 347 predicate places. [2024-01-31 16:07:16,532 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 633 transitions, 12947 flow [2024-01-31 16:07:16,532 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) [2024-01-31 16:07:16,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:16,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:16,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-01-31 16:07:16,533 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:07:16,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:16,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1936596731, now seen corresponding path program 17 times [2024-01-31 16:07:16,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:16,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72232491] [2024-01-31 16:07:16,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:16,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:16,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:16,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:16,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:16,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72232491] [2024-01-31 16:07:16,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72232491] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:16,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:16,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:07:16,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718238987] [2024-01-31 16:07:16,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:16,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:07:16,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:16,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:07:16,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:07:16,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:07:16,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 633 transitions, 12947 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) [2024-01-31 16:07:16,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:16,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:07:16,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:18,430 INFO L124 PetriNetUnfolderBase]: 3415/6337 cut-off events. [2024-01-31 16:07:18,430 INFO L125 PetriNetUnfolderBase]: For 159502/159808 co-relation queries the response was YES. [2024-01-31 16:07:18,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41803 conditions, 6337 events. 3415/6337 cut-off events. For 159502/159808 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 46660 event pairs, 674 based on Foata normal form. 110/6249 useless extension candidates. Maximal degree in co-relation 41679. Up to 4660 conditions per place. [2024-01-31 16:07:18,509 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 527 selfloop transitions, 118 changer transitions 0/685 dead transitions. [2024-01-31 16:07:18,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 685 transitions, 14575 flow [2024-01-31 16:07:18,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:07:18,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:07:18,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 335 transitions. [2024-01-31 16:07:18,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41718555417185554 [2024-01-31 16:07:18,510 INFO L175 Difference]: Start difference. First operand has 424 places, 633 transitions, 12947 flow. Second operand 11 states and 335 transitions. [2024-01-31 16:07:18,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 685 transitions, 14575 flow [2024-01-31 16:07:19,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 685 transitions, 14083 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-01-31 16:07:19,174 INFO L231 Difference]: Finished difference. Result has 428 places, 633 transitions, 12709 flow [2024-01-31 16:07:19,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12455, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12709, PETRI_PLACES=428, PETRI_TRANSITIONS=633} [2024-01-31 16:07:19,174 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 351 predicate places. [2024-01-31 16:07:19,174 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 633 transitions, 12709 flow [2024-01-31 16:07:19,175 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) [2024-01-31 16:07:19,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:19,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:19,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-01-31 16:07:19,175 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:07:19,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:19,175 INFO L85 PathProgramCache]: Analyzing trace with hash 164208681, now seen corresponding path program 18 times [2024-01-31 16:07:19,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:19,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835550896] [2024-01-31 16:07:19,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:19,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:19,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:19,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:19,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:19,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835550896] [2024-01-31 16:07:19,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835550896] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:19,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:19,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:07:19,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321472920] [2024-01-31 16:07:19,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:19,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:07:19,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:19,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:07:19,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:07:19,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:07:19,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 633 transitions, 12709 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) [2024-01-31 16:07:19,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:19,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:07:19,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:20,912 INFO L124 PetriNetUnfolderBase]: 3412/6351 cut-off events. [2024-01-31 16:07:20,912 INFO L125 PetriNetUnfolderBase]: For 149767/150014 co-relation queries the response was YES. [2024-01-31 16:07:20,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41190 conditions, 6351 events. 3412/6351 cut-off events. For 149767/150014 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 46713 event pairs, 404 based on Foata normal form. 83/6244 useless extension candidates. Maximal degree in co-relation 41065. Up to 3881 conditions per place. [2024-01-31 16:07:21,000 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 424 selfloop transitions, 219 changer transitions 0/683 dead transitions. [2024-01-31 16:07:21,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 683 transitions, 14379 flow [2024-01-31 16:07:21,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:07:21,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:07:21,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 267 transitions. [2024-01-31 16:07:21,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4571917808219178 [2024-01-31 16:07:21,002 INFO L175 Difference]: Start difference. First operand has 428 places, 633 transitions, 12709 flow. Second operand 8 states and 267 transitions. [2024-01-31 16:07:21,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 683 transitions, 14379 flow [2024-01-31 16:07:21,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 683 transitions, 14200 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-01-31 16:07:21,694 INFO L231 Difference]: Finished difference. Result has 428 places, 633 transitions, 12997 flow [2024-01-31 16:07:21,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12534, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12997, PETRI_PLACES=428, PETRI_TRANSITIONS=633} [2024-01-31 16:07:21,695 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 351 predicate places. [2024-01-31 16:07:21,695 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 633 transitions, 12997 flow [2024-01-31 16:07:21,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:21,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:21,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:21,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-01-31 16:07:21,695 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:07:21,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:21,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1191998181, now seen corresponding path program 19 times [2024-01-31 16:07:21,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:21,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428172289] [2024-01-31 16:07:21,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:21,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:21,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:21,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:21,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:21,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428172289] [2024-01-31 16:07:21,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428172289] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:21,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:21,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:07:21,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004435559] [2024-01-31 16:07:21,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:21,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:07:21,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:21,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:07:21,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:07:21,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:07:21,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 633 transitions, 12997 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) [2024-01-31 16:07:21,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:21,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:07:21,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:23,537 INFO L124 PetriNetUnfolderBase]: 3456/6434 cut-off events. [2024-01-31 16:07:23,537 INFO L125 PetriNetUnfolderBase]: For 160418/160665 co-relation queries the response was YES. [2024-01-31 16:07:23,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42249 conditions, 6434 events. 3456/6434 cut-off events. For 160418/160665 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 47401 event pairs, 412 based on Foata normal form. 83/6327 useless extension candidates. Maximal degree in co-relation 42124. Up to 3901 conditions per place. [2024-01-31 16:07:23,618 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 432 selfloop transitions, 224 changer transitions 0/696 dead transitions. [2024-01-31 16:07:23,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 696 transitions, 14880 flow [2024-01-31 16:07:23,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:07:23,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:07:23,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 318 transitions. [2024-01-31 16:07:23,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43561643835616437 [2024-01-31 16:07:23,619 INFO L175 Difference]: Start difference. First operand has 428 places, 633 transitions, 12997 flow. Second operand 10 states and 318 transitions. [2024-01-31 16:07:23,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 696 transitions, 14880 flow [2024-01-31 16:07:24,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 696 transitions, 14406 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-01-31 16:07:24,329 INFO L231 Difference]: Finished difference. Result has 431 places, 640 transitions, 13251 flow [2024-01-31 16:07:24,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12541, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13251, PETRI_PLACES=431, PETRI_TRANSITIONS=640} [2024-01-31 16:07:24,329 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 354 predicate places. [2024-01-31 16:07:24,330 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 640 transitions, 13251 flow [2024-01-31 16:07:24,330 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) [2024-01-31 16:07:24,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:24,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:24,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-01-31 16:07:24,330 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:07:24,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:24,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1054634955, now seen corresponding path program 20 times [2024-01-31 16:07:24,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:24,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340870437] [2024-01-31 16:07:24,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:24,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:24,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:24,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:24,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340870437] [2024-01-31 16:07:24,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340870437] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:24,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:24,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:07:24,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130456282] [2024-01-31 16:07:24,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:24,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:07:24,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:24,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:07:24,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:07:24,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:07:24,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 640 transitions, 13251 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) [2024-01-31 16:07:24,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:24,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:07:24,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:26,209 INFO L124 PetriNetUnfolderBase]: 3537/6540 cut-off events. [2024-01-31 16:07:26,209 INFO L125 PetriNetUnfolderBase]: For 168830/169027 co-relation queries the response was YES. [2024-01-31 16:07:26,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43602 conditions, 6540 events. 3537/6540 cut-off events. For 168830/169027 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 48022 event pairs, 400 based on Foata normal form. 82/6410 useless extension candidates. Maximal degree in co-relation 43476. Up to 3927 conditions per place. [2024-01-31 16:07:26,279 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 425 selfloop transitions, 233 changer transitions 0/698 dead transitions. [2024-01-31 16:07:26,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 698 transitions, 14979 flow [2024-01-31 16:07:26,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:07:26,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:07:26,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 340 transitions. [2024-01-31 16:07:26,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42341220423412207 [2024-01-31 16:07:26,281 INFO L175 Difference]: Start difference. First operand has 431 places, 640 transitions, 13251 flow. Second operand 11 states and 340 transitions. [2024-01-31 16:07:26,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 698 transitions, 14979 flow [2024-01-31 16:07:26,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 698 transitions, 14715 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-01-31 16:07:26,888 INFO L231 Difference]: Finished difference. Result has 437 places, 647 transitions, 13610 flow [2024-01-31 16:07:26,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12990, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=226, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13610, PETRI_PLACES=437, PETRI_TRANSITIONS=647} [2024-01-31 16:07:26,888 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 360 predicate places. [2024-01-31 16:07:26,889 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 647 transitions, 13610 flow [2024-01-31 16:07:26,889 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) [2024-01-31 16:07:26,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:26,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:26,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-01-31 16:07:26,889 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:07:26,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:26,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1305232400, now seen corresponding path program 1 times [2024-01-31 16:07:26,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:26,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135186810] [2024-01-31 16:07:26,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:26,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:26,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:27,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:27,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:27,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135186810] [2024-01-31 16:07:27,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135186810] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:27,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:27,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:07:27,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109946813] [2024-01-31 16:07:27,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:27,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:07:27,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:27,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:07:27,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:07:27,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:07:27,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 647 transitions, 13610 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) [2024-01-31 16:07:27,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:27,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:07:27,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:28,663 INFO L124 PetriNetUnfolderBase]: 3072/5839 cut-off events. [2024-01-31 16:07:28,664 INFO L125 PetriNetUnfolderBase]: For 147322/147597 co-relation queries the response was YES. [2024-01-31 16:07:28,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39492 conditions, 5839 events. 3072/5839 cut-off events. For 147322/147597 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 43954 event pairs, 629 based on Foata normal form. 9/5755 useless extension candidates. Maximal degree in co-relation 39365. Up to 3767 conditions per place. [2024-01-31 16:07:28,744 INFO L140 encePairwiseOnDemand]: 56/73 looper letters, 559 selfloop transitions, 154 changer transitions 7/744 dead transitions. [2024-01-31 16:07:28,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 744 transitions, 16104 flow [2024-01-31 16:07:28,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:07:28,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:07:28,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 370 transitions. [2024-01-31 16:07:28,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46077210460772106 [2024-01-31 16:07:28,746 INFO L175 Difference]: Start difference. First operand has 437 places, 647 transitions, 13610 flow. Second operand 11 states and 370 transitions. [2024-01-31 16:07:28,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 744 transitions, 16104 flow [2024-01-31 16:07:29,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 744 transitions, 15683 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-01-31 16:07:29,401 INFO L231 Difference]: Finished difference. Result has 445 places, 647 transitions, 13610 flow [2024-01-31 16:07:29,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=13201, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=647, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13610, PETRI_PLACES=445, PETRI_TRANSITIONS=647} [2024-01-31 16:07:29,401 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 368 predicate places. [2024-01-31 16:07:29,402 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 647 transitions, 13610 flow [2024-01-31 16:07:29,402 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) [2024-01-31 16:07:29,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:29,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:29,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-01-31 16:07:29,402 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:07:29,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:29,403 INFO L85 PathProgramCache]: Analyzing trace with hash -2082046030, now seen corresponding path program 1 times [2024-01-31 16:07:29,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:29,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493901411] [2024-01-31 16:07:29,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:29,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:29,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:29,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:29,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:29,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493901411] [2024-01-31 16:07:29,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493901411] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:29,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:29,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:07:29,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868362907] [2024-01-31 16:07:29,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:29,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:07:29,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:29,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:07:29,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:07:29,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:07:29,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 647 transitions, 13610 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) [2024-01-31 16:07:29,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:29,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:07:29,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:31,305 INFO L124 PetriNetUnfolderBase]: 3575/6801 cut-off events. [2024-01-31 16:07:31,305 INFO L125 PetriNetUnfolderBase]: For 179351/179677 co-relation queries the response was YES. [2024-01-31 16:07:31,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46222 conditions, 6801 events. 3575/6801 cut-off events. For 179351/179677 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 52052 event pairs, 877 based on Foata normal form. 107/6710 useless extension candidates. Maximal degree in co-relation 46091. Up to 5171 conditions per place. [2024-01-31 16:07:31,392 INFO L140 encePairwiseOnDemand]: 61/73 looper letters, 594 selfloop transitions, 68 changer transitions 5/707 dead transitions. [2024-01-31 16:07:31,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 707 transitions, 15535 flow [2024-01-31 16:07:31,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:07:31,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:07:31,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 286 transitions. [2024-01-31 16:07:31,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4353120243531202 [2024-01-31 16:07:31,393 INFO L175 Difference]: Start difference. First operand has 445 places, 647 transitions, 13610 flow. Second operand 9 states and 286 transitions. [2024-01-31 16:07:31,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 707 transitions, 15535 flow [2024-01-31 16:07:32,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 707 transitions, 15246 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-01-31 16:07:32,132 INFO L231 Difference]: Finished difference. Result has 446 places, 644 transitions, 13465 flow [2024-01-31 16:07:32,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=13343, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=647, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=579, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13465, PETRI_PLACES=446, PETRI_TRANSITIONS=644} [2024-01-31 16:07:32,133 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 369 predicate places. [2024-01-31 16:07:32,133 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 644 transitions, 13465 flow [2024-01-31 16:07:32,133 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) [2024-01-31 16:07:32,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:32,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:32,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-01-31 16:07:32,133 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:07:32,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:32,134 INFO L85 PathProgramCache]: Analyzing trace with hash 992808500, now seen corresponding path program 2 times [2024-01-31 16:07:32,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:32,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578205483] [2024-01-31 16:07:32,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:32,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:32,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:32,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:32,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:32,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578205483] [2024-01-31 16:07:32,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578205483] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:32,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:32,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:07:32,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181998953] [2024-01-31 16:07:32,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:32,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:07:32,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:32,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:07:32,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:07:32,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:07:32,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 644 transitions, 13465 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) [2024-01-31 16:07:32,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:32,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:07:32,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:34,169 INFO L124 PetriNetUnfolderBase]: 3145/6185 cut-off events. [2024-01-31 16:07:34,169 INFO L125 PetriNetUnfolderBase]: For 155534/155835 co-relation queries the response was YES. [2024-01-31 16:07:34,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41521 conditions, 6185 events. 3145/6185 cut-off events. For 155534/155835 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 48692 event pairs, 731 based on Foata normal form. 41/6171 useless extension candidates. Maximal degree in co-relation 41389. Up to 1826 conditions per place. [2024-01-31 16:07:34,230 INFO L140 encePairwiseOnDemand]: 61/73 looper letters, 589 selfloop transitions, 157 changer transitions 12/782 dead transitions. [2024-01-31 16:07:34,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 782 transitions, 16681 flow [2024-01-31 16:07:34,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 16:07:34,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 16:07:34,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 414 transitions. [2024-01-31 16:07:34,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4726027397260274 [2024-01-31 16:07:34,232 INFO L175 Difference]: Start difference. First operand has 446 places, 644 transitions, 13465 flow. Second operand 12 states and 414 transitions. [2024-01-31 16:07:34,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 782 transitions, 16681 flow [2024-01-31 16:07:34,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 782 transitions, 16555 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-01-31 16:07:34,881 INFO L231 Difference]: Finished difference. Result has 454 places, 634 transitions, 13640 flow [2024-01-31 16:07:34,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=13339, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=644, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=13640, PETRI_PLACES=454, PETRI_TRANSITIONS=634} [2024-01-31 16:07:34,881 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 377 predicate places. [2024-01-31 16:07:34,881 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 634 transitions, 13640 flow [2024-01-31 16:07:34,881 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) [2024-01-31 16:07:34,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:34,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:34,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-01-31 16:07:34,882 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:07:34,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:34,882 INFO L85 PathProgramCache]: Analyzing trace with hash 802610698, now seen corresponding path program 3 times [2024-01-31 16:07:34,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:34,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040852756] [2024-01-31 16:07:34,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:34,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:34,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:35,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:35,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:35,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040852756] [2024-01-31 16:07:35,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040852756] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:35,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:35,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:07:35,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963664389] [2024-01-31 16:07:35,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:35,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:07:35,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:35,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:07:35,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:07:35,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:07:35,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 634 transitions, 13640 flow. Second operand has 10 states, 10 states have (on average 22.8) internal successors, (228), 10 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) [2024-01-31 16:07:35,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:35,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:07:35,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:36,702 INFO L124 PetriNetUnfolderBase]: 3167/6372 cut-off events. [2024-01-31 16:07:36,702 INFO L125 PetriNetUnfolderBase]: For 170597/170901 co-relation queries the response was YES. [2024-01-31 16:07:36,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43341 conditions, 6372 events. 3167/6372 cut-off events. For 170597/170901 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 51357 event pairs, 375 based on Foata normal form. 17/6308 useless extension candidates. Maximal degree in co-relation 43205. Up to 3290 conditions per place. [2024-01-31 16:07:36,808 INFO L140 encePairwiseOnDemand]: 55/73 looper letters, 488 selfloop transitions, 182 changer transitions 6/700 dead transitions. [2024-01-31 16:07:36,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 700 transitions, 15760 flow [2024-01-31 16:07:36,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:07:36,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:07:36,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 307 transitions. [2024-01-31 16:07:36,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4672754946727549 [2024-01-31 16:07:36,810 INFO L175 Difference]: Start difference. First operand has 454 places, 634 transitions, 13640 flow. Second operand 9 states and 307 transitions. [2024-01-31 16:07:36,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 700 transitions, 15760 flow [2024-01-31 16:07:37,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 700 transitions, 15468 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-01-31 16:07:37,758 INFO L231 Difference]: Finished difference. Result has 457 places, 636 transitions, 13907 flow [2024-01-31 16:07:37,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=13360, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13907, PETRI_PLACES=457, PETRI_TRANSITIONS=636} [2024-01-31 16:07:37,758 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 380 predicate places. [2024-01-31 16:07:37,759 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 636 transitions, 13907 flow [2024-01-31 16:07:37,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.8) internal successors, (228), 10 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) [2024-01-31 16:07:37,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:37,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:37,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-01-31 16:07:37,759 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:07:37,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:37,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1353169066, now seen corresponding path program 4 times [2024-01-31 16:07:37,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:37,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080259761] [2024-01-31 16:07:37,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:37,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:37,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:37,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:37,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:37,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080259761] [2024-01-31 16:07:37,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080259761] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:37,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:37,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:07:37,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483163049] [2024-01-31 16:07:37,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:37,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:07:37,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:37,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:07:37,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:07:38,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:07:38,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 636 transitions, 13907 flow. Second operand has 10 states, 10 states have (on average 22.8) internal successors, (228), 10 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) [2024-01-31 16:07:38,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:38,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:07:38,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:39,667 INFO L124 PetriNetUnfolderBase]: 3154/6377 cut-off events. [2024-01-31 16:07:39,667 INFO L125 PetriNetUnfolderBase]: For 177732/178054 co-relation queries the response was YES. [2024-01-31 16:07:39,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45432 conditions, 6377 events. 3154/6377 cut-off events. For 177732/178054 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 51575 event pairs, 382 based on Foata normal form. 9/6305 useless extension candidates. Maximal degree in co-relation 45294. Up to 3282 conditions per place. [2024-01-31 16:07:39,748 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 494 selfloop transitions, 175 changer transitions 8/701 dead transitions. [2024-01-31 16:07:39,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 701 transitions, 16064 flow [2024-01-31 16:07:39,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:07:39,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:07:39,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 313 transitions. [2024-01-31 16:07:39,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4764079147640791 [2024-01-31 16:07:39,750 INFO L175 Difference]: Start difference. First operand has 457 places, 636 transitions, 13907 flow. Second operand 9 states and 313 transitions. [2024-01-31 16:07:39,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 701 transitions, 16064 flow [2024-01-31 16:07:40,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 701 transitions, 15674 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-01-31 16:07:40,635 INFO L231 Difference]: Finished difference. Result has 456 places, 630 transitions, 13827 flow [2024-01-31 16:07:40,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=13536, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=636, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13827, PETRI_PLACES=456, PETRI_TRANSITIONS=630} [2024-01-31 16:07:40,635 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 379 predicate places. [2024-01-31 16:07:40,635 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 630 transitions, 13827 flow [2024-01-31 16:07:40,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.8) internal successors, (228), 10 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) [2024-01-31 16:07:40,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:40,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:40,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-01-31 16:07:40,636 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:07:40,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:40,636 INFO L85 PathProgramCache]: Analyzing trace with hash 708010728, now seen corresponding path program 5 times [2024-01-31 16:07:40,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:40,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732925067] [2024-01-31 16:07:40,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:40,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:40,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:40,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:40,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:40,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732925067] [2024-01-31 16:07:40,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732925067] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:40,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:40,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:07:40,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661806389] [2024-01-31 16:07:40,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:40,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:07:40,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:40,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:07:40,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:07:40,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:07:40,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 630 transitions, 13827 flow. Second operand has 10 states, 10 states have (on average 22.8) internal successors, (228), 10 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) [2024-01-31 16:07:40,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:40,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:07:40,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:42,787 INFO L124 PetriNetUnfolderBase]: 3360/6940 cut-off events. [2024-01-31 16:07:42,787 INFO L125 PetriNetUnfolderBase]: For 202705/203060 co-relation queries the response was YES. [2024-01-31 16:07:42,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50590 conditions, 6940 events. 3360/6940 cut-off events. For 202705/203060 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 58084 event pairs, 422 based on Foata normal form. 9/6856 useless extension candidates. Maximal degree in co-relation 50455. Up to 2428 conditions per place. [2024-01-31 16:07:42,861 INFO L140 encePairwiseOnDemand]: 54/73 looper letters, 404 selfloop transitions, 314 changer transitions 12/754 dead transitions. [2024-01-31 16:07:42,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 754 transitions, 17522 flow [2024-01-31 16:07:42,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:07:42,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:07:42,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 348 transitions. [2024-01-31 16:07:42,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4767123287671233 [2024-01-31 16:07:42,863 INFO L175 Difference]: Start difference. First operand has 456 places, 630 transitions, 13827 flow. Second operand 10 states and 348 transitions. [2024-01-31 16:07:42,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 754 transitions, 17522 flow [2024-01-31 16:07:43,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 754 transitions, 17144 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-01-31 16:07:43,761 INFO L231 Difference]: Finished difference. Result has 459 places, 677 transitions, 15565 flow [2024-01-31 16:07:43,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=13462, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=260, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15565, PETRI_PLACES=459, PETRI_TRANSITIONS=677} [2024-01-31 16:07:43,761 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 382 predicate places. [2024-01-31 16:07:43,762 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 677 transitions, 15565 flow [2024-01-31 16:07:43,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.8) internal successors, (228), 10 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) [2024-01-31 16:07:43,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:43,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:43,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-01-31 16:07:43,762 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:07:43,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:43,763 INFO L85 PathProgramCache]: Analyzing trace with hash -644259220, now seen corresponding path program 6 times [2024-01-31 16:07:43,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:43,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182632592] [2024-01-31 16:07:43,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:43,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:43,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:44,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:44,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:44,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182632592] [2024-01-31 16:07:44,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182632592] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:44,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:44,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:07:44,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196424373] [2024-01-31 16:07:44,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:44,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:07:44,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:44,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:07:44,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:07:44,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:07:44,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 677 transitions, 15565 flow. Second operand has 10 states, 10 states have (on average 22.8) internal successors, (228), 10 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) [2024-01-31 16:07:44,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:44,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:07:44,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:45,848 INFO L124 PetriNetUnfolderBase]: 3359/7021 cut-off events. [2024-01-31 16:07:45,848 INFO L125 PetriNetUnfolderBase]: For 216814/217166 co-relation queries the response was YES. [2024-01-31 16:07:45,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53361 conditions, 7021 events. 3359/7021 cut-off events. For 216814/217166 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 59297 event pairs, 436 based on Foata normal form. 9/6937 useless extension candidates. Maximal degree in co-relation 53225. Up to 2796 conditions per place. [2024-01-31 16:07:45,947 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 421 selfloop transitions, 272 changer transitions 17/734 dead transitions. [2024-01-31 16:07:45,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 734 transitions, 17608 flow [2024-01-31 16:07:45,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:07:45,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:07:45,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 303 transitions. [2024-01-31 16:07:45,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4611872146118721 [2024-01-31 16:07:45,948 INFO L175 Difference]: Start difference. First operand has 459 places, 677 transitions, 15565 flow. Second operand 9 states and 303 transitions. [2024-01-31 16:07:45,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 734 transitions, 17608 flow [2024-01-31 16:07:47,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 734 transitions, 17306 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-01-31 16:07:47,103 INFO L231 Difference]: Finished difference. Result has 463 places, 667 transitions, 15953 flow [2024-01-31 16:07:47,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=15277, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=677, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=267, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15953, PETRI_PLACES=463, PETRI_TRANSITIONS=667} [2024-01-31 16:07:47,104 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 386 predicate places. [2024-01-31 16:07:47,104 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 667 transitions, 15953 flow [2024-01-31 16:07:47,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.8) internal successors, (228), 10 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) [2024-01-31 16:07:47,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:47,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:47,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-01-31 16:07:47,105 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:07:47,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:47,105 INFO L85 PathProgramCache]: Analyzing trace with hash 459543378, now seen corresponding path program 2 times [2024-01-31 16:07:47,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:47,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784985279] [2024-01-31 16:07:47,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:47,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:47,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:47,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:47,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:47,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784985279] [2024-01-31 16:07:47,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784985279] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:47,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:47,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:07:47,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887970498] [2024-01-31 16:07:47,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:47,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:07:47,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:47,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:07:47,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:07:47,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:07:47,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 667 transitions, 15953 flow. Second operand has 10 states, 10 states have (on average 22.8) internal successors, (228), 10 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) [2024-01-31 16:07:47,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:47,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:07:47,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:49,361 INFO L124 PetriNetUnfolderBase]: 3903/7964 cut-off events. [2024-01-31 16:07:49,362 INFO L125 PetriNetUnfolderBase]: For 270203/270608 co-relation queries the response was YES. [2024-01-31 16:07:49,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62840 conditions, 7964 events. 3903/7964 cut-off events. For 270203/270608 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 66698 event pairs, 1101 based on Foata normal form. 27/7715 useless extension candidates. Maximal degree in co-relation 62701. Up to 5735 conditions per place. [2024-01-31 16:07:49,471 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 520 selfloop transitions, 128 changer transitions 19/708 dead transitions. [2024-01-31 16:07:49,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 708 transitions, 17609 flow [2024-01-31 16:07:49,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:07:49,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:07:49,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 281 transitions. [2024-01-31 16:07:49,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4277016742770167 [2024-01-31 16:07:49,472 INFO L175 Difference]: Start difference. First operand has 463 places, 667 transitions, 15953 flow. Second operand 9 states and 281 transitions. [2024-01-31 16:07:49,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 708 transitions, 17609 flow [2024-01-31 16:07:50,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 708 transitions, 17065 flow, removed 24 selfloop flow, removed 18 redundant places. [2024-01-31 16:07:50,938 INFO L231 Difference]: Finished difference. Result has 454 places, 648 transitions, 15260 flow [2024-01-31 16:07:50,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=15417, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=667, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15260, PETRI_PLACES=454, PETRI_TRANSITIONS=648} [2024-01-31 16:07:50,938 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 377 predicate places. [2024-01-31 16:07:50,938 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 648 transitions, 15260 flow [2024-01-31 16:07:50,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.8) internal successors, (228), 10 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) [2024-01-31 16:07:50,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:50,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:50,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-01-31 16:07:50,939 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:07:50,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:50,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1629493230, now seen corresponding path program 7 times [2024-01-31 16:07:50,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:50,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040147079] [2024-01-31 16:07:50,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:50,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:50,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:51,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:51,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:51,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040147079] [2024-01-31 16:07:51,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040147079] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:51,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:51,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:07:51,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522469358] [2024-01-31 16:07:51,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:51,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:07:51,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:51,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:07:51,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:07:51,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:07:51,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 648 transitions, 15260 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) [2024-01-31 16:07:51,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:51,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:07:51,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:52,960 INFO L124 PetriNetUnfolderBase]: 3249/6748 cut-off events. [2024-01-31 16:07:52,961 INFO L125 PetriNetUnfolderBase]: For 208521/208849 co-relation queries the response was YES. [2024-01-31 16:07:53,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52259 conditions, 6748 events. 3249/6748 cut-off events. For 208521/208849 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 56151 event pairs, 935 based on Foata normal form. 21/6676 useless extension candidates. Maximal degree in co-relation 52125. Up to 4473 conditions per place. [2024-01-31 16:07:53,055 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 552 selfloop transitions, 147 changer transitions 14/737 dead transitions. [2024-01-31 16:07:53,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 737 transitions, 17881 flow [2024-01-31 16:07:53,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:07:53,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:07:53,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 316 transitions. [2024-01-31 16:07:53,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4809741248097412 [2024-01-31 16:07:53,056 INFO L175 Difference]: Start difference. First operand has 454 places, 648 transitions, 15260 flow. Second operand 9 states and 316 transitions. [2024-01-31 16:07:53,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 737 transitions, 17881 flow [2024-01-31 16:07:54,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 737 transitions, 17284 flow, removed 20 selfloop flow, removed 20 redundant places. [2024-01-31 16:07:54,115 INFO L231 Difference]: Finished difference. Result has 443 places, 636 transitions, 14802 flow [2024-01-31 16:07:54,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=14689, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=648, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14802, PETRI_PLACES=443, PETRI_TRANSITIONS=636} [2024-01-31 16:07:54,115 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 366 predicate places. [2024-01-31 16:07:54,115 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 636 transitions, 14802 flow [2024-01-31 16:07:54,116 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) [2024-01-31 16:07:54,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:54,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:54,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-01-31 16:07:54,116 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:07:54,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:54,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1730473514, now seen corresponding path program 8 times [2024-01-31 16:07:54,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:54,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989508816] [2024-01-31 16:07:54,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:54,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:54,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:54,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:54,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:54,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989508816] [2024-01-31 16:07:54,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989508816] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:54,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:54,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:07:54,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305040492] [2024-01-31 16:07:54,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:54,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:07:54,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:54,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:07:54,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:07:54,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:07:54,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 636 transitions, 14802 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) [2024-01-31 16:07:54,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:54,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:07:54,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:56,166 INFO L124 PetriNetUnfolderBase]: 3188/6609 cut-off events. [2024-01-31 16:07:56,166 INFO L125 PetriNetUnfolderBase]: For 192212/192540 co-relation queries the response was YES. [2024-01-31 16:07:56,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50347 conditions, 6609 events. 3188/6609 cut-off events. For 192212/192540 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 54696 event pairs, 907 based on Foata normal form. 21/6537 useless extension candidates. Maximal degree in co-relation 50217. Up to 4473 conditions per place. [2024-01-31 16:07:56,235 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 557 selfloop transitions, 139 changer transitions 5/725 dead transitions. [2024-01-31 16:07:56,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 725 transitions, 17298 flow [2024-01-31 16:07:56,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:07:56,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:07:56,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 313 transitions. [2024-01-31 16:07:56,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4764079147640791 [2024-01-31 16:07:56,236 INFO L175 Difference]: Start difference. First operand has 443 places, 636 transitions, 14802 flow. Second operand 9 states and 313 transitions. [2024-01-31 16:07:56,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 725 transitions, 17298 flow [2024-01-31 16:07:57,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 725 transitions, 16976 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-01-31 16:07:57,122 INFO L231 Difference]: Finished difference. Result has 442 places, 634 transitions, 14736 flow [2024-01-31 16:07:57,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=14480, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=636, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14736, PETRI_PLACES=442, PETRI_TRANSITIONS=634} [2024-01-31 16:07:57,123 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 365 predicate places. [2024-01-31 16:07:57,123 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 634 transitions, 14736 flow [2024-01-31 16:07:57,123 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) [2024-01-31 16:07:57,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:57,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:57,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-01-31 16:07:57,124 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:07:57,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:57,124 INFO L85 PathProgramCache]: Analyzing trace with hash 94499068, now seen corresponding path program 3 times [2024-01-31 16:07:57,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:57,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387401881] [2024-01-31 16:07:57,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:57,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:57,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:57,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:57,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:57,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387401881] [2024-01-31 16:07:57,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387401881] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:57,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:57,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:07:57,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508012517] [2024-01-31 16:07:57,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:57,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:07:57,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:57,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:07:57,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:07:57,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:07:57,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 634 transitions, 14736 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) [2024-01-31 16:07:57,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:57,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:07:57,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:59,308 INFO L124 PetriNetUnfolderBase]: 3761/7571 cut-off events. [2024-01-31 16:07:59,308 INFO L125 PetriNetUnfolderBase]: For 222759/223191 co-relation queries the response was YES. [2024-01-31 16:07:59,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57788 conditions, 7571 events. 3761/7571 cut-off events. For 222759/223191 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 61930 event pairs, 1039 based on Foata normal form. 43/7351 useless extension candidates. Maximal degree in co-relation 57659. Up to 4869 conditions per place. [2024-01-31 16:07:59,404 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 532 selfloop transitions, 119 changer transitions 11/703 dead transitions. [2024-01-31 16:07:59,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 703 transitions, 16752 flow [2024-01-31 16:07:59,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:07:59,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:07:59,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 296 transitions. [2024-01-31 16:07:59,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4505327245053272 [2024-01-31 16:07:59,406 INFO L175 Difference]: Start difference. First operand has 442 places, 634 transitions, 14736 flow. Second operand 9 states and 296 transitions. [2024-01-31 16:07:59,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 703 transitions, 16752 flow [2024-01-31 16:08:00,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 703 transitions, 16468 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-01-31 16:08:00,511 INFO L231 Difference]: Finished difference. Result has 443 places, 623 transitions, 14520 flow [2024-01-31 16:08:00,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=14452, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14520, PETRI_PLACES=443, PETRI_TRANSITIONS=623} [2024-01-31 16:08:00,512 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 366 predicate places. [2024-01-31 16:08:00,512 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 623 transitions, 14520 flow [2024-01-31 16:08:00,512 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) [2024-01-31 16:08:00,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:00,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:08:00,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-01-31 16:08:00,513 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:08:00,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:00,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1729902698, now seen corresponding path program 9 times [2024-01-31 16:08:00,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:00,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674298371] [2024-01-31 16:08:00,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:00,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:00,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:00,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:00,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:00,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674298371] [2024-01-31 16:08:00,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674298371] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:00,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:00,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:08:00,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132915790] [2024-01-31 16:08:00,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:00,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:08:00,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:00,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:08:00,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:08:00,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:08:00,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 623 transitions, 14520 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) [2024-01-31 16:08:00,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:00,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:08:00,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:02,317 INFO L124 PetriNetUnfolderBase]: 3123/6513 cut-off events. [2024-01-31 16:08:02,318 INFO L125 PetriNetUnfolderBase]: For 188197/188511 co-relation queries the response was YES. [2024-01-31 16:08:02,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49248 conditions, 6513 events. 3123/6513 cut-off events. For 188197/188511 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 53889 event pairs, 819 based on Foata normal form. 25/6459 useless extension candidates. Maximal degree in co-relation 49119. Up to 2495 conditions per place. [2024-01-31 16:08:02,403 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 462 selfloop transitions, 203 changer transitions 22/711 dead transitions. [2024-01-31 16:08:02,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 711 transitions, 17004 flow [2024-01-31 16:08:02,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:08:02,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:08:02,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 332 transitions. [2024-01-31 16:08:02,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4547945205479452 [2024-01-31 16:08:02,404 INFO L175 Difference]: Start difference. First operand has 443 places, 623 transitions, 14520 flow. Second operand 10 states and 332 transitions. [2024-01-31 16:08:02,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 711 transitions, 17004 flow [2024-01-31 16:08:03,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 711 transitions, 16738 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-01-31 16:08:03,363 INFO L231 Difference]: Finished difference. Result has 444 places, 602 transitions, 14257 flow [2024-01-31 16:08:03,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=14254, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14257, PETRI_PLACES=444, PETRI_TRANSITIONS=602} [2024-01-31 16:08:03,364 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 367 predicate places. [2024-01-31 16:08:03,364 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 602 transitions, 14257 flow [2024-01-31 16:08:03,364 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) [2024-01-31 16:08:03,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:03,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:08:03,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-01-31 16:08:03,365 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:08:03,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:03,365 INFO L85 PathProgramCache]: Analyzing trace with hash -475428944, now seen corresponding path program 4 times [2024-01-31 16:08:03,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:03,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456496429] [2024-01-31 16:08:03,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:03,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:03,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:03,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:03,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:03,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456496429] [2024-01-31 16:08:03,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456496429] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:03,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:03,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:08:03,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065679625] [2024-01-31 16:08:03,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:03,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:08:03,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:03,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:08:03,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:08:03,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:08:03,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 602 transitions, 14257 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) [2024-01-31 16:08:03,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:03,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:08:03,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:05,552 INFO L124 PetriNetUnfolderBase]: 3657/7371 cut-off events. [2024-01-31 16:08:05,553 INFO L125 PetriNetUnfolderBase]: For 222306/222724 co-relation queries the response was YES. [2024-01-31 16:08:05,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56530 conditions, 7371 events. 3657/7371 cut-off events. For 222306/222724 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 59933 event pairs, 1000 based on Foata normal form. 62/7183 useless extension candidates. Maximal degree in co-relation 56400. Up to 4808 conditions per place. [2024-01-31 16:08:05,633 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 502 selfloop transitions, 127 changer transitions 8/677 dead transitions. [2024-01-31 16:08:05,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 677 transitions, 16239 flow [2024-01-31 16:08:05,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:08:05,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:08:05,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 348 transitions. [2024-01-31 16:08:05,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43337484433374845 [2024-01-31 16:08:05,634 INFO L175 Difference]: Start difference. First operand has 444 places, 602 transitions, 14257 flow. Second operand 11 states and 348 transitions. [2024-01-31 16:08:05,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 677 transitions, 16239 flow [2024-01-31 16:08:06,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 677 transitions, 15653 flow, removed 8 selfloop flow, removed 16 redundant places. [2024-01-31 16:08:06,684 INFO L231 Difference]: Finished difference. Result has 439 places, 595 transitions, 13820 flow [2024-01-31 16:08:06,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=13671, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13820, PETRI_PLACES=439, PETRI_TRANSITIONS=595} [2024-01-31 16:08:06,685 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 362 predicate places. [2024-01-31 16:08:06,685 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 595 transitions, 13820 flow [2024-01-31 16:08:06,685 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) [2024-01-31 16:08:06,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:06,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:08:06,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-01-31 16:08:06,686 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:08:06,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:06,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1895581332, now seen corresponding path program 5 times [2024-01-31 16:08:06,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:06,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765488716] [2024-01-31 16:08:06,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:06,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:06,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:06,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:06,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:06,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765488716] [2024-01-31 16:08:06,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765488716] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:06,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:06,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:08:06,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713351329] [2024-01-31 16:08:06,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:06,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:08:06,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:06,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:08:06,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:08:06,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:08:06,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 595 transitions, 13820 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) [2024-01-31 16:08:06,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:06,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:08:06,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:08,877 INFO L124 PetriNetUnfolderBase]: 3593/7248 cut-off events. [2024-01-31 16:08:08,878 INFO L125 PetriNetUnfolderBase]: For 210655/211052 co-relation queries the response was YES. [2024-01-31 16:08:08,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54896 conditions, 7248 events. 3593/7248 cut-off events. For 210655/211052 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 58741 event pairs, 990 based on Foata normal form. 48/7046 useless extension candidates. Maximal degree in co-relation 54768. Up to 4808 conditions per place. [2024-01-31 16:08:08,971 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 486 selfloop transitions, 117 changer transitions 24/666 dead transitions. [2024-01-31 16:08:08,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 666 transitions, 15647 flow [2024-01-31 16:08:08,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 16:08:08,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 16:08:08,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 368 transitions. [2024-01-31 16:08:08,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4200913242009132 [2024-01-31 16:08:08,972 INFO L175 Difference]: Start difference. First operand has 439 places, 595 transitions, 13820 flow. Second operand 12 states and 368 transitions. [2024-01-31 16:08:08,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 666 transitions, 15647 flow [2024-01-31 16:08:10,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 666 transitions, 15377 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-01-31 16:08:10,063 INFO L231 Difference]: Finished difference. Result has 441 places, 572 transitions, 13355 flow [2024-01-31 16:08:10,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=13550, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=13355, PETRI_PLACES=441, PETRI_TRANSITIONS=572} [2024-01-31 16:08:10,064 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 364 predicate places. [2024-01-31 16:08:10,064 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 572 transitions, 13355 flow [2024-01-31 16:08:10,064 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) [2024-01-31 16:08:10,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:10,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:08:10,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-01-31 16:08:10,065 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:08:10,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:10,065 INFO L85 PathProgramCache]: Analyzing trace with hash -920760780, now seen corresponding path program 10 times [2024-01-31 16:08:10,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:10,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352576357] [2024-01-31 16:08:10,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:10,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:10,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:10,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:10,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:10,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352576357] [2024-01-31 16:08:10,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352576357] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:10,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:10,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:08:10,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030858405] [2024-01-31 16:08:10,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:10,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:08:10,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:10,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:08:10,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:08:10,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:08:10,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 572 transitions, 13355 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) [2024-01-31 16:08:10,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:10,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:08:10,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:11,964 INFO L124 PetriNetUnfolderBase]: 2967/6183 cut-off events. [2024-01-31 16:08:11,964 INFO L125 PetriNetUnfolderBase]: For 175356/175652 co-relation queries the response was YES. [2024-01-31 16:08:12,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46360 conditions, 6183 events. 2967/6183 cut-off events. For 175356/175652 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 50605 event pairs, 767 based on Foata normal form. 21/6125 useless extension candidates. Maximal degree in co-relation 46232. Up to 3068 conditions per place. [2024-01-31 16:08:12,075 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 501 selfloop transitions, 127 changer transitions 8/660 dead transitions. [2024-01-31 16:08:12,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 660 transitions, 15691 flow [2024-01-31 16:08:12,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:08:12,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:08:12,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 330 transitions. [2024-01-31 16:08:12,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520547945205479 [2024-01-31 16:08:12,077 INFO L175 Difference]: Start difference. First operand has 441 places, 572 transitions, 13355 flow. Second operand 10 states and 330 transitions. [2024-01-31 16:08:12,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 660 transitions, 15691 flow [2024-01-31 16:08:13,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 660 transitions, 15392 flow, removed 4 selfloop flow, removed 21 redundant places. [2024-01-31 16:08:13,160 INFO L231 Difference]: Finished difference. Result has 430 places, 566 transitions, 13235 flow [2024-01-31 16:08:13,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=13062, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13235, PETRI_PLACES=430, PETRI_TRANSITIONS=566} [2024-01-31 16:08:13,161 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 353 predicate places. [2024-01-31 16:08:13,161 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 566 transitions, 13235 flow [2024-01-31 16:08:13,161 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) [2024-01-31 16:08:13,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:13,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:08:13,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-01-31 16:08:13,161 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:08:13,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:13,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1659206028, now seen corresponding path program 6 times [2024-01-31 16:08:13,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:13,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465802696] [2024-01-31 16:08:13,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:13,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:13,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:13,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:13,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:13,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465802696] [2024-01-31 16:08:13,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465802696] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:13,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:13,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:08:13,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389404185] [2024-01-31 16:08:13,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:13,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:08:13,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:13,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:08:13,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:08:13,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:08:13,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 566 transitions, 13235 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) [2024-01-31 16:08:13,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:13,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:08:13,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:15,510 INFO L124 PetriNetUnfolderBase]: 3561/7288 cut-off events. [2024-01-31 16:08:15,510 INFO L125 PetriNetUnfolderBase]: For 210986/211455 co-relation queries the response was YES. [2024-01-31 16:08:15,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54679 conditions, 7288 events. 3561/7288 cut-off events. For 210986/211455 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 59804 event pairs, 1074 based on Foata normal form. 65/7123 useless extension candidates. Maximal degree in co-relation 54556. Up to 3170 conditions per place. [2024-01-31 16:08:15,598 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 532 selfloop transitions, 93 changer transitions 11/674 dead transitions. [2024-01-31 16:08:15,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 674 transitions, 15694 flow [2024-01-31 16:08:15,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:08:15,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:08:15,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 333 transitions. [2024-01-31 16:08:15,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45616438356164385 [2024-01-31 16:08:15,600 INFO L175 Difference]: Start difference. First operand has 430 places, 566 transitions, 13235 flow. Second operand 10 states and 333 transitions. [2024-01-31 16:08:15,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 674 transitions, 15694 flow [2024-01-31 16:08:16,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 674 transitions, 15432 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-01-31 16:08:16,656 INFO L231 Difference]: Finished difference. Result has 432 places, 555 transitions, 12934 flow [2024-01-31 16:08:16,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12977, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12934, PETRI_PLACES=432, PETRI_TRANSITIONS=555} [2024-01-31 16:08:16,656 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 355 predicate places. [2024-01-31 16:08:16,656 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 555 transitions, 12934 flow [2024-01-31 16:08:16,656 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) [2024-01-31 16:08:16,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:16,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:08:16,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-01-31 16:08:16,657 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:08:16,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:16,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1761055624, now seen corresponding path program 7 times [2024-01-31 16:08:16,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:16,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192173778] [2024-01-31 16:08:16,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:16,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:16,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:16,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:16,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:16,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192173778] [2024-01-31 16:08:16,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192173778] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:16,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:16,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:08:16,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226513145] [2024-01-31 16:08:16,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:16,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:08:16,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:16,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:08:16,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:08:16,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:08:16,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 555 transitions, 12934 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) [2024-01-31 16:08:16,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:16,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:08:16,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:18,846 INFO L124 PetriNetUnfolderBase]: 3506/7212 cut-off events. [2024-01-31 16:08:18,846 INFO L125 PetriNetUnfolderBase]: For 208535/209012 co-relation queries the response was YES. [2024-01-31 16:08:18,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54110 conditions, 7212 events. 3506/7212 cut-off events. For 208535/209012 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 59345 event pairs, 1030 based on Foata normal form. 84/7074 useless extension candidates. Maximal degree in co-relation 53987. Up to 3170 conditions per place. [2024-01-31 16:08:18,919 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 548 selfloop transitions, 101 changer transitions 8/695 dead transitions. [2024-01-31 16:08:18,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 695 transitions, 15838 flow [2024-01-31 16:08:18,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 16:08:18,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 16:08:18,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 397 transitions. [2024-01-31 16:08:18,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4531963470319635 [2024-01-31 16:08:18,921 INFO L175 Difference]: Start difference. First operand has 432 places, 555 transitions, 12934 flow. Second operand 12 states and 397 transitions. [2024-01-31 16:08:18,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 695 transitions, 15838 flow [2024-01-31 16:08:19,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 695 transitions, 15652 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-01-31 16:08:19,883 INFO L231 Difference]: Finished difference. Result has 437 places, 548 transitions, 12823 flow [2024-01-31 16:08:19,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12748, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12823, PETRI_PLACES=437, PETRI_TRANSITIONS=548} [2024-01-31 16:08:19,884 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 360 predicate places. [2024-01-31 16:08:19,884 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 548 transitions, 12823 flow [2024-01-31 16:08:19,884 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) [2024-01-31 16:08:19,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:19,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:08:19,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-01-31 16:08:19,885 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:08:19,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:19,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1761976324, now seen corresponding path program 8 times [2024-01-31 16:08:19,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:19,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170119112] [2024-01-31 16:08:19,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:19,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:20,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:20,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:20,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170119112] [2024-01-31 16:08:20,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170119112] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:20,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:20,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:08:20,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168261250] [2024-01-31 16:08:20,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:20,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:08:20,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:20,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:08:20,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:08:20,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:08:20,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 548 transitions, 12823 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) [2024-01-31 16:08:20,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:20,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:08:20,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:22,068 INFO L124 PetriNetUnfolderBase]: 3442/7089 cut-off events. [2024-01-31 16:08:22,069 INFO L125 PetriNetUnfolderBase]: For 207684/208148 co-relation queries the response was YES. [2024-01-31 16:08:22,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53134 conditions, 7089 events. 3442/7089 cut-off events. For 207684/208148 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 58153 event pairs, 1020 based on Foata normal form. 86/6957 useless extension candidates. Maximal degree in co-relation 53010. Up to 3170 conditions per place. [2024-01-31 16:08:22,188 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 534 selfloop transitions, 99 changer transitions 13/684 dead transitions. [2024-01-31 16:08:22,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 684 transitions, 15564 flow [2024-01-31 16:08:22,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-01-31 16:08:22,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-01-31 16:08:22,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 417 transitions. [2024-01-31 16:08:22,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43940990516332984 [2024-01-31 16:08:22,189 INFO L175 Difference]: Start difference. First operand has 437 places, 548 transitions, 12823 flow. Second operand 13 states and 417 transitions. [2024-01-31 16:08:22,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 684 transitions, 15564 flow [2024-01-31 16:08:23,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 684 transitions, 15364 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-01-31 16:08:23,270 INFO L231 Difference]: Finished difference. Result has 441 places, 536 transitions, 12625 flow [2024-01-31 16:08:23,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12623, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12625, PETRI_PLACES=441, PETRI_TRANSITIONS=536} [2024-01-31 16:08:23,271 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 364 predicate places. [2024-01-31 16:08:23,271 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 536 transitions, 12625 flow [2024-01-31 16:08:23,271 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) [2024-01-31 16:08:23,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:23,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:08:23,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-01-31 16:08:23,271 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:08:23,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:23,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1135679304, now seen corresponding path program 9 times [2024-01-31 16:08:23,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:23,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286094469] [2024-01-31 16:08:23,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:23,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:23,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:23,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:23,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:23,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286094469] [2024-01-31 16:08:23,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286094469] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:23,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:23,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:08:23,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919642808] [2024-01-31 16:08:23,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:23,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:08:23,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:23,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:08:23,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:08:23,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:08:23,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 536 transitions, 12625 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) [2024-01-31 16:08:23,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:23,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:08:23,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:25,227 INFO L124 PetriNetUnfolderBase]: 3424/7091 cut-off events. [2024-01-31 16:08:25,227 INFO L125 PetriNetUnfolderBase]: For 207374/207778 co-relation queries the response was YES. [2024-01-31 16:08:25,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53200 conditions, 7091 events. 3424/7091 cut-off events. For 207374/207778 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 58424 event pairs, 1120 based on Foata normal form. 61/6920 useless extension candidates. Maximal degree in co-relation 53075. Up to 5222 conditions per place. [2024-01-31 16:08:25,313 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 509 selfloop transitions, 55 changer transitions 11/613 dead transitions. [2024-01-31 16:08:25,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 613 transitions, 14613 flow [2024-01-31 16:08:25,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:08:25,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:08:25,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 292 transitions. [2024-01-31 16:08:25,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-01-31 16:08:25,314 INFO L175 Difference]: Start difference. First operand has 441 places, 536 transitions, 12625 flow. Second operand 9 states and 292 transitions. [2024-01-31 16:08:25,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 613 transitions, 14613 flow [2024-01-31 16:08:26,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 613 transitions, 14399 flow, removed 0 selfloop flow, removed 13 redundant places. [2024-01-31 16:08:26,348 INFO L231 Difference]: Finished difference. Result has 437 places, 527 transitions, 12341 flow [2024-01-31 16:08:26,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12411, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12341, PETRI_PLACES=437, PETRI_TRANSITIONS=527} [2024-01-31 16:08:26,348 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 360 predicate places. [2024-01-31 16:08:26,348 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 527 transitions, 12341 flow [2024-01-31 16:08:26,349 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) [2024-01-31 16:08:26,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:26,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:08:26,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-01-31 16:08:26,349 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:08:26,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:26,349 INFO L85 PathProgramCache]: Analyzing trace with hash 627094416, now seen corresponding path program 10 times [2024-01-31 16:08:26,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:26,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031743188] [2024-01-31 16:08:26,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:26,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:26,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:26,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:26,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:26,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031743188] [2024-01-31 16:08:26,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031743188] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:26,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:26,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:08:26,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276379398] [2024-01-31 16:08:26,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:26,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:08:26,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:26,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:08:26,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:08:26,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:08:26,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 527 transitions, 12341 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) [2024-01-31 16:08:26,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:26,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:08:26,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:28,454 INFO L124 PetriNetUnfolderBase]: 3390/7000 cut-off events. [2024-01-31 16:08:28,454 INFO L125 PetriNetUnfolderBase]: For 198802/199208 co-relation queries the response was YES. [2024-01-31 16:08:28,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52280 conditions, 7000 events. 3390/7000 cut-off events. For 198802/199208 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 57388 event pairs, 1107 based on Foata normal form. 61/6829 useless extension candidates. Maximal degree in co-relation 52154. Up to 5222 conditions per place. [2024-01-31 16:08:28,535 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 503 selfloop transitions, 52 changer transitions 12/605 dead transitions. [2024-01-31 16:08:28,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 605 transitions, 14230 flow [2024-01-31 16:08:28,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:08:28,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:08:28,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 339 transitions. [2024-01-31 16:08:28,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42216687422166876 [2024-01-31 16:08:28,536 INFO L175 Difference]: Start difference. First operand has 437 places, 527 transitions, 12341 flow. Second operand 11 states and 339 transitions. [2024-01-31 16:08:28,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 605 transitions, 14230 flow [2024-01-31 16:08:29,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 605 transitions, 14118 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-31 16:08:29,467 INFO L231 Difference]: Finished difference. Result has 440 places, 517 transitions, 12150 flow [2024-01-31 16:08:29,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12229, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12150, PETRI_PLACES=440, PETRI_TRANSITIONS=517} [2024-01-31 16:08:29,467 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 363 predicate places. [2024-01-31 16:08:29,467 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 517 transitions, 12150 flow [2024-01-31 16:08:29,468 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) [2024-01-31 16:08:29,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:29,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:08:29,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-01-31 16:08:29,468 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:08:29,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:29,468 INFO L85 PathProgramCache]: Analyzing trace with hash -189085948, now seen corresponding path program 11 times [2024-01-31 16:08:29,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:29,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146883561] [2024-01-31 16:08:29,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:29,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:29,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:29,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:29,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:29,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146883561] [2024-01-31 16:08:29,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146883561] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:29,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:29,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:08:29,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222124138] [2024-01-31 16:08:29,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:29,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:08:29,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:29,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:08:29,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:08:29,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:08:29,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 517 transitions, 12150 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) [2024-01-31 16:08:29,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:29,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:08:29,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:31,247 INFO L124 PetriNetUnfolderBase]: 2830/6030 cut-off events. [2024-01-31 16:08:31,247 INFO L125 PetriNetUnfolderBase]: For 169782/170057 co-relation queries the response was YES. [2024-01-31 16:08:31,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43997 conditions, 6030 events. 2830/6030 cut-off events. For 169782/170057 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 49770 event pairs, 881 based on Foata normal form. 95/6067 useless extension candidates. Maximal degree in co-relation 43870. Up to 3095 conditions per place. [2024-01-31 16:08:31,316 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 389 selfloop transitions, 113 changer transitions 46/572 dead transitions. [2024-01-31 16:08:31,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 572 transitions, 13916 flow [2024-01-31 16:08:31,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:08:31,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:08:31,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 278 transitions. [2024-01-31 16:08:31,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4231354642313546 [2024-01-31 16:08:31,317 INFO L175 Difference]: Start difference. First operand has 440 places, 517 transitions, 12150 flow. Second operand 9 states and 278 transitions. [2024-01-31 16:08:31,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 572 transitions, 13916 flow [2024-01-31 16:08:32,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 572 transitions, 13519 flow, removed 0 selfloop flow, removed 29 redundant places. [2024-01-31 16:08:32,075 INFO L231 Difference]: Finished difference. Result has 416 places, 469 transitions, 10965 flow [2024-01-31 16:08:32,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11651, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10965, PETRI_PLACES=416, PETRI_TRANSITIONS=469} [2024-01-31 16:08:32,075 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 339 predicate places. [2024-01-31 16:08:32,075 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 469 transitions, 10965 flow [2024-01-31 16:08:32,076 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) [2024-01-31 16:08:32,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:32,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:08:32,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-01-31 16:08:32,076 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:08:32,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:32,076 INFO L85 PathProgramCache]: Analyzing trace with hash -961957312, now seen corresponding path program 11 times [2024-01-31 16:08:32,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:32,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181926561] [2024-01-31 16:08:32,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:32,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:32,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:32,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:32,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:32,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181926561] [2024-01-31 16:08:32,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181926561] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:32,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:32,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:08:32,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755076959] [2024-01-31 16:08:32,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:32,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:08:32,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:32,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:08:32,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:08:32,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:08:32,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 469 transitions, 10965 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) [2024-01-31 16:08:32,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:32,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:08:32,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:33,762 INFO L124 PetriNetUnfolderBase]: 3114/6467 cut-off events. [2024-01-31 16:08:33,762 INFO L125 PetriNetUnfolderBase]: For 161619/161933 co-relation queries the response was YES. [2024-01-31 16:08:33,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47007 conditions, 6467 events. 3114/6467 cut-off events. For 161619/161933 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 52146 event pairs, 796 based on Foata normal form. 26/6291 useless extension candidates. Maximal degree in co-relation 46899. Up to 3782 conditions per place. [2024-01-31 16:08:33,837 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 352 selfloop transitions, 118 changer transitions 13/517 dead transitions. [2024-01-31 16:08:33,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 517 transitions, 12337 flow [2024-01-31 16:08:33,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:08:33,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:08:33,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 261 transitions. [2024-01-31 16:08:33,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4469178082191781 [2024-01-31 16:08:33,838 INFO L175 Difference]: Start difference. First operand has 416 places, 469 transitions, 10965 flow. Second operand 8 states and 261 transitions. [2024-01-31 16:08:33,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 517 transitions, 12337 flow [2024-01-31 16:08:34,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 517 transitions, 12129 flow, removed 0 selfloop flow, removed 13 redundant places. [2024-01-31 16:08:34,594 INFO L231 Difference]: Finished difference. Result has 411 places, 456 transitions, 10764 flow [2024-01-31 16:08:34,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10757, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10764, PETRI_PLACES=411, PETRI_TRANSITIONS=456} [2024-01-31 16:08:34,594 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 334 predicate places. [2024-01-31 16:08:34,595 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 456 transitions, 10764 flow [2024-01-31 16:08:34,595 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) [2024-01-31 16:08:34,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:34,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:08:34,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-01-31 16:08:34,595 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:08:34,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:34,596 INFO L85 PathProgramCache]: Analyzing trace with hash 874066804, now seen corresponding path program 12 times [2024-01-31 16:08:34,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:34,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201814503] [2024-01-31 16:08:34,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:34,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:34,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:34,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:34,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:34,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201814503] [2024-01-31 16:08:34,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201814503] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:34,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:34,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:08:34,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813411381] [2024-01-31 16:08:34,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:34,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:08:34,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:34,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:08:34,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:08:34,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:08:34,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 456 transitions, 10764 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) [2024-01-31 16:08:34,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:34,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:08:34,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:36,482 INFO L124 PetriNetUnfolderBase]: 3067/6356 cut-off events. [2024-01-31 16:08:36,483 INFO L125 PetriNetUnfolderBase]: For 159208/159553 co-relation queries the response was YES. [2024-01-31 16:08:36,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46599 conditions, 6356 events. 3067/6356 cut-off events. For 159208/159553 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 50848 event pairs, 697 based on Foata normal form. 88/6271 useless extension candidates. Maximal degree in co-relation 46490. Up to 2307 conditions per place. [2024-01-31 16:08:36,558 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 354 selfloop transitions, 140 changer transitions 8/536 dead transitions. [2024-01-31 16:08:36,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 536 transitions, 12599 flow [2024-01-31 16:08:36,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:08:36,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:08:36,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 325 transitions. [2024-01-31 16:08:36,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4452054794520548 [2024-01-31 16:08:36,573 INFO L175 Difference]: Start difference. First operand has 411 places, 456 transitions, 10764 flow. Second operand 10 states and 325 transitions. [2024-01-31 16:08:36,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 536 transitions, 12599 flow [2024-01-31 16:08:37,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 536 transitions, 12090 flow, removed 18 selfloop flow, removed 15 redundant places. [2024-01-31 16:08:37,448 INFO L231 Difference]: Finished difference. Result has 406 places, 449 transitions, 10464 flow [2024-01-31 16:08:37,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10275, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10464, PETRI_PLACES=406, PETRI_TRANSITIONS=449} [2024-01-31 16:08:37,449 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 329 predicate places. [2024-01-31 16:08:37,449 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 449 transitions, 10464 flow [2024-01-31 16:08:37,449 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) [2024-01-31 16:08:37,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:37,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:08:37,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-01-31 16:08:37,449 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:08:37,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:37,450 INFO L85 PathProgramCache]: Analyzing trace with hash -115475604, now seen corresponding path program 13 times [2024-01-31 16:08:37,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:37,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062025234] [2024-01-31 16:08:37,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:37,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:37,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:37,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:37,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:37,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062025234] [2024-01-31 16:08:37,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062025234] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:37,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:37,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:08:37,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764980063] [2024-01-31 16:08:37,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:37,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:08:37,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:37,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:08:37,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:08:37,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:08:37,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 449 transitions, 10464 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) [2024-01-31 16:08:37,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:37,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:08:37,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:39,146 INFO L124 PetriNetUnfolderBase]: 3046/6398 cut-off events. [2024-01-31 16:08:39,146 INFO L125 PetriNetUnfolderBase]: For 153544/153896 co-relation queries the response was YES. [2024-01-31 16:08:39,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46373 conditions, 6398 events. 3046/6398 cut-off events. For 153544/153896 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 51894 event pairs, 1018 based on Foata normal form. 68/6278 useless extension candidates. Maximal degree in co-relation 46267. Up to 4102 conditions per place. [2024-01-31 16:08:39,225 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 392 selfloop transitions, 73 changer transitions 11/510 dead transitions. [2024-01-31 16:08:39,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 510 transitions, 12041 flow [2024-01-31 16:08:39,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:08:39,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:08:39,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 254 transitions. [2024-01-31 16:08:39,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4349315068493151 [2024-01-31 16:08:39,227 INFO L175 Difference]: Start difference. First operand has 406 places, 449 transitions, 10464 flow. Second operand 8 states and 254 transitions. [2024-01-31 16:08:39,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 510 transitions, 12041 flow [2024-01-31 16:08:39,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 510 transitions, 11636 flow, removed 18 selfloop flow, removed 12 redundant places. [2024-01-31 16:08:39,994 INFO L231 Difference]: Finished difference. Result has 402 places, 440 transitions, 10056 flow [2024-01-31 16:08:39,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10071, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10056, PETRI_PLACES=402, PETRI_TRANSITIONS=440} [2024-01-31 16:08:39,994 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 325 predicate places. [2024-01-31 16:08:39,995 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 440 transitions, 10056 flow [2024-01-31 16:08:39,995 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) [2024-01-31 16:08:39,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:39,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:08:39,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-01-31 16:08:39,995 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:08:39,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:39,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1946928380, now seen corresponding path program 14 times [2024-01-31 16:08:39,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:39,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957525604] [2024-01-31 16:08:39,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:39,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:40,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:40,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:40,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:40,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957525604] [2024-01-31 16:08:40,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957525604] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:40,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:40,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:08:40,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070431071] [2024-01-31 16:08:40,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:40,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:08:40,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:40,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:08:40,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:08:40,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:08:40,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 440 transitions, 10056 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) [2024-01-31 16:08:40,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:40,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:08:40,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:41,623 INFO L124 PetriNetUnfolderBase]: 2957/6264 cut-off events. [2024-01-31 16:08:41,623 INFO L125 PetriNetUnfolderBase]: For 137482/137797 co-relation queries the response was YES. [2024-01-31 16:08:41,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44428 conditions, 6264 events. 2957/6264 cut-off events. For 137482/137797 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 50783 event pairs, 739 based on Foata normal form. 50/6137 useless extension candidates. Maximal degree in co-relation 44325. Up to 2370 conditions per place. [2024-01-31 16:08:41,685 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 329 selfloop transitions, 139 changer transitions 15/516 dead transitions. [2024-01-31 16:08:41,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 516 transitions, 11678 flow [2024-01-31 16:08:41,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:08:41,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:08:41,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 345 transitions. [2024-01-31 16:08:41,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42963885429638854 [2024-01-31 16:08:41,713 INFO L175 Difference]: Start difference. First operand has 402 places, 440 transitions, 10056 flow. Second operand 11 states and 345 transitions. [2024-01-31 16:08:41,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 516 transitions, 11678 flow [2024-01-31 16:08:42,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 516 transitions, 11514 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-01-31 16:08:42,314 INFO L231 Difference]: Finished difference. Result has 405 places, 426 transitions, 9961 flow [2024-01-31 16:08:42,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9892, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9961, PETRI_PLACES=405, PETRI_TRANSITIONS=426} [2024-01-31 16:08:42,315 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 328 predicate places. [2024-01-31 16:08:42,315 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 426 transitions, 9961 flow [2024-01-31 16:08:42,315 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) [2024-01-31 16:08:42,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:42,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:08:42,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-01-31 16:08:42,315 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:08:42,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:42,316 INFO L85 PathProgramCache]: Analyzing trace with hash -114554904, now seen corresponding path program 15 times [2024-01-31 16:08:42,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:42,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561968962] [2024-01-31 16:08:42,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:42,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:42,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:42,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:42,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:42,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561968962] [2024-01-31 16:08:42,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561968962] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:42,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:42,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:08:42,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424861534] [2024-01-31 16:08:42,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:42,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:08:42,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:42,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:08:42,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:08:42,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:08:42,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 426 transitions, 9961 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) [2024-01-31 16:08:42,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:42,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:08:42,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:43,890 INFO L124 PetriNetUnfolderBase]: 2946/6255 cut-off events. [2024-01-31 16:08:43,891 INFO L125 PetriNetUnfolderBase]: For 139233/139574 co-relation queries the response was YES. [2024-01-31 16:08:43,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44976 conditions, 6255 events. 2946/6255 cut-off events. For 139233/139574 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 50877 event pairs, 1018 based on Foata normal form. 72/6148 useless extension candidates. Maximal degree in co-relation 44873. Up to 3996 conditions per place. [2024-01-31 16:08:43,960 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 392 selfloop transitions, 56 changer transitions 15/496 dead transitions. [2024-01-31 16:08:43,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 496 transitions, 11574 flow [2024-01-31 16:08:43,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:08:43,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:08:43,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 262 transitions. [2024-01-31 16:08:43,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486301369863014 [2024-01-31 16:08:43,961 INFO L175 Difference]: Start difference. First operand has 405 places, 426 transitions, 9961 flow. Second operand 8 states and 262 transitions. [2024-01-31 16:08:43,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 496 transitions, 11574 flow [2024-01-31 16:08:44,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 496 transitions, 11166 flow, removed 15 selfloop flow, removed 21 redundant places. [2024-01-31 16:08:44,581 INFO L231 Difference]: Finished difference. Result has 392 places, 414 transitions, 9468 flow [2024-01-31 16:08:44,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9569, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9468, PETRI_PLACES=392, PETRI_TRANSITIONS=414} [2024-01-31 16:08:44,582 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 315 predicate places. [2024-01-31 16:08:44,582 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 414 transitions, 9468 flow [2024-01-31 16:08:44,582 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) [2024-01-31 16:08:44,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:44,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:08:44,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-01-31 16:08:44,583 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:08:44,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:44,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1527640186, now seen corresponding path program 16 times [2024-01-31 16:08:44,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:44,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390113952] [2024-01-31 16:08:44,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:44,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:44,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:44,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:44,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:44,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390113952] [2024-01-31 16:08:44,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390113952] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:44,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:44,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:08:44,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765340065] [2024-01-31 16:08:44,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:44,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:08:44,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:44,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:08:44,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:08:44,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:08:44,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 414 transitions, 9468 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) [2024-01-31 16:08:44,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:44,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:08:44,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:46,093 INFO L124 PetriNetUnfolderBase]: 2882/6147 cut-off events. [2024-01-31 16:08:46,093 INFO L125 PetriNetUnfolderBase]: For 123685/123982 co-relation queries the response was YES. [2024-01-31 16:08:46,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43203 conditions, 6147 events. 2882/6147 cut-off events. For 123685/123982 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 49892 event pairs, 809 based on Foata normal form. 21/5991 useless extension candidates. Maximal degree in co-relation 43105. Up to 2676 conditions per place. [2024-01-31 16:08:46,153 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 282 selfloop transitions, 137 changer transitions 13/463 dead transitions. [2024-01-31 16:08:46,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 463 transitions, 10753 flow [2024-01-31 16:08:46,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:08:46,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:08:46,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 234 transitions. [2024-01-31 16:08:46,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45792563600782776 [2024-01-31 16:08:46,154 INFO L175 Difference]: Start difference. First operand has 392 places, 414 transitions, 9468 flow. Second operand 7 states and 234 transitions. [2024-01-31 16:08:46,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 463 transitions, 10753 flow [2024-01-31 16:08:46,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 463 transitions, 10621 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-01-31 16:08:46,712 INFO L231 Difference]: Finished difference. Result has 390 places, 402 transitions, 9474 flow [2024-01-31 16:08:46,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9336, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9474, PETRI_PLACES=390, PETRI_TRANSITIONS=402} [2024-01-31 16:08:46,713 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 313 predicate places. [2024-01-31 16:08:46,713 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 402 transitions, 9474 flow [2024-01-31 16:08:46,713 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) [2024-01-31 16:08:46,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:46,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:08:46,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-01-31 16:08:46,713 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:08:46,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:46,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1330602984, now seen corresponding path program 17 times [2024-01-31 16:08:46,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:46,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306157955] [2024-01-31 16:08:46,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:46,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:46,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:46,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:46,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:46,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306157955] [2024-01-31 16:08:46,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306157955] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:46,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:46,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:08:46,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025987912] [2024-01-31 16:08:46,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:46,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:08:46,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:46,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:08:46,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:08:47,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:08:47,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 402 transitions, 9474 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) [2024-01-31 16:08:47,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:47,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:08:47,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:48,271 INFO L124 PetriNetUnfolderBase]: 2818/6002 cut-off events. [2024-01-31 16:08:48,272 INFO L125 PetriNetUnfolderBase]: For 128996/129321 co-relation queries the response was YES. [2024-01-31 16:08:48,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42661 conditions, 6002 events. 2818/6002 cut-off events. For 128996/129321 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 48421 event pairs, 974 based on Foata normal form. 64/5897 useless extension candidates. Maximal degree in co-relation 42563. Up to 3874 conditions per place. [2024-01-31 16:08:48,336 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 376 selfloop transitions, 48 changer transitions 17/472 dead transitions. [2024-01-31 16:08:48,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 472 transitions, 10950 flow [2024-01-31 16:08:48,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:08:48,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:08:48,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 308 transitions. [2024-01-31 16:08:48,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42191780821917807 [2024-01-31 16:08:48,337 INFO L175 Difference]: Start difference. First operand has 390 places, 402 transitions, 9474 flow. Second operand 10 states and 308 transitions. [2024-01-31 16:08:48,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 472 transitions, 10950 flow [2024-01-31 16:08:48,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 472 transitions, 10334 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-01-31 16:08:48,865 INFO L231 Difference]: Finished difference. Result has 390 places, 387 transitions, 8715 flow [2024-01-31 16:08:48,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8862, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8715, PETRI_PLACES=390, PETRI_TRANSITIONS=387} [2024-01-31 16:08:48,866 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 313 predicate places. [2024-01-31 16:08:48,866 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 387 transitions, 8715 flow [2024-01-31 16:08:48,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:08:48,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:48,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:08:48,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-01-31 16:08:48,867 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:08:48,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:48,867 INFO L85 PathProgramCache]: Analyzing trace with hash -318383308, now seen corresponding path program 18 times [2024-01-31 16:08:48,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:48,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611952384] [2024-01-31 16:08:48,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:48,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:48,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:49,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:49,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:49,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611952384] [2024-01-31 16:08:49,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611952384] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:49,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:49,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:08:49,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243346207] [2024-01-31 16:08:49,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:49,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:08:49,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:49,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:08:49,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:08:49,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:08:49,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 387 transitions, 8715 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) [2024-01-31 16:08:49,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:49,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:08:49,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:50,460 INFO L124 PetriNetUnfolderBase]: 2792/6016 cut-off events. [2024-01-31 16:08:50,460 INFO L125 PetriNetUnfolderBase]: For 110770/111050 co-relation queries the response was YES. [2024-01-31 16:08:50,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40791 conditions, 6016 events. 2792/6016 cut-off events. For 110770/111050 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 48912 event pairs, 814 based on Foata normal form. 28/5875 useless extension candidates. Maximal degree in co-relation 40696. Up to 2676 conditions per place. [2024-01-31 16:08:50,520 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 297 selfloop transitions, 101 changer transitions 17/444 dead transitions. [2024-01-31 16:08:50,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 444 transitions, 10035 flow [2024-01-31 16:08:50,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:08:50,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:08:50,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 238 transitions. [2024-01-31 16:08:50,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4657534246575342 [2024-01-31 16:08:50,521 INFO L175 Difference]: Start difference. First operand has 390 places, 387 transitions, 8715 flow. Second operand 7 states and 238 transitions. [2024-01-31 16:08:50,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 444 transitions, 10035 flow [2024-01-31 16:08:50,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 444 transitions, 9883 flow, removed 2 selfloop flow, removed 15 redundant places. [2024-01-31 16:08:50,972 INFO L231 Difference]: Finished difference. Result has 382 places, 371 transitions, 8545 flow [2024-01-31 16:08:50,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8563, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8545, PETRI_PLACES=382, PETRI_TRANSITIONS=371} [2024-01-31 16:08:50,973 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 305 predicate places. [2024-01-31 16:08:50,973 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 371 transitions, 8545 flow [2024-01-31 16:08:50,973 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) [2024-01-31 16:08:50,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:50,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:08:50,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-01-31 16:08:50,974 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:08:50,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:50,974 INFO L85 PathProgramCache]: Analyzing trace with hash 709406192, now seen corresponding path program 19 times [2024-01-31 16:08:50,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:50,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122746635] [2024-01-31 16:08:50,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:50,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:50,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:51,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:51,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:51,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122746635] [2024-01-31 16:08:51,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122746635] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:51,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:51,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:08:51,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174895731] [2024-01-31 16:08:51,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:51,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:08:51,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:51,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:08:51,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:08:51,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:08:51,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 371 transitions, 8545 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) [2024-01-31 16:08:51,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:51,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:08:51,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:52,594 INFO L124 PetriNetUnfolderBase]: 2762/6006 cut-off events. [2024-01-31 16:08:52,594 INFO L125 PetriNetUnfolderBase]: For 111315/111591 co-relation queries the response was YES. [2024-01-31 16:08:52,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40764 conditions, 6006 events. 2762/6006 cut-off events. For 111315/111591 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 49125 event pairs, 836 based on Foata normal form. 28/5870 useless extension candidates. Maximal degree in co-relation 40670. Up to 2676 conditions per place. [2024-01-31 16:08:52,656 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 298 selfloop transitions, 94 changer transitions 16/437 dead transitions. [2024-01-31 16:08:52,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 437 transitions, 9915 flow [2024-01-31 16:08:52,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:08:52,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:08:52,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 289 transitions. [2024-01-31 16:08:52,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398782343987823 [2024-01-31 16:08:52,657 INFO L175 Difference]: Start difference. First operand has 382 places, 371 transitions, 8545 flow. Second operand 9 states and 289 transitions. [2024-01-31 16:08:52,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 437 transitions, 9915 flow [2024-01-31 16:08:53,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 437 transitions, 9598 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-01-31 16:08:53,107 INFO L231 Difference]: Finished difference. Result has 379 places, 357 transitions, 8211 flow [2024-01-31 16:08:53,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8228, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8211, PETRI_PLACES=379, PETRI_TRANSITIONS=357} [2024-01-31 16:08:53,107 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 302 predicate places. [2024-01-31 16:08:53,107 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 357 transitions, 8211 flow [2024-01-31 16:08:53,108 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) [2024-01-31 16:08:53,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:53,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:08:53,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-01-31 16:08:53,108 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:08:53,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:53,108 INFO L85 PathProgramCache]: Analyzing trace with hash 572042966, now seen corresponding path program 20 times [2024-01-31 16:08:53,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:53,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175151147] [2024-01-31 16:08:53,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:53,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:53,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:53,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:53,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:53,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175151147] [2024-01-31 16:08:53,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175151147] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:53,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:53,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:08:53,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236763488] [2024-01-31 16:08:53,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:53,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:08:53,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:53,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:08:53,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:08:53,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:08:53,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 357 transitions, 8211 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) [2024-01-31 16:08:53,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:53,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:08:53,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:54,600 INFO L124 PetriNetUnfolderBase]: 2733/5908 cut-off events. [2024-01-31 16:08:54,600 INFO L125 PetriNetUnfolderBase]: For 107764/107997 co-relation queries the response was YES. [2024-01-31 16:08:54,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39800 conditions, 5908 events. 2733/5908 cut-off events. For 107764/107997 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 47895 event pairs, 760 based on Foata normal form. 20/5754 useless extension candidates. Maximal degree in co-relation 39709. Up to 2676 conditions per place. [2024-01-31 16:08:54,653 INFO L140 encePairwiseOnDemand]: 59/73 looper letters, 269 selfloop transitions, 96 changer transitions 23/416 dead transitions. [2024-01-31 16:08:54,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 416 transitions, 9412 flow [2024-01-31 16:08:54,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:08:54,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:08:54,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 310 transitions. [2024-01-31 16:08:54,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4246575342465753 [2024-01-31 16:08:54,655 INFO L175 Difference]: Start difference. First operand has 379 places, 357 transitions, 8211 flow. Second operand 10 states and 310 transitions. [2024-01-31 16:08:54,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 416 transitions, 9412 flow [2024-01-31 16:08:55,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 416 transitions, 8850 flow, removed 2 selfloop flow, removed 29 redundant places. [2024-01-31 16:08:55,041 INFO L231 Difference]: Finished difference. Result has 357 places, 332 transitions, 7502 flow [2024-01-31 16:08:55,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7583, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7502, PETRI_PLACES=357, PETRI_TRANSITIONS=332} [2024-01-31 16:08:55,042 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 280 predicate places. [2024-01-31 16:08:55,042 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 332 transitions, 7502 flow [2024-01-31 16:08:55,042 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) [2024-01-31 16:08:55,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:55,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:08:55,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-01-31 16:08:55,042 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:08:55,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:55,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1264401824, now seen corresponding path program 1 times [2024-01-31 16:08:55,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:55,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085823252] [2024-01-31 16:08:55,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:55,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:55,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:08:55,053 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-31 16:08:55,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:08:55,101 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-31 16:08:55,101 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-31 16:08:55,102 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (59 of 60 remaining) [2024-01-31 16:08:55,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (58 of 60 remaining) [2024-01-31 16:08:55,104 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (57 of 60 remaining) [2024-01-31 16:08:55,104 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (56 of 60 remaining) [2024-01-31 16:08:55,105 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (55 of 60 remaining) [2024-01-31 16:08:55,105 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT (54 of 60 remaining) [2024-01-31 16:08:55,105 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err5ASSERT_VIOLATIONWITNESS_INVARIANT (53 of 60 remaining) [2024-01-31 16:08:55,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err6ASSERT_VIOLATIONWITNESS_INVARIANT (52 of 60 remaining) [2024-01-31 16:08:55,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT (51 of 60 remaining) [2024-01-31 16:08:55,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err8ASSERT_VIOLATIONWITNESS_INVARIANT (50 of 60 remaining) [2024-01-31 16:08:55,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 60 remaining) [2024-01-31 16:08:55,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err10ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 60 remaining) [2024-01-31 16:08:55,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err11ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 60 remaining) [2024-01-31 16:08:55,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 60 remaining) [2024-01-31 16:08:55,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 60 remaining) [2024-01-31 16:08:55,106 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 60 remaining) [2024-01-31 16:08:55,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 60 remaining) [2024-01-31 16:08:55,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 60 remaining) [2024-01-31 16:08:55,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 60 remaining) [2024-01-31 16:08:55,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 60 remaining) [2024-01-31 16:08:55,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 60 remaining) [2024-01-31 16:08:55,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 60 remaining) [2024-01-31 16:08:55,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 60 remaining) [2024-01-31 16:08:55,107 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 60 remaining) [2024-01-31 16:08:55,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 60 remaining) [2024-01-31 16:08:55,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 60 remaining) [2024-01-31 16:08:55,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 60 remaining) [2024-01-31 16:08:55,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 60 remaining) [2024-01-31 16:08:55,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 60 remaining) [2024-01-31 16:08:55,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 60 remaining) [2024-01-31 16:08:55,108 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 60 remaining) [2024-01-31 16:08:55,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 60 remaining) [2024-01-31 16:08:55,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 60 remaining) [2024-01-31 16:08:55,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (26 of 60 remaining) [2024-01-31 16:08:55,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 60 remaining) [2024-01-31 16:08:55,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 60 remaining) [2024-01-31 16:08:55,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 60 remaining) [2024-01-31 16:08:55,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 60 remaining) [2024-01-31 16:08:55,109 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 60 remaining) [2024-01-31 16:08:55,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 60 remaining) [2024-01-31 16:08:55,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 60 remaining) [2024-01-31 16:08:55,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err5ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 60 remaining) [2024-01-31 16:08:55,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err6ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 60 remaining) [2024-01-31 16:08:55,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 60 remaining) [2024-01-31 16:08:55,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err8ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 60 remaining) [2024-01-31 16:08:55,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 60 remaining) [2024-01-31 16:08:55,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err10ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 60 remaining) [2024-01-31 16:08:55,110 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err11ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 60 remaining) [2024-01-31 16:08:55,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 60 remaining) [2024-01-31 16:08:55,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 60 remaining) [2024-01-31 16:08:55,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 60 remaining) [2024-01-31 16:08:55,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 60 remaining) [2024-01-31 16:08:55,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 60 remaining) [2024-01-31 16:08:55,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 60 remaining) [2024-01-31 16:08:55,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 60 remaining) [2024-01-31 16:08:55,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 60 remaining) [2024-01-31 16:08:55,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 60 remaining) [2024-01-31 16:08:55,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 60 remaining) [2024-01-31 16:08:55,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 60 remaining) [2024-01-31 16:08:55,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 60 remaining) [2024-01-31 16:08:55,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-01-31 16:08:55,112 INFO L445 BasicCegarLoop]: Path program histogram: [20, 20, 11, 11, 10, 10, 10, 8, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:08:55,117 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-31 16:08:55,117 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-31 16:08:55,163 INFO L503 ceAbstractionStarter]: Automizer considered 33 witness invariants [2024-01-31 16:08:55,167 INFO L504 ceAbstractionStarter]: WitnessConsidered=33 [2024-01-31 16:08:55,168 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 04:08:55 BasicIcfg [2024-01-31 16:08:55,168 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-31 16:08:55,169 INFO L158 Benchmark]: Toolchain (without parser) took 310088.60ms. Allocated memory was 216.0MB in the beginning and 3.3GB in the end (delta: 3.1GB). Free memory was 185.6MB in the beginning and 2.6GB in the end (delta: -2.4GB). Peak memory consumption was 620.9MB. Max. memory is 16.1GB. [2024-01-31 16:08:55,171 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 142.6MB. Free memory is still 93.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:08:55,171 INFO L158 Benchmark]: Witness Parser took 0.43ms. Allocated memory is still 142.6MB. Free memory is still 68.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:08:55,171 INFO L158 Benchmark]: CACSL2BoogieTranslator took 763.11ms. Allocated memory is still 216.0MB. Free memory was 185.6MB in the beginning and 117.5MB in the end (delta: 68.1MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. [2024-01-31 16:08:55,171 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.36ms. Allocated memory is still 216.0MB. Free memory was 117.5MB in the beginning and 115.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 16:08:55,171 INFO L158 Benchmark]: Boogie Preprocessor took 100.65ms. Allocated memory is still 216.0MB. Free memory was 115.4MB in the beginning and 112.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-31 16:08:55,171 INFO L158 Benchmark]: RCFGBuilder took 904.44ms. Allocated memory is still 216.0MB. Free memory was 112.2MB in the beginning and 154.3MB in the end (delta: -42.0MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2024-01-31 16:08:55,172 INFO L158 Benchmark]: TraceAbstraction took 308228.33ms. Allocated memory was 216.0MB in the beginning and 3.3GB in the end (delta: 3.1GB). Free memory was 154.3MB in the beginning and 2.6GB in the end (delta: -2.5GB). Peak memory consumption was 592.7MB. Max. memory is 16.1GB. [2024-01-31 16:08:55,172 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 142.6MB. Free memory is still 93.4MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.43ms. Allocated memory is still 142.6MB. Free memory is still 68.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 763.11ms. Allocated memory is still 216.0MB. Free memory was 185.6MB in the beginning and 117.5MB in the end (delta: 68.1MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.36ms. Allocated memory is still 216.0MB. Free memory was 117.5MB in the beginning and 115.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 100.65ms. Allocated memory is still 216.0MB. Free memory was 115.4MB in the beginning and 112.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 904.44ms. Allocated memory is still 216.0MB. Free memory was 112.2MB in the beginning and 154.3MB in the end (delta: -42.0MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. * TraceAbstraction took 308228.33ms. Allocated memory was 216.0MB in the beginning and 3.3GB in the end (delta: 3.1GB). Free memory was 154.3MB in the beginning and 2.6GB in the end (delta: -2.5GB). Peak memory consumption was 592.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 771]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L708] 0 int __unbuffered_cnt = 0; [L710] 0 int __unbuffered_p1_EAX = 0; [L712] 0 int __unbuffered_p1_EBX = 0; [L713] 0 _Bool main$tmp_guard0; [L714] 0 _Bool main$tmp_guard1; [L716] 0 int x = 0; [L718] 0 int y = 0; [L760] 0 pthread_t t2317; VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, main$tmp_guard0=0, main$tmp_guard1=0, t2317={5:0}, x=0, y=0] [L761] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_cnt],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]]]]] [L761] FCALL, FORK 0 pthread_create(&t2317, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t2317={5:0}, x=0, y=0] [L762] 0 pthread_t t2318; [L763] FCALL, FORK 0 pthread_create(&t2318, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t2317={5:0}, t2318={3:0}, x=0, y=0] [L721] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0] [L722] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EBX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] [L722] 1 y = 1 [L723] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EBX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=1] [L736] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=1] [L724] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=1] [L737] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EBX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EBX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EBX],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_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=1] [L739] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=1] [L725] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EBX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] [L725] 1 x = 1 [L726] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EBX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L727] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L728] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EBX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L740] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EBX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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 __unbuffered_p1_EBX = y [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[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EBX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EBX],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_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L742] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L743] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EBX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L744] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L745] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EBX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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_p1_EAX]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EBX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[__unbuffered_cnt]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EBX],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_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=1, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L729] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=1, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L730] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EBX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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_p1_EAX]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EBX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[__unbuffered_cnt]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EBX],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_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=2, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L765] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EBX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EBX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],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[__unbuffered_p1_EBX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],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_p1_EAX=0, __unbuffered_p1_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2317={5:0}, t2318={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_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EBX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],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[__unbuffered_p1_EBX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],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_p1_EAX=0, __unbuffered_p1_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2317={5:0}, t2318={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_EBX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],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_p1_EAX=0, __unbuffered_p1_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2317={5:0}, t2318={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: 308.0s, OverallIterations: 187, TraceHistogramMax: 1, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 264.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16453 SdHoareTripleChecker+Valid, 36.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15058 mSDsluCounter, 3457 SdHoareTripleChecker+Invalid, 30.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2894 mSDsCounter, 2545 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 54471 IncrementalHoareTripleChecker+Invalid, 57016 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2545 mSolverCounterUnsat, 563 mSDtfsCounter, 54471 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1567 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1547 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1451 ImplicationChecksByTransitivity, 17.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15953occurred in iteration=162, InterpolantAutomatonStates: 1548, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 41.2s InterpolantComputationTime, 3531 NumberOfCodeBlocks, 3531 NumberOfCodeBlocksAsserted, 187 NumberOfCheckSat, 3317 ConstructedInterpolants, 0 QuantifiedInterpolants, 84424 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 186 InterpolantComputations, 186 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-01-31 16:08:55,213 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