./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe010_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/safe010_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/safe010_tso.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/safe010_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 16:02:59,481 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:02:59,565 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:02:59,573 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:02:59,574 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:02:59,605 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:02:59,606 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:02:59,606 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:02:59,607 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:02:59,611 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:02:59,611 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:02:59,612 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:02:59,612 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:02:59,614 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:02:59,614 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:02:59,614 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:02:59,615 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:02:59,615 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:02:59,615 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:02:59,615 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:02:59,616 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:02:59,616 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:02:59,616 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:02:59,617 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:02:59,617 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:02:59,617 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:02:59,617 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:02:59,618 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:02:59,618 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:02:59,619 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:02:59,620 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:02:59,620 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:02:59,620 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:02:59,620 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:02:59,621 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:02:59,621 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:02:59,621 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:02:59,621 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:02:59,621 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:02:59,622 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:02:59,622 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:02:59,622 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:02:59,622 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:02:59,623 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:02:59,891 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:02:59,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:02:59,926 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:02:59,927 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:02:59,928 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:02:59,929 INFO L431 ainManager$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/safe010_tso.yml/witness.yml [2024-01-31 16:03:00,105 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:03:00,106 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:03:00,106 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe010_tso.i [2024-01-31 16:03:01,281 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:03:01,558 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:03:01,559 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe010_tso.i [2024-01-31 16:03:01,576 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fac86690/399cdfdad44949269fb4fd98d8af2f88/FLAG14166894f [2024-01-31 16:03:01,598 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fac86690/399cdfdad44949269fb4fd98d8af2f88 [2024-01-31 16:03:01,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:03:01,600 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:03:01,603 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:03:01,603 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:03:01,607 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:03:01,608 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:03:00" (1/2) ... [2024-01-31 16:03:01,609 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@573580df and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:03:01, skipping insertion in model container [2024-01-31 16:03:01,609 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:03:00" (1/2) ... [2024-01-31 16:03:01,610 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@21a4a92e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:03:01, skipping insertion in model container [2024-01-31 16:03:01,611 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:03:01" (2/2) ... [2024-01-31 16:03:01,611 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@573580df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:03:01, skipping insertion in model container [2024-01-31 16:03:01,611 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:03:01" (2/2) ... [2024-01-31 16:03:01,612 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:03:01,934 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 16:03:01,936 INFO L98 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 1 [2024-01-31 16:03:01,936 INFO L98 nessWitnessExtractor]: Location invariant before [L740-L740] (unsigned long )arg == 0UL [2024-01-31 16:03:01,937 INFO L98 nessWitnessExtractor]: Location invariant before [L727-L727] (unsigned long )arg == 0UL [2024-01-31 16:03:01,937 INFO L98 nessWitnessExtractor]: Location invariant before [L741-L741] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:03:01,937 INFO L98 nessWitnessExtractor]: Location invariant before [L729-L729] (((((((((((((0 <= __unbuffered_p1_EAX) && (0 <= x)) && (0 <= y)) && (1 <= __unbuffered_cnt)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:03:01,938 INFO L98 nessWitnessExtractor]: Location invariant before [L725-L725] (unsigned long )arg == 0UL [2024-01-31 16:03:01,938 INFO L98 nessWitnessExtractor]: Location invariant before [L759-L759] (((((__unbuffered_cnt == 0) && (__unbuffered_p1_EAX == 0)) && (main$tmp_guard0 == (_Bool)0)) && (main$tmp_guard1 == (_Bool)0)) && (x == 0)) && (y == 0) [2024-01-31 16:03:01,938 INFO L98 nessWitnessExtractor]: Location invariant before [L742-L742] (unsigned long )arg == 0UL [2024-01-31 16:03:01,938 INFO L98 nessWitnessExtractor]: Location invariant before [L769-L769] (((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y == 2)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1) [2024-01-31 16:03:01,938 INFO L98 nessWitnessExtractor]: Location invariant before [L728-L728] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:03:01,939 INFO L98 nessWitnessExtractor]: Location invariant before [L763-L763] ((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:03:01,939 INFO L98 nessWitnessExtractor]: Location invariant before [L723-L723] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:03:01,939 INFO L98 nessWitnessExtractor]: Location invariant before [L18-L18] ((0 <= expression) && (expression <= 1)) && (expression == 0 || expression == 1) [2024-01-31 16:03:01,939 INFO L98 nessWitnessExtractor]: Location invariant before [L730-L730] (unsigned long )arg == 0UL [2024-01-31 16:03:01,939 INFO L98 nessWitnessExtractor]: Location invariant before [L743-L743] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:03:01,939 INFO L98 nessWitnessExtractor]: Location invariant before [L737-L737] (unsigned long )arg == 0UL [2024-01-31 16:03:01,940 INFO L98 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 0 [2024-01-31 16:03:01,940 INFO L98 nessWitnessExtractor]: Location invariant before [L18-L18] expression == 0 [2024-01-31 16:03:01,940 INFO L98 nessWitnessExtractor]: Location invariant before [L738-L738] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:03:01,940 INFO L98 nessWitnessExtractor]: Location invariant before [L739-L739] ((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y == 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1) [2024-01-31 16:03:01,940 INFO L98 nessWitnessExtractor]: Location invariant before [L721-L721] ((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y == 2)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1) [2024-01-31 16:03:01,941 INFO L98 nessWitnessExtractor]: Location invariant before [L744-L744] (((((((((((((0 <= __unbuffered_p1_EAX) && (0 <= x)) && (0 <= y)) && (1 <= __unbuffered_cnt)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:03:01,941 INFO L98 nessWitnessExtractor]: Location invariant before [L724-L724] (((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (y <= 2)) && (y <= 127)) && (x == 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:03:01,941 INFO L98 nessWitnessExtractor]: Location invariant before [L745-L745] (unsigned long )arg == 0UL [2024-01-31 16:03:01,941 INFO L98 nessWitnessExtractor]: Location invariant before [L720-L720] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:03:01,941 INFO L98 nessWitnessExtractor]: Location invariant before [L736-L736] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:03:01,942 INFO L98 nessWitnessExtractor]: Location invariant before [L719-L719] (unsigned long )arg == 0UL [2024-01-31 16:03:01,942 INFO L98 nessWitnessExtractor]: Location invariant before [L764-L764] ((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:03:01,942 INFO L98 nessWitnessExtractor]: Location invariant before [L722-L722] (unsigned long )arg == 0UL [2024-01-31 16:03:01,942 INFO L98 nessWitnessExtractor]: Location invariant before [L735-L735] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:03:01,942 INFO L98 nessWitnessExtractor]: Location invariant before [L770-L770] ((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:03:01,942 INFO L98 nessWitnessExtractor]: Location invariant before [L767-L767] ((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:03:01,942 INFO L98 nessWitnessExtractor]: Location invariant before [L734-L734] (unsigned long )arg == 0UL [2024-01-31 16:03:01,943 INFO L98 nessWitnessExtractor]: Location invariant before [L726-L726] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:03:01,943 INFO L98 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 1 [2024-01-31 16:03:01,943 INFO L98 nessWitnessExtractor]: Location invariant before [L18-L18] expression == 1 [2024-01-31 16:03:01,990 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:03:02,192 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/safe010_tso.i[945,958] [2024-01-31 16:03:02,350 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:03:02,359 INFO L204 MainTranslator]: Completed pre-run Start Parsing Local [2024-01-31 16:03:02,394 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/safe010_tso.i[945,958] Start Parsing Local Start Parsing Local [2024-01-31 16:03:02,395 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 16:03:02,498 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:03:02,532 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:03:02,533 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:03:02 WrapperNode [2024-01-31 16:03:02,533 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:03:02,534 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:03:02,534 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:03:02,535 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:03:02,541 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:03:02" (1/1) ... [2024-01-31 16:03:02,574 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:03:02" (1/1) ... [2024-01-31 16:03:02,618 INFO L138 Inliner]: procedures = 175, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2024-01-31 16:03:02,621 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:03:02,623 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:03:02,623 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:03:02,624 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:03:02,636 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:03:02" (1/1) ... [2024-01-31 16:03:02,637 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:03:02" (1/1) ... [2024-01-31 16:03:02,655 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:03:02" (1/1) ... [2024-01-31 16:03:02,683 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 16:03:02,683 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:03:02" (1/1) ... [2024-01-31 16:03:02,684 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:03:02" (1/1) ... [2024-01-31 16:03:02,698 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:03:02" (1/1) ... [2024-01-31 16:03:02,708 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:03:02" (1/1) ... [2024-01-31 16:03:02,710 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:03:02" (1/1) ... [2024-01-31 16:03:02,719 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:03:02" (1/1) ... [2024-01-31 16:03:02,729 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:03:02,731 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:03:02,731 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:03:02,731 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:03:02,732 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:03:02" (1/1) ... [2024-01-31 16:03:02,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:03:02,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:03:02,765 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 16:03:02,784 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 16:03:02,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:03:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:03:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:03:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 16:03:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:03:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:03:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:03:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-31 16:03:02,809 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-31 16:03:02,809 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-31 16:03:02,809 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-31 16:03:02,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:03:02,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:03:02,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:03:02,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 16:03:02,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:03:02,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:03:02,811 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 16:03:02,928 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:03:02,929 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:03:03,425 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:03:03,426 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:03:03,686 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:03:03,687 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-31 16:03:03,689 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:03:03 BoogieIcfgContainer [2024-01-31 16:03:03,689 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:03:03,696 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:03:03,696 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:03:03,699 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:03:03,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:03:00" (1/4) ... [2024-01-31 16:03:03,700 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d786e6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:03:03, skipping insertion in model container [2024-01-31 16:03:03,701 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:03:01" (2/4) ... [2024-01-31 16:03:03,702 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d786e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:03:03, skipping insertion in model container [2024-01-31 16:03:03,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:03:02" (3/4) ... [2024-01-31 16:03:03,702 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48d786e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:03:03, skipping insertion in model container [2024-01-31 16:03:03,703 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:03:03" (4/4) ... [2024-01-31 16:03:03,704 INFO L112 eAbstractionObserver]: Analyzing ICFG safe010_tso.i [2024-01-31 16:03:03,721 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:03:03,722 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2024-01-31 16:03:03,722 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:03:03,808 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 16:03:03,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 73 transitions, 154 flow [2024-01-31 16:03:03,897 INFO L124 PetriNetUnfolderBase]: 1/71 cut-off events. [2024-01-31 16:03:03,897 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:03:03,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 71 events. 1/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 258 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 16:03:03,902 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 73 transitions, 154 flow [2024-01-31 16:03:03,906 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 71 transitions, 148 flow [2024-01-31 16:03:03,921 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:03:03,929 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;@48545ba9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:03:03,929 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-01-31 16:03:03,932 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:03:03,932 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-31 16:03:03,932 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:03:03,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:03,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-31 16:03:03,934 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 16:03:03,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:03,939 INFO L85 PathProgramCache]: Analyzing trace with hash 10082, now seen corresponding path program 1 times [2024-01-31 16:03:03,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:03,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518812610] [2024-01-31 16:03:03,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:03,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:04,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:04,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:04,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:04,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518812610] [2024-01-31 16:03:04,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518812610] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:04,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:04,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:03:04,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3428753] [2024-01-31 16:03:04,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:04,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:03:04,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:04,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:03:04,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:03:04,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 73 [2024-01-31 16:03:04,347 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 16:03:04,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:04,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 73 [2024-01-31 16:03:04,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:05,154 INFO L124 PetriNetUnfolderBase]: 1771/3871 cut-off events. [2024-01-31 16:03:05,155 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-01-31 16:03:05,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6726 conditions, 3871 events. 1771/3871 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 32849 event pairs, 1175 based on Foata normal form. 90/2404 useless extension candidates. Maximal degree in co-relation 6714. Up to 2775 conditions per place. [2024-01-31 16:03:05,194 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 40 selfloop transitions, 3 changer transitions 0/71 dead transitions. [2024-01-31 16:03:05,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 71 transitions, 237 flow [2024-01-31 16:03:05,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:03:05,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:03:05,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2024-01-31 16:03:05,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.680365296803653 [2024-01-31 16:03:05,208 INFO L175 Difference]: Start difference. First operand has 77 places, 71 transitions, 148 flow. Second operand 3 states and 149 transitions. [2024-01-31 16:03:05,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 71 transitions, 237 flow [2024-01-31 16:03:05,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 71 transitions, 234 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:03:05,215 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 147 flow [2024-01-31 16:03:05,217 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 16:03:05,220 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -8 predicate places. [2024-01-31 16:03:05,221 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 147 flow [2024-01-31 16:03:05,221 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 16:03:05,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:05,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-31 16:03:05,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:03:05,222 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:05,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:05,223 INFO L85 PathProgramCache]: Analyzing trace with hash 300751539, now seen corresponding path program 1 times [2024-01-31 16:03:05,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:05,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780891806] [2024-01-31 16:03:05,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:05,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:05,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:05,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:05,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:05,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780891806] [2024-01-31 16:03:05,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780891806] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:05,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:05,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:03:05,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370981188] [2024-01-31 16:03:05,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:05,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:03:05,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:05,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:03:05,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:03:05,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 73 [2024-01-31 16:03:05,403 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 16:03:05,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:05,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 73 [2024-01-31 16:03:05,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:06,026 INFO L124 PetriNetUnfolderBase]: 1908/4095 cut-off events. [2024-01-31 16:03:06,026 INFO L125 PetriNetUnfolderBase]: For 312/312 co-relation queries the response was YES. [2024-01-31 16:03:06,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7566 conditions, 4095 events. 1908/4095 cut-off events. For 312/312 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 34605 event pairs, 1176 based on Foata normal form. 416/3224 useless extension candidates. Maximal degree in co-relation 7553. Up to 2906 conditions per place. [2024-01-31 16:03:06,054 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 55 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2024-01-31 16:03:06,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 79 transitions, 302 flow [2024-01-31 16:03:06,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:03:06,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:03:06,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 160 transitions. [2024-01-31 16:03:06,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.547945205479452 [2024-01-31 16:03:06,057 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 147 flow. Second operand 4 states and 160 transitions. [2024-01-31 16:03:06,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 79 transitions, 302 flow [2024-01-31 16:03:06,058 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 16:03:06,060 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 138 flow [2024-01-31 16:03:06,060 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 16:03:06,061 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -11 predicate places. [2024-01-31 16:03:06,061 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 138 flow [2024-01-31 16:03:06,061 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 16:03:06,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:06,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-31 16:03:06,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:03:06,062 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:06,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:06,062 INFO L85 PathProgramCache]: Analyzing trace with hash 733363477, now seen corresponding path program 1 times [2024-01-31 16:03:06,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:06,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486268323] [2024-01-31 16:03:06,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:06,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:06,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:06,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:06,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:06,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486268323] [2024-01-31 16:03:06,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486268323] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:06,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:06,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:03:06,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327113263] [2024-01-31 16:03:06,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:06,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:03:06,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:06,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:03:06,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:03:06,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 73 [2024-01-31 16:03:06,379 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 16:03:06,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:06,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 73 [2024-01-31 16:03:06,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:07,102 INFO L124 PetriNetUnfolderBase]: 2626/5453 cut-off events. [2024-01-31 16:03:07,102 INFO L125 PetriNetUnfolderBase]: For 485/485 co-relation queries the response was YES. [2024-01-31 16:03:07,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10213 conditions, 5453 events. 2626/5453 cut-off events. For 485/485 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 45211 event pairs, 1756 based on Foata normal form. 14/3843 useless extension candidates. Maximal degree in co-relation 10199. Up to 4079 conditions per place. [2024-01-31 16:03:07,138 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 52 selfloop transitions, 5 changer transitions 0/75 dead transitions. [2024-01-31 16:03:07,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 75 transitions, 294 flow [2024-01-31 16:03:07,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:03:07,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:03:07,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 138 transitions. [2024-01-31 16:03:07,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4726027397260274 [2024-01-31 16:03:07,141 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 138 flow. Second operand 4 states and 138 transitions. [2024-01-31 16:03:07,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 75 transitions, 294 flow [2024-01-31 16:03:07,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 75 transitions, 290 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:03:07,143 INFO L231 Difference]: Finished difference. Result has 69 places, 60 transitions, 161 flow [2024-01-31 16:03:07,144 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 16:03:07,145 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -8 predicate places. [2024-01-31 16:03:07,145 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 60 transitions, 161 flow [2024-01-31 16:03:07,145 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 16:03:07,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:07,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:07,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:03:07,146 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:07,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:07,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1258639420, now seen corresponding path program 1 times [2024-01-31 16:03:07,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:07,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527268955] [2024-01-31 16:03:07,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:07,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:07,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:07,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:07,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:07,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527268955] [2024-01-31 16:03:07,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527268955] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:07,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:07,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:03:07,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077680610] [2024-01-31 16:03:07,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:07,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:03:07,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:07,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:03:07,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:03:07,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 73 [2024-01-31 16:03:07,230 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 16:03:07,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:07,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 73 [2024-01-31 16:03:07,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:07,770 INFO L124 PetriNetUnfolderBase]: 1966/3726 cut-off events. [2024-01-31 16:03:07,771 INFO L125 PetriNetUnfolderBase]: For 446/461 co-relation queries the response was YES. [2024-01-31 16:03:07,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7425 conditions, 3726 events. 1966/3726 cut-off events. For 446/461 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 28590 event pairs, 191 based on Foata normal form. 439/3166 useless extension candidates. Maximal degree in co-relation 7409. Up to 2965 conditions per place. [2024-01-31 16:03:07,798 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 61 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2024-01-31 16:03:07,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 81 transitions, 343 flow [2024-01-31 16:03:07,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:03:07,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:03:07,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 165 transitions. [2024-01-31 16:03:07,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.565068493150685 [2024-01-31 16:03:07,802 INFO L175 Difference]: Start difference. First operand has 69 places, 60 transitions, 161 flow. Second operand 4 states and 165 transitions. [2024-01-31 16:03:07,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 81 transitions, 343 flow [2024-01-31 16:03:07,806 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 16:03:07,807 INFO L231 Difference]: Finished difference. Result has 65 places, 55 transitions, 147 flow [2024-01-31 16:03:07,807 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 16:03:07,808 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -12 predicate places. [2024-01-31 16:03:07,809 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 55 transitions, 147 flow [2024-01-31 16:03:07,809 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 16:03:07,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:07,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:07,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:03:07,814 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:07,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:07,815 INFO L85 PathProgramCache]: Analyzing trace with hash 387677432, now seen corresponding path program 1 times [2024-01-31 16:03:07,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:07,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511533899] [2024-01-31 16:03:07,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:07,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:07,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:08,039 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 16:03:08,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:08,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511533899] [2024-01-31 16:03:08,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511533899] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:08,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:08,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:03:08,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371054204] [2024-01-31 16:03:08,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:08,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:03:08,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:08,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:03:08,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:03:08,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:08,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 55 transitions, 147 flow. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:08,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:08,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:08,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:08,704 INFO L124 PetriNetUnfolderBase]: 2068/4226 cut-off events. [2024-01-31 16:03:08,705 INFO L125 PetriNetUnfolderBase]: For 462/465 co-relation queries the response was YES. [2024-01-31 16:03:08,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8160 conditions, 4226 events. 2068/4226 cut-off events. For 462/465 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 32147 event pairs, 1234 based on Foata normal form. 62/3189 useless extension candidates. Maximal degree in co-relation 8145. Up to 2846 conditions per place. [2024-01-31 16:03:08,734 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 76 selfloop transitions, 11 changer transitions 0/100 dead transitions. [2024-01-31 16:03:08,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 100 transitions, 436 flow [2024-01-31 16:03:08,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:03:08,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:03:08,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 195 transitions. [2024-01-31 16:03:08,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5342465753424658 [2024-01-31 16:03:08,736 INFO L175 Difference]: Start difference. First operand has 65 places, 55 transitions, 147 flow. Second operand 5 states and 195 transitions. [2024-01-31 16:03:08,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 100 transitions, 436 flow [2024-01-31 16:03:08,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 100 transitions, 427 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:03:08,739 INFO L231 Difference]: Finished difference. Result has 70 places, 63 transitions, 224 flow [2024-01-31 16:03:08,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=224, PETRI_PLACES=70, PETRI_TRANSITIONS=63} [2024-01-31 16:03:08,740 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -7 predicate places. [2024-01-31 16:03:08,741 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 63 transitions, 224 flow [2024-01-31 16:03:08,741 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 16:03:08,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:08,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:08,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:03:08,742 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:08,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:08,742 INFO L85 PathProgramCache]: Analyzing trace with hash 363116738, now seen corresponding path program 1 times [2024-01-31 16:03:08,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:08,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676348818] [2024-01-31 16:03:08,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:08,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:08,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:08,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:08,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:08,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676348818] [2024-01-31 16:03:08,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676348818] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:08,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:08,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:03:08,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243032401] [2024-01-31 16:03:08,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:08,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:03:08,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:08,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:03:08,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:03:08,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 73 [2024-01-31 16:03:08,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 224 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 16:03:08,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:08,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 73 [2024-01-31 16:03:08,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:09,465 INFO L124 PetriNetUnfolderBase]: 2100/4144 cut-off events. [2024-01-31 16:03:09,465 INFO L125 PetriNetUnfolderBase]: For 1910/1925 co-relation queries the response was YES. [2024-01-31 16:03:09,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9026 conditions, 4144 events. 2100/4144 cut-off events. For 1910/1925 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 31331 event pairs, 1612 based on Foata normal form. 18/3189 useless extension candidates. Maximal degree in co-relation 9007. Up to 3364 conditions per place. [2024-01-31 16:03:09,487 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 53 selfloop transitions, 6 changer transitions 0/74 dead transitions. [2024-01-31 16:03:09,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 74 transitions, 374 flow [2024-01-31 16:03:09,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:03:09,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:03:09,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2024-01-31 16:03:09,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4554794520547945 [2024-01-31 16:03:09,489 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 224 flow. Second operand 4 states and 133 transitions. [2024-01-31 16:03:09,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 74 transitions, 374 flow [2024-01-31 16:03:09,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 74 transitions, 370 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-01-31 16:03:09,496 INFO L231 Difference]: Finished difference. Result has 75 places, 65 transitions, 256 flow [2024-01-31 16:03:09,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=256, PETRI_PLACES=75, PETRI_TRANSITIONS=65} [2024-01-31 16:03:09,499 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -2 predicate places. [2024-01-31 16:03:09,499 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 65 transitions, 256 flow [2024-01-31 16:03:09,500 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 16:03:09,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:09,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:09,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 16:03:09,501 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:09,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:09,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1104129861, now seen corresponding path program 1 times [2024-01-31 16:03:09,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:09,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705077635] [2024-01-31 16:03:09,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:09,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:09,787 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 16:03:09,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:09,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705077635] [2024-01-31 16:03:09,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705077635] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:09,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:09,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:03:09,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796603363] [2024-01-31 16:03:09,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:09,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:03:09,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:09,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:03:09,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:03:09,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:09,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 65 transitions, 256 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 16:03:09,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:09,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:09,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:10,406 INFO L124 PetriNetUnfolderBase]: 1825/3705 cut-off events. [2024-01-31 16:03:10,406 INFO L125 PetriNetUnfolderBase]: For 2158/2181 co-relation queries the response was YES. [2024-01-31 16:03:10,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8276 conditions, 3705 events. 1825/3705 cut-off events. For 2158/2181 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 27528 event pairs, 989 based on Foata normal form. 18/2974 useless extension candidates. Maximal degree in co-relation 8253. Up to 2835 conditions per place. [2024-01-31 16:03:10,434 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 72 selfloop transitions, 10 changer transitions 0/96 dead transitions. [2024-01-31 16:03:10,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 96 transitions, 516 flow [2024-01-31 16:03:10,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:03:10,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:03:10,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 199 transitions. [2024-01-31 16:03:10,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.454337899543379 [2024-01-31 16:03:10,436 INFO L175 Difference]: Start difference. First operand has 75 places, 65 transitions, 256 flow. Second operand 6 states and 199 transitions. [2024-01-31 16:03:10,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 96 transitions, 516 flow [2024-01-31 16:03:10,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 96 transitions, 510 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:03:10,443 INFO L231 Difference]: Finished difference. Result has 83 places, 73 transitions, 339 flow [2024-01-31 16:03:10,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=339, PETRI_PLACES=83, PETRI_TRANSITIONS=73} [2024-01-31 16:03:10,445 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 6 predicate places. [2024-01-31 16:03:10,445 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 73 transitions, 339 flow [2024-01-31 16:03:10,445 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 16:03:10,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:10,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:10,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 16:03:10,446 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:10,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:10,447 INFO L85 PathProgramCache]: Analyzing trace with hash 416815805, now seen corresponding path program 1 times [2024-01-31 16:03:10,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:10,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235390129] [2024-01-31 16:03:10,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:10,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:10,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:10,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:10,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:10,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235390129] [2024-01-31 16:03:10,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235390129] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:10,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:10,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:03:10,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761221579] [2024-01-31 16:03:10,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:10,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:03:10,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:10,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:03:10,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:03:10,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:10,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 73 transitions, 339 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 16:03:10,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:10,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:10,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:11,240 INFO L124 PetriNetUnfolderBase]: 1841/3597 cut-off events. [2024-01-31 16:03:11,241 INFO L125 PetriNetUnfolderBase]: For 3147/3159 co-relation queries the response was YES. [2024-01-31 16:03:11,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8944 conditions, 3597 events. 1841/3597 cut-off events. For 3147/3159 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 25841 event pairs, 1230 based on Foata normal form. 22/3023 useless extension candidates. Maximal degree in co-relation 8916. Up to 2579 conditions per place. [2024-01-31 16:03:11,268 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 73 selfloop transitions, 22 changer transitions 0/111 dead transitions. [2024-01-31 16:03:11,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 111 transitions, 649 flow [2024-01-31 16:03:11,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:03:11,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:03:11,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 194 transitions. [2024-01-31 16:03:11,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5315068493150685 [2024-01-31 16:03:11,270 INFO L175 Difference]: Start difference. First operand has 83 places, 73 transitions, 339 flow. Second operand 5 states and 194 transitions. [2024-01-31 16:03:11,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 111 transitions, 649 flow [2024-01-31 16:03:11,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 111 transitions, 649 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 16:03:11,277 INFO L231 Difference]: Finished difference. Result has 89 places, 83 transitions, 471 flow [2024-01-31 16:03:11,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=471, PETRI_PLACES=89, PETRI_TRANSITIONS=83} [2024-01-31 16:03:11,278 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 12 predicate places. [2024-01-31 16:03:11,278 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 83 transitions, 471 flow [2024-01-31 16:03:11,278 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 16:03:11,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:11,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:11,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 16:03:11,279 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:11,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:11,280 INFO L85 PathProgramCache]: Analyzing trace with hash -777586381, now seen corresponding path program 2 times [2024-01-31 16:03:11,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:11,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178283219] [2024-01-31 16:03:11,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:11,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:11,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:11,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:11,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:11,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178283219] [2024-01-31 16:03:11,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178283219] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:11,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:11,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:03:11,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025900979] [2024-01-31 16:03:11,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:11,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:03:11,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:11,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:03:11,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:03:11,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:11,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 83 transitions, 471 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 16:03:11,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:11,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:11,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:12,112 INFO L124 PetriNetUnfolderBase]: 1833/3582 cut-off events. [2024-01-31 16:03:12,113 INFO L125 PetriNetUnfolderBase]: For 4210/4222 co-relation queries the response was YES. [2024-01-31 16:03:12,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9860 conditions, 3582 events. 1833/3582 cut-off events. For 4210/4222 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 25791 event pairs, 1169 based on Foata normal form. 26/3101 useless extension candidates. Maximal degree in co-relation 9828. Up to 2579 conditions per place. [2024-01-31 16:03:12,145 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 72 selfloop transitions, 19 changer transitions 0/107 dead transitions. [2024-01-31 16:03:12,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 107 transitions, 757 flow [2024-01-31 16:03:12,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:03:12,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:03:12,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 181 transitions. [2024-01-31 16:03:12,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4958904109589041 [2024-01-31 16:03:12,148 INFO L175 Difference]: Start difference. First operand has 89 places, 83 transitions, 471 flow. Second operand 5 states and 181 transitions. [2024-01-31 16:03:12,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 107 transitions, 757 flow [2024-01-31 16:03:12,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 107 transitions, 717 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-01-31 16:03:12,159 INFO L231 Difference]: Finished difference. Result has 91 places, 86 transitions, 520 flow [2024-01-31 16:03:12,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=520, PETRI_PLACES=91, PETRI_TRANSITIONS=86} [2024-01-31 16:03:12,160 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 14 predicate places. [2024-01-31 16:03:12,161 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 86 transitions, 520 flow [2024-01-31 16:03:12,161 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 16:03:12,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:12,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:12,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 16:03:12,162 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:12,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:12,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1578578503, now seen corresponding path program 1 times [2024-01-31 16:03:12,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:12,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318739780] [2024-01-31 16:03:12,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:12,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:12,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:12,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:12,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318739780] [2024-01-31 16:03:12,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318739780] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:12,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:12,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:03:12,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916349716] [2024-01-31 16:03:12,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:12,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:03:12,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:12,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:03:12,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:03:12,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:03:12,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 86 transitions, 520 flow. Second operand has 6 states, 6 states have (on average 32.5) internal successors, (195), 6 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:12,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:12,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:03:12,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:12,846 INFO L124 PetriNetUnfolderBase]: 1275/2688 cut-off events. [2024-01-31 16:03:12,846 INFO L125 PetriNetUnfolderBase]: For 4167/4236 co-relation queries the response was YES. [2024-01-31 16:03:12,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7467 conditions, 2688 events. 1275/2688 cut-off events. For 4167/4236 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 20054 event pairs, 829 based on Foata normal form. 26/2281 useless extension candidates. Maximal degree in co-relation 7434. Up to 1866 conditions per place. [2024-01-31 16:03:12,872 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 54 selfloop transitions, 18 changer transitions 0/98 dead transitions. [2024-01-31 16:03:12,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 98 transitions, 706 flow [2024-01-31 16:03:12,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:03:12,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:03:12,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 178 transitions. [2024-01-31 16:03:12,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6095890410958904 [2024-01-31 16:03:12,874 INFO L175 Difference]: Start difference. First operand has 91 places, 86 transitions, 520 flow. Second operand 4 states and 178 transitions. [2024-01-31 16:03:12,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 98 transitions, 706 flow [2024-01-31 16:03:12,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 98 transitions, 694 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:03:12,884 INFO L231 Difference]: Finished difference. Result has 94 places, 86 transitions, 555 flow [2024-01-31 16:03:12,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=555, PETRI_PLACES=94, PETRI_TRANSITIONS=86} [2024-01-31 16:03:12,885 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 17 predicate places. [2024-01-31 16:03:12,885 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 86 transitions, 555 flow [2024-01-31 16:03:12,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.5) internal successors, (195), 6 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:12,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:12,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:12,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-31 16:03:12,886 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:12,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:12,886 INFO L85 PathProgramCache]: Analyzing trace with hash -805731480, now seen corresponding path program 1 times [2024-01-31 16:03:12,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:12,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468892748] [2024-01-31 16:03:12,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:12,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:12,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:13,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:13,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:13,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468892748] [2024-01-31 16:03:13,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468892748] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:13,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:13,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:03:13,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187898630] [2024-01-31 16:03:13,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:13,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:03:13,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:13,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:03:13,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:03:13,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:13,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 86 transitions, 555 flow. Second operand has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:13,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:13,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:13,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:13,645 INFO L124 PetriNetUnfolderBase]: 1723/3385 cut-off events. [2024-01-31 16:03:13,646 INFO L125 PetriNetUnfolderBase]: For 4906/4918 co-relation queries the response was YES. [2024-01-31 16:03:13,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9541 conditions, 3385 events. 1723/3385 cut-off events. For 4906/4918 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 24368 event pairs, 1125 based on Foata normal form. 42/2920 useless extension candidates. Maximal degree in co-relation 9506. Up to 2545 conditions per place. [2024-01-31 16:03:13,684 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 65 selfloop transitions, 24 changer transitions 0/105 dead transitions. [2024-01-31 16:03:13,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 105 transitions, 790 flow [2024-01-31 16:03:13,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:03:13,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:03:13,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 199 transitions. [2024-01-31 16:03:13,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.454337899543379 [2024-01-31 16:03:13,686 INFO L175 Difference]: Start difference. First operand has 94 places, 86 transitions, 555 flow. Second operand 6 states and 199 transitions. [2024-01-31 16:03:13,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 105 transitions, 790 flow [2024-01-31 16:03:13,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 105 transitions, 761 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-01-31 16:03:13,706 INFO L231 Difference]: Finished difference. Result has 98 places, 86 transitions, 587 flow [2024-01-31 16:03:13,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=92, 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=587, PETRI_PLACES=98, PETRI_TRANSITIONS=86} [2024-01-31 16:03:13,707 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 21 predicate places. [2024-01-31 16:03:13,707 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 86 transitions, 587 flow [2024-01-31 16:03:13,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:13,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:13,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:13,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-31 16:03:13,708 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:13,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:13,709 INFO L85 PathProgramCache]: Analyzing trace with hash 2035384096, now seen corresponding path program 1 times [2024-01-31 16:03:13,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:13,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433521088] [2024-01-31 16:03:13,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:13,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:13,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:13,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:13,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:13,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433521088] [2024-01-31 16:03:13,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433521088] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:13,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:13,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:03:13,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572808787] [2024-01-31 16:03:13,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:13,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:03:13,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:13,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:03:13,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:03:14,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:14,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 86 transitions, 587 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 16:03:14,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:14,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:14,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:14,459 INFO L124 PetriNetUnfolderBase]: 1733/3414 cut-off events. [2024-01-31 16:03:14,460 INFO L125 PetriNetUnfolderBase]: For 5661/5673 co-relation queries the response was YES. [2024-01-31 16:03:14,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9797 conditions, 3414 events. 1733/3414 cut-off events. For 5661/5673 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 24432 event pairs, 1112 based on Foata normal form. 18/2926 useless extension candidates. Maximal degree in co-relation 9761. Up to 2706 conditions per place. [2024-01-31 16:03:14,485 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 78 selfloop transitions, 15 changer transitions 0/109 dead transitions. [2024-01-31 16:03:14,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 109 transitions, 844 flow [2024-01-31 16:03:14,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:03:14,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:03:14,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 196 transitions. [2024-01-31 16:03:14,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4474885844748858 [2024-01-31 16:03:14,488 INFO L175 Difference]: Start difference. First operand has 98 places, 86 transitions, 587 flow. Second operand 6 states and 196 transitions. [2024-01-31 16:03:14,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 109 transitions, 844 flow [2024-01-31 16:03:14,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 109 transitions, 806 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-01-31 16:03:14,499 INFO L231 Difference]: Finished difference. Result has 101 places, 89 transitions, 608 flow [2024-01-31 16:03:14,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=608, PETRI_PLACES=101, PETRI_TRANSITIONS=89} [2024-01-31 16:03:14,500 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 24 predicate places. [2024-01-31 16:03:14,500 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 89 transitions, 608 flow [2024-01-31 16:03:14,501 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 16:03:14,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:14,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:14,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-31 16:03:14,502 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:14,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:14,502 INFO L85 PathProgramCache]: Analyzing trace with hash 228718054, now seen corresponding path program 2 times [2024-01-31 16:03:14,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:14,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14028999] [2024-01-31 16:03:14,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:14,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:14,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:14,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:14,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:14,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14028999] [2024-01-31 16:03:14,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14028999] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:14,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:14,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:03:14,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193583497] [2024-01-31 16:03:14,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:14,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:03:14,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:14,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:03:14,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:03:14,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:14,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 89 transitions, 608 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 16:03:14,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:14,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:14,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:15,256 INFO L124 PetriNetUnfolderBase]: 1743/3436 cut-off events. [2024-01-31 16:03:15,256 INFO L125 PetriNetUnfolderBase]: For 5764/5776 co-relation queries the response was YES. [2024-01-31 16:03:15,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9869 conditions, 3436 events. 1743/3436 cut-off events. For 5764/5776 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 24595 event pairs, 1112 based on Foata normal form. 18/2948 useless extension candidates. Maximal degree in co-relation 9832. Up to 2715 conditions per place. [2024-01-31 16:03:15,291 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 77 selfloop transitions, 16 changer transitions 0/109 dead transitions. [2024-01-31 16:03:15,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 109 transitions, 860 flow [2024-01-31 16:03:15,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:03:15,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:03:15,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 195 transitions. [2024-01-31 16:03:15,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4452054794520548 [2024-01-31 16:03:15,293 INFO L175 Difference]: Start difference. First operand has 101 places, 89 transitions, 608 flow. Second operand 6 states and 195 transitions. [2024-01-31 16:03:15,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 109 transitions, 860 flow [2024-01-31 16:03:15,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 109 transitions, 824 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-01-31 16:03:15,307 INFO L231 Difference]: Finished difference. Result has 103 places, 91 transitions, 625 flow [2024-01-31 16:03:15,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=625, PETRI_PLACES=103, PETRI_TRANSITIONS=91} [2024-01-31 16:03:15,308 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 26 predicate places. [2024-01-31 16:03:15,308 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 91 transitions, 625 flow [2024-01-31 16:03:15,309 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 16:03:15,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:15,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:15,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-01-31 16:03:15,309 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:15,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:15,310 INFO L85 PathProgramCache]: Analyzing trace with hash -6624976, now seen corresponding path program 3 times [2024-01-31 16:03:15,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:15,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709502683] [2024-01-31 16:03:15,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:15,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:15,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:15,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:15,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:15,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709502683] [2024-01-31 16:03:15,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709502683] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:15,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:15,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:03:15,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052947145] [2024-01-31 16:03:15,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:15,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:03:15,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:15,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:03:15,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:03:15,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:15,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 91 transitions, 625 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 16:03:15,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:15,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:15,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:16,086 INFO L124 PetriNetUnfolderBase]: 1733/3399 cut-off events. [2024-01-31 16:03:16,087 INFO L125 PetriNetUnfolderBase]: For 5791/5803 co-relation queries the response was YES. [2024-01-31 16:03:16,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9798 conditions, 3399 events. 1733/3399 cut-off events. For 5791/5803 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 24384 event pairs, 1134 based on Foata normal form. 18/2908 useless extension candidates. Maximal degree in co-relation 9760. Up to 2712 conditions per place. [2024-01-31 16:03:16,114 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 73 selfloop transitions, 17 changer transitions 0/106 dead transitions. [2024-01-31 16:03:16,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 106 transitions, 844 flow [2024-01-31 16:03:16,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:03:16,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:03:16,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 191 transitions. [2024-01-31 16:03:16,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4360730593607306 [2024-01-31 16:03:16,118 INFO L175 Difference]: Start difference. First operand has 103 places, 91 transitions, 625 flow. Second operand 6 states and 191 transitions. [2024-01-31 16:03:16,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 106 transitions, 844 flow [2024-01-31 16:03:16,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 106 transitions, 825 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-01-31 16:03:16,129 INFO L231 Difference]: Finished difference. Result has 107 places, 92 transitions, 653 flow [2024-01-31 16:03:16,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=653, PETRI_PLACES=107, PETRI_TRANSITIONS=92} [2024-01-31 16:03:16,130 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 30 predicate places. [2024-01-31 16:03:16,130 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 92 transitions, 653 flow [2024-01-31 16:03:16,131 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 16:03:16,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:16,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:16,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-01-31 16:03:16,131 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:16,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:16,132 INFO L85 PathProgramCache]: Analyzing trace with hash -5947772, now seen corresponding path program 1 times [2024-01-31 16:03:16,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:16,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867870635] [2024-01-31 16:03:16,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:16,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:16,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:16,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:16,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:16,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867870635] [2024-01-31 16:03:16,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867870635] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:16,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:16,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:03:16,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325848581] [2024-01-31 16:03:16,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:16,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:03:16,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:16,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:03:16,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:03:16,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:16,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 92 transitions, 653 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 16:03:16,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:16,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:16,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:16,858 INFO L124 PetriNetUnfolderBase]: 1882/3808 cut-off events. [2024-01-31 16:03:16,858 INFO L125 PetriNetUnfolderBase]: For 7447/7597 co-relation queries the response was YES. [2024-01-31 16:03:16,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11074 conditions, 3808 events. 1882/3808 cut-off events. For 7447/7597 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 27970 event pairs, 1232 based on Foata normal form. 24/3277 useless extension candidates. Maximal degree in co-relation 11035. Up to 2636 conditions per place. [2024-01-31 16:03:16,886 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 78 selfloop transitions, 29 changer transitions 0/126 dead transitions. [2024-01-31 16:03:16,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 126 transitions, 1058 flow [2024-01-31 16:03:16,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:03:16,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:03:16,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 204 transitions. [2024-01-31 16:03:16,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4657534246575342 [2024-01-31 16:03:16,892 INFO L175 Difference]: Start difference. First operand has 107 places, 92 transitions, 653 flow. Second operand 6 states and 204 transitions. [2024-01-31 16:03:16,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 126 transitions, 1058 flow [2024-01-31 16:03:16,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 126 transitions, 1046 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:03:16,911 INFO L231 Difference]: Finished difference. Result has 113 places, 102 transitions, 838 flow [2024-01-31 16:03:16,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=641, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=838, PETRI_PLACES=113, PETRI_TRANSITIONS=102} [2024-01-31 16:03:16,912 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 36 predicate places. [2024-01-31 16:03:16,913 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 102 transitions, 838 flow [2024-01-31 16:03:16,913 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 16:03:16,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:16,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:16,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-01-31 16:03:16,914 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:16,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:16,914 INFO L85 PathProgramCache]: Analyzing trace with hash -2048023030, now seen corresponding path program 2 times [2024-01-31 16:03:16,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:16,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464316557] [2024-01-31 16:03:16,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:16,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:16,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:17,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:17,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:17,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464316557] [2024-01-31 16:03:17,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464316557] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:17,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:17,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:03:17,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951840543] [2024-01-31 16:03:17,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:17,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:03:17,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:17,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:03:17,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:03:17,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:17,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 102 transitions, 838 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 16:03:17,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:17,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:17,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:17,756 INFO L124 PetriNetUnfolderBase]: 1894/3817 cut-off events. [2024-01-31 16:03:17,757 INFO L125 PetriNetUnfolderBase]: For 9068/9225 co-relation queries the response was YES. [2024-01-31 16:03:17,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11507 conditions, 3817 events. 1894/3817 cut-off events. For 9068/9225 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 27992 event pairs, 1226 based on Foata normal form. 27/3281 useless extension candidates. Maximal degree in co-relation 11465. Up to 2639 conditions per place. [2024-01-31 16:03:17,786 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 71 selfloop transitions, 31 changer transitions 0/121 dead transitions. [2024-01-31 16:03:17,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 121 transitions, 1118 flow [2024-01-31 16:03:17,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:03:17,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:03:17,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 174 transitions. [2024-01-31 16:03:17,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4767123287671233 [2024-01-31 16:03:17,789 INFO L175 Difference]: Start difference. First operand has 113 places, 102 transitions, 838 flow. Second operand 5 states and 174 transitions. [2024-01-31 16:03:17,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 121 transitions, 1118 flow [2024-01-31 16:03:17,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 121 transitions, 1094 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:03:17,813 INFO L231 Difference]: Finished difference. Result has 116 places, 104 transitions, 922 flow [2024-01-31 16:03:17,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=815, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=922, PETRI_PLACES=116, PETRI_TRANSITIONS=104} [2024-01-31 16:03:17,814 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 39 predicate places. [2024-01-31 16:03:17,814 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 104 transitions, 922 flow [2024-01-31 16:03:17,815 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 16:03:17,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:17,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:17,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-01-31 16:03:17,815 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:17,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:17,816 INFO L85 PathProgramCache]: Analyzing trace with hash -2047995130, now seen corresponding path program 3 times [2024-01-31 16:03:17,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:17,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259184069] [2024-01-31 16:03:17,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:17,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:18,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:18,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:18,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259184069] [2024-01-31 16:03:18,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259184069] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:18,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:18,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:03:18,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387718642] [2024-01-31 16:03:18,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:18,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:03:18,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:18,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:03:18,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:03:18,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:18,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 104 transitions, 922 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 16:03:18,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:18,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:18,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:18,648 INFO L124 PetriNetUnfolderBase]: 1910/3841 cut-off events. [2024-01-31 16:03:18,649 INFO L125 PetriNetUnfolderBase]: For 11173/11308 co-relation queries the response was YES. [2024-01-31 16:03:18,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11859 conditions, 3841 events. 1910/3841 cut-off events. For 11173/11308 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 28124 event pairs, 1296 based on Foata normal form. 29/3306 useless extension candidates. Maximal degree in co-relation 11816. Up to 2665 conditions per place. [2024-01-31 16:03:18,696 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 68 selfloop transitions, 36 changer transitions 0/123 dead transitions. [2024-01-31 16:03:18,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 123 transitions, 1224 flow [2024-01-31 16:03:18,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:03:18,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:03:18,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 172 transitions. [2024-01-31 16:03:18,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4712328767123288 [2024-01-31 16:03:18,698 INFO L175 Difference]: Start difference. First operand has 116 places, 104 transitions, 922 flow. Second operand 5 states and 172 transitions. [2024-01-31 16:03:18,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 123 transitions, 1224 flow [2024-01-31 16:03:18,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 123 transitions, 1190 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-01-31 16:03:18,722 INFO L231 Difference]: Finished difference. Result has 120 places, 109 transitions, 1045 flow [2024-01-31 16:03:18,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=892, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1045, PETRI_PLACES=120, PETRI_TRANSITIONS=109} [2024-01-31 16:03:18,723 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 43 predicate places. [2024-01-31 16:03:18,723 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 109 transitions, 1045 flow [2024-01-31 16:03:18,724 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 16:03:18,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:18,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:18,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-01-31 16:03:18,724 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 16:03:18,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:18,725 INFO L85 PathProgramCache]: Analyzing trace with hash -48428144, now seen corresponding path program 1 times [2024-01-31 16:03:18,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:18,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280480242] [2024-01-31 16:03:18,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:18,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:18,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:18,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:18,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:18,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280480242] [2024-01-31 16:03:18,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280480242] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:18,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:18,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:03:18,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225168642] [2024-01-31 16:03:18,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:18,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:03:18,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:18,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:03:18,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:03:18,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:03:18,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 109 transitions, 1045 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 16:03:18,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:18,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:03:18,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:19,388 INFO L124 PetriNetUnfolderBase]: 1420/2796 cut-off events. [2024-01-31 16:03:19,388 INFO L125 PetriNetUnfolderBase]: For 12414/12489 co-relation queries the response was YES. [2024-01-31 16:03:19,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9562 conditions, 2796 events. 1420/2796 cut-off events. For 12414/12489 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 18748 event pairs, 430 based on Foata normal form. 93/2514 useless extension candidates. Maximal degree in co-relation 9517. Up to 1372 conditions per place. [2024-01-31 16:03:19,407 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 78 selfloop transitions, 44 changer transitions 0/150 dead transitions. [2024-01-31 16:03:19,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 150 transitions, 1465 flow [2024-01-31 16:03:19,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:03:19,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:03:19,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 273 transitions. [2024-01-31 16:03:19,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6232876712328768 [2024-01-31 16:03:19,409 INFO L175 Difference]: Start difference. First operand has 120 places, 109 transitions, 1045 flow. Second operand 6 states and 273 transitions. [2024-01-31 16:03:19,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 150 transitions, 1465 flow [2024-01-31 16:03:19,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 150 transitions, 1368 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-01-31 16:03:19,435 INFO L231 Difference]: Finished difference. Result has 123 places, 116 transitions, 1127 flow [2024-01-31 16:03:19,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=948, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1127, PETRI_PLACES=123, PETRI_TRANSITIONS=116} [2024-01-31 16:03:19,435 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 46 predicate places. [2024-01-31 16:03:19,436 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 116 transitions, 1127 flow [2024-01-31 16:03:19,436 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 16:03:19,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:19,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:19,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-01-31 16:03:19,437 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:19,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:19,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1421631337, now seen corresponding path program 1 times [2024-01-31 16:03:19,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:19,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018839732] [2024-01-31 16:03:19,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:19,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:19,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:19,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:19,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:19,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018839732] [2024-01-31 16:03:19,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018839732] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:19,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:19,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:19,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61060221] [2024-01-31 16:03:19,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:19,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:19,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:19,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:19,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:19,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:19,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 116 transitions, 1127 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 16:03:19,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:19,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:19,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:20,263 INFO L124 PetriNetUnfolderBase]: 1587/3101 cut-off events. [2024-01-31 16:03:20,263 INFO L125 PetriNetUnfolderBase]: For 13541/13594 co-relation queries the response was YES. [2024-01-31 16:03:20,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11062 conditions, 3101 events. 1587/3101 cut-off events. For 13541/13594 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 20355 event pairs, 435 based on Foata normal form. 110/2954 useless extension candidates. Maximal degree in co-relation 11015. Up to 1394 conditions per place. [2024-01-31 16:03:20,283 INFO L140 encePairwiseOnDemand]: 59/73 looper letters, 96 selfloop transitions, 50 changer transitions 0/163 dead transitions. [2024-01-31 16:03:20,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 163 transitions, 1682 flow [2024-01-31 16:03:20,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:03:20,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:03:20,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 248 transitions. [2024-01-31 16:03:20,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48532289628180036 [2024-01-31 16:03:20,285 INFO L175 Difference]: Start difference. First operand has 123 places, 116 transitions, 1127 flow. Second operand 7 states and 248 transitions. [2024-01-31 16:03:20,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 163 transitions, 1682 flow [2024-01-31 16:03:20,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 163 transitions, 1647 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-01-31 16:03:20,319 INFO L231 Difference]: Finished difference. Result has 130 places, 129 transitions, 1375 flow [2024-01-31 16:03:20,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1098, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1375, PETRI_PLACES=130, PETRI_TRANSITIONS=129} [2024-01-31 16:03:20,320 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 53 predicate places. [2024-01-31 16:03:20,320 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 129 transitions, 1375 flow [2024-01-31 16:03:20,320 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 16:03:20,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:20,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:20,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-01-31 16:03:20,321 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:20,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:20,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1523113756, now seen corresponding path program 2 times [2024-01-31 16:03:20,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:20,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451084126] [2024-01-31 16:03:20,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:20,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:20,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:20,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:20,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:20,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451084126] [2024-01-31 16:03:20,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451084126] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:20,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:20,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:03:20,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769100273] [2024-01-31 16:03:20,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:20,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:03:20,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:20,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:03:20,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:03:20,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:03:20,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 129 transitions, 1375 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 16:03:20,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:20,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:03:20,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:21,034 INFO L124 PetriNetUnfolderBase]: 1343/2709 cut-off events. [2024-01-31 16:03:21,035 INFO L125 PetriNetUnfolderBase]: For 15750/15816 co-relation queries the response was YES. [2024-01-31 16:03:21,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10640 conditions, 2709 events. 1343/2709 cut-off events. For 15750/15816 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 18374 event pairs, 387 based on Foata normal form. 30/2446 useless extension candidates. Maximal degree in co-relation 10589. Up to 1362 conditions per place. [2024-01-31 16:03:21,064 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 80 selfloop transitions, 48 changer transitions 0/156 dead transitions. [2024-01-31 16:03:21,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 156 transitions, 1757 flow [2024-01-31 16:03:21,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:03:21,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:03:21,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 228 transitions. [2024-01-31 16:03:21,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6246575342465753 [2024-01-31 16:03:21,066 INFO L175 Difference]: Start difference. First operand has 130 places, 129 transitions, 1375 flow. Second operand 5 states and 228 transitions. [2024-01-31 16:03:21,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 156 transitions, 1757 flow [2024-01-31 16:03:21,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 156 transitions, 1702 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-01-31 16:03:21,102 INFO L231 Difference]: Finished difference. Result has 132 places, 129 transitions, 1441 flow [2024-01-31 16:03:21,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1320, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1441, PETRI_PLACES=132, PETRI_TRANSITIONS=129} [2024-01-31 16:03:21,103 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 55 predicate places. [2024-01-31 16:03:21,103 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 129 transitions, 1441 flow [2024-01-31 16:03:21,104 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 16:03:21,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:21,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:21,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-01-31 16:03:21,104 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:21,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:21,105 INFO L85 PathProgramCache]: Analyzing trace with hash -519212939, now seen corresponding path program 1 times [2024-01-31 16:03:21,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:21,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470811452] [2024-01-31 16:03:21,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:21,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:21,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:21,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:21,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:21,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470811452] [2024-01-31 16:03:21,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470811452] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:21,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:21,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:21,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272752871] [2024-01-31 16:03:21,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:21,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:21,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:21,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:21,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:21,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:21,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 129 transitions, 1441 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 16:03:21,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:21,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:21,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:22,040 INFO L124 PetriNetUnfolderBase]: 1721/3343 cut-off events. [2024-01-31 16:03:22,041 INFO L125 PetriNetUnfolderBase]: For 19030/19154 co-relation queries the response was YES. [2024-01-31 16:03:22,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13145 conditions, 3343 events. 1721/3343 cut-off events. For 19030/19154 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 21654 event pairs, 440 based on Foata normal form. 87/3116 useless extension candidates. Maximal degree in co-relation 13093. Up to 1637 conditions per place. [2024-01-31 16:03:22,070 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 96 selfloop transitions, 51 changer transitions 0/166 dead transitions. [2024-01-31 16:03:22,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 166 transitions, 1891 flow [2024-01-31 16:03:22,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:03:22,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:03:22,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 219 transitions. [2024-01-31 16:03:22,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-01-31 16:03:22,072 INFO L175 Difference]: Start difference. First operand has 132 places, 129 transitions, 1441 flow. Second operand 6 states and 219 transitions. [2024-01-31 16:03:22,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 166 transitions, 1891 flow [2024-01-31 16:03:22,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 166 transitions, 1791 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-01-31 16:03:22,114 INFO L231 Difference]: Finished difference. Result has 134 places, 129 transitions, 1470 flow [2024-01-31 16:03:22,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1341, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1470, PETRI_PLACES=134, PETRI_TRANSITIONS=129} [2024-01-31 16:03:22,115 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 57 predicate places. [2024-01-31 16:03:22,115 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 129 transitions, 1470 flow [2024-01-31 16:03:22,117 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 16:03:22,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:22,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:22,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-01-31 16:03:22,118 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:22,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:22,118 INFO L85 PathProgramCache]: Analyzing trace with hash 884690845, now seen corresponding path program 2 times [2024-01-31 16:03:22,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:22,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576460545] [2024-01-31 16:03:22,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:22,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:22,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:22,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:22,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:22,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576460545] [2024-01-31 16:03:22,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576460545] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:22,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:22,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:22,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702946240] [2024-01-31 16:03:22,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:22,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:22,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:22,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:22,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:22,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:22,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 129 transitions, 1470 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 16:03:22,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:22,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:22,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:22,821 INFO L124 PetriNetUnfolderBase]: 1473/2941 cut-off events. [2024-01-31 16:03:22,821 INFO L125 PetriNetUnfolderBase]: For 18127/18178 co-relation queries the response was YES. [2024-01-31 16:03:22,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11869 conditions, 2941 events. 1473/2941 cut-off events. For 18127/18178 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 19342 event pairs, 489 based on Foata normal form. 42/2729 useless extension candidates. Maximal degree in co-relation 11816. Up to 1406 conditions per place. [2024-01-31 16:03:22,840 INFO L140 encePairwiseOnDemand]: 60/73 looper letters, 101 selfloop transitions, 62 changer transitions 0/180 dead transitions. [2024-01-31 16:03:22,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 180 transitions, 2064 flow [2024-01-31 16:03:22,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:03:22,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:03:22,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 254 transitions. [2024-01-31 16:03:22,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49706457925636005 [2024-01-31 16:03:22,844 INFO L175 Difference]: Start difference. First operand has 134 places, 129 transitions, 1470 flow. Second operand 7 states and 254 transitions. [2024-01-31 16:03:22,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 180 transitions, 2064 flow [2024-01-31 16:03:22,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 180 transitions, 1953 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-31 16:03:22,884 INFO L231 Difference]: Finished difference. Result has 137 places, 138 transitions, 1602 flow [2024-01-31 16:03:22,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1369, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1602, PETRI_PLACES=137, PETRI_TRANSITIONS=138} [2024-01-31 16:03:22,884 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 60 predicate places. [2024-01-31 16:03:22,885 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 138 transitions, 1602 flow [2024-01-31 16:03:22,885 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 16:03:22,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:22,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:22,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-01-31 16:03:22,886 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:22,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:22,886 INFO L85 PathProgramCache]: Analyzing trace with hash 773747721, now seen corresponding path program 3 times [2024-01-31 16:03:22,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:22,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068609716] [2024-01-31 16:03:22,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:22,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:23,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:23,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:23,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068609716] [2024-01-31 16:03:23,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068609716] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:23,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:23,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:23,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879484291] [2024-01-31 16:03:23,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:23,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:23,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:23,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:23,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:23,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:23,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 138 transitions, 1602 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 16:03:23,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:23,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:23,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:23,713 INFO L124 PetriNetUnfolderBase]: 1597/3175 cut-off events. [2024-01-31 16:03:23,713 INFO L125 PetriNetUnfolderBase]: For 21334/21385 co-relation queries the response was YES. [2024-01-31 16:03:23,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13587 conditions, 3175 events. 1597/3175 cut-off events. For 21334/21385 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 21033 event pairs, 504 based on Foata normal form. 48/2965 useless extension candidates. Maximal degree in co-relation 13533. Up to 1463 conditions per place. [2024-01-31 16:03:23,738 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 93 selfloop transitions, 85 changer transitions 0/195 dead transitions. [2024-01-31 16:03:23,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 195 transitions, 2418 flow [2024-01-31 16:03:23,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:03:23,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:03:23,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 254 transitions. [2024-01-31 16:03:23,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49706457925636005 [2024-01-31 16:03:23,740 INFO L175 Difference]: Start difference. First operand has 137 places, 138 transitions, 1602 flow. Second operand 7 states and 254 transitions. [2024-01-31 16:03:23,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 195 transitions, 2418 flow [2024-01-31 16:03:23,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 195 transitions, 2256 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-01-31 16:03:23,791 INFO L231 Difference]: Finished difference. Result has 141 places, 162 transitions, 1998 flow [2024-01-31 16:03:23,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1480, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1998, PETRI_PLACES=141, PETRI_TRANSITIONS=162} [2024-01-31 16:03:23,792 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 64 predicate places. [2024-01-31 16:03:23,792 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 162 transitions, 1998 flow [2024-01-31 16:03:23,792 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 16:03:23,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:23,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:23,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-01-31 16:03:23,793 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:23,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:23,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1227018906, now seen corresponding path program 1 times [2024-01-31 16:03:23,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:23,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974283381] [2024-01-31 16:03:23,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:23,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:23,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:24,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:24,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:24,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974283381] [2024-01-31 16:03:24,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974283381] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:24,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:24,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:03:24,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030224792] [2024-01-31 16:03:24,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:24,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:03:24,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:24,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:03:24,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:03:24,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:03:24,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 162 transitions, 1998 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 16:03:24,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:24,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:03:24,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:24,603 INFO L124 PetriNetUnfolderBase]: 1394/2875 cut-off events. [2024-01-31 16:03:24,603 INFO L125 PetriNetUnfolderBase]: For 22820/22915 co-relation queries the response was YES. [2024-01-31 16:03:24,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13157 conditions, 2875 events. 1394/2875 cut-off events. For 22820/22915 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 19688 event pairs, 498 based on Foata normal form. 32/2656 useless extension candidates. Maximal degree in co-relation 13100. Up to 2012 conditions per place. [2024-01-31 16:03:24,642 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 137 selfloop transitions, 39 changer transitions 0/209 dead transitions. [2024-01-31 16:03:24,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 209 transitions, 2816 flow [2024-01-31 16:03:24,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:03:24,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:03:24,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 287 transitions. [2024-01-31 16:03:24,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5616438356164384 [2024-01-31 16:03:24,646 INFO L175 Difference]: Start difference. First operand has 141 places, 162 transitions, 1998 flow. Second operand 7 states and 287 transitions. [2024-01-31 16:03:24,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 209 transitions, 2816 flow [2024-01-31 16:03:24,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 209 transitions, 2737 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-01-31 16:03:24,694 INFO L231 Difference]: Finished difference. Result has 149 places, 186 transitions, 2430 flow [2024-01-31 16:03:24,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1926, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2430, PETRI_PLACES=149, PETRI_TRANSITIONS=186} [2024-01-31 16:03:24,695 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 72 predicate places. [2024-01-31 16:03:24,695 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 186 transitions, 2430 flow [2024-01-31 16:03:24,695 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 16:03:24,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:24,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:24,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-01-31 16:03:24,696 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:24,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:24,697 INFO L85 PathProgramCache]: Analyzing trace with hash -968808108, now seen corresponding path program 1 times [2024-01-31 16:03:24,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:24,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996269548] [2024-01-31 16:03:24,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:24,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:24,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:24,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:24,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:24,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996269548] [2024-01-31 16:03:24,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996269548] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:24,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:24,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:03:24,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095238004] [2024-01-31 16:03:24,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:24,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:03:24,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:24,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:03:24,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:03:24,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:03:24,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 186 transitions, 2430 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 16:03:24,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:24,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:03:24,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:25,564 INFO L124 PetriNetUnfolderBase]: 1394/2824 cut-off events. [2024-01-31 16:03:25,564 INFO L125 PetriNetUnfolderBase]: For 23567/23664 co-relation queries the response was YES. [2024-01-31 16:03:25,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13051 conditions, 2824 events. 1394/2824 cut-off events. For 23567/23664 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 19188 event pairs, 530 based on Foata normal form. 36/2591 useless extension candidates. Maximal degree in co-relation 12990. Up to 1701 conditions per place. [2024-01-31 16:03:25,590 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 160 selfloop transitions, 60 changer transitions 0/253 dead transitions. [2024-01-31 16:03:25,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 253 transitions, 3696 flow [2024-01-31 16:03:25,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:03:25,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:03:25,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 258 transitions. [2024-01-31 16:03:25,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.589041095890411 [2024-01-31 16:03:25,592 INFO L175 Difference]: Start difference. First operand has 149 places, 186 transitions, 2430 flow. Second operand 6 states and 258 transitions. [2024-01-31 16:03:25,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 253 transitions, 3696 flow [2024-01-31 16:03:25,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 253 transitions, 3686 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-01-31 16:03:25,637 INFO L231 Difference]: Finished difference. Result has 157 places, 222 transitions, 3246 flow [2024-01-31 16:03:25,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2420, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3246, PETRI_PLACES=157, PETRI_TRANSITIONS=222} [2024-01-31 16:03:25,638 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 80 predicate places. [2024-01-31 16:03:25,638 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 222 transitions, 3246 flow [2024-01-31 16:03:25,638 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 16:03:25,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:25,638 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 16:03:25,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-01-31 16:03:25,639 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:25,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:25,639 INFO L85 PathProgramCache]: Analyzing trace with hash -356767913, now seen corresponding path program 1 times [2024-01-31 16:03:25,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:25,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544099489] [2024-01-31 16:03:25,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:25,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:25,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:25,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:25,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:25,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544099489] [2024-01-31 16:03:25,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544099489] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:25,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:25,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:03:25,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049711499] [2024-01-31 16:03:25,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:25,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:03:25,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:25,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:03:25,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:03:25,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:03:25,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 222 transitions, 3246 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 16:03:25,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:25,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:03:25,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:26,497 INFO L124 PetriNetUnfolderBase]: 1474/2990 cut-off events. [2024-01-31 16:03:26,497 INFO L125 PetriNetUnfolderBase]: For 28527/28632 co-relation queries the response was YES. [2024-01-31 16:03:26,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14372 conditions, 2990 events. 1474/2990 cut-off events. For 28527/28632 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 20596 event pairs, 406 based on Foata normal form. 42/2746 useless extension candidates. Maximal degree in co-relation 14306. Up to 1452 conditions per place. [2024-01-31 16:03:26,539 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 131 selfloop transitions, 88 changer transitions 0/252 dead transitions. [2024-01-31 16:03:26,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 252 transitions, 3892 flow [2024-01-31 16:03:26,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:03:26,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:03:26,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 260 transitions. [2024-01-31 16:03:26,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.593607305936073 [2024-01-31 16:03:26,540 INFO L175 Difference]: Start difference. First operand has 157 places, 222 transitions, 3246 flow. Second operand 6 states and 260 transitions. [2024-01-31 16:03:26,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 252 transitions, 3892 flow [2024-01-31 16:03:26,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 252 transitions, 3861 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-01-31 16:03:26,584 INFO L231 Difference]: Finished difference. Result has 162 places, 224 transitions, 3414 flow [2024-01-31 16:03:26,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3215, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3414, PETRI_PLACES=162, PETRI_TRANSITIONS=224} [2024-01-31 16:03:26,585 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 85 predicate places. [2024-01-31 16:03:26,585 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 224 transitions, 3414 flow [2024-01-31 16:03:26,585 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 16:03:26,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:26,585 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 16:03:26,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-01-31 16:03:26,585 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:26,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:26,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1559178525, now seen corresponding path program 2 times [2024-01-31 16:03:26,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:26,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298942480] [2024-01-31 16:03:26,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:26,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:26,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:26,792 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 16:03:26,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:26,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298942480] [2024-01-31 16:03:26,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298942480] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:26,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:26,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:03:26,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742423137] [2024-01-31 16:03:26,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:26,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:03:26,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:26,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:03:26,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:03:26,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:03:26,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 224 transitions, 3414 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 16:03:26,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:26,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:03:26,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:27,456 INFO L124 PetriNetUnfolderBase]: 1554/3130 cut-off events. [2024-01-31 16:03:27,457 INFO L125 PetriNetUnfolderBase]: For 32351/32480 co-relation queries the response was YES. [2024-01-31 16:03:27,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15385 conditions, 3130 events. 1554/3130 cut-off events. For 32351/32480 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 21730 event pairs, 420 based on Foata normal form. 42/2886 useless extension candidates. Maximal degree in co-relation 15317. Up to 1476 conditions per place. [2024-01-31 16:03:27,490 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 129 selfloop transitions, 89 changer transitions 0/251 dead transitions. [2024-01-31 16:03:27,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 251 transitions, 4046 flow [2024-01-31 16:03:27,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:03:27,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:03:27,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 224 transitions. [2024-01-31 16:03:27,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6136986301369863 [2024-01-31 16:03:27,491 INFO L175 Difference]: Start difference. First operand has 162 places, 224 transitions, 3414 flow. Second operand 5 states and 224 transitions. [2024-01-31 16:03:27,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 251 transitions, 4046 flow [2024-01-31 16:03:27,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 251 transitions, 3928 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-01-31 16:03:27,542 INFO L231 Difference]: Finished difference. Result has 164 places, 226 transitions, 3510 flow [2024-01-31 16:03:27,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3300, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3510, PETRI_PLACES=164, PETRI_TRANSITIONS=226} [2024-01-31 16:03:27,543 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 87 predicate places. [2024-01-31 16:03:27,543 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 226 transitions, 3510 flow [2024-01-31 16:03:27,543 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 16:03:27,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:27,544 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 16:03:27,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-01-31 16:03:27,544 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:27,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:27,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1836941411, now seen corresponding path program 3 times [2024-01-31 16:03:27,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:27,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418332409] [2024-01-31 16:03:27,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:27,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:27,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:27,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:27,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:27,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418332409] [2024-01-31 16:03:27,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418332409] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:27,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:27,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:03:27,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360986508] [2024-01-31 16:03:27,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:27,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:03:27,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:27,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:03:27,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:03:27,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:03:27,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 226 transitions, 3510 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 16:03:27,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:27,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:03:27,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:28,236 INFO L124 PetriNetUnfolderBase]: 1522/3056 cut-off events. [2024-01-31 16:03:28,236 INFO L125 PetriNetUnfolderBase]: For 33199/33330 co-relation queries the response was YES. [2024-01-31 16:03:28,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15179 conditions, 3056 events. 1522/3056 cut-off events. For 33199/33330 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 21132 event pairs, 435 based on Foata normal form. 42/2785 useless extension candidates. Maximal degree in co-relation 15110. Up to 1468 conditions per place. [2024-01-31 16:03:28,264 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 123 selfloop transitions, 93 changer transitions 0/249 dead transitions. [2024-01-31 16:03:28,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 249 transitions, 4101 flow [2024-01-31 16:03:28,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:03:28,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:03:28,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 223 transitions. [2024-01-31 16:03:28,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6109589041095891 [2024-01-31 16:03:28,269 INFO L175 Difference]: Start difference. First operand has 164 places, 226 transitions, 3510 flow. Second operand 5 states and 223 transitions. [2024-01-31 16:03:28,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 249 transitions, 4101 flow [2024-01-31 16:03:28,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 249 transitions, 3996 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-01-31 16:03:28,315 INFO L231 Difference]: Finished difference. Result has 166 places, 226 transitions, 3603 flow [2024-01-31 16:03:28,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3405, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3603, PETRI_PLACES=166, PETRI_TRANSITIONS=226} [2024-01-31 16:03:28,316 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 89 predicate places. [2024-01-31 16:03:28,316 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 226 transitions, 3603 flow [2024-01-31 16:03:28,316 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 16:03:28,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:28,316 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 16:03:28,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-01-31 16:03:28,317 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:28,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:28,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1326687008, now seen corresponding path program 1 times [2024-01-31 16:03:28,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:28,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406294782] [2024-01-31 16:03:28,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:28,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:28,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:28,577 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 16:03:28,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:28,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406294782] [2024-01-31 16:03:28,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406294782] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:28,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:28,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:28,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538661053] [2024-01-31 16:03:28,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:28,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:28,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:28,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:28,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:28,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:28,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 226 transitions, 3603 flow. Second operand has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:28,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:28,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:28,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:29,255 INFO L124 PetriNetUnfolderBase]: 2080/3951 cut-off events. [2024-01-31 16:03:29,256 INFO L125 PetriNetUnfolderBase]: For 37757/37969 co-relation queries the response was YES. [2024-01-31 16:03:29,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19571 conditions, 3951 events. 2080/3951 cut-off events. For 37757/37969 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 25905 event pairs, 485 based on Foata normal form. 78/3690 useless extension candidates. Maximal degree in co-relation 19502. Up to 1768 conditions per place. [2024-01-31 16:03:29,293 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 146 selfloop transitions, 92 changer transitions 0/262 dead transitions. [2024-01-31 16:03:29,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 262 transitions, 4291 flow [2024-01-31 16:03:29,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:03:29,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:03:29,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 213 transitions. [2024-01-31 16:03:29,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4863013698630137 [2024-01-31 16:03:29,297 INFO L175 Difference]: Start difference. First operand has 166 places, 226 transitions, 3603 flow. Second operand 6 states and 213 transitions. [2024-01-31 16:03:29,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 262 transitions, 4291 flow [2024-01-31 16:03:29,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 262 transitions, 3991 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-01-31 16:03:29,373 INFO L231 Difference]: Finished difference. Result has 167 places, 226 transitions, 3505 flow [2024-01-31 16:03:29,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3303, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3505, PETRI_PLACES=167, PETRI_TRANSITIONS=226} [2024-01-31 16:03:29,374 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 90 predicate places. [2024-01-31 16:03:29,374 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 226 transitions, 3505 flow [2024-01-31 16:03:29,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:29,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:29,375 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 16:03:29,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-01-31 16:03:29,375 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:29,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:29,375 INFO L85 PathProgramCache]: Analyzing trace with hash -791785259, now seen corresponding path program 1 times [2024-01-31 16:03:29,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:29,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369386038] [2024-01-31 16:03:29,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:29,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:29,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:29,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:29,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:29,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369386038] [2024-01-31 16:03:29,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369386038] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:29,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:29,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:29,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159180207] [2024-01-31 16:03:29,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:29,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:29,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:29,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:29,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:29,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:29,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 226 transitions, 3505 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 16:03:29,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:29,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:29,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:30,251 INFO L124 PetriNetUnfolderBase]: 1680/3333 cut-off events. [2024-01-31 16:03:30,251 INFO L125 PetriNetUnfolderBase]: For 30762/30812 co-relation queries the response was YES. [2024-01-31 16:03:30,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16363 conditions, 3333 events. 1680/3333 cut-off events. For 30762/30812 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 22166 event pairs, 559 based on Foata normal form. 39/3114 useless extension candidates. Maximal degree in co-relation 16293. Up to 2442 conditions per place. [2024-01-31 16:03:30,276 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 203 selfloop transitions, 43 changer transitions 0/263 dead transitions. [2024-01-31 16:03:30,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 263 transitions, 4202 flow [2024-01-31 16:03:30,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:03:30,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:03:30,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 255 transitions. [2024-01-31 16:03:30,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4366438356164384 [2024-01-31 16:03:30,277 INFO L175 Difference]: Start difference. First operand has 167 places, 226 transitions, 3505 flow. Second operand 8 states and 255 transitions. [2024-01-31 16:03:30,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 263 transitions, 4202 flow [2024-01-31 16:03:30,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 263 transitions, 4018 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-31 16:03:30,325 INFO L231 Difference]: Finished difference. Result has 171 places, 233 transitions, 3483 flow [2024-01-31 16:03:30,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3321, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3483, PETRI_PLACES=171, PETRI_TRANSITIONS=233} [2024-01-31 16:03:30,326 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 94 predicate places. [2024-01-31 16:03:30,326 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 233 transitions, 3483 flow [2024-01-31 16:03:30,326 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 16:03:30,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:30,326 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 16:03:30,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-01-31 16:03:30,327 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:30,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:30,327 INFO L85 PathProgramCache]: Analyzing trace with hash -748075, now seen corresponding path program 2 times [2024-01-31 16:03:30,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:30,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611467662] [2024-01-31 16:03:30,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:30,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:30,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:30,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:30,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:30,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611467662] [2024-01-31 16:03:30,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611467662] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:30,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:30,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:30,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508555456] [2024-01-31 16:03:30,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:30,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:30,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:30,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:30,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:30,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:30,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 233 transitions, 3483 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 16:03:30,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:30,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:30,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:31,132 INFO L124 PetriNetUnfolderBase]: 1674/3323 cut-off events. [2024-01-31 16:03:31,132 INFO L125 PetriNetUnfolderBase]: For 28473/28523 co-relation queries the response was YES. [2024-01-31 16:03:31,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16047 conditions, 3323 events. 1674/3323 cut-off events. For 28473/28523 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 22123 event pairs, 559 based on Foata normal form. 39/3104 useless extension candidates. Maximal degree in co-relation 15975. Up to 2442 conditions per place. [2024-01-31 16:03:31,162 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 202 selfloop transitions, 45 changer transitions 0/264 dead transitions. [2024-01-31 16:03:31,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 264 transitions, 4121 flow [2024-01-31 16:03:31,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:03:31,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:03:31,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 255 transitions. [2024-01-31 16:03:31,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4366438356164384 [2024-01-31 16:03:31,164 INFO L175 Difference]: Start difference. First operand has 171 places, 233 transitions, 3483 flow. Second operand 8 states and 255 transitions. [2024-01-31 16:03:31,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 264 transitions, 4121 flow [2024-01-31 16:03:31,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 264 transitions, 4064 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-01-31 16:03:31,214 INFO L231 Difference]: Finished difference. Result has 176 places, 233 transitions, 3521 flow [2024-01-31 16:03:31,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3426, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3521, PETRI_PLACES=176, PETRI_TRANSITIONS=233} [2024-01-31 16:03:31,214 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 99 predicate places. [2024-01-31 16:03:31,214 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 233 transitions, 3521 flow [2024-01-31 16:03:31,215 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 16:03:31,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:31,215 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 16:03:31,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-01-31 16:03:31,215 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:31,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:31,215 INFO L85 PathProgramCache]: Analyzing trace with hash 355207606, now seen corresponding path program 1 times [2024-01-31 16:03:31,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:31,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420405663] [2024-01-31 16:03:31,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:31,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:31,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:31,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:31,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:31,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420405663] [2024-01-31 16:03:31,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420405663] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:31,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:31,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:31,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469104164] [2024-01-31 16:03:31,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:31,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:31,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:31,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:31,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:31,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:31,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 233 transitions, 3521 flow. Second operand has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:31,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:31,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:31,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:32,174 INFO L124 PetriNetUnfolderBase]: 1820/3499 cut-off events. [2024-01-31 16:03:32,174 INFO L125 PetriNetUnfolderBase]: For 30540/30590 co-relation queries the response was YES. [2024-01-31 16:03:32,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17247 conditions, 3499 events. 1820/3499 cut-off events. For 30540/30590 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 23302 event pairs, 468 based on Foata normal form. 59/3315 useless extension candidates. Maximal degree in co-relation 17174. Up to 1562 conditions per place. [2024-01-31 16:03:32,210 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 148 selfloop transitions, 124 changer transitions 0/289 dead transitions. [2024-01-31 16:03:32,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 289 transitions, 4479 flow [2024-01-31 16:03:32,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:03:32,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:03:32,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 255 transitions. [2024-01-31 16:03:32,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49902152641878667 [2024-01-31 16:03:32,213 INFO L175 Difference]: Start difference. First operand has 176 places, 233 transitions, 3521 flow. Second operand 7 states and 255 transitions. [2024-01-31 16:03:32,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 289 transitions, 4479 flow [2024-01-31 16:03:32,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 289 transitions, 4389 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-01-31 16:03:32,273 INFO L231 Difference]: Finished difference. Result has 179 places, 249 transitions, 3958 flow [2024-01-31 16:03:32,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3431, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3958, PETRI_PLACES=179, PETRI_TRANSITIONS=249} [2024-01-31 16:03:32,273 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 102 predicate places. [2024-01-31 16:03:32,274 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 249 transitions, 3958 flow [2024-01-31 16:03:32,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:32,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:32,274 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 16:03:32,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-01-31 16:03:32,274 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:32,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:32,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1252480736, now seen corresponding path program 2 times [2024-01-31 16:03:32,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:32,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522188925] [2024-01-31 16:03:32,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:32,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:32,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:32,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:32,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:32,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522188925] [2024-01-31 16:03:32,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522188925] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:32,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:32,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:32,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841559506] [2024-01-31 16:03:32,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:32,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:32,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:32,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:32,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:32,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:32,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 249 transitions, 3958 flow. Second operand has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:32,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:32,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:32,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:33,461 INFO L124 PetriNetUnfolderBase]: 2580/4771 cut-off events. [2024-01-31 16:03:33,461 INFO L125 PetriNetUnfolderBase]: For 48138/48439 co-relation queries the response was YES. [2024-01-31 16:03:33,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25573 conditions, 4771 events. 2580/4771 cut-off events. For 48138/48439 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 31742 event pairs, 807 based on Foata normal form. 110/4456 useless extension candidates. Maximal degree in co-relation 25497. Up to 3298 conditions per place. [2024-01-31 16:03:33,498 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 189 selfloop transitions, 77 changer transitions 0/294 dead transitions. [2024-01-31 16:03:33,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 294 transitions, 4865 flow [2024-01-31 16:03:33,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:03:33,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:03:33,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 233 transitions. [2024-01-31 16:03:33,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45596868884540115 [2024-01-31 16:03:33,499 INFO L175 Difference]: Start difference. First operand has 179 places, 249 transitions, 3958 flow. Second operand 7 states and 233 transitions. [2024-01-31 16:03:33,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 294 transitions, 4865 flow [2024-01-31 16:03:33,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 294 transitions, 4716 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-01-31 16:03:33,582 INFO L231 Difference]: Finished difference. Result has 183 places, 255 transitions, 4067 flow [2024-01-31 16:03:33,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3823, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4067, PETRI_PLACES=183, PETRI_TRANSITIONS=255} [2024-01-31 16:03:33,583 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 106 predicate places. [2024-01-31 16:03:33,583 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 255 transitions, 4067 flow [2024-01-31 16:03:33,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:33,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:33,583 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 16:03:33,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-01-31 16:03:33,584 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:33,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:33,584 INFO L85 PathProgramCache]: Analyzing trace with hash 524108949, now seen corresponding path program 3 times [2024-01-31 16:03:33,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:33,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461851431] [2024-01-31 16:03:33,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:33,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:33,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:33,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:33,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:33,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461851431] [2024-01-31 16:03:33,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461851431] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:33,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:33,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:33,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576941741] [2024-01-31 16:03:33,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:33,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:33,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:33,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:33,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:33,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:33,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 255 transitions, 4067 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 16:03:33,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:33,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:33,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:34,519 INFO L124 PetriNetUnfolderBase]: 1968/3846 cut-off events. [2024-01-31 16:03:34,519 INFO L125 PetriNetUnfolderBase]: For 40185/40247 co-relation queries the response was YES. [2024-01-31 16:03:34,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20504 conditions, 3846 events. 1968/3846 cut-off events. For 40185/40247 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 26276 event pairs, 575 based on Foata normal form. 39/3627 useless extension candidates. Maximal degree in co-relation 20427. Up to 2910 conditions per place. [2024-01-31 16:03:34,560 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 224 selfloop transitions, 44 changer transitions 0/285 dead transitions. [2024-01-31 16:03:34,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 285 transitions, 4773 flow [2024-01-31 16:03:34,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:03:34,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:03:34,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 253 transitions. [2024-01-31 16:03:34,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4332191780821918 [2024-01-31 16:03:34,564 INFO L175 Difference]: Start difference. First operand has 183 places, 255 transitions, 4067 flow. Second operand 8 states and 253 transitions. [2024-01-31 16:03:34,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 285 transitions, 4773 flow [2024-01-31 16:03:34,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 285 transitions, 4623 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-01-31 16:03:34,651 INFO L231 Difference]: Finished difference. Result has 187 places, 259 transitions, 4067 flow [2024-01-31 16:03:34,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3917, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4067, PETRI_PLACES=187, PETRI_TRANSITIONS=259} [2024-01-31 16:03:34,652 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 110 predicate places. [2024-01-31 16:03:34,652 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 259 transitions, 4067 flow [2024-01-31 16:03:34,652 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 16:03:34,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:34,652 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 16:03:34,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-01-31 16:03:34,653 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:34,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:34,653 INFO L85 PathProgramCache]: Analyzing trace with hash -2049328492, now seen corresponding path program 2 times [2024-01-31 16:03:34,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:34,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290077727] [2024-01-31 16:03:34,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:34,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:34,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:34,940 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 16:03:34,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:34,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290077727] [2024-01-31 16:03:34,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290077727] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:34,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:34,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:34,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810387181] [2024-01-31 16:03:34,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:34,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:34,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:34,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:34,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:34,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:34,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 259 transitions, 4067 flow. Second operand has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:34,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:34,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:34,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:35,687 INFO L124 PetriNetUnfolderBase]: 1800/3497 cut-off events. [2024-01-31 16:03:35,688 INFO L125 PetriNetUnfolderBase]: For 36413/36475 co-relation queries the response was YES. [2024-01-31 16:03:35,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18631 conditions, 3497 events. 1800/3497 cut-off events. For 36413/36475 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 23398 event pairs, 582 based on Foata normal form. 137/3391 useless extension candidates. Maximal degree in co-relation 18552. Up to 2234 conditions per place. [2024-01-31 16:03:35,725 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 167 selfloop transitions, 99 changer transitions 0/283 dead transitions. [2024-01-31 16:03:35,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 283 transitions, 4778 flow [2024-01-31 16:03:35,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:03:35,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:03:35,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 228 transitions. [2024-01-31 16:03:35,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4461839530332681 [2024-01-31 16:03:35,726 INFO L175 Difference]: Start difference. First operand has 187 places, 259 transitions, 4067 flow. Second operand 7 states and 228 transitions. [2024-01-31 16:03:35,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 283 transitions, 4778 flow [2024-01-31 16:03:35,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 283 transitions, 4721 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-31 16:03:35,810 INFO L231 Difference]: Finished difference. Result has 191 places, 259 transitions, 4233 flow [2024-01-31 16:03:35,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4011, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4233, PETRI_PLACES=191, PETRI_TRANSITIONS=259} [2024-01-31 16:03:35,811 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 114 predicate places. [2024-01-31 16:03:35,811 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 259 transitions, 4233 flow [2024-01-31 16:03:35,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:35,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:35,812 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 16:03:35,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-01-31 16:03:35,812 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:35,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:35,812 INFO L85 PathProgramCache]: Analyzing trace with hash 2022399179, now seen corresponding path program 4 times [2024-01-31 16:03:35,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:35,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301893272] [2024-01-31 16:03:35,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:35,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:36,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:36,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:36,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301893272] [2024-01-31 16:03:36,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301893272] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:36,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:36,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:36,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361428791] [2024-01-31 16:03:36,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:36,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:36,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:36,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:36,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:36,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:36,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 259 transitions, 4233 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 16:03:36,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:36,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:36,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:36,929 INFO L124 PetriNetUnfolderBase]: 1794/3523 cut-off events. [2024-01-31 16:03:36,929 INFO L125 PetriNetUnfolderBase]: For 39249/39311 co-relation queries the response was YES. [2024-01-31 16:03:36,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19059 conditions, 3523 events. 1794/3523 cut-off events. For 39249/39311 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 23783 event pairs, 543 based on Foata normal form. 39/3309 useless extension candidates. Maximal degree in co-relation 18979. Up to 2640 conditions per place. [2024-01-31 16:03:36,957 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 221 selfloop transitions, 47 changer transitions 0/285 dead transitions. [2024-01-31 16:03:36,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 285 transitions, 4914 flow [2024-01-31 16:03:36,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:03:36,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:03:36,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 249 transitions. [2024-01-31 16:03:36,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263698630136986 [2024-01-31 16:03:36,960 INFO L175 Difference]: Start difference. First operand has 191 places, 259 transitions, 4233 flow. Second operand 8 states and 249 transitions. [2024-01-31 16:03:36,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 285 transitions, 4914 flow [2024-01-31 16:03:37,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 285 transitions, 4734 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-31 16:03:37,025 INFO L231 Difference]: Finished difference. Result has 195 places, 263 transitions, 4214 flow [2024-01-31 16:03:37,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4054, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4214, PETRI_PLACES=195, PETRI_TRANSITIONS=263} [2024-01-31 16:03:37,026 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 118 predicate places. [2024-01-31 16:03:37,026 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 263 transitions, 4214 flow [2024-01-31 16:03:37,027 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 16:03:37,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:37,027 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 16:03:37,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-01-31 16:03:37,027 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:37,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:37,027 INFO L85 PathProgramCache]: Analyzing trace with hash 410601375, now seen corresponding path program 1 times [2024-01-31 16:03:37,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:37,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457560566] [2024-01-31 16:03:37,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:37,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:37,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:37,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:37,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:37,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457560566] [2024-01-31 16:03:37,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457560566] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:37,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:37,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:37,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457559517] [2024-01-31 16:03:37,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:37,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:37,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:37,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:37,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:37,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:37,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 263 transitions, 4214 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 16:03:37,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:37,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:37,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:38,052 INFO L124 PetriNetUnfolderBase]: 2330/4281 cut-off events. [2024-01-31 16:03:38,052 INFO L125 PetriNetUnfolderBase]: For 44833/45083 co-relation queries the response was YES. [2024-01-31 16:03:38,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23280 conditions, 4281 events. 2330/4281 cut-off events. For 44833/45083 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 27764 event pairs, 707 based on Foata normal form. 34/3924 useless extension candidates. Maximal degree in co-relation 23198. Up to 2753 conditions per place. [2024-01-31 16:03:38,099 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 228 selfloop transitions, 69 changer transitions 0/327 dead transitions. [2024-01-31 16:03:38,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 327 transitions, 5311 flow [2024-01-31 16:03:38,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:03:38,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:03:38,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 270 transitions. [2024-01-31 16:03:38,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4623287671232877 [2024-01-31 16:03:38,104 INFO L175 Difference]: Start difference. First operand has 195 places, 263 transitions, 4214 flow. Second operand 8 states and 270 transitions. [2024-01-31 16:03:38,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 327 transitions, 5311 flow [2024-01-31 16:03:38,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 327 transitions, 5253 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-01-31 16:03:38,207 INFO L231 Difference]: Finished difference. Result has 202 places, 279 transitions, 4464 flow [2024-01-31 16:03:38,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4158, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4464, PETRI_PLACES=202, PETRI_TRANSITIONS=279} [2024-01-31 16:03:38,208 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 125 predicate places. [2024-01-31 16:03:38,208 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 279 transitions, 4464 flow [2024-01-31 16:03:38,208 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 16:03:38,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:38,208 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 16:03:38,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-01-31 16:03:38,209 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:38,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:38,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1569550090, now seen corresponding path program 3 times [2024-01-31 16:03:38,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:38,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843191926] [2024-01-31 16:03:38,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:38,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:38,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:38,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:38,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:38,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843191926] [2024-01-31 16:03:38,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843191926] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:38,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:38,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:38,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380424525] [2024-01-31 16:03:38,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:38,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:38,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:38,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:38,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:38,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:38,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 279 transitions, 4464 flow. Second operand has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:38,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:38,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:38,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:39,252 INFO L124 PetriNetUnfolderBase]: 2294/4238 cut-off events. [2024-01-31 16:03:39,253 INFO L125 PetriNetUnfolderBase]: For 47242/47492 co-relation queries the response was YES. [2024-01-31 16:03:39,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23200 conditions, 4238 events. 2294/4238 cut-off events. For 47242/47492 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 27612 event pairs, 706 based on Foata normal form. 63/3915 useless extension candidates. Maximal degree in co-relation 23115. Up to 2839 conditions per place. [2024-01-31 16:03:39,296 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 185 selfloop transitions, 87 changer transitions 0/302 dead transitions. [2024-01-31 16:03:39,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 302 transitions, 5162 flow [2024-01-31 16:03:39,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:03:39,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:03:39,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 202 transitions. [2024-01-31 16:03:39,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4611872146118721 [2024-01-31 16:03:39,297 INFO L175 Difference]: Start difference. First operand has 202 places, 279 transitions, 4464 flow. Second operand 6 states and 202 transitions. [2024-01-31 16:03:39,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 302 transitions, 5162 flow [2024-01-31 16:03:39,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 302 transitions, 5074 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-01-31 16:03:39,397 INFO L231 Difference]: Finished difference. Result has 206 places, 279 transitions, 4581 flow [2024-01-31 16:03:39,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4383, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4581, PETRI_PLACES=206, PETRI_TRANSITIONS=279} [2024-01-31 16:03:39,397 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 129 predicate places. [2024-01-31 16:03:39,397 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 279 transitions, 4581 flow [2024-01-31 16:03:39,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:39,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:39,398 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 16:03:39,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-01-31 16:03:39,398 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:39,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:39,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1927348101, now seen corresponding path program 2 times [2024-01-31 16:03:39,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:39,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742942899] [2024-01-31 16:03:39,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:39,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:39,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:39,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:39,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:39,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742942899] [2024-01-31 16:03:39,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742942899] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:39,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:39,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:39,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673716364] [2024-01-31 16:03:39,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:39,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:39,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:39,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:39,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:39,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:39,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 279 transitions, 4581 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 16:03:39,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:39,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:39,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:40,383 INFO L124 PetriNetUnfolderBase]: 2277/4176 cut-off events. [2024-01-31 16:03:40,383 INFO L125 PetriNetUnfolderBase]: For 50321/50558 co-relation queries the response was YES. [2024-01-31 16:03:40,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23292 conditions, 4176 events. 2277/4176 cut-off events. For 50321/50558 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 27015 event pairs, 703 based on Foata normal form. 20/3809 useless extension candidates. Maximal degree in co-relation 23205. Up to 2662 conditions per place. [2024-01-31 16:03:40,427 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 216 selfloop transitions, 75 changer transitions 0/321 dead transitions. [2024-01-31 16:03:40,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 321 transitions, 5483 flow [2024-01-31 16:03:40,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:03:40,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:03:40,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 238 transitions. [2024-01-31 16:03:40,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4657534246575342 [2024-01-31 16:03:40,428 INFO L175 Difference]: Start difference. First operand has 206 places, 279 transitions, 4581 flow. Second operand 7 states and 238 transitions. [2024-01-31 16:03:40,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 321 transitions, 5483 flow [2024-01-31 16:03:40,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 321 transitions, 5293 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-01-31 16:03:40,534 INFO L231 Difference]: Finished difference. Result has 208 places, 282 transitions, 4591 flow [2024-01-31 16:03:40,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4403, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4591, PETRI_PLACES=208, PETRI_TRANSITIONS=282} [2024-01-31 16:03:40,535 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 131 predicate places. [2024-01-31 16:03:40,535 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 282 transitions, 4591 flow [2024-01-31 16:03:40,535 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 16:03:40,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:40,536 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 16:03:40,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-01-31 16:03:40,536 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:40,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:40,542 INFO L85 PathProgramCache]: Analyzing trace with hash 604494181, now seen corresponding path program 3 times [2024-01-31 16:03:40,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:40,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539479597] [2024-01-31 16:03:40,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:40,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:40,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:40,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:40,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:40,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539479597] [2024-01-31 16:03:40,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539479597] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:40,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:40,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:40,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974744887] [2024-01-31 16:03:40,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:40,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:40,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:40,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:40,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:40,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:40,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 282 transitions, 4591 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 16:03:40,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:40,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:40,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:41,479 INFO L124 PetriNetUnfolderBase]: 2307/4233 cut-off events. [2024-01-31 16:03:41,479 INFO L125 PetriNetUnfolderBase]: For 49939/50163 co-relation queries the response was YES. [2024-01-31 16:03:41,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23529 conditions, 4233 events. 2307/4233 cut-off events. For 49939/50163 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 27468 event pairs, 735 based on Foata normal form. 19/3868 useless extension candidates. Maximal degree in co-relation 23441. Up to 2678 conditions per place. [2024-01-31 16:03:41,525 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 213 selfloop transitions, 89 changer transitions 0/332 dead transitions. [2024-01-31 16:03:41,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 332 transitions, 5586 flow [2024-01-31 16:03:41,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:03:41,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:03:41,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 237 transitions. [2024-01-31 16:03:41,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4637964774951076 [2024-01-31 16:03:41,526 INFO L175 Difference]: Start difference. First operand has 208 places, 282 transitions, 4591 flow. Second operand 7 states and 237 transitions. [2024-01-31 16:03:41,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 332 transitions, 5586 flow [2024-01-31 16:03:41,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 332 transitions, 5525 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-01-31 16:03:41,631 INFO L231 Difference]: Finished difference. Result has 214 places, 296 transitions, 4878 flow [2024-01-31 16:03:41,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4540, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4878, PETRI_PLACES=214, PETRI_TRANSITIONS=296} [2024-01-31 16:03:41,632 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 137 predicate places. [2024-01-31 16:03:41,632 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 296 transitions, 4878 flow [2024-01-31 16:03:41,632 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 16:03:41,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:41,633 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 16:03:41,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-01-31 16:03:41,633 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:41,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:41,633 INFO L85 PathProgramCache]: Analyzing trace with hash 605568331, now seen corresponding path program 4 times [2024-01-31 16:03:41,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:41,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342346664] [2024-01-31 16:03:41,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:41,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:41,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:41,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:41,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:41,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342346664] [2024-01-31 16:03:41,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342346664] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:41,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:41,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:41,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687951406] [2024-01-31 16:03:41,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:41,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:41,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:41,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:41,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:41,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:41,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 296 transitions, 4878 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 16:03:41,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:41,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:41,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:42,628 INFO L124 PetriNetUnfolderBase]: 2299/4218 cut-off events. [2024-01-31 16:03:42,628 INFO L125 PetriNetUnfolderBase]: For 52777/53012 co-relation queries the response was YES. [2024-01-31 16:03:42,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23859 conditions, 4218 events. 2299/4218 cut-off events. For 52777/53012 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 27306 event pairs, 744 based on Foata normal form. 13/3848 useless extension candidates. Maximal degree in co-relation 23769. Up to 2678 conditions per place. [2024-01-31 16:03:42,666 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 210 selfloop transitions, 90 changer transitions 0/330 dead transitions. [2024-01-31 16:03:42,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 330 transitions, 5722 flow [2024-01-31 16:03:42,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:03:42,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:03:42,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 236 transitions. [2024-01-31 16:03:42,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.461839530332681 [2024-01-31 16:03:42,668 INFO L175 Difference]: Start difference. First operand has 214 places, 296 transitions, 4878 flow. Second operand 7 states and 236 transitions. [2024-01-31 16:03:42,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 330 transitions, 5722 flow [2024-01-31 16:03:42,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 330 transitions, 5599 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-31 16:03:42,764 INFO L231 Difference]: Finished difference. Result has 218 places, 296 transitions, 4945 flow [2024-01-31 16:03:42,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4755, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4945, PETRI_PLACES=218, PETRI_TRANSITIONS=296} [2024-01-31 16:03:42,764 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 141 predicate places. [2024-01-31 16:03:42,765 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 296 transitions, 4945 flow [2024-01-31 16:03:42,765 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 16:03:42,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:42,765 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 16:03:42,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-01-31 16:03:42,765 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:42,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:42,770 INFO L85 PathProgramCache]: Analyzing trace with hash -194978404, now seen corresponding path program 1 times [2024-01-31 16:03:42,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:42,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774462900] [2024-01-31 16:03:42,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:42,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:42,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:42,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:42,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:42,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774462900] [2024-01-31 16:03:42,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774462900] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:42,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:42,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:03:42,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109199938] [2024-01-31 16:03:42,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:43,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:03:43,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:43,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:03:43,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:03:43,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:03:43,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 296 transitions, 4945 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 16:03:43,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:43,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:03:43,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:43,625 INFO L124 PetriNetUnfolderBase]: 1619/3277 cut-off events. [2024-01-31 16:03:43,625 INFO L125 PetriNetUnfolderBase]: For 47132/47242 co-relation queries the response was YES. [2024-01-31 16:03:43,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18656 conditions, 3277 events. 1619/3277 cut-off events. For 47132/47242 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 22743 event pairs, 412 based on Foata normal form. 20/3047 useless extension candidates. Maximal degree in co-relation 18565. Up to 2333 conditions per place. [2024-01-31 16:03:43,658 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 223 selfloop transitions, 51 changer transitions 0/319 dead transitions. [2024-01-31 16:03:43,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 319 transitions, 5615 flow [2024-01-31 16:03:43,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:03:43,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:03:43,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 316 transitions. [2024-01-31 16:03:43,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.541095890410959 [2024-01-31 16:03:43,660 INFO L175 Difference]: Start difference. First operand has 218 places, 296 transitions, 4945 flow. Second operand 8 states and 316 transitions. [2024-01-31 16:03:43,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 319 transitions, 5615 flow [2024-01-31 16:03:43,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 319 transitions, 5476 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-01-31 16:03:43,753 INFO L231 Difference]: Finished difference. Result has 223 places, 300 transitions, 4967 flow [2024-01-31 16:03:43,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4806, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4967, PETRI_PLACES=223, PETRI_TRANSITIONS=300} [2024-01-31 16:03:43,754 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 146 predicate places. [2024-01-31 16:03:43,754 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 300 transitions, 4967 flow [2024-01-31 16:03:43,754 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 16:03:43,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:43,755 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 16:03:43,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-01-31 16:03:43,755 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:43,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:43,755 INFO L85 PathProgramCache]: Analyzing trace with hash -301615980, now seen corresponding path program 1 times [2024-01-31 16:03:43,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:43,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875794013] [2024-01-31 16:03:43,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:43,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:43,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:44,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:44,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:44,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875794013] [2024-01-31 16:03:44,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875794013] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:44,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:44,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:03:44,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365412446] [2024-01-31 16:03:44,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:44,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:44,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:44,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:44,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:44,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:44,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 300 transitions, 4967 flow. Second operand has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:44,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:44,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:44,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:44,926 INFO L124 PetriNetUnfolderBase]: 2220/4246 cut-off events. [2024-01-31 16:03:44,926 INFO L125 PetriNetUnfolderBase]: For 56410/56483 co-relation queries the response was YES. [2024-01-31 16:03:44,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23730 conditions, 4246 events. 2220/4246 cut-off events. For 56410/56483 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 29258 event pairs, 675 based on Foata normal form. 64/4111 useless extension candidates. Maximal degree in co-relation 23636. Up to 1692 conditions per place. [2024-01-31 16:03:44,976 INFO L140 encePairwiseOnDemand]: 54/73 looper letters, 308 selfloop transitions, 146 changer transitions 0/477 dead transitions. [2024-01-31 16:03:44,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 477 transitions, 7777 flow [2024-01-31 16:03:44,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:03:44,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:03:44,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 319 transitions. [2024-01-31 16:03:44,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5462328767123288 [2024-01-31 16:03:44,978 INFO L175 Difference]: Start difference. First operand has 223 places, 300 transitions, 4967 flow. Second operand 8 states and 319 transitions. [2024-01-31 16:03:44,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 477 transitions, 7777 flow [2024-01-31 16:03:45,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 477 transitions, 7644 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-01-31 16:03:45,111 INFO L231 Difference]: Finished difference. Result has 231 places, 373 transitions, 6392 flow [2024-01-31 16:03:45,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4834, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6392, PETRI_PLACES=231, PETRI_TRANSITIONS=373} [2024-01-31 16:03:45,112 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 154 predicate places. [2024-01-31 16:03:45,112 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 373 transitions, 6392 flow [2024-01-31 16:03:45,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:45,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:45,112 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 16:03:45,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-01-31 16:03:45,113 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:45,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:45,113 INFO L85 PathProgramCache]: Analyzing trace with hash 453655916, now seen corresponding path program 1 times [2024-01-31 16:03:45,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:45,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722763991] [2024-01-31 16:03:45,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:45,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:45,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:45,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:45,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:45,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722763991] [2024-01-31 16:03:45,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722763991] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:45,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:45,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:03:45,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796728059] [2024-01-31 16:03:45,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:45,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:03:45,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:45,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:03:45,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:03:45,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:03:45,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 373 transitions, 6392 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 16:03:45,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:45,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:03:45,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:46,139 INFO L124 PetriNetUnfolderBase]: 1990/3882 cut-off events. [2024-01-31 16:03:46,139 INFO L125 PetriNetUnfolderBase]: For 66054/66267 co-relation queries the response was YES. [2024-01-31 16:03:46,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24709 conditions, 3882 events. 1990/3882 cut-off events. For 66054/66267 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 27559 event pairs, 578 based on Foata normal form. 37/3676 useless extension candidates. Maximal degree in co-relation 24610. Up to 2524 conditions per place. [2024-01-31 16:03:46,175 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 259 selfloop transitions, 91 changer transitions 0/404 dead transitions. [2024-01-31 16:03:46,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 404 transitions, 7315 flow [2024-01-31 16:03:46,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:03:46,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:03:46,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 292 transitions. [2024-01-31 16:03:46,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-01-31 16:03:46,176 INFO L175 Difference]: Start difference. First operand has 231 places, 373 transitions, 6392 flow. Second operand 7 states and 292 transitions. [2024-01-31 16:03:46,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 404 transitions, 7315 flow [2024-01-31 16:03:46,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 404 transitions, 7301 flow, removed 7 selfloop flow, removed 0 redundant places. [2024-01-31 16:03:46,302 INFO L231 Difference]: Finished difference. Result has 240 places, 379 transitions, 6710 flow [2024-01-31 16:03:46,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6378, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6710, PETRI_PLACES=240, PETRI_TRANSITIONS=379} [2024-01-31 16:03:46,303 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 163 predicate places. [2024-01-31 16:03:46,303 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 379 transitions, 6710 flow [2024-01-31 16:03:46,303 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 16:03:46,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:46,303 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 16:03:46,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-01-31 16:03:46,304 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:46,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:46,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1275271060, now seen corresponding path program 2 times [2024-01-31 16:03:46,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:46,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130281161] [2024-01-31 16:03:46,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:46,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:46,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:46,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:46,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:46,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130281161] [2024-01-31 16:03:46,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130281161] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:46,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:46,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:03:46,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103223330] [2024-01-31 16:03:46,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:46,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:46,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:46,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:46,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:46,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:46,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 379 transitions, 6710 flow. Second operand has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:46,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:46,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:46,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:47,485 INFO L124 PetriNetUnfolderBase]: 2102/4110 cut-off events. [2024-01-31 16:03:47,485 INFO L125 PetriNetUnfolderBase]: For 68531/68606 co-relation queries the response was YES. [2024-01-31 16:03:47,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25554 conditions, 4110 events. 2102/4110 cut-off events. For 68531/68606 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 28589 event pairs, 378 based on Foata normal form. 104/4047 useless extension candidates. Maximal degree in co-relation 25450. Up to 1654 conditions per place. [2024-01-31 16:03:47,539 INFO L140 encePairwiseOnDemand]: 59/73 looper letters, 320 selfloop transitions, 128 changer transitions 0/471 dead transitions. [2024-01-31 16:03:47,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 471 transitions, 8567 flow [2024-01-31 16:03:47,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:03:47,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:03:47,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 288 transitions. [2024-01-31 16:03:47,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4931506849315068 [2024-01-31 16:03:47,540 INFO L175 Difference]: Start difference. First operand has 240 places, 379 transitions, 6710 flow. Second operand 8 states and 288 transitions. [2024-01-31 16:03:47,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 471 transitions, 8567 flow [2024-01-31 16:03:47,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 471 transitions, 8436 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-01-31 16:03:47,698 INFO L231 Difference]: Finished difference. Result has 246 places, 394 transitions, 7126 flow [2024-01-31 16:03:47,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6579, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7126, PETRI_PLACES=246, PETRI_TRANSITIONS=394} [2024-01-31 16:03:47,699 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 169 predicate places. [2024-01-31 16:03:47,699 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 394 transitions, 7126 flow [2024-01-31 16:03:47,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:47,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:47,699 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 16:03:47,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-01-31 16:03:47,699 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:47,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:47,700 INFO L85 PathProgramCache]: Analyzing trace with hash -733154379, now seen corresponding path program 1 times [2024-01-31 16:03:47,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:47,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040009946] [2024-01-31 16:03:47,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:47,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:47,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:47,968 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 16:03:47,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:47,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040009946] [2024-01-31 16:03:47,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040009946] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:47,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:47,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:03:47,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495299953] [2024-01-31 16:03:47,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:47,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:03:47,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:47,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:03:47,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:03:48,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:48,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 394 transitions, 7126 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 16:03:48,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:48,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:48,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:48,992 INFO L124 PetriNetUnfolderBase]: 2130/4107 cut-off events. [2024-01-31 16:03:48,993 INFO L125 PetriNetUnfolderBase]: For 70488/70567 co-relation queries the response was YES. [2024-01-31 16:03:49,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26527 conditions, 4107 events. 2130/4107 cut-off events. For 70488/70567 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 28265 event pairs, 477 based on Foata normal form. 30/3986 useless extension candidates. Maximal degree in co-relation 26420. Up to 3223 conditions per place. [2024-01-31 16:03:49,045 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 351 selfloop transitions, 54 changer transitions 0/428 dead transitions. [2024-01-31 16:03:49,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 428 transitions, 8105 flow [2024-01-31 16:03:49,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:03:49,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:03:49,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 255 transitions. [2024-01-31 16:03:49,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4366438356164384 [2024-01-31 16:03:49,046 INFO L175 Difference]: Start difference. First operand has 246 places, 394 transitions, 7126 flow. Second operand 8 states and 255 transitions. [2024-01-31 16:03:49,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 428 transitions, 8105 flow [2024-01-31 16:03:49,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 428 transitions, 7925 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-01-31 16:03:49,256 INFO L231 Difference]: Finished difference. Result has 251 places, 401 transitions, 7130 flow [2024-01-31 16:03:49,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6946, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7130, PETRI_PLACES=251, PETRI_TRANSITIONS=401} [2024-01-31 16:03:49,256 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 174 predicate places. [2024-01-31 16:03:49,257 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 401 transitions, 7130 flow [2024-01-31 16:03:49,257 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 16:03:49,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:49,257 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 16:03:49,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-01-31 16:03:49,257 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:49,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:49,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1813817121, now seen corresponding path program 2 times [2024-01-31 16:03:49,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:49,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651720834] [2024-01-31 16:03:49,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:49,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:49,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:49,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:49,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:49,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651720834] [2024-01-31 16:03:49,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651720834] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:49,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:49,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:03:49,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319259171] [2024-01-31 16:03:49,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:49,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:03:49,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:49,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:03:49,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:03:49,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:49,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 401 transitions, 7130 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 16:03:49,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:49,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:49,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:50,367 INFO L124 PetriNetUnfolderBase]: 2121/4084 cut-off events. [2024-01-31 16:03:50,367 INFO L125 PetriNetUnfolderBase]: For 69573/69652 co-relation queries the response was YES. [2024-01-31 16:03:50,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25924 conditions, 4084 events. 2121/4084 cut-off events. For 69573/69652 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 28065 event pairs, 472 based on Foata normal form. 30/3965 useless extension candidates. Maximal degree in co-relation 25816. Up to 3223 conditions per place. [2024-01-31 16:03:50,422 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 345 selfloop transitions, 58 changer transitions 0/426 dead transitions. [2024-01-31 16:03:50,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 426 transitions, 8030 flow [2024-01-31 16:03:50,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:03:50,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:03:50,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 252 transitions. [2024-01-31 16:03:50,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4315068493150685 [2024-01-31 16:03:50,424 INFO L175 Difference]: Start difference. First operand has 251 places, 401 transitions, 7130 flow. Second operand 8 states and 252 transitions. [2024-01-31 16:03:50,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 426 transitions, 8030 flow [2024-01-31 16:03:50,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 426 transitions, 7950 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-01-31 16:03:50,739 INFO L231 Difference]: Finished difference. Result has 254 places, 401 transitions, 7176 flow [2024-01-31 16:03:50,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7052, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7176, PETRI_PLACES=254, PETRI_TRANSITIONS=401} [2024-01-31 16:03:50,740 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 177 predicate places. [2024-01-31 16:03:50,740 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 401 transitions, 7176 flow [2024-01-31 16:03:50,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:50,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:50,740 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 16:03:50,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-01-31 16:03:50,740 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:50,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:50,741 INFO L85 PathProgramCache]: Analyzing trace with hash -907300017, now seen corresponding path program 1 times [2024-01-31 16:03:50,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:50,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950686781] [2024-01-31 16:03:50,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:50,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:50,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:50,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:50,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:50,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950686781] [2024-01-31 16:03:50,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950686781] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:50,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:50,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:50,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657443156] [2024-01-31 16:03:50,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:50,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:03:50,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:50,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:03:50,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:03:50,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:03:50,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 401 transitions, 7176 flow. Second operand has 7 states, 7 states have (on average 32.714285714285715) internal successors, (229), 7 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:50,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:50,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:03:50,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:51,809 INFO L124 PetriNetUnfolderBase]: 1941/3869 cut-off events. [2024-01-31 16:03:51,809 INFO L125 PetriNetUnfolderBase]: For 72952/73150 co-relation queries the response was YES. [2024-01-31 16:03:51,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24742 conditions, 3869 events. 1941/3869 cut-off events. For 72952/73150 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 27727 event pairs, 388 based on Foata normal form. 26/3668 useless extension candidates. Maximal degree in co-relation 24634. Up to 1532 conditions per place. [2024-01-31 16:03:51,861 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 285 selfloop transitions, 134 changer transitions 0/474 dead transitions. [2024-01-31 16:03:51,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 474 transitions, 8815 flow [2024-01-31 16:03:51,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:03:51,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:03:51,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 305 transitions. [2024-01-31 16:03:51,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5968688845401174 [2024-01-31 16:03:51,863 INFO L175 Difference]: Start difference. First operand has 254 places, 401 transitions, 7176 flow. Second operand 7 states and 305 transitions. [2024-01-31 16:03:51,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 474 transitions, 8815 flow [2024-01-31 16:03:52,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 474 transitions, 8684 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-01-31 16:03:52,044 INFO L231 Difference]: Finished difference. Result has 254 places, 414 transitions, 7518 flow [2024-01-31 16:03:52,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7045, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7518, PETRI_PLACES=254, PETRI_TRANSITIONS=414} [2024-01-31 16:03:52,045 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 177 predicate places. [2024-01-31 16:03:52,045 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 414 transitions, 7518 flow [2024-01-31 16:03:52,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.714285714285715) internal successors, (229), 7 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:52,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:52,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:52,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-01-31 16:03:52,046 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:52,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:52,046 INFO L85 PathProgramCache]: Analyzing trace with hash -923335335, now seen corresponding path program 2 times [2024-01-31 16:03:52,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:52,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336021775] [2024-01-31 16:03:52,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:52,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:52,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:52,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:52,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:52,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336021775] [2024-01-31 16:03:52,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336021775] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:52,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:52,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:03:52,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993538461] [2024-01-31 16:03:52,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:52,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:03:52,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:52,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:03:52,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:03:52,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:03:52,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 414 transitions, 7518 flow. Second operand has 7 states, 7 states have (on average 32.714285714285715) internal successors, (229), 7 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:52,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:52,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:03:52,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:53,172 INFO L124 PetriNetUnfolderBase]: 1931/3855 cut-off events. [2024-01-31 16:03:53,172 INFO L125 PetriNetUnfolderBase]: For 77310/77496 co-relation queries the response was YES. [2024-01-31 16:03:53,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25204 conditions, 3855 events. 1931/3855 cut-off events. For 77310/77496 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 27652 event pairs, 294 based on Foata normal form. 26/3650 useless extension candidates. Maximal degree in co-relation 25096. Up to 1532 conditions per place. [2024-01-31 16:03:53,211 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 271 selfloop transitions, 154 changer transitions 0/480 dead transitions. [2024-01-31 16:03:53,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 480 transitions, 9044 flow [2024-01-31 16:03:53,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:03:53,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:03:53,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 311 transitions. [2024-01-31 16:03:53,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6086105675146771 [2024-01-31 16:03:53,213 INFO L175 Difference]: Start difference. First operand has 254 places, 414 transitions, 7518 flow. Second operand 7 states and 311 transitions. [2024-01-31 16:03:53,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 480 transitions, 9044 flow [2024-01-31 16:03:53,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 480 transitions, 8855 flow, removed 28 selfloop flow, removed 2 redundant places. [2024-01-31 16:03:53,384 INFO L231 Difference]: Finished difference. Result has 259 places, 415 transitions, 7668 flow [2024-01-31 16:03:53,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7334, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7668, PETRI_PLACES=259, PETRI_TRANSITIONS=415} [2024-01-31 16:03:53,385 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 182 predicate places. [2024-01-31 16:03:53,385 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 415 transitions, 7668 flow [2024-01-31 16:03:53,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.714285714285715) internal successors, (229), 7 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:53,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:53,386 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 16:03:53,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-01-31 16:03:53,386 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:53,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:53,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1386123599, now seen corresponding path program 3 times [2024-01-31 16:03:53,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:53,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365845428] [2024-01-31 16:03:53,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:53,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:53,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:53,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:53,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:53,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365845428] [2024-01-31 16:03:53,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365845428] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:53,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:53,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:03:53,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794739298] [2024-01-31 16:03:53,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:53,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:03:53,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:53,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:03:53,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:03:53,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:53,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 415 transitions, 7668 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 16:03:53,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:53,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:53,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:54,545 INFO L124 PetriNetUnfolderBase]: 2181/4190 cut-off events. [2024-01-31 16:03:54,545 INFO L125 PetriNetUnfolderBase]: For 81115/81194 co-relation queries the response was YES. [2024-01-31 16:03:54,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27309 conditions, 4190 events. 2181/4190 cut-off events. For 81115/81194 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 28808 event pairs, 477 based on Foata normal form. 30/4071 useless extension candidates. Maximal degree in co-relation 27200. Up to 3314 conditions per place. [2024-01-31 16:03:54,613 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 366 selfloop transitions, 53 changer transitions 0/442 dead transitions. [2024-01-31 16:03:54,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 442 transitions, 8636 flow [2024-01-31 16:03:54,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:03:54,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:03:54,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 253 transitions. [2024-01-31 16:03:54,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4332191780821918 [2024-01-31 16:03:54,614 INFO L175 Difference]: Start difference. First operand has 259 places, 415 transitions, 7668 flow. Second operand 8 states and 253 transitions. [2024-01-31 16:03:54,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 442 transitions, 8636 flow [2024-01-31 16:03:54,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 442 transitions, 8435 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-01-31 16:03:54,825 INFO L231 Difference]: Finished difference. Result has 264 places, 418 transitions, 7607 flow [2024-01-31 16:03:54,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7467, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7607, PETRI_PLACES=264, PETRI_TRANSITIONS=418} [2024-01-31 16:03:54,826 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 187 predicate places. [2024-01-31 16:03:54,826 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 418 transitions, 7607 flow [2024-01-31 16:03:54,826 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 16:03:54,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:54,827 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 16:03:54,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-01-31 16:03:54,827 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:54,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:54,827 INFO L85 PathProgramCache]: Analyzing trace with hash -443977144, now seen corresponding path program 3 times [2024-01-31 16:03:54,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:54,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887143012] [2024-01-31 16:03:54,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:54,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:54,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:55,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:55,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:55,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887143012] [2024-01-31 16:03:55,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887143012] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:55,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:55,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:03:55,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478810877] [2024-01-31 16:03:55,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:55,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:55,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:55,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:55,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:55,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:55,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 418 transitions, 7607 flow. Second operand has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:55,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:55,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:55,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:55,989 INFO L124 PetriNetUnfolderBase]: 2217/4222 cut-off events. [2024-01-31 16:03:55,990 INFO L125 PetriNetUnfolderBase]: For 79068/79147 co-relation queries the response was YES. [2024-01-31 16:03:56,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27204 conditions, 4222 events. 2217/4222 cut-off events. For 79068/79147 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 28879 event pairs, 609 based on Foata normal form. 28/4109 useless extension candidates. Maximal degree in co-relation 27094. Up to 1737 conditions per place. [2024-01-31 16:03:56,046 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 324 selfloop transitions, 163 changer transitions 0/510 dead transitions. [2024-01-31 16:03:56,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 510 transitions, 9530 flow [2024-01-31 16:03:56,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:03:56,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:03:56,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 290 transitions. [2024-01-31 16:03:56,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965753424657534 [2024-01-31 16:03:56,049 INFO L175 Difference]: Start difference. First operand has 264 places, 418 transitions, 7607 flow. Second operand 8 states and 290 transitions. [2024-01-31 16:03:56,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 510 transitions, 9530 flow [2024-01-31 16:03:56,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 510 transitions, 9444 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-01-31 16:03:56,283 INFO L231 Difference]: Finished difference. Result has 267 places, 433 transitions, 8113 flow [2024-01-31 16:03:56,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7521, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8113, PETRI_PLACES=267, PETRI_TRANSITIONS=433} [2024-01-31 16:03:56,284 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 190 predicate places. [2024-01-31 16:03:56,284 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 433 transitions, 8113 flow [2024-01-31 16:03:56,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:56,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:56,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:56,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-01-31 16:03:56,285 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:56,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:56,285 INFO L85 PathProgramCache]: Analyzing trace with hash -454048114, now seen corresponding path program 4 times [2024-01-31 16:03:56,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:56,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107732252] [2024-01-31 16:03:56,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:56,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:56,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:56,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:56,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:56,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107732252] [2024-01-31 16:03:56,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107732252] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:56,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:56,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:03:56,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881598857] [2024-01-31 16:03:56,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:56,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:56,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:56,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:56,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:56,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:56,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 433 transitions, 8113 flow. Second operand has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:56,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:56,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:56,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:57,541 INFO L124 PetriNetUnfolderBase]: 2266/4309 cut-off events. [2024-01-31 16:03:57,541 INFO L125 PetriNetUnfolderBase]: For 88464/88543 co-relation queries the response was YES. [2024-01-31 16:03:57,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29138 conditions, 4309 events. 2266/4309 cut-off events. For 88464/88543 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 29560 event pairs, 609 based on Foata normal form. 28/4196 useless extension candidates. Maximal degree in co-relation 29027. Up to 1755 conditions per place. [2024-01-31 16:03:57,607 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 316 selfloop transitions, 184 changer transitions 0/523 dead transitions. [2024-01-31 16:03:57,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 523 transitions, 10098 flow [2024-01-31 16:03:57,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:03:57,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:03:57,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 297 transitions. [2024-01-31 16:03:57,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5085616438356164 [2024-01-31 16:03:57,608 INFO L175 Difference]: Start difference. First operand has 267 places, 433 transitions, 8113 flow. Second operand 8 states and 297 transitions. [2024-01-31 16:03:57,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 523 transitions, 10098 flow [2024-01-31 16:03:57,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 523 transitions, 9784 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-01-31 16:03:57,818 INFO L231 Difference]: Finished difference. Result has 270 places, 443 transitions, 8410 flow [2024-01-31 16:03:57,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7813, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8410, PETRI_PLACES=270, PETRI_TRANSITIONS=443} [2024-01-31 16:03:57,819 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 193 predicate places. [2024-01-31 16:03:57,819 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 443 transitions, 8410 flow [2024-01-31 16:03:57,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:57,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:57,820 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 16:03:57,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-01-31 16:03:57,820 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:57,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:57,820 INFO L85 PathProgramCache]: Analyzing trace with hash -680161804, now seen corresponding path program 5 times [2024-01-31 16:03:57,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:57,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279111030] [2024-01-31 16:03:57,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:57,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:57,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:58,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:58,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:58,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279111030] [2024-01-31 16:03:58,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279111030] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:58,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:58,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:03:58,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695488342] [2024-01-31 16:03:58,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:58,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:03:58,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:58,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:03:58,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:03:58,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:58,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 443 transitions, 8410 flow. Second operand has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:58,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:58,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:58,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:03:59,067 INFO L124 PetriNetUnfolderBase]: 2300/4371 cut-off events. [2024-01-31 16:03:59,067 INFO L125 PetriNetUnfolderBase]: For 89961/90040 co-relation queries the response was YES. [2024-01-31 16:03:59,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29903 conditions, 4371 events. 2300/4371 cut-off events. For 89961/90040 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 30079 event pairs, 622 based on Foata normal form. 28/4258 useless extension candidates. Maximal degree in co-relation 29790. Up to 1769 conditions per place. [2024-01-31 16:03:59,161 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 316 selfloop transitions, 193 changer transitions 0/532 dead transitions. [2024-01-31 16:03:59,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 532 transitions, 10353 flow [2024-01-31 16:03:59,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:03:59,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:03:59,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 295 transitions. [2024-01-31 16:03:59,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5051369863013698 [2024-01-31 16:03:59,163 INFO L175 Difference]: Start difference. First operand has 270 places, 443 transitions, 8410 flow. Second operand 8 states and 295 transitions. [2024-01-31 16:03:59,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 532 transitions, 10353 flow [2024-01-31 16:03:59,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 532 transitions, 10087 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-01-31 16:03:59,405 INFO L231 Difference]: Finished difference. Result has 275 places, 457 transitions, 8813 flow [2024-01-31 16:03:59,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8154, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8813, PETRI_PLACES=275, PETRI_TRANSITIONS=457} [2024-01-31 16:03:59,406 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 198 predicate places. [2024-01-31 16:03:59,406 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 457 transitions, 8813 flow [2024-01-31 16:03:59,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:03:59,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:03:59,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:03:59,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-01-31 16:03:59,406 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:03:59,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:03:59,407 INFO L85 PathProgramCache]: Analyzing trace with hash -778889877, now seen corresponding path program 4 times [2024-01-31 16:03:59,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:03:59,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748087665] [2024-01-31 16:03:59,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:03:59,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:03:59,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:03:59,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:03:59,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:03:59,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748087665] [2024-01-31 16:03:59,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748087665] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:03:59,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:03:59,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:03:59,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373724036] [2024-01-31 16:03:59,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:03:59,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:03:59,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:03:59,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:03:59,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:03:59,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:03:59,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 457 transitions, 8813 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 16:03:59,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:03:59,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:03:59,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:00,850 INFO L124 PetriNetUnfolderBase]: 2292/4386 cut-off events. [2024-01-31 16:04:00,851 INFO L125 PetriNetUnfolderBase]: For 94565/94644 co-relation queries the response was YES. [2024-01-31 16:04:00,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30588 conditions, 4386 events. 2292/4386 cut-off events. For 94565/94644 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 30422 event pairs, 509 based on Foata normal form. 30/4264 useless extension candidates. Maximal degree in co-relation 30473. Up to 3534 conditions per place. [2024-01-31 16:04:00,901 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 402 selfloop transitions, 53 changer transitions 0/478 dead transitions. [2024-01-31 16:04:00,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 478 transitions, 9805 flow [2024-01-31 16:04:00,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:04:00,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:04:00,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 249 transitions. [2024-01-31 16:04:00,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263698630136986 [2024-01-31 16:04:00,902 INFO L175 Difference]: Start difference. First operand has 275 places, 457 transitions, 8813 flow. Second operand 8 states and 249 transitions. [2024-01-31 16:04:00,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 478 transitions, 9805 flow [2024-01-31 16:04:01,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 478 transitions, 9402 flow, removed 60 selfloop flow, removed 6 redundant places. [2024-01-31 16:04:01,126 INFO L231 Difference]: Finished difference. Result has 277 places, 458 transitions, 8533 flow [2024-01-31 16:04:01,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8410, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8533, PETRI_PLACES=277, PETRI_TRANSITIONS=458} [2024-01-31 16:04:01,131 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 200 predicate places. [2024-01-31 16:04:01,132 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 458 transitions, 8533 flow [2024-01-31 16:04:01,132 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 16:04:01,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:01,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:01,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-01-31 16:04:01,133 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:01,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:01,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1904279615, now seen corresponding path program 1 times [2024-01-31 16:04:01,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:01,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911067071] [2024-01-31 16:04:01,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:01,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:01,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:01,383 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 16:04:01,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:01,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911067071] [2024-01-31 16:04:01,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911067071] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:01,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:01,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:01,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459055818] [2024-01-31 16:04:01,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:01,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:01,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:01,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:01,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:01,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:01,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 458 transitions, 8533 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 16:04:01,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:01,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:01,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:02,679 INFO L124 PetriNetUnfolderBase]: 2929/5364 cut-off events. [2024-01-31 16:04:02,681 INFO L125 PetriNetUnfolderBase]: For 113074/113482 co-relation queries the response was YES. [2024-01-31 16:04:02,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36727 conditions, 5364 events. 2929/5364 cut-off events. For 113074/113482 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 36141 event pairs, 804 based on Foata normal form. 30/5082 useless extension candidates. Maximal degree in co-relation 36612. Up to 3526 conditions per place. [2024-01-31 16:04:02,813 INFO L140 encePairwiseOnDemand]: 60/73 looper letters, 381 selfloop transitions, 111 changer transitions 0/538 dead transitions. [2024-01-31 16:04:02,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 538 transitions, 10354 flow [2024-01-31 16:04:02,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:04:02,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:04:02,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 308 transitions. [2024-01-31 16:04:02,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4687975646879756 [2024-01-31 16:04:02,814 INFO L175 Difference]: Start difference. First operand has 277 places, 458 transitions, 8533 flow. Second operand 9 states and 308 transitions. [2024-01-31 16:04:02,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 538 transitions, 10354 flow [2024-01-31 16:04:03,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 538 transitions, 10251 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-01-31 16:04:03,113 INFO L231 Difference]: Finished difference. Result has 281 places, 481 transitions, 9099 flow [2024-01-31 16:04:03,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8438, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9099, PETRI_PLACES=281, PETRI_TRANSITIONS=481} [2024-01-31 16:04:03,113 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 204 predicate places. [2024-01-31 16:04:03,114 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 481 transitions, 9099 flow [2024-01-31 16:04:03,114 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 16:04:03,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:03,114 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 16:04:03,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-01-31 16:04:03,114 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:03,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:03,114 INFO L85 PathProgramCache]: Analyzing trace with hash 363416677, now seen corresponding path program 1 times [2024-01-31 16:04:03,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:03,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543112207] [2024-01-31 16:04:03,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:03,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:03,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:03,271 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 16:04:03,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:03,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543112207] [2024-01-31 16:04:03,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543112207] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:03,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:03,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:04:03,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562620313] [2024-01-31 16:04:03,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:03,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:03,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:03,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:03,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:03,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:04:03,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 481 transitions, 9099 flow. Second operand has 7 states, 7 states have (on average 32.714285714285715) internal successors, (229), 7 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:03,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:03,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:04:03,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:04,345 INFO L124 PetriNetUnfolderBase]: 2113/4125 cut-off events. [2024-01-31 16:04:04,345 INFO L125 PetriNetUnfolderBase]: For 97085/97369 co-relation queries the response was YES. [2024-01-31 16:04:04,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29129 conditions, 4125 events. 2113/4125 cut-off events. For 97085/97369 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 29553 event pairs, 573 based on Foata normal form. 25/3925 useless extension candidates. Maximal degree in co-relation 29012. Up to 2633 conditions per place. [2024-01-31 16:04:04,400 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 336 selfloop transitions, 110 changer transitions 0/507 dead transitions. [2024-01-31 16:04:04,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 507 transitions, 10245 flow [2024-01-31 16:04:04,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:04,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:04,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 260 transitions. [2024-01-31 16:04:04,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.593607305936073 [2024-01-31 16:04:04,401 INFO L175 Difference]: Start difference. First operand has 281 places, 481 transitions, 9099 flow. Second operand 6 states and 260 transitions. [2024-01-31 16:04:04,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 507 transitions, 10245 flow [2024-01-31 16:04:04,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 507 transitions, 10144 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-01-31 16:04:04,616 INFO L231 Difference]: Finished difference. Result has 284 places, 485 transitions, 9351 flow [2024-01-31 16:04:04,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9004, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=9351, PETRI_PLACES=284, PETRI_TRANSITIONS=485} [2024-01-31 16:04:04,617 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 207 predicate places. [2024-01-31 16:04:04,617 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 485 transitions, 9351 flow [2024-01-31 16:04:04,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.714285714285715) internal successors, (229), 7 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:04,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:04,617 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 16:04:04,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-01-31 16:04:04,618 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:04,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:04,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1538856001, now seen corresponding path program 2 times [2024-01-31 16:04:04,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:04,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731737299] [2024-01-31 16:04:04,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:04,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:04,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:04,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:04,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:04,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731737299] [2024-01-31 16:04:04,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731737299] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:04,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:04,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:04:04,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508315345] [2024-01-31 16:04:04,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:04,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:04,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:04,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:04,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:04,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:04:04,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 485 transitions, 9351 flow. Second operand has 7 states, 7 states have (on average 32.714285714285715) internal successors, (229), 7 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:04,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:04,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:04:04,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:05,727 INFO L124 PetriNetUnfolderBase]: 2099/4101 cut-off events. [2024-01-31 16:04:05,727 INFO L125 PetriNetUnfolderBase]: For 102431/102710 co-relation queries the response was YES. [2024-01-31 16:04:05,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29199 conditions, 4101 events. 2099/4101 cut-off events. For 102431/102710 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 29357 event pairs, 569 based on Foata normal form. 29/3889 useless extension candidates. Maximal degree in co-relation 29080. Up to 2627 conditions per place. [2024-01-31 16:04:05,792 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 339 selfloop transitions, 105 changer transitions 0/505 dead transitions. [2024-01-31 16:04:05,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 505 transitions, 10422 flow [2024-01-31 16:04:05,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:05,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:05,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 253 transitions. [2024-01-31 16:04:05,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5776255707762558 [2024-01-31 16:04:05,794 INFO L175 Difference]: Start difference. First operand has 284 places, 485 transitions, 9351 flow. Second operand 6 states and 253 transitions. [2024-01-31 16:04:05,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 505 transitions, 10422 flow [2024-01-31 16:04:06,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 505 transitions, 10252 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-01-31 16:04:06,037 INFO L231 Difference]: Finished difference. Result has 287 places, 487 transitions, 9445 flow [2024-01-31 16:04:06,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9185, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=9445, PETRI_PLACES=287, PETRI_TRANSITIONS=487} [2024-01-31 16:04:06,038 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 210 predicate places. [2024-01-31 16:04:06,038 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 487 transitions, 9445 flow [2024-01-31 16:04:06,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.714285714285715) internal successors, (229), 7 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:06,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:06,038 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 16:04:06,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-01-31 16:04:06,039 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:06,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:06,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1537825930, now seen corresponding path program 1 times [2024-01-31 16:04:06,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:06,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96223731] [2024-01-31 16:04:06,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:06,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:06,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:06,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:06,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:06,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96223731] [2024-01-31 16:04:06,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96223731] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:06,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:06,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:06,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401984079] [2024-01-31 16:04:06,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:06,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:06,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:06,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:06,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:06,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:06,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 487 transitions, 9445 flow. Second operand has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:06,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:06,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:06,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:07,462 INFO L124 PetriNetUnfolderBase]: 2878/5279 cut-off events. [2024-01-31 16:04:07,462 INFO L125 PetriNetUnfolderBase]: For 120969/121390 co-relation queries the response was YES. [2024-01-31 16:04:07,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37072 conditions, 5279 events. 2878/5279 cut-off events. For 120969/121390 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 35533 event pairs, 792 based on Foata normal form. 24/4995 useless extension candidates. Maximal degree in co-relation 36951. Up to 3520 conditions per place. [2024-01-31 16:04:07,548 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 351 selfloop transitions, 120 changer transitions 0/517 dead transitions. [2024-01-31 16:04:07,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 517 transitions, 10591 flow [2024-01-31 16:04:07,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:04:07,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:04:07,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 266 transitions. [2024-01-31 16:04:07,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4554794520547945 [2024-01-31 16:04:07,549 INFO L175 Difference]: Start difference. First operand has 287 places, 487 transitions, 9445 flow. Second operand 8 states and 266 transitions. [2024-01-31 16:04:07,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 517 transitions, 10591 flow [2024-01-31 16:04:07,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 517 transitions, 10425 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-01-31 16:04:07,860 INFO L231 Difference]: Finished difference. Result has 293 places, 488 transitions, 9568 flow [2024-01-31 16:04:07,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9279, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9568, PETRI_PLACES=293, PETRI_TRANSITIONS=488} [2024-01-31 16:04:07,861 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 216 predicate places. [2024-01-31 16:04:07,861 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 488 transitions, 9568 flow [2024-01-31 16:04:07,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:07,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:07,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:07,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-01-31 16:04:07,862 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:07,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:07,864 INFO L85 PathProgramCache]: Analyzing trace with hash 305632780, now seen corresponding path program 2 times [2024-01-31 16:04:07,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:07,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88809739] [2024-01-31 16:04:07,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:07,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:07,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:08,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:08,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:08,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88809739] [2024-01-31 16:04:08,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88809739] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:08,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:08,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:08,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609669806] [2024-01-31 16:04:08,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:08,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:08,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:08,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:08,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:08,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:08,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 488 transitions, 9568 flow. Second operand has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:08,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:08,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:08,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:09,319 INFO L124 PetriNetUnfolderBase]: 2887/5293 cut-off events. [2024-01-31 16:04:09,319 INFO L125 PetriNetUnfolderBase]: For 125665/126088 co-relation queries the response was YES. [2024-01-31 16:04:09,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37322 conditions, 5293 events. 2887/5293 cut-off events. For 125665/126088 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 35625 event pairs, 792 based on Foata normal form. 26/5010 useless extension candidates. Maximal degree in co-relation 37198. Up to 3526 conditions per place. [2024-01-31 16:04:09,539 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 357 selfloop transitions, 119 changer transitions 0/522 dead transitions. [2024-01-31 16:04:09,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 522 transitions, 10809 flow [2024-01-31 16:04:09,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:04:09,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:04:09,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 264 transitions. [2024-01-31 16:04:09,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520547945205479 [2024-01-31 16:04:09,541 INFO L175 Difference]: Start difference. First operand has 293 places, 488 transitions, 9568 flow. Second operand 8 states and 264 transitions. [2024-01-31 16:04:09,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 522 transitions, 10809 flow [2024-01-31 16:04:09,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 522 transitions, 10566 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-01-31 16:04:09,805 INFO L231 Difference]: Finished difference. Result has 296 places, 492 transitions, 9668 flow [2024-01-31 16:04:09,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9331, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9668, PETRI_PLACES=296, PETRI_TRANSITIONS=492} [2024-01-31 16:04:09,806 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 219 predicate places. [2024-01-31 16:04:09,806 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 492 transitions, 9668 flow [2024-01-31 16:04:09,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:09,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:09,806 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 16:04:09,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-01-31 16:04:09,806 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:09,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:09,807 INFO L85 PathProgramCache]: Analyzing trace with hash -162750391, now seen corresponding path program 2 times [2024-01-31 16:04:09,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:09,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670352944] [2024-01-31 16:04:09,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:09,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:09,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:10,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:10,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:10,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670352944] [2024-01-31 16:04:10,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670352944] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:10,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:10,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:10,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467055183] [2024-01-31 16:04:10,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:10,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:10,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:10,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:10,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:10,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:10,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 492 transitions, 9668 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 16:04:10,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:10,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:10,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:11,287 INFO L124 PetriNetUnfolderBase]: 2887/5288 cut-off events. [2024-01-31 16:04:11,287 INFO L125 PetriNetUnfolderBase]: For 128026/128458 co-relation queries the response was YES. [2024-01-31 16:04:11,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37263 conditions, 5288 events. 2887/5288 cut-off events. For 128026/128458 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 35576 event pairs, 803 based on Foata normal form. 32/5006 useless extension candidates. Maximal degree in co-relation 37139. Up to 3526 conditions per place. [2024-01-31 16:04:11,355 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 381 selfloop transitions, 97 changer transitions 0/524 dead transitions. [2024-01-31 16:04:11,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 524 transitions, 10852 flow [2024-01-31 16:04:11,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:11,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:11,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 235 transitions. [2024-01-31 16:04:11,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4598825831702544 [2024-01-31 16:04:11,356 INFO L175 Difference]: Start difference. First operand has 296 places, 492 transitions, 9668 flow. Second operand 7 states and 235 transitions. [2024-01-31 16:04:11,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 524 transitions, 10852 flow [2024-01-31 16:04:11,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 524 transitions, 10672 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-01-31 16:04:11,668 INFO L231 Difference]: Finished difference. Result has 298 places, 494 transitions, 9736 flow [2024-01-31 16:04:11,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9492, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9736, PETRI_PLACES=298, PETRI_TRANSITIONS=494} [2024-01-31 16:04:11,669 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 221 predicate places. [2024-01-31 16:04:11,669 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 494 transitions, 9736 flow [2024-01-31 16:04:11,669 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 16:04:11,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:11,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:11,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-01-31 16:04:11,670 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:11,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:11,670 INFO L85 PathProgramCache]: Analyzing trace with hash -293650601, now seen corresponding path program 3 times [2024-01-31 16:04:11,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:11,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755663586] [2024-01-31 16:04:11,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:11,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:11,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:11,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:11,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:11,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755663586] [2024-01-31 16:04:11,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755663586] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:11,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:11,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:11,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19930354] [2024-01-31 16:04:11,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:11,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:11,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:11,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:11,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:11,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:11,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 494 transitions, 9736 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 16:04:11,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:11,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:11,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:13,155 INFO L124 PetriNetUnfolderBase]: 2941/5387 cut-off events. [2024-01-31 16:04:13,155 INFO L125 PetriNetUnfolderBase]: For 133748/134155 co-relation queries the response was YES. [2024-01-31 16:04:13,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37803 conditions, 5387 events. 2941/5387 cut-off events. For 133748/134155 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 36432 event pairs, 843 based on Foata normal form. 28/5103 useless extension candidates. Maximal degree in co-relation 37678. Up to 3562 conditions per place. [2024-01-31 16:04:13,220 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 371 selfloop transitions, 119 changer transitions 0/536 dead transitions. [2024-01-31 16:04:13,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 536 transitions, 11041 flow [2024-01-31 16:04:13,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:13,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:13,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 237 transitions. [2024-01-31 16:04:13,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4637964774951076 [2024-01-31 16:04:13,222 INFO L175 Difference]: Start difference. First operand has 298 places, 494 transitions, 9736 flow. Second operand 7 states and 237 transitions. [2024-01-31 16:04:13,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 536 transitions, 11041 flow [2024-01-31 16:04:13,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 536 transitions, 10854 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-01-31 16:04:13,500 INFO L231 Difference]: Finished difference. Result has 300 places, 505 transitions, 9970 flow [2024-01-31 16:04:13,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9563, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9970, PETRI_PLACES=300, PETRI_TRANSITIONS=505} [2024-01-31 16:04:13,500 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 223 predicate places. [2024-01-31 16:04:13,501 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 505 transitions, 9970 flow [2024-01-31 16:04:13,501 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 16:04:13,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:13,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:13,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-01-31 16:04:13,501 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:13,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:13,502 INFO L85 PathProgramCache]: Analyzing trace with hash -292576451, now seen corresponding path program 4 times [2024-01-31 16:04:13,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:13,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696313114] [2024-01-31 16:04:13,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:13,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:13,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:13,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:13,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:13,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696313114] [2024-01-31 16:04:13,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696313114] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:13,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:13,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:13,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317368101] [2024-01-31 16:04:13,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:13,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:13,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:13,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:13,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:13,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:13,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 505 transitions, 9970 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 16:04:13,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:13,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:13,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:14,929 INFO L124 PetriNetUnfolderBase]: 2921/5351 cut-off events. [2024-01-31 16:04:14,929 INFO L125 PetriNetUnfolderBase]: For 135127/135547 co-relation queries the response was YES. [2024-01-31 16:04:14,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37899 conditions, 5351 events. 2921/5351 cut-off events. For 135127/135547 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 36110 event pairs, 843 based on Foata normal form. 30/5069 useless extension candidates. Maximal degree in co-relation 37773. Up to 3562 conditions per place. [2024-01-31 16:04:15,012 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 364 selfloop transitions, 121 changer transitions 0/531 dead transitions. [2024-01-31 16:04:15,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 531 transitions, 11094 flow [2024-01-31 16:04:15,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:15,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:15,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 233 transitions. [2024-01-31 16:04:15,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45596868884540115 [2024-01-31 16:04:15,014 INFO L175 Difference]: Start difference. First operand has 300 places, 505 transitions, 9970 flow. Second operand 7 states and 233 transitions. [2024-01-31 16:04:15,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 531 transitions, 11094 flow [2024-01-31 16:04:15,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 531 transitions, 10870 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-01-31 16:04:15,352 INFO L231 Difference]: Finished difference. Result has 297 places, 504 transitions, 9974 flow [2024-01-31 16:04:15,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9732, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9974, PETRI_PLACES=297, PETRI_TRANSITIONS=504} [2024-01-31 16:04:15,353 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 220 predicate places. [2024-01-31 16:04:15,353 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 504 transitions, 9974 flow [2024-01-31 16:04:15,354 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 16:04:15,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:15,354 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 16:04:15,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-01-31 16:04:15,354 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:15,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:15,355 INFO L85 PathProgramCache]: Analyzing trace with hash 2130593710, now seen corresponding path program 3 times [2024-01-31 16:04:15,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:15,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236034692] [2024-01-31 16:04:15,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:15,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:15,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:15,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:15,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:15,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236034692] [2024-01-31 16:04:15,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236034692] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:15,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:15,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:15,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517282881] [2024-01-31 16:04:15,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:15,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:15,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:15,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:15,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:15,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:15,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 504 transitions, 9974 flow. Second operand has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:15,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:15,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:15,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:16,760 INFO L124 PetriNetUnfolderBase]: 2934/5358 cut-off events. [2024-01-31 16:04:16,761 INFO L125 PetriNetUnfolderBase]: For 136888/137270 co-relation queries the response was YES. [2024-01-31 16:04:16,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37713 conditions, 5358 events. 2934/5358 cut-off events. For 136888/137270 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 36009 event pairs, 847 based on Foata normal form. 16/5052 useless extension candidates. Maximal degree in co-relation 37592. Up to 3579 conditions per place. [2024-01-31 16:04:16,845 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 360 selfloop transitions, 124 changer transitions 0/530 dead transitions. [2024-01-31 16:04:16,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 530 transitions, 11164 flow [2024-01-31 16:04:16,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:16,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:16,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 228 transitions. [2024-01-31 16:04:16,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4461839530332681 [2024-01-31 16:04:16,847 INFO L175 Difference]: Start difference. First operand has 297 places, 504 transitions, 9974 flow. Second operand 7 states and 228 transitions. [2024-01-31 16:04:16,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 530 transitions, 11164 flow [2024-01-31 16:04:17,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 530 transitions, 10897 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-01-31 16:04:17,177 INFO L231 Difference]: Finished difference. Result has 299 places, 509 transitions, 10102 flow [2024-01-31 16:04:17,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9711, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10102, PETRI_PLACES=299, PETRI_TRANSITIONS=509} [2024-01-31 16:04:17,178 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 222 predicate places. [2024-01-31 16:04:17,178 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 509 transitions, 10102 flow [2024-01-31 16:04:17,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:17,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:17,179 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 16:04:17,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-01-31 16:04:17,179 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:17,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:17,179 INFO L85 PathProgramCache]: Analyzing trace with hash 169508703, now seen corresponding path program 1 times [2024-01-31 16:04:17,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:17,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785103495] [2024-01-31 16:04:17,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:17,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:17,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:17,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:17,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:17,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785103495] [2024-01-31 16:04:17,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785103495] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:17,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:17,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:04:17,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189551607] [2024-01-31 16:04:17,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:17,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:04:17,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:17,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:04:17,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:04:17,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:04:17,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 509 transitions, 10102 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 16:04:17,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:17,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:04:17,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:18,191 INFO L124 PetriNetUnfolderBase]: 2137/4248 cut-off events. [2024-01-31 16:04:18,192 INFO L125 PetriNetUnfolderBase]: For 116495/116778 co-relation queries the response was YES. [2024-01-31 16:04:18,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30301 conditions, 4248 events. 2137/4248 cut-off events. For 116495/116778 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 31056 event pairs, 319 based on Foata normal form. 79/4029 useless extension candidates. Maximal degree in co-relation 30179. Up to 1330 conditions per place. [2024-01-31 16:04:18,253 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 344 selfloop transitions, 141 changer transitions 0/548 dead transitions. [2024-01-31 16:04:18,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 548 transitions, 11578 flow [2024-01-31 16:04:18,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:04:18,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:04:18,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 185 transitions. [2024-01-31 16:04:18,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6335616438356164 [2024-01-31 16:04:18,254 INFO L175 Difference]: Start difference. First operand has 299 places, 509 transitions, 10102 flow. Second operand 4 states and 185 transitions. [2024-01-31 16:04:18,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 548 transitions, 11578 flow [2024-01-31 16:04:18,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 548 transitions, 11478 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-01-31 16:04:18,493 INFO L231 Difference]: Finished difference. Result has 300 places, 514 transitions, 10544 flow [2024-01-31 16:04:18,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10012, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=10544, PETRI_PLACES=300, PETRI_TRANSITIONS=514} [2024-01-31 16:04:18,494 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 223 predicate places. [2024-01-31 16:04:18,494 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 514 transitions, 10544 flow [2024-01-31 16:04:18,494 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 16:04:18,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:18,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:18,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-01-31 16:04:18,495 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:18,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:18,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1048060663, now seen corresponding path program 2 times [2024-01-31 16:04:18,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:18,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295960889] [2024-01-31 16:04:18,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:18,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:18,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:18,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:18,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295960889] [2024-01-31 16:04:18,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295960889] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:18,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:18,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:04:18,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188971078] [2024-01-31 16:04:18,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:18,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:04:18,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:18,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:04:18,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:04:18,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:04:18,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 514 transitions, 10544 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 16:04:18,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:18,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:04:18,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:19,298 INFO L124 PetriNetUnfolderBase]: 1624/3151 cut-off events. [2024-01-31 16:04:19,298 INFO L125 PetriNetUnfolderBase]: For 113064/113221 co-relation queries the response was YES. [2024-01-31 16:04:19,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26018 conditions, 3151 events. 1624/3151 cut-off events. For 113064/113221 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 21728 event pairs, 299 based on Foata normal form. 86/3039 useless extension candidates. Maximal degree in co-relation 25895. Up to 1440 conditions per place. [2024-01-31 16:04:19,341 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 332 selfloop transitions, 110 changer transitions 1/505 dead transitions. [2024-01-31 16:04:19,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 505 transitions, 11392 flow [2024-01-31 16:04:19,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:04:19,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:04:19,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 207 transitions. [2024-01-31 16:04:19,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5671232876712329 [2024-01-31 16:04:19,343 INFO L175 Difference]: Start difference. First operand has 300 places, 514 transitions, 10544 flow. Second operand 5 states and 207 transitions. [2024-01-31 16:04:19,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 505 transitions, 11392 flow [2024-01-31 16:04:19,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 505 transitions, 10989 flow, removed 8 selfloop flow, removed 18 redundant places. [2024-01-31 16:04:19,622 INFO L231 Difference]: Finished difference. Result has 283 places, 493 transitions, 10370 flow [2024-01-31 16:04:19,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9849, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=10370, PETRI_PLACES=283, PETRI_TRANSITIONS=493} [2024-01-31 16:04:19,622 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 206 predicate places. [2024-01-31 16:04:19,622 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 493 transitions, 10370 flow [2024-01-31 16:04:19,623 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 16:04:19,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:19,623 INFO L208 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 16:04:19,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-01-31 16:04:19,623 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:19,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:19,623 INFO L85 PathProgramCache]: Analyzing trace with hash -937605362, now seen corresponding path program 1 times [2024-01-31 16:04:19,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:19,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413822007] [2024-01-31 16:04:19,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:19,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:19,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:19,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:19,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:19,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413822007] [2024-01-31 16:04:19,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413822007] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:19,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:19,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:04:19,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634773852] [2024-01-31 16:04:19,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:19,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:19,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:19,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:19,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:19,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:19,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 493 transitions, 10370 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 16:04:19,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:19,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:19,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:21,062 INFO L124 PetriNetUnfolderBase]: 2037/3999 cut-off events. [2024-01-31 16:04:21,062 INFO L125 PetriNetUnfolderBase]: For 116258/116356 co-relation queries the response was YES. [2024-01-31 16:04:21,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30615 conditions, 3999 events. 2037/3999 cut-off events. For 116258/116356 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 28244 event pairs, 437 based on Foata normal form. 25/3924 useless extension candidates. Maximal degree in co-relation 30503. Up to 1310 conditions per place. [2024-01-31 16:04:21,131 INFO L140 encePairwiseOnDemand]: 51/73 looper letters, 329 selfloop transitions, 233 changer transitions 6/593 dead transitions. [2024-01-31 16:04:21,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 593 transitions, 12665 flow [2024-01-31 16:04:21,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:04:21,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:04:21,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 316 transitions. [2024-01-31 16:04:21,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.541095890410959 [2024-01-31 16:04:21,132 INFO L175 Difference]: Start difference. First operand has 283 places, 493 transitions, 10370 flow. Second operand 8 states and 316 transitions. [2024-01-31 16:04:21,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 593 transitions, 12665 flow [2024-01-31 16:04:21,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 593 transitions, 12353 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-01-31 16:04:21,482 INFO L231 Difference]: Finished difference. Result has 287 places, 513 transitions, 11042 flow [2024-01-31 16:04:21,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10087, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=215, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11042, PETRI_PLACES=287, PETRI_TRANSITIONS=513} [2024-01-31 16:04:21,483 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 210 predicate places. [2024-01-31 16:04:21,483 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 513 transitions, 11042 flow [2024-01-31 16:04:21,483 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 16:04:21,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:21,483 INFO L208 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 16:04:21,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-01-31 16:04:21,483 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:21,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:21,483 INFO L85 PathProgramCache]: Analyzing trace with hash 840033500, now seen corresponding path program 2 times [2024-01-31 16:04:21,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:21,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738474290] [2024-01-31 16:04:21,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:21,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:21,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:21,731 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 16:04:21,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:21,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738474290] [2024-01-31 16:04:21,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738474290] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:21,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:21,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:04:21,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061666168] [2024-01-31 16:04:21,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:21,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:21,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:21,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:21,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:21,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:21,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 513 transitions, 11042 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 16:04:21,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:21,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:21,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:22,814 INFO L124 PetriNetUnfolderBase]: 2055/4078 cut-off events. [2024-01-31 16:04:22,814 INFO L125 PetriNetUnfolderBase]: For 123274/123396 co-relation queries the response was YES. [2024-01-31 16:04:22,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32915 conditions, 4078 events. 2055/4078 cut-off events. For 123274/123396 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 29155 event pairs, 400 based on Foata normal form. 17/4023 useless extension candidates. Maximal degree in co-relation 32802. Up to 1330 conditions per place. [2024-01-31 16:04:22,881 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 346 selfloop transitions, 203 changer transitions 4/578 dead transitions. [2024-01-31 16:04:22,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 578 transitions, 12915 flow [2024-01-31 16:04:22,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:04:22,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:04:22,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 283 transitions. [2024-01-31 16:04:22,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4845890410958904 [2024-01-31 16:04:22,883 INFO L175 Difference]: Start difference. First operand has 287 places, 513 transitions, 11042 flow. Second operand 8 states and 283 transitions. [2024-01-31 16:04:22,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 578 transitions, 12915 flow [2024-01-31 16:04:23,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 578 transitions, 12830 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-01-31 16:04:23,256 INFO L231 Difference]: Finished difference. Result has 294 places, 522 transitions, 11591 flow [2024-01-31 16:04:23,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10958, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11591, PETRI_PLACES=294, PETRI_TRANSITIONS=522} [2024-01-31 16:04:23,257 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 217 predicate places. [2024-01-31 16:04:23,257 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 522 transitions, 11591 flow [2024-01-31 16:04:23,257 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 16:04:23,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:23,257 INFO L208 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 16:04:23,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-01-31 16:04:23,258 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:23,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:23,258 INFO L85 PathProgramCache]: Analyzing trace with hash 829587740, now seen corresponding path program 3 times [2024-01-31 16:04:23,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:23,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395294509] [2024-01-31 16:04:23,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:23,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:23,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:23,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:23,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:23,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395294509] [2024-01-31 16:04:23,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395294509] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:23,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:23,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:04:23,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085133472] [2024-01-31 16:04:23,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:23,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:23,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:23,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:23,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:23,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:23,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 522 transitions, 11591 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 16:04:23,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:23,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:23,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:24,665 INFO L124 PetriNetUnfolderBase]: 2069/4151 cut-off events. [2024-01-31 16:04:24,665 INFO L125 PetriNetUnfolderBase]: For 134959/135077 co-relation queries the response was YES. [2024-01-31 16:04:24,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34739 conditions, 4151 events. 2069/4151 cut-off events. For 134959/135077 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 30125 event pairs, 413 based on Foata normal form. 21/4106 useless extension candidates. Maximal degree in co-relation 34623. Up to 1340 conditions per place. [2024-01-31 16:04:24,722 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 335 selfloop transitions, 230 changer transitions 3/593 dead transitions. [2024-01-31 16:04:24,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 593 transitions, 13608 flow [2024-01-31 16:04:24,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:04:24,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:04:24,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 297 transitions. [2024-01-31 16:04:24,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5085616438356164 [2024-01-31 16:04:24,723 INFO L175 Difference]: Start difference. First operand has 294 places, 522 transitions, 11591 flow. Second operand 8 states and 297 transitions. [2024-01-31 16:04:24,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 593 transitions, 13608 flow [2024-01-31 16:04:25,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 593 transitions, 13299 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-01-31 16:04:25,103 INFO L231 Difference]: Finished difference. Result has 298 places, 527 transitions, 11921 flow [2024-01-31 16:04:25,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11295, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=225, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11921, PETRI_PLACES=298, PETRI_TRANSITIONS=527} [2024-01-31 16:04:25,104 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 221 predicate places. [2024-01-31 16:04:25,104 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 527 transitions, 11921 flow [2024-01-31 16:04:25,104 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 16:04:25,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:25,104 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 16:04:25,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-01-31 16:04:25,105 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:25,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:25,105 INFO L85 PathProgramCache]: Analyzing trace with hash 678482178, now seen corresponding path program 4 times [2024-01-31 16:04:25,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:25,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514828256] [2024-01-31 16:04:25,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:25,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:25,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:25,349 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 16:04:25,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:25,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514828256] [2024-01-31 16:04:25,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514828256] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:25,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:25,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:04:25,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480494515] [2024-01-31 16:04:25,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:25,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:25,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:25,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:25,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:25,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:25,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 527 transitions, 11921 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 16:04:25,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:25,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:25,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:26,561 INFO L124 PetriNetUnfolderBase]: 2079/4197 cut-off events. [2024-01-31 16:04:26,561 INFO L125 PetriNetUnfolderBase]: For 135632/135750 co-relation queries the response was YES. [2024-01-31 16:04:26,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35587 conditions, 4197 events. 2079/4197 cut-off events. For 135632/135750 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 30631 event pairs, 432 based on Foata normal form. 21/4152 useless extension candidates. Maximal degree in co-relation 35471. Up to 1348 conditions per place. [2024-01-31 16:04:26,619 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 330 selfloop transitions, 234 changer transitions 2/591 dead transitions. [2024-01-31 16:04:26,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 591 transitions, 13819 flow [2024-01-31 16:04:26,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:04:26,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:04:26,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 288 transitions. [2024-01-31 16:04:26,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4931506849315068 [2024-01-31 16:04:26,621 INFO L175 Difference]: Start difference. First operand has 298 places, 527 transitions, 11921 flow. Second operand 8 states and 288 transitions. [2024-01-31 16:04:26,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 591 transitions, 13819 flow [2024-01-31 16:04:26,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 591 transitions, 13524 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-01-31 16:04:27,005 INFO L231 Difference]: Finished difference. Result has 304 places, 536 transitions, 12455 flow [2024-01-31 16:04:27,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11632, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=225, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12455, PETRI_PLACES=304, PETRI_TRANSITIONS=536} [2024-01-31 16:04:27,006 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 227 predicate places. [2024-01-31 16:04:27,006 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 536 transitions, 12455 flow [2024-01-31 16:04:27,006 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 16:04:27,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:27,006 INFO L208 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 16:04:27,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-01-31 16:04:27,007 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:27,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:27,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1291116560, now seen corresponding path program 1 times [2024-01-31 16:04:27,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:27,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716108020] [2024-01-31 16:04:27,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:27,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:27,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:27,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:27,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:27,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716108020] [2024-01-31 16:04:27,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716108020] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:27,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:27,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:27,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665257875] [2024-01-31 16:04:27,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:27,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:27,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:27,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:27,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:27,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:04:27,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 536 transitions, 12455 flow. Second operand has 7 states, 7 states have (on average 32.857142857142854) internal successors, (230), 7 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:27,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:27,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:04:27,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:28,280 INFO L124 PetriNetUnfolderBase]: 1868/3935 cut-off events. [2024-01-31 16:04:28,280 INFO L125 PetriNetUnfolderBase]: For 156529/156878 co-relation queries the response was YES. [2024-01-31 16:04:28,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35454 conditions, 3935 events. 1868/3935 cut-off events. For 156529/156878 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 30326 event pairs, 337 based on Foata normal form. 33/3793 useless extension candidates. Maximal degree in co-relation 35335. Up to 1551 conditions per place. [2024-01-31 16:04:28,334 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 363 selfloop transitions, 163 changer transitions 2/596 dead transitions. [2024-01-31 16:04:28,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 596 transitions, 14426 flow [2024-01-31 16:04:28,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:28,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:28,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 299 transitions. [2024-01-31 16:04:28,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5851272015655578 [2024-01-31 16:04:28,335 INFO L175 Difference]: Start difference. First operand has 304 places, 536 transitions, 12455 flow. Second operand 7 states and 299 transitions. [2024-01-31 16:04:28,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 596 transitions, 14426 flow [2024-01-31 16:04:28,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 596 transitions, 13929 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-01-31 16:04:28,738 INFO L231 Difference]: Finished difference. Result has 304 places, 543 transitions, 12453 flow [2024-01-31 16:04:28,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11970, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12453, PETRI_PLACES=304, PETRI_TRANSITIONS=543} [2024-01-31 16:04:28,739 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 227 predicate places. [2024-01-31 16:04:28,739 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 543 transitions, 12453 flow [2024-01-31 16:04:28,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.857142857142854) internal successors, (230), 7 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:28,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:28,740 INFO L208 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 16:04:28,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-01-31 16:04:28,740 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:28,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:28,740 INFO L85 PathProgramCache]: Analyzing trace with hash 562998585, now seen corresponding path program 1 times [2024-01-31 16:04:28,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:28,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865168603] [2024-01-31 16:04:28,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:28,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:28,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:28,974 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 16:04:28,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:28,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865168603] [2024-01-31 16:04:28,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865168603] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:28,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:28,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:28,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724919768] [2024-01-31 16:04:28,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:28,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:28,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:28,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:28,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:29,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:29,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 543 transitions, 12453 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 16:04:29,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:29,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:29,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:30,252 INFO L124 PetriNetUnfolderBase]: 2280/4542 cut-off events. [2024-01-31 16:04:30,253 INFO L125 PetriNetUnfolderBase]: For 155720/155834 co-relation queries the response was YES. [2024-01-31 16:04:30,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39294 conditions, 4542 events. 2280/4542 cut-off events. For 155720/155834 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 33455 event pairs, 619 based on Foata normal form. 43/4519 useless extension candidates. Maximal degree in co-relation 39176. Up to 3122 conditions per place. [2024-01-31 16:04:30,313 INFO L140 encePairwiseOnDemand]: 61/73 looper letters, 437 selfloop transitions, 142 changer transitions 0/604 dead transitions. [2024-01-31 16:04:30,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 604 transitions, 14478 flow [2024-01-31 16:04:30,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:04:30,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:04:30,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 294 transitions. [2024-01-31 16:04:30,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4474885844748858 [2024-01-31 16:04:30,314 INFO L175 Difference]: Start difference. First operand has 304 places, 543 transitions, 12453 flow. Second operand 9 states and 294 transitions. [2024-01-31 16:04:30,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 604 transitions, 14478 flow [2024-01-31 16:04:30,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 604 transitions, 14169 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-01-31 16:04:30,746 INFO L231 Difference]: Finished difference. Result has 310 places, 560 transitions, 12813 flow [2024-01-31 16:04:30,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12154, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12813, PETRI_PLACES=310, PETRI_TRANSITIONS=560} [2024-01-31 16:04:30,746 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 233 predicate places. [2024-01-31 16:04:30,747 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 560 transitions, 12813 flow [2024-01-31 16:04:30,747 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 16:04:30,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:30,747 INFO L208 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 16:04:30,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-01-31 16:04:30,747 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:30,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:30,747 INFO L85 PathProgramCache]: Analyzing trace with hash -462527044, now seen corresponding path program 2 times [2024-01-31 16:04:30,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:30,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886818224] [2024-01-31 16:04:30,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:30,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:30,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:30,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:30,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:30,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886818224] [2024-01-31 16:04:30,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886818224] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:30,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:30,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:30,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057490848] [2024-01-31 16:04:30,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:30,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:30,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:30,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:30,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:30,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:04:30,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 560 transitions, 12813 flow. Second operand has 7 states, 7 states have (on average 32.857142857142854) internal successors, (230), 7 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:30,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:30,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:04:30,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:32,051 INFO L124 PetriNetUnfolderBase]: 1954/4116 cut-off events. [2024-01-31 16:04:32,051 INFO L125 PetriNetUnfolderBase]: For 158646/159000 co-relation queries the response was YES. [2024-01-31 16:04:32,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36480 conditions, 4116 events. 1954/4116 cut-off events. For 158646/159000 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 32051 event pairs, 357 based on Foata normal form. 21/3961 useless extension candidates. Maximal degree in co-relation 36361. Up to 1582 conditions per place. [2024-01-31 16:04:32,093 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 372 selfloop transitions, 165 changer transitions 2/607 dead transitions. [2024-01-31 16:04:32,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 607 transitions, 14608 flow [2024-01-31 16:04:32,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:32,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:32,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 303 transitions. [2024-01-31 16:04:32,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5929549902152642 [2024-01-31 16:04:32,094 INFO L175 Difference]: Start difference. First operand has 310 places, 560 transitions, 12813 flow. Second operand 7 states and 303 transitions. [2024-01-31 16:04:32,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 607 transitions, 14608 flow [2024-01-31 16:04:32,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 607 transitions, 14401 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-01-31 16:04:32,462 INFO L231 Difference]: Finished difference. Result has 315 places, 563 transitions, 13027 flow [2024-01-31 16:04:32,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12606, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13027, PETRI_PLACES=315, PETRI_TRANSITIONS=563} [2024-01-31 16:04:32,463 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 238 predicate places. [2024-01-31 16:04:32,463 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 563 transitions, 13027 flow [2024-01-31 16:04:32,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.857142857142854) internal successors, (230), 7 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:32,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:32,463 INFO L208 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 16:04:32,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-01-31 16:04:32,463 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:32,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:32,464 INFO L85 PathProgramCache]: Analyzing trace with hash 658464866, now seen corresponding path program 3 times [2024-01-31 16:04:32,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:32,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757974180] [2024-01-31 16:04:32,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:32,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:32,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:32,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:32,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:32,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757974180] [2024-01-31 16:04:32,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757974180] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:32,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:32,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:32,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936022975] [2024-01-31 16:04:32,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:32,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:32,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:32,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:32,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:32,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:04:32,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 563 transitions, 13027 flow. Second operand has 7 states, 7 states have (on average 32.857142857142854) internal successors, (230), 7 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:32,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:32,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:04:32,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:33,849 INFO L124 PetriNetUnfolderBase]: 1951/4109 cut-off events. [2024-01-31 16:04:33,849 INFO L125 PetriNetUnfolderBase]: For 156766/157077 co-relation queries the response was YES. [2024-01-31 16:04:33,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36843 conditions, 4109 events. 1951/4109 cut-off events. For 156766/157077 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 31905 event pairs, 332 based on Foata normal form. 21/3954 useless extension candidates. Maximal degree in co-relation 36722. Up to 1584 conditions per place. [2024-01-31 16:04:33,903 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 332 selfloop transitions, 199 changer transitions 2/601 dead transitions. [2024-01-31 16:04:33,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 601 transitions, 14592 flow [2024-01-31 16:04:33,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:33,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:33,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 297 transitions. [2024-01-31 16:04:33,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5812133072407045 [2024-01-31 16:04:33,905 INFO L175 Difference]: Start difference. First operand has 315 places, 563 transitions, 13027 flow. Second operand 7 states and 297 transitions. [2024-01-31 16:04:33,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 601 transitions, 14592 flow [2024-01-31 16:04:34,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 601 transitions, 14310 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-01-31 16:04:34,344 INFO L231 Difference]: Finished difference. Result has 320 places, 566 transitions, 13299 flow [2024-01-31 16:04:34,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12746, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13299, PETRI_PLACES=320, PETRI_TRANSITIONS=566} [2024-01-31 16:04:34,344 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 243 predicate places. [2024-01-31 16:04:34,344 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 566 transitions, 13299 flow [2024-01-31 16:04:34,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.857142857142854) internal successors, (230), 7 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:34,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:34,345 INFO L208 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 16:04:34,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-01-31 16:04:34,345 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 16:04:34,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:34,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1867892476, now seen corresponding path program 4 times [2024-01-31 16:04:34,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:34,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986749229] [2024-01-31 16:04:34,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:34,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:34,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:34,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:34,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:34,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986749229] [2024-01-31 16:04:34,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986749229] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:34,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:34,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:34,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512792402] [2024-01-31 16:04:34,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:34,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:34,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:34,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:34,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:34,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:04:34,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 566 transitions, 13299 flow. Second operand has 7 states, 7 states have (on average 32.857142857142854) internal successors, (230), 7 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:34,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:34,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:04:34,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:35,864 INFO L124 PetriNetUnfolderBase]: 1958/4130 cut-off events. [2024-01-31 16:04:35,864 INFO L125 PetriNetUnfolderBase]: For 164869/165175 co-relation queries the response was YES. [2024-01-31 16:04:35,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37494 conditions, 4130 events. 1958/4130 cut-off events. For 164869/165175 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 32155 event pairs, 312 based on Foata normal form. 33/3987 useless extension candidates. Maximal degree in co-relation 37371. Up to 1590 conditions per place. [2024-01-31 16:04:35,914 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 347 selfloop transitions, 185 changer transitions 2/602 dead transitions. [2024-01-31 16:04:35,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 602 transitions, 14927 flow [2024-01-31 16:04:35,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:35,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:35,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 260 transitions. [2024-01-31 16:04:35,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.593607305936073 [2024-01-31 16:04:35,915 INFO L175 Difference]: Start difference. First operand has 320 places, 566 transitions, 13299 flow. Second operand 6 states and 260 transitions. [2024-01-31 16:04:35,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 602 transitions, 14927 flow [2024-01-31 16:04:36,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 602 transitions, 14734 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-01-31 16:04:36,334 INFO L231 Difference]: Finished difference. Result has 325 places, 568 transitions, 13591 flow [2024-01-31 16:04:36,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=13107, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=13591, PETRI_PLACES=325, PETRI_TRANSITIONS=568} [2024-01-31 16:04:36,335 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 248 predicate places. [2024-01-31 16:04:36,335 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 568 transitions, 13591 flow [2024-01-31 16:04:36,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.857142857142854) internal successors, (230), 7 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:36,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:36,336 INFO L208 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 16:04:36,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-01-31 16:04:36,336 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:36,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:36,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1867419106, now seen corresponding path program 5 times [2024-01-31 16:04:36,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:36,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839628307] [2024-01-31 16:04:36,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:36,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:36,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:36,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:36,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:36,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839628307] [2024-01-31 16:04:36,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839628307] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:36,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:36,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:36,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688067769] [2024-01-31 16:04:36,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:36,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:36,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:36,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:36,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:36,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:04:36,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 568 transitions, 13591 flow. Second operand has 7 states, 7 states have (on average 32.857142857142854) internal successors, (230), 7 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:36,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:36,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:04:36,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:37,679 INFO L124 PetriNetUnfolderBase]: 1955/4123 cut-off events. [2024-01-31 16:04:37,679 INFO L125 PetriNetUnfolderBase]: For 167468/167747 co-relation queries the response was YES. [2024-01-31 16:04:37,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37740 conditions, 4123 events. 1955/4123 cut-off events. For 167468/167747 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 32058 event pairs, 306 based on Foata normal form. 21/3968 useless extension candidates. Maximal degree in co-relation 37615. Up to 1596 conditions per place. [2024-01-31 16:04:37,736 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 319 selfloop transitions, 212 changer transitions 2/601 dead transitions. [2024-01-31 16:04:37,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 601 transitions, 15087 flow [2024-01-31 16:04:37,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:37,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:37,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 261 transitions. [2024-01-31 16:04:37,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5958904109589042 [2024-01-31 16:04:37,738 INFO L175 Difference]: Start difference. First operand has 325 places, 568 transitions, 13591 flow. Second operand 6 states and 261 transitions. [2024-01-31 16:04:37,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 601 transitions, 15087 flow [2024-01-31 16:04:38,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 601 transitions, 14517 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-01-31 16:04:38,243 INFO L231 Difference]: Finished difference. Result has 324 places, 569 transitions, 13489 flow [2024-01-31 16:04:38,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=13023, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=13489, PETRI_PLACES=324, PETRI_TRANSITIONS=569} [2024-01-31 16:04:38,244 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 247 predicate places. [2024-01-31 16:04:38,244 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 569 transitions, 13489 flow [2024-01-31 16:04:38,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.857142857142854) internal successors, (230), 7 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:38,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:38,244 INFO L208 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 16:04:38,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-01-31 16:04:38,244 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 16:04:38,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:38,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1332153790, now seen corresponding path program 1 times [2024-01-31 16:04:38,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:38,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052740637] [2024-01-31 16:04:38,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:38,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:38,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:38,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:38,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:38,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052740637] [2024-01-31 16:04:38,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052740637] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:38,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:38,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:38,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638385570] [2024-01-31 16:04:38,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:38,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:38,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:38,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:38,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:38,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:04:38,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 569 transitions, 13489 flow. Second operand has 7 states, 7 states have (on average 32.857142857142854) internal successors, (230), 7 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:38,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:38,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:04:38,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:39,644 INFO L124 PetriNetUnfolderBase]: 1967/4106 cut-off events. [2024-01-31 16:04:39,644 INFO L125 PetriNetUnfolderBase]: For 164753/165054 co-relation queries the response was YES. [2024-01-31 16:04:39,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37296 conditions, 4106 events. 1967/4106 cut-off events. For 164753/165054 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 31727 event pairs, 450 based on Foata normal form. 37/3940 useless extension candidates. Maximal degree in co-relation 37173. Up to 1614 conditions per place. [2024-01-31 16:04:39,705 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 336 selfloop transitions, 199 changer transitions 2/605 dead transitions. [2024-01-31 16:04:39,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 605 transitions, 15050 flow [2024-01-31 16:04:39,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:39,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:39,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 262 transitions. [2024-01-31 16:04:39,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5981735159817352 [2024-01-31 16:04:39,706 INFO L175 Difference]: Start difference. First operand has 324 places, 569 transitions, 13489 flow. Second operand 6 states and 262 transitions. [2024-01-31 16:04:39,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 605 transitions, 15050 flow [2024-01-31 16:04:40,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 605 transitions, 14735 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-01-31 16:04:40,128 INFO L231 Difference]: Finished difference. Result has 325 places, 570 transitions, 13597 flow [2024-01-31 16:04:40,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=13175, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=13597, PETRI_PLACES=325, PETRI_TRANSITIONS=570} [2024-01-31 16:04:40,129 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 248 predicate places. [2024-01-31 16:04:40,129 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 570 transitions, 13597 flow [2024-01-31 16:04:40,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.857142857142854) internal successors, (230), 7 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:40,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:40,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:40,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-01-31 16:04:40,130 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:40,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:40,131 INFO L85 PathProgramCache]: Analyzing trace with hash -49148127, now seen corresponding path program 2 times [2024-01-31 16:04:40,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:40,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296797629] [2024-01-31 16:04:40,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:40,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:40,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:40,367 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 16:04:40,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:40,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296797629] [2024-01-31 16:04:40,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296797629] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:40,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:40,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:40,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318451631] [2024-01-31 16:04:40,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:40,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:40,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:40,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:40,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:40,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:40,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 570 transitions, 13597 flow. Second operand has 8 states, 8 states have (on average 23.0) internal successors, (184), 8 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:40,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:40,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:40,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:41,772 INFO L124 PetriNetUnfolderBase]: 2356/4671 cut-off events. [2024-01-31 16:04:41,773 INFO L125 PetriNetUnfolderBase]: For 162021/162147 co-relation queries the response was YES. [2024-01-31 16:04:41,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41322 conditions, 4671 events. 2356/4671 cut-off events. For 162021/162147 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 34457 event pairs, 312 based on Foata normal form. 27/4626 useless extension candidates. Maximal degree in co-relation 41200. Up to 1896 conditions per place. [2024-01-31 16:04:41,854 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 358 selfloop transitions, 260 changer transitions 3/646 dead transitions. [2024-01-31 16:04:41,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 646 transitions, 16058 flow [2024-01-31 16:04:41,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:04:41,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:04:41,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 286 transitions. [2024-01-31 16:04:41,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897260273972603 [2024-01-31 16:04:41,855 INFO L175 Difference]: Start difference. First operand has 325 places, 570 transitions, 13597 flow. Second operand 8 states and 286 transitions. [2024-01-31 16:04:41,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 646 transitions, 16058 flow [2024-01-31 16:04:42,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 646 transitions, 15791 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-01-31 16:04:42,380 INFO L231 Difference]: Finished difference. Result has 333 places, 594 transitions, 14533 flow [2024-01-31 16:04:42,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=13341, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=236, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14533, PETRI_PLACES=333, PETRI_TRANSITIONS=594} [2024-01-31 16:04:42,381 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 256 predicate places. [2024-01-31 16:04:42,382 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 594 transitions, 14533 flow [2024-01-31 16:04:42,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.0) internal successors, (184), 8 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:42,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:42,382 INFO L208 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 16:04:42,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-01-31 16:04:42,382 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:42,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:42,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1800956065, now seen corresponding path program 3 times [2024-01-31 16:04:42,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:42,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172405264] [2024-01-31 16:04:42,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:42,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:42,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:42,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:42,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:42,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172405264] [2024-01-31 16:04:42,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172405264] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:42,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:42,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:42,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436292910] [2024-01-31 16:04:42,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:42,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:42,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:42,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:42,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:42,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:42,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 594 transitions, 14533 flow. Second operand has 8 states, 8 states have (on average 23.0) internal successors, (184), 8 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:42,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:42,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:42,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:44,008 INFO L124 PetriNetUnfolderBase]: 2415/4776 cut-off events. [2024-01-31 16:04:44,008 INFO L125 PetriNetUnfolderBase]: For 177940/178090 co-relation queries the response was YES. [2024-01-31 16:04:44,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44225 conditions, 4776 events. 2415/4776 cut-off events. For 177940/178090 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 35315 event pairs, 312 based on Foata normal form. 35/4739 useless extension candidates. Maximal degree in co-relation 44100. Up to 1913 conditions per place. [2024-01-31 16:04:44,072 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 351 selfloop transitions, 273 changer transitions 2/651 dead transitions. [2024-01-31 16:04:44,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 651 transitions, 16734 flow [2024-01-31 16:04:44,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:04:44,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:04:44,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 287 transitions. [2024-01-31 16:04:44,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4914383561643836 [2024-01-31 16:04:44,074 INFO L175 Difference]: Start difference. First operand has 333 places, 594 transitions, 14533 flow. Second operand 8 states and 287 transitions. [2024-01-31 16:04:44,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 651 transitions, 16734 flow [2024-01-31 16:04:44,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 651 transitions, 16405 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-01-31 16:04:44,599 INFO L231 Difference]: Finished difference. Result has 338 places, 603 transitions, 15096 flow [2024-01-31 16:04:44,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=14217, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=264, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15096, PETRI_PLACES=338, PETRI_TRANSITIONS=603} [2024-01-31 16:04:44,599 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 261 predicate places. [2024-01-31 16:04:44,599 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 603 transitions, 15096 flow [2024-01-31 16:04:44,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.0) internal successors, (184), 8 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:44,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:44,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:44,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-01-31 16:04:44,600 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:44,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:44,601 INFO L85 PathProgramCache]: Analyzing trace with hash 2112538303, now seen corresponding path program 4 times [2024-01-31 16:04:44,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:44,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115700182] [2024-01-31 16:04:44,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:44,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:44,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:44,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:44,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:44,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115700182] [2024-01-31 16:04:44,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115700182] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:44,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:44,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:44,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495809511] [2024-01-31 16:04:44,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:44,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:44,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:44,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:44,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:44,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:44,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 603 transitions, 15096 flow. Second operand has 8 states, 8 states have (on average 23.0) internal successors, (184), 8 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:44,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:44,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:44,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:46,130 INFO L124 PetriNetUnfolderBase]: 2463/4855 cut-off events. [2024-01-31 16:04:46,130 INFO L125 PetriNetUnfolderBase]: For 187644/187794 co-relation queries the response was YES. [2024-01-31 16:04:46,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45865 conditions, 4855 events. 2463/4855 cut-off events. For 187644/187794 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 35838 event pairs, 325 based on Foata normal form. 27/4810 useless extension candidates. Maximal degree in co-relation 45738. Up to 1929 conditions per place. [2024-01-31 16:04:46,207 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 358 selfloop transitions, 272 changer transitions 3/658 dead transitions. [2024-01-31 16:04:46,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 658 transitions, 17253 flow [2024-01-31 16:04:46,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:04:46,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:04:46,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 277 transitions. [2024-01-31 16:04:46,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4743150684931507 [2024-01-31 16:04:46,208 INFO L175 Difference]: Start difference. First operand has 338 places, 603 transitions, 15096 flow. Second operand 8 states and 277 transitions. [2024-01-31 16:04:46,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 658 transitions, 17253 flow [2024-01-31 16:04:46,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 658 transitions, 16940 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-01-31 16:04:46,816 INFO L231 Difference]: Finished difference. Result has 345 places, 617 transitions, 15885 flow [2024-01-31 16:04:46,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=14792, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15885, PETRI_PLACES=345, PETRI_TRANSITIONS=617} [2024-01-31 16:04:46,817 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 268 predicate places. [2024-01-31 16:04:46,817 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 617 transitions, 15885 flow [2024-01-31 16:04:46,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.0) internal successors, (184), 8 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:46,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:46,817 INFO L208 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 16:04:46,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-01-31 16:04:46,818 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:46,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:46,818 INFO L85 PathProgramCache]: Analyzing trace with hash -2138472193, now seen corresponding path program 1 times [2024-01-31 16:04:46,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:46,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425942608] [2024-01-31 16:04:46,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:46,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:46,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:47,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:47,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:47,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425942608] [2024-01-31 16:04:47,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425942608] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:47,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:47,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:47,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843540351] [2024-01-31 16:04:47,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:47,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:47,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:47,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:47,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:47,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:47,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 617 transitions, 15885 flow. Second operand has 8 states, 8 states have (on average 23.0) internal successors, (184), 8 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:47,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:47,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:47,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:48,635 INFO L124 PetriNetUnfolderBase]: 2755/5403 cut-off events. [2024-01-31 16:04:48,636 INFO L125 PetriNetUnfolderBase]: For 233387/233693 co-relation queries the response was YES. [2024-01-31 16:04:48,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53857 conditions, 5403 events. 2755/5403 cut-off events. For 233387/233693 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 39664 event pairs, 352 based on Foata normal form. 33/5233 useless extension candidates. Maximal degree in co-relation 53727. Up to 2144 conditions per place. [2024-01-31 16:04:48,725 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 384 selfloop transitions, 213 changer transitions 1/655 dead transitions. [2024-01-31 16:04:48,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 655 transitions, 17595 flow [2024-01-31 16:04:48,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:48,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:48,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 238 transitions. [2024-01-31 16:04:48,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4657534246575342 [2024-01-31 16:04:48,727 INFO L175 Difference]: Start difference. First operand has 345 places, 617 transitions, 15885 flow. Second operand 7 states and 238 transitions. [2024-01-31 16:04:48,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 655 transitions, 17595 flow [2024-01-31 16:04:49,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 655 transitions, 16799 flow, removed 148 selfloop flow, removed 7 redundant places. [2024-01-31 16:04:49,478 INFO L231 Difference]: Finished difference. Result has 345 places, 617 transitions, 15605 flow [2024-01-31 16:04:49,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=15153, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15605, PETRI_PLACES=345, PETRI_TRANSITIONS=617} [2024-01-31 16:04:49,479 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 268 predicate places. [2024-01-31 16:04:49,479 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 617 transitions, 15605 flow [2024-01-31 16:04:49,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.0) internal successors, (184), 8 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:49,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:49,479 INFO L208 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 16:04:49,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-01-31 16:04:49,480 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:49,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:49,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1055344001, now seen corresponding path program 2 times [2024-01-31 16:04:49,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:49,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828799278] [2024-01-31 16:04:49,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:49,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:49,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:49,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:49,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:49,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828799278] [2024-01-31 16:04:49,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828799278] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:49,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:49,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:49,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174898273] [2024-01-31 16:04:49,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:49,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:49,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:49,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:49,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:49,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:49,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 617 transitions, 15605 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 16:04:49,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:49,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:49,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:51,767 INFO L124 PetriNetUnfolderBase]: 2916/5667 cut-off events. [2024-01-31 16:04:51,767 INFO L125 PetriNetUnfolderBase]: For 232628/232936 co-relation queries the response was YES. [2024-01-31 16:04:51,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54946 conditions, 5667 events. 2916/5667 cut-off events. For 232628/232936 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 41852 event pairs, 720 based on Foata normal form. 27/5451 useless extension candidates. Maximal degree in co-relation 54816. Up to 3909 conditions per place. [2024-01-31 16:04:51,843 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 494 selfloop transitions, 140 changer transitions 0/691 dead transitions. [2024-01-31 16:04:51,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 691 transitions, 18088 flow [2024-01-31 16:04:51,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:04:51,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:04:51,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 292 transitions. [2024-01-31 16:04:51,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-01-31 16:04:51,844 INFO L175 Difference]: Start difference. First operand has 345 places, 617 transitions, 15605 flow. Second operand 9 states and 292 transitions. [2024-01-31 16:04:51,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 691 transitions, 18088 flow [2024-01-31 16:04:52,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 691 transitions, 17630 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-31 16:04:52,490 INFO L231 Difference]: Finished difference. Result has 349 places, 636 transitions, 15948 flow [2024-01-31 16:04:52,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=15179, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15948, PETRI_PLACES=349, PETRI_TRANSITIONS=636} [2024-01-31 16:04:52,490 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 272 predicate places. [2024-01-31 16:04:52,490 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 636 transitions, 15948 flow [2024-01-31 16:04:52,491 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 16:04:52,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:52,491 INFO L208 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 16:04:52,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-01-31 16:04:52,491 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:52,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:52,491 INFO L85 PathProgramCache]: Analyzing trace with hash 889562707, now seen corresponding path program 3 times [2024-01-31 16:04:52,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:52,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977391052] [2024-01-31 16:04:52,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:52,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:52,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:52,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:52,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:52,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977391052] [2024-01-31 16:04:52,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977391052] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:52,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:52,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:52,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035817231] [2024-01-31 16:04:52,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:52,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:52,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:52,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:52,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:52,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:52,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 636 transitions, 15948 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 16:04:52,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:52,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:52,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:54,546 INFO L124 PetriNetUnfolderBase]: 2890/5627 cut-off events. [2024-01-31 16:04:54,546 INFO L125 PetriNetUnfolderBase]: For 228216/228520 co-relation queries the response was YES. [2024-01-31 16:04:54,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54446 conditions, 5627 events. 2890/5627 cut-off events. For 228216/228520 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 41602 event pairs, 731 based on Foata normal form. 23/5403 useless extension candidates. Maximal degree in co-relation 54314. Up to 4152 conditions per place. [2024-01-31 16:04:54,629 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 491 selfloop transitions, 123 changer transitions 0/671 dead transitions. [2024-01-31 16:04:54,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 671 transitions, 17573 flow [2024-01-31 16:04:54,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:04:54,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:04:54,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 284 transitions. [2024-01-31 16:04:54,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4322678843226788 [2024-01-31 16:04:54,631 INFO L175 Difference]: Start difference. First operand has 349 places, 636 transitions, 15948 flow. Second operand 9 states and 284 transitions. [2024-01-31 16:04:54,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 671 transitions, 17573 flow [2024-01-31 16:04:55,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 671 transitions, 17256 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-01-31 16:04:55,434 INFO L231 Difference]: Finished difference. Result has 351 places, 636 transitions, 15890 flow [2024-01-31 16:04:55,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=15631, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=636, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15890, PETRI_PLACES=351, PETRI_TRANSITIONS=636} [2024-01-31 16:04:55,435 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 274 predicate places. [2024-01-31 16:04:55,436 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 636 transitions, 15890 flow [2024-01-31 16:04:55,436 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 16:04:55,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:55,436 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 16:04:55,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-01-31 16:04:55,437 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:55,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:55,437 INFO L85 PathProgramCache]: Analyzing trace with hash -2059694396, now seen corresponding path program 5 times [2024-01-31 16:04:55,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:55,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537211334] [2024-01-31 16:04:55,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:55,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:55,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:55,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:55,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537211334] [2024-01-31 16:04:55,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537211334] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:55,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:55,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:04:55,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105144620] [2024-01-31 16:04:55,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:55,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:55,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:55,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:55,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:55,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:55,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 636 transitions, 15890 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 16:04:55,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:55,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:55,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:57,198 INFO L124 PetriNetUnfolderBase]: 2532/4994 cut-off events. [2024-01-31 16:04:57,198 INFO L125 PetriNetUnfolderBase]: For 191385/191539 co-relation queries the response was YES. [2024-01-31 16:04:57,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46989 conditions, 4994 events. 2532/4994 cut-off events. For 191385/191539 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 37498 event pairs, 567 based on Foata normal form. 93/5012 useless extension candidates. Maximal degree in co-relation 46856. Up to 2587 conditions per place. [2024-01-31 16:04:57,279 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 474 selfloop transitions, 175 changer transitions 9/683 dead transitions. [2024-01-31 16:04:57,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 683 transitions, 17929 flow [2024-01-31 16:04:57,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:04:57,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:04:57,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 267 transitions. [2024-01-31 16:04:57,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4571917808219178 [2024-01-31 16:04:57,280 INFO L175 Difference]: Start difference. First operand has 351 places, 636 transitions, 15890 flow. Second operand 8 states and 267 transitions. [2024-01-31 16:04:57,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 683 transitions, 17929 flow [2024-01-31 16:04:57,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 683 transitions, 17627 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-01-31 16:04:57,946 INFO L231 Difference]: Finished difference. Result has 348 places, 633 transitions, 15929 flow [2024-01-31 16:04:57,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=15567, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15929, PETRI_PLACES=348, PETRI_TRANSITIONS=633} [2024-01-31 16:04:57,947 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 271 predicate places. [2024-01-31 16:04:57,947 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 633 transitions, 15929 flow [2024-01-31 16:04:57,947 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 16:04:57,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:57,948 INFO L208 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 16:04:57,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-01-31 16:04:57,948 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:57,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:57,948 INFO L85 PathProgramCache]: Analyzing trace with hash 355616618, now seen corresponding path program 1 times [2024-01-31 16:04:57,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:57,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958793938] [2024-01-31 16:04:57,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:57,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:57,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:58,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:58,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:58,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958793938] [2024-01-31 16:04:58,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958793938] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:58,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:58,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:58,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344113252] [2024-01-31 16:04:58,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:58,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:58,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:58,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:58,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:58,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:58,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 633 transitions, 15929 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 16:04:58,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:58,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:58,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:00,033 INFO L124 PetriNetUnfolderBase]: 2836/5503 cut-off events. [2024-01-31 16:05:00,033 INFO L125 PetriNetUnfolderBase]: For 231513/231826 co-relation queries the response was YES. [2024-01-31 16:05:00,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53402 conditions, 5503 events. 2836/5503 cut-off events. For 231513/231826 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 40611 event pairs, 727 based on Foata normal form. 21/5277 useless extension candidates. Maximal degree in co-relation 53273. Up to 4133 conditions per place. [2024-01-31 16:05:00,097 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 464 selfloop transitions, 136 changer transitions 0/654 dead transitions. [2024-01-31 16:05:00,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 654 transitions, 17351 flow [2024-01-31 16:05:00,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:00,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:00,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 224 transitions. [2024-01-31 16:05:00,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4383561643835616 [2024-01-31 16:05:00,099 INFO L175 Difference]: Start difference. First operand has 348 places, 633 transitions, 15929 flow. Second operand 7 states and 224 transitions. [2024-01-31 16:05:00,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 654 transitions, 17351 flow [2024-01-31 16:05:00,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 654 transitions, 17148 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-31 16:05:00,766 INFO L231 Difference]: Finished difference. Result has 350 places, 635 transitions, 16044 flow [2024-01-31 16:05:00,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=15730, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16044, PETRI_PLACES=350, PETRI_TRANSITIONS=635} [2024-01-31 16:05:00,767 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 273 predicate places. [2024-01-31 16:05:00,767 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 635 transitions, 16044 flow [2024-01-31 16:05:00,767 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 16:05:00,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:00,767 INFO L208 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 16:05:00,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-01-31 16:05:00,768 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:00,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:00,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1008470164, now seen corresponding path program 2 times [2024-01-31 16:05:00,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:00,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537941244] [2024-01-31 16:05:00,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:00,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:00,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:00,996 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 16:05:00,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:00,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537941244] [2024-01-31 16:05:00,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537941244] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:00,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:00,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:00,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940721861] [2024-01-31 16:05:00,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:00,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:00,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:00,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:00,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:01,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:01,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 635 transitions, 16044 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 16:05:01,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:01,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:01,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:02,558 INFO L124 PetriNetUnfolderBase]: 2842/5516 cut-off events. [2024-01-31 16:05:02,558 INFO L125 PetriNetUnfolderBase]: For 230336/230651 co-relation queries the response was YES. [2024-01-31 16:05:02,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53665 conditions, 5516 events. 2842/5516 cut-off events. For 230336/230651 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 40858 event pairs, 743 based on Foata normal form. 25/5294 useless extension candidates. Maximal degree in co-relation 53535. Up to 4143 conditions per place. [2024-01-31 16:05:02,637 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 481 selfloop transitions, 124 changer transitions 0/659 dead transitions. [2024-01-31 16:05:02,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 659 transitions, 17483 flow [2024-01-31 16:05:02,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:02,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:02,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 221 transitions. [2024-01-31 16:05:02,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4324853228962818 [2024-01-31 16:05:02,638 INFO L175 Difference]: Start difference. First operand has 350 places, 635 transitions, 16044 flow. Second operand 7 states and 221 transitions. [2024-01-31 16:05:02,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 659 transitions, 17483 flow [2024-01-31 16:05:03,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 659 transitions, 17354 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-01-31 16:05:03,312 INFO L231 Difference]: Finished difference. Result has 353 places, 638 transitions, 16222 flow [2024-01-31 16:05:03,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=15918, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16222, PETRI_PLACES=353, PETRI_TRANSITIONS=638} [2024-01-31 16:05:03,312 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 276 predicate places. [2024-01-31 16:05:03,313 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 638 transitions, 16222 flow [2024-01-31 16:05:03,313 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 16:05:03,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:03,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:03,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-01-31 16:05:03,313 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:03,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:03,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1350161830, now seen corresponding path program 2 times [2024-01-31 16:05:03,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:03,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071531716] [2024-01-31 16:05:03,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:03,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:03,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:03,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:03,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071531716] [2024-01-31 16:05:03,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071531716] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:03,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:03,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:03,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635362286] [2024-01-31 16:05:03,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:03,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:05:03,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:03,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:05:03,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:05:03,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:05:03,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 638 transitions, 16222 flow. Second operand has 7 states, 7 states have (on average 32.857142857142854) internal successors, (230), 7 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:03,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:03,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:05:03,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:04,710 INFO L124 PetriNetUnfolderBase]: 2065/4333 cut-off events. [2024-01-31 16:05:04,710 INFO L125 PetriNetUnfolderBase]: For 197111/197254 co-relation queries the response was YES. [2024-01-31 16:05:04,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42525 conditions, 4333 events. 2065/4333 cut-off events. For 197111/197254 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 34181 event pairs, 422 based on Foata normal form. 24/4132 useless extension candidates. Maximal degree in co-relation 42395. Up to 1562 conditions per place. [2024-01-31 16:05:04,767 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 360 selfloop transitions, 241 changer transitions 1/673 dead transitions. [2024-01-31 16:05:04,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 673 transitions, 17947 flow [2024-01-31 16:05:04,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:05:04,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:05:04,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 265 transitions. [2024-01-31 16:05:04,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6050228310502284 [2024-01-31 16:05:04,768 INFO L175 Difference]: Start difference. First operand has 353 places, 638 transitions, 16222 flow. Second operand 6 states and 265 transitions. [2024-01-31 16:05:04,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 673 transitions, 17947 flow [2024-01-31 16:05:05,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 673 transitions, 17815 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-01-31 16:05:05,280 INFO L231 Difference]: Finished difference. Result has 357 places, 641 transitions, 16767 flow [2024-01-31 16:05:05,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=16090, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=16767, PETRI_PLACES=357, PETRI_TRANSITIONS=641} [2024-01-31 16:05:05,281 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 280 predicate places. [2024-01-31 16:05:05,282 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 641 transitions, 16767 flow [2024-01-31 16:05:05,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.857142857142854) internal successors, (230), 7 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:05,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:05,282 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 16:05:05,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-01-31 16:05:05,282 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:05,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:05,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1371933566, now seen corresponding path program 3 times [2024-01-31 16:05:05,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:05,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623355317] [2024-01-31 16:05:05,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:05,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:05,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:05,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:05,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:05,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623355317] [2024-01-31 16:05:05,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623355317] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:05,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:05,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:05,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937059483] [2024-01-31 16:05:05,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:05,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:05:05,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:05,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:05:05,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:05:05,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:05:05,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 641 transitions, 16767 flow. Second operand has 7 states, 7 states have (on average 32.857142857142854) internal successors, (230), 7 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:05,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:05,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:05:05,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:06,656 INFO L124 PetriNetUnfolderBase]: 2042/4290 cut-off events. [2024-01-31 16:05:06,656 INFO L125 PetriNetUnfolderBase]: For 204020/204176 co-relation queries the response was YES. [2024-01-31 16:05:06,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42887 conditions, 4290 events. 2042/4290 cut-off events. For 204020/204176 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 33748 event pairs, 327 based on Foata normal form. 29/4083 useless extension candidates. Maximal degree in co-relation 42755. Up to 1558 conditions per place. [2024-01-31 16:05:06,716 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 369 selfloop transitions, 217 changer transitions 1/658 dead transitions. [2024-01-31 16:05:06,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 658 transitions, 18125 flow [2024-01-31 16:05:06,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:05:06,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:05:06,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 251 transitions. [2024-01-31 16:05:06,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5730593607305936 [2024-01-31 16:05:06,717 INFO L175 Difference]: Start difference. First operand has 357 places, 641 transitions, 16767 flow. Second operand 6 states and 251 transitions. [2024-01-31 16:05:06,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 658 transitions, 18125 flow [2024-01-31 16:05:07,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 658 transitions, 17440 flow, removed 5 selfloop flow, removed 16 redundant places. [2024-01-31 16:05:07,227 INFO L231 Difference]: Finished difference. Result has 345 places, 640 transitions, 16470 flow [2024-01-31 16:05:07,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=16036, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=16470, PETRI_PLACES=345, PETRI_TRANSITIONS=640} [2024-01-31 16:05:07,228 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 268 predicate places. [2024-01-31 16:05:07,228 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 640 transitions, 16470 flow [2024-01-31 16:05:07,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.857142857142854) internal successors, (230), 7 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:07,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:07,229 INFO L208 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 16:05:07,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-01-31 16:05:07,229 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:07,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:07,229 INFO L85 PathProgramCache]: Analyzing trace with hash 585471843, now seen corresponding path program 4 times [2024-01-31 16:05:07,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:07,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636937145] [2024-01-31 16:05:07,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:07,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:07,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:07,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:07,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:07,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636937145] [2024-01-31 16:05:07,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636937145] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:07,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:07,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:07,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314117451] [2024-01-31 16:05:07,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:07,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:07,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:07,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:07,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:07,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:07,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 640 transitions, 16470 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 16:05:07,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:07,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:07,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:09,233 INFO L124 PetriNetUnfolderBase]: 3382/6433 cut-off events. [2024-01-31 16:05:09,233 INFO L125 PetriNetUnfolderBase]: For 279622/279993 co-relation queries the response was YES. [2024-01-31 16:05:09,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63886 conditions, 6433 events. 3382/6433 cut-off events. For 279622/279993 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 48261 event pairs, 624 based on Foata normal form. 76/6233 useless extension candidates. Maximal degree in co-relation 63768. Up to 4273 conditions per place. [2024-01-31 16:05:09,322 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 532 selfloop transitions, 175 changer transitions 2/763 dead transitions. [2024-01-31 16:05:09,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 763 transitions, 21014 flow [2024-01-31 16:05:09,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:05:09,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:05:09,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 292 transitions. [2024-01-31 16:05:09,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-01-31 16:05:09,324 INFO L175 Difference]: Start difference. First operand has 345 places, 640 transitions, 16470 flow. Second operand 9 states and 292 transitions. [2024-01-31 16:05:09,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 763 transitions, 21014 flow [2024-01-31 16:05:10,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 763 transitions, 20523 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-01-31 16:05:10,084 INFO L231 Difference]: Finished difference. Result has 352 places, 697 transitions, 18561 flow [2024-01-31 16:05:10,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=16062, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18561, PETRI_PLACES=352, PETRI_TRANSITIONS=697} [2024-01-31 16:05:10,084 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 275 predicate places. [2024-01-31 16:05:10,084 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 697 transitions, 18561 flow [2024-01-31 16:05:10,084 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 16:05:10,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:10,084 INFO L208 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 16:05:10,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-01-31 16:05:10,085 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:10,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:10,085 INFO L85 PathProgramCache]: Analyzing trace with hash -607498025, now seen corresponding path program 5 times [2024-01-31 16:05:10,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:10,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636868317] [2024-01-31 16:05:10,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:10,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:10,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:10,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:10,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:10,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636868317] [2024-01-31 16:05:10,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636868317] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:10,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:10,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:10,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310926615] [2024-01-31 16:05:10,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:10,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:10,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:10,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:10,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:10,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:10,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 697 transitions, 18561 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 16:05:10,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:10,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:10,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:12,276 INFO L124 PetriNetUnfolderBase]: 3352/6390 cut-off events. [2024-01-31 16:05:12,276 INFO L125 PetriNetUnfolderBase]: For 285979/286307 co-relation queries the response was YES. [2024-01-31 16:05:12,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63461 conditions, 6390 events. 3352/6390 cut-off events. For 285979/286307 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 48018 event pairs, 700 based on Foata normal form. 22/6129 useless extension candidates. Maximal degree in co-relation 63340. Up to 4879 conditions per place. [2024-01-31 16:05:12,354 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 550 selfloop transitions, 129 changer transitions 0/733 dead transitions. [2024-01-31 16:05:12,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 733 transitions, 20336 flow [2024-01-31 16:05:12,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:05:12,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:05:12,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 282 transitions. [2024-01-31 16:05:12,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4292237442922374 [2024-01-31 16:05:12,355 INFO L175 Difference]: Start difference. First operand has 352 places, 697 transitions, 18561 flow. Second operand 9 states and 282 transitions. [2024-01-31 16:05:12,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 733 transitions, 20336 flow [2024-01-31 16:05:13,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 733 transitions, 20091 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-01-31 16:05:13,160 INFO L231 Difference]: Finished difference. Result has 357 places, 697 transitions, 18586 flow [2024-01-31 16:05:13,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=18316, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=568, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18586, PETRI_PLACES=357, PETRI_TRANSITIONS=697} [2024-01-31 16:05:13,162 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 280 predicate places. [2024-01-31 16:05:13,162 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 697 transitions, 18586 flow [2024-01-31 16:05:13,162 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 16:05:13,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:13,162 INFO L208 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 16:05:13,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-01-31 16:05:13,163 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:13,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:13,163 INFO L85 PathProgramCache]: Analyzing trace with hash 420291475, now seen corresponding path program 6 times [2024-01-31 16:05:13,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:13,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809876965] [2024-01-31 16:05:13,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:13,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:13,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:13,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:13,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809876965] [2024-01-31 16:05:13,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809876965] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:13,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:13,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:13,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303073004] [2024-01-31 16:05:13,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:13,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:13,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:13,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:13,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:13,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:13,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 697 transitions, 18586 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 16:05:13,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:13,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:13,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:15,254 INFO L124 PetriNetUnfolderBase]: 3330/6350 cut-off events. [2024-01-31 16:05:15,254 INFO L125 PetriNetUnfolderBase]: For 287791/288119 co-relation queries the response was YES. [2024-01-31 16:05:15,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62996 conditions, 6350 events. 3330/6350 cut-off events. For 287791/288119 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 47681 event pairs, 689 based on Foata normal form. 26/6093 useless extension candidates. Maximal degree in co-relation 62874. Up to 4825 conditions per place. [2024-01-31 16:05:15,345 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 549 selfloop transitions, 129 changer transitions 0/732 dead transitions. [2024-01-31 16:05:15,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 732 transitions, 20362 flow [2024-01-31 16:05:15,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:05:15,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:05:15,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 279 transitions. [2024-01-31 16:05:15,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4246575342465753 [2024-01-31 16:05:15,346 INFO L175 Difference]: Start difference. First operand has 357 places, 697 transitions, 18586 flow. Second operand 9 states and 279 transitions. [2024-01-31 16:05:15,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 732 transitions, 20362 flow [2024-01-31 16:05:16,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 732 transitions, 20092 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-01-31 16:05:16,380 INFO L231 Difference]: Finished difference. Result has 359 places, 697 transitions, 18588 flow [2024-01-31 16:05:16,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=18316, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=568, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18588, PETRI_PLACES=359, PETRI_TRANSITIONS=697} [2024-01-31 16:05:16,381 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 282 predicate places. [2024-01-31 16:05:16,381 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 697 transitions, 18588 flow [2024-01-31 16:05:16,381 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 16:05:16,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:16,381 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 16:05:16,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-01-31 16:05:16,381 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:16,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:16,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1344812822, now seen corresponding path program 3 times [2024-01-31 16:05:16,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:16,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094181204] [2024-01-31 16:05:16,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:16,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:16,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:16,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:16,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:16,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094181204] [2024-01-31 16:05:16,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094181204] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:16,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:16,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:16,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627646362] [2024-01-31 16:05:16,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:16,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:16,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:16,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:16,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:16,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:16,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 697 transitions, 18588 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 16:05:16,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:16,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:16,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:18,502 INFO L124 PetriNetUnfolderBase]: 3337/6349 cut-off events. [2024-01-31 16:05:18,502 INFO L125 PetriNetUnfolderBase]: For 290801/291095 co-relation queries the response was YES. [2024-01-31 16:05:18,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62987 conditions, 6349 events. 3337/6349 cut-off events. For 290801/291095 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 47548 event pairs, 784 based on Foata normal form. 8/6060 useless extension candidates. Maximal degree in co-relation 62864. Up to 4931 conditions per place. [2024-01-31 16:05:18,583 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 549 selfloop transitions, 107 changer transitions 0/710 dead transitions. [2024-01-31 16:05:18,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 710 transitions, 20001 flow [2024-01-31 16:05:18,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:05:18,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:05:18,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2024-01-31 16:05:18,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4223744292237443 [2024-01-31 16:05:18,584 INFO L175 Difference]: Start difference. First operand has 359 places, 697 transitions, 18588 flow. Second operand 6 states and 185 transitions. [2024-01-31 16:05:18,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 710 transitions, 20001 flow [2024-01-31 16:05:19,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 710 transitions, 19725 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-31 16:05:19,460 INFO L231 Difference]: Finished difference. Result has 356 places, 699 transitions, 18594 flow [2024-01-31 16:05:19,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=18302, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=591, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=18594, PETRI_PLACES=356, PETRI_TRANSITIONS=699} [2024-01-31 16:05:19,460 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 279 predicate places. [2024-01-31 16:05:19,461 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 699 transitions, 18594 flow [2024-01-31 16:05:19,461 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 16:05:19,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:19,461 INFO L208 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 16:05:19,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-01-31 16:05:19,461 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:19,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:19,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1345580567, now seen corresponding path program 7 times [2024-01-31 16:05:19,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:19,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458333266] [2024-01-31 16:05:19,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:19,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:19,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:19,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:19,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:19,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458333266] [2024-01-31 16:05:19,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458333266] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:19,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:19,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:19,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977650480] [2024-01-31 16:05:19,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:19,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:19,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:19,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:19,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:19,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:19,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 699 transitions, 18594 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 16:05:19,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:19,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:19,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:21,570 INFO L124 PetriNetUnfolderBase]: 3313/6346 cut-off events. [2024-01-31 16:05:21,571 INFO L125 PetriNetUnfolderBase]: For 287628/287928 co-relation queries the response was YES. [2024-01-31 16:05:21,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63103 conditions, 6346 events. 3313/6346 cut-off events. For 287628/287928 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 47519 event pairs, 349 based on Foata normal form. 24/6113 useless extension candidates. Maximal degree in co-relation 62982. Up to 3316 conditions per place. [2024-01-31 16:05:21,657 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 397 selfloop transitions, 286 changer transitions 0/737 dead transitions. [2024-01-31 16:05:21,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 737 transitions, 20411 flow [2024-01-31 16:05:21,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:21,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:21,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 268 transitions. [2024-01-31 16:05:21,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4589041095890411 [2024-01-31 16:05:21,658 INFO L175 Difference]: Start difference. First operand has 356 places, 699 transitions, 18594 flow. Second operand 8 states and 268 transitions. [2024-01-31 16:05:21,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 737 transitions, 20411 flow [2024-01-31 16:05:22,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 737 transitions, 20055 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-01-31 16:05:22,603 INFO L231 Difference]: Finished difference. Result has 359 places, 699 transitions, 18919 flow [2024-01-31 16:05:22,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=18240, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=699, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=286, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18919, PETRI_PLACES=359, PETRI_TRANSITIONS=699} [2024-01-31 16:05:22,604 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 282 predicate places. [2024-01-31 16:05:22,604 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 699 transitions, 18919 flow [2024-01-31 16:05:22,604 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 16:05:22,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:22,605 INFO L208 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 16:05:22,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-01-31 16:05:22,605 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:22,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:22,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1344659867, now seen corresponding path program 8 times [2024-01-31 16:05:22,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:22,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033574605] [2024-01-31 16:05:22,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:22,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:22,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:22,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:22,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:22,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033574605] [2024-01-31 16:05:22,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033574605] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:22,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:22,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:22,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808686025] [2024-01-31 16:05:22,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:22,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:22,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:22,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:22,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:22,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:22,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 699 transitions, 18919 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 16:05:22,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:22,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:22,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:24,744 INFO L124 PetriNetUnfolderBase]: 3292/6285 cut-off events. [2024-01-31 16:05:24,745 INFO L125 PetriNetUnfolderBase]: For 299199/299526 co-relation queries the response was YES. [2024-01-31 16:05:24,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63412 conditions, 6285 events. 3292/6285 cut-off events. For 299199/299526 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 47120 event pairs, 687 based on Foata normal form. 22/6026 useless extension candidates. Maximal degree in co-relation 63291. Up to 4700 conditions per place. [2024-01-31 16:05:24,808 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 520 selfloop transitions, 150 changer transitions 0/724 dead transitions. [2024-01-31 16:05:24,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 724 transitions, 20496 flow [2024-01-31 16:05:24,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:24,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:24,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 254 transitions. [2024-01-31 16:05:24,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4349315068493151 [2024-01-31 16:05:24,809 INFO L175 Difference]: Start difference. First operand has 359 places, 699 transitions, 18919 flow. Second operand 8 states and 254 transitions. [2024-01-31 16:05:24,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 724 transitions, 20496 flow [2024-01-31 16:05:25,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 724 transitions, 20141 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-01-31 16:05:25,549 INFO L231 Difference]: Finished difference. Result has 362 places, 699 transitions, 18884 flow [2024-01-31 16:05:25,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=18564, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=699, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=549, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18884, PETRI_PLACES=362, PETRI_TRANSITIONS=699} [2024-01-31 16:05:25,550 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 285 predicate places. [2024-01-31 16:05:25,550 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 699 transitions, 18884 flow [2024-01-31 16:05:25,550 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 16:05:25,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:25,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:25,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-01-31 16:05:25,550 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:25,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:25,551 INFO L85 PathProgramCache]: Analyzing trace with hash 206758377, now seen corresponding path program 9 times [2024-01-31 16:05:25,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:25,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887784536] [2024-01-31 16:05:25,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:25,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:25,743 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 16:05:25,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:25,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887784536] [2024-01-31 16:05:25,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887784536] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:25,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:25,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:25,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21967366] [2024-01-31 16:05:25,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:25,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:25,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:25,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:25,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:25,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:25,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 699 transitions, 18884 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 16:05:25,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:25,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:25,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:27,550 INFO L124 PetriNetUnfolderBase]: 3296/6281 cut-off events. [2024-01-31 16:05:27,551 INFO L125 PetriNetUnfolderBase]: For 300254/300593 co-relation queries the response was YES. [2024-01-31 16:05:27,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62994 conditions, 6281 events. 3296/6281 cut-off events. For 300254/300593 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 46997 event pairs, 656 based on Foata normal form. 36/6044 useless extension candidates. Maximal degree in co-relation 62872. Up to 4147 conditions per place. [2024-01-31 16:05:27,632 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 505 selfloop transitions, 176 changer transitions 0/735 dead transitions. [2024-01-31 16:05:27,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 735 transitions, 20729 flow [2024-01-31 16:05:27,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:27,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:27,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 259 transitions. [2024-01-31 16:05:27,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4434931506849315 [2024-01-31 16:05:27,634 INFO L175 Difference]: Start difference. First operand has 362 places, 699 transitions, 18884 flow. Second operand 8 states and 259 transitions. [2024-01-31 16:05:27,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 735 transitions, 20729 flow [2024-01-31 16:05:28,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 735 transitions, 20427 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-01-31 16:05:28,516 INFO L231 Difference]: Finished difference. Result has 363 places, 699 transitions, 18980 flow [2024-01-31 16:05:28,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=18586, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=699, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=523, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18980, PETRI_PLACES=363, PETRI_TRANSITIONS=699} [2024-01-31 16:05:28,516 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 286 predicate places. [2024-01-31 16:05:28,516 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 699 transitions, 18980 flow [2024-01-31 16:05:28,517 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 16:05:28,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:28,517 INFO L208 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 16:05:28,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-01-31 16:05:28,517 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:28,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:28,517 INFO L85 PathProgramCache]: Analyzing trace with hash -316870367, now seen corresponding path program 10 times [2024-01-31 16:05:28,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:28,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007211876] [2024-01-31 16:05:28,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:28,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:28,715 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 16:05:28,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:28,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007211876] [2024-01-31 16:05:28,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007211876] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:28,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:28,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:28,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14084225] [2024-01-31 16:05:28,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:28,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:28,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:28,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:28,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:28,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:28,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 699 transitions, 18980 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 16:05:28,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:28,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:28,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:30,503 INFO L124 PetriNetUnfolderBase]: 3339/6379 cut-off events. [2024-01-31 16:05:30,503 INFO L125 PetriNetUnfolderBase]: For 308020/308347 co-relation queries the response was YES. [2024-01-31 16:05:30,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64114 conditions, 6379 events. 3339/6379 cut-off events. For 308020/308347 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 48062 event pairs, 687 based on Foata normal form. 26/6123 useless extension candidates. Maximal degree in co-relation 63992. Up to 4766 conditions per place. [2024-01-31 16:05:30,580 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 539 selfloop transitions, 145 changer transitions 0/738 dead transitions. [2024-01-31 16:05:30,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 738 transitions, 21072 flow [2024-01-31 16:05:30,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:30,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:30,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 249 transitions. [2024-01-31 16:05:30,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263698630136986 [2024-01-31 16:05:30,581 INFO L175 Difference]: Start difference. First operand has 363 places, 699 transitions, 18980 flow. Second operand 8 states and 249 transitions. [2024-01-31 16:05:30,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 738 transitions, 21072 flow [2024-01-31 16:05:31,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 738 transitions, 20702 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-01-31 16:05:31,400 INFO L231 Difference]: Finished difference. Result has 363 places, 707 transitions, 19166 flow [2024-01-31 16:05:31,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=18610, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=699, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=554, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=19166, PETRI_PLACES=363, PETRI_TRANSITIONS=707} [2024-01-31 16:05:31,400 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 286 predicate places. [2024-01-31 16:05:31,400 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 707 transitions, 19166 flow [2024-01-31 16:05:31,401 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 16:05:31,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:31,401 INFO L208 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 16:05:31,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-01-31 16:05:31,401 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:31,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:31,401 INFO L85 PathProgramCache]: Analyzing trace with hash 207679077, now seen corresponding path program 11 times [2024-01-31 16:05:31,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:31,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659675836] [2024-01-31 16:05:31,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:31,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:31,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:31,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:31,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:31,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659675836] [2024-01-31 16:05:31,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659675836] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:31,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:31,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:31,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832769974] [2024-01-31 16:05:31,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:31,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:31,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:31,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:31,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:31,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:31,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 707 transitions, 19166 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 16:05:31,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:31,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:31,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:33,363 INFO L124 PetriNetUnfolderBase]: 3321/6347 cut-off events. [2024-01-31 16:05:33,363 INFO L125 PetriNetUnfolderBase]: For 303182/303509 co-relation queries the response was YES. [2024-01-31 16:05:33,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63641 conditions, 6347 events. 3321/6347 cut-off events. For 303182/303509 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 47804 event pairs, 688 based on Foata normal form. 22/6087 useless extension candidates. Maximal degree in co-relation 63518. Up to 4754 conditions per place. [2024-01-31 16:05:33,446 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 534 selfloop transitions, 142 changer transitions 0/730 dead transitions. [2024-01-31 16:05:33,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 730 transitions, 20749 flow [2024-01-31 16:05:33,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:33,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:33,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 251 transitions. [2024-01-31 16:05:33,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4297945205479452 [2024-01-31 16:05:33,447 INFO L175 Difference]: Start difference. First operand has 363 places, 707 transitions, 19166 flow. Second operand 8 states and 251 transitions. [2024-01-31 16:05:33,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 730 transitions, 20749 flow [2024-01-31 16:05:34,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 730 transitions, 20459 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-01-31 16:05:34,441 INFO L231 Difference]: Finished difference. Result has 364 places, 707 transitions, 19182 flow [2024-01-31 16:05:34,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=18876, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=707, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=565, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=19182, PETRI_PLACES=364, PETRI_TRANSITIONS=707} [2024-01-31 16:05:34,441 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 287 predicate places. [2024-01-31 16:05:34,441 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 707 transitions, 19182 flow [2024-01-31 16:05:34,442 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 16:05:34,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:34,442 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 16:05:34,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-01-31 16:05:34,442 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:34,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:34,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1198832143, now seen corresponding path program 12 times [2024-01-31 16:05:34,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:34,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455649550] [2024-01-31 16:05:34,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:34,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:34,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:34,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:34,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:34,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455649550] [2024-01-31 16:05:34,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455649550] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:34,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:34,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:34,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321753426] [2024-01-31 16:05:34,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:34,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:34,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:34,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:34,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:34,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:34,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 707 transitions, 19182 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 16:05:34,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:34,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:34,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:36,488 INFO L124 PetriNetUnfolderBase]: 3305/6309 cut-off events. [2024-01-31 16:05:36,488 INFO L125 PetriNetUnfolderBase]: For 304910/305197 co-relation queries the response was YES. [2024-01-31 16:05:36,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63175 conditions, 6309 events. 3305/6309 cut-off events. For 304910/305197 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 47380 event pairs, 731 based on Foata normal form. 19/6035 useless extension candidates. Maximal degree in co-relation 63052. Up to 4609 conditions per place. [2024-01-31 16:05:36,578 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 519 selfloop transitions, 154 changer transitions 0/727 dead transitions. [2024-01-31 16:05:36,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 727 transitions, 20694 flow [2024-01-31 16:05:36,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:36,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:36,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 246 transitions. [2024-01-31 16:05:36,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212328767123288 [2024-01-31 16:05:36,579 INFO L175 Difference]: Start difference. First operand has 364 places, 707 transitions, 19182 flow. Second operand 8 states and 246 transitions. [2024-01-31 16:05:36,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 727 transitions, 20694 flow [2024-01-31 16:05:37,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 727 transitions, 20433 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-01-31 16:05:37,527 INFO L231 Difference]: Finished difference. Result has 366 places, 707 transitions, 19263 flow [2024-01-31 16:05:37,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=18921, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=707, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=19263, PETRI_PLACES=366, PETRI_TRANSITIONS=707} [2024-01-31 16:05:37,528 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 289 predicate places. [2024-01-31 16:05:37,529 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 707 transitions, 19263 flow [2024-01-31 16:05:37,529 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 16:05:37,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:37,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:37,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-01-31 16:05:37,529 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:37,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:37,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1802774757, now seen corresponding path program 1 times [2024-01-31 16:05:37,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:37,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890449403] [2024-01-31 16:05:37,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:37,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:37,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:37,827 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 16:05:37,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:37,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890449403] [2024-01-31 16:05:37,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890449403] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:37,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:37,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:05:37,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197336221] [2024-01-31 16:05:37,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:37,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:05:37,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:37,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:05:37,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:05:37,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:37,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 707 transitions, 19263 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 16:05:37,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:37,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:37,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:39,526 INFO L124 PetriNetUnfolderBase]: 2868/5703 cut-off events. [2024-01-31 16:05:39,526 INFO L125 PetriNetUnfolderBase]: For 249750/249908 co-relation queries the response was YES. [2024-01-31 16:05:39,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55058 conditions, 5703 events. 2868/5703 cut-off events. For 249750/249908 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 44163 event pairs, 616 based on Foata normal form. 33/5657 useless extension candidates. Maximal degree in co-relation 54935. Up to 3589 conditions per place. [2024-01-31 16:05:39,594 INFO L140 encePairwiseOnDemand]: 60/73 looper letters, 557 selfloop transitions, 150 changer transitions 19/752 dead transitions. [2024-01-31 16:05:39,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 752 transitions, 21445 flow [2024-01-31 16:05:39,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:05:39,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:05:39,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 287 transitions. [2024-01-31 16:05:39,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4368340943683409 [2024-01-31 16:05:39,595 INFO L175 Difference]: Start difference. First operand has 366 places, 707 transitions, 19263 flow. Second operand 9 states and 287 transitions. [2024-01-31 16:05:39,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 752 transitions, 21445 flow [2024-01-31 16:05:40,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 752 transitions, 21105 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-01-31 16:05:40,326 INFO L231 Difference]: Finished difference. Result has 368 places, 691 transitions, 18983 flow [2024-01-31 16:05:40,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=18931, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=707, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18983, PETRI_PLACES=368, PETRI_TRANSITIONS=691} [2024-01-31 16:05:40,326 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 291 predicate places. [2024-01-31 16:05:40,327 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 691 transitions, 18983 flow [2024-01-31 16:05:40,327 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 16:05:40,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:40,327 INFO L208 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 16:05:40,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-01-31 16:05:40,327 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:40,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:40,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1899535335, now seen corresponding path program 2 times [2024-01-31 16:05:40,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:40,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704004103] [2024-01-31 16:05:40,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:40,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:40,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:40,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:40,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:40,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704004103] [2024-01-31 16:05:40,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704004103] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:40,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:40,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:05:40,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488099389] [2024-01-31 16:05:40,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:40,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:40,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:40,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:40,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:40,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:40,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 691 transitions, 18983 flow. Second operand has 9 states, 9 states have (on average 23.0) internal successors, (207), 9 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:40,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:40,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:40,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:42,215 INFO L124 PetriNetUnfolderBase]: 2803/5688 cut-off events. [2024-01-31 16:05:42,215 INFO L125 PetriNetUnfolderBase]: For 250764/250920 co-relation queries the response was YES. [2024-01-31 16:05:42,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54774 conditions, 5688 events. 2803/5688 cut-off events. For 250764/250920 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 44816 event pairs, 361 based on Foata normal form. 28/5637 useless extension candidates. Maximal degree in co-relation 54649. Up to 1888 conditions per place. [2024-01-31 16:05:42,287 INFO L140 encePairwiseOnDemand]: 54/73 looper letters, 401 selfloop transitions, 308 changer transitions 8/743 dead transitions. [2024-01-31 16:05:42,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 743 transitions, 21186 flow [2024-01-31 16:05:42,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:42,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:42,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 276 transitions. [2024-01-31 16:05:42,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4726027397260274 [2024-01-31 16:05:42,288 INFO L175 Difference]: Start difference. First operand has 368 places, 691 transitions, 18983 flow. Second operand 8 states and 276 transitions. [2024-01-31 16:05:42,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 743 transitions, 21186 flow [2024-01-31 16:05:43,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 743 transitions, 20646 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-01-31 16:05:43,079 INFO L231 Difference]: Finished difference. Result has 367 places, 689 transitions, 19330 flow [2024-01-31 16:05:43,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=18434, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=689, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=302, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=19330, PETRI_PLACES=367, PETRI_TRANSITIONS=689} [2024-01-31 16:05:43,080 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 290 predicate places. [2024-01-31 16:05:43,080 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 689 transitions, 19330 flow [2024-01-31 16:05:43,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.0) internal successors, (207), 9 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:43,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:43,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:43,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-01-31 16:05:43,081 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:43,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:43,081 INFO L85 PathProgramCache]: Analyzing trace with hash -272486737, now seen corresponding path program 3 times [2024-01-31 16:05:43,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:43,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670176780] [2024-01-31 16:05:43,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:43,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:43,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:43,315 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 16:05:43,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:43,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670176780] [2024-01-31 16:05:43,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670176780] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:43,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:43,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:05:43,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775292959] [2024-01-31 16:05:43,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:43,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:43,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:43,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:43,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:43,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:43,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 689 transitions, 19330 flow. Second operand has 9 states, 9 states have (on average 23.0) internal successors, (207), 9 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:43,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:43,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:43,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:44,927 INFO L124 PetriNetUnfolderBase]: 2785/5698 cut-off events. [2024-01-31 16:05:44,927 INFO L125 PetriNetUnfolderBase]: For 257919/258099 co-relation queries the response was YES. [2024-01-31 16:05:44,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56350 conditions, 5698 events. 2785/5698 cut-off events. For 257919/258099 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 45223 event pairs, 369 based on Foata normal form. 20/5639 useless extension candidates. Maximal degree in co-relation 56224. Up to 1534 conditions per place. [2024-01-31 16:05:45,002 INFO L140 encePairwiseOnDemand]: 55/73 looper letters, 371 selfloop transitions, 298 changer transitions 38/733 dead transitions. [2024-01-31 16:05:45,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 733 transitions, 21317 flow [2024-01-31 16:05:45,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:45,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:45,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 280 transitions. [2024-01-31 16:05:45,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4794520547945205 [2024-01-31 16:05:45,005 INFO L175 Difference]: Start difference. First operand has 367 places, 689 transitions, 19330 flow. Second operand 8 states and 280 transitions. [2024-01-31 16:05:45,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 733 transitions, 21317 flow [2024-01-31 16:05:45,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 733 transitions, 21134 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-01-31 16:05:45,825 INFO L231 Difference]: Finished difference. Result has 371 places, 651 transitions, 18982 flow [2024-01-31 16:05:45,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=19147, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=689, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=298, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18982, PETRI_PLACES=371, PETRI_TRANSITIONS=651} [2024-01-31 16:05:45,825 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 294 predicate places. [2024-01-31 16:05:45,825 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 651 transitions, 18982 flow [2024-01-31 16:05:45,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.0) internal successors, (207), 9 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:45,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:45,826 INFO L208 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 16:05:45,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-01-31 16:05:45,826 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:45,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:45,826 INFO L85 PathProgramCache]: Analyzing trace with hash 658547683, now seen corresponding path program 4 times [2024-01-31 16:05:45,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:45,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652841002] [2024-01-31 16:05:45,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:45,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:45,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:46,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:46,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:46,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652841002] [2024-01-31 16:05:46,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652841002] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:46,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:46,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:05:46,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502755441] [2024-01-31 16:05:46,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:46,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:46,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:46,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:46,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:46,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:46,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 651 transitions, 18982 flow. Second operand has 9 states, 9 states have (on average 23.0) internal successors, (207), 9 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:46,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:46,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:46,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:47,655 INFO L124 PetriNetUnfolderBase]: 2677/5510 cut-off events. [2024-01-31 16:05:47,655 INFO L125 PetriNetUnfolderBase]: For 257669/257849 co-relation queries the response was YES. [2024-01-31 16:05:47,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55743 conditions, 5510 events. 2677/5510 cut-off events. For 257669/257849 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 43549 event pairs, 368 based on Foata normal form. 20/5451 useless extension candidates. Maximal degree in co-relation 55617. Up to 1434 conditions per place. [2024-01-31 16:05:47,726 INFO L140 encePairwiseOnDemand]: 56/73 looper letters, 387 selfloop transitions, 232 changer transitions 44/689 dead transitions. [2024-01-31 16:05:47,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 689 transitions, 20752 flow [2024-01-31 16:05:47,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:47,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:47,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 269 transitions. [2024-01-31 16:05:47,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4606164383561644 [2024-01-31 16:05:47,728 INFO L175 Difference]: Start difference. First operand has 371 places, 651 transitions, 18982 flow. Second operand 8 states and 269 transitions. [2024-01-31 16:05:47,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 689 transitions, 20752 flow [2024-01-31 16:05:48,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 689 transitions, 20033 flow, removed 0 selfloop flow, removed 17 redundant places. [2024-01-31 16:05:48,653 INFO L231 Difference]: Finished difference. Result has 360 places, 607 transitions, 17818 flow [2024-01-31 16:05:48,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=18209, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=649, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17818, PETRI_PLACES=360, PETRI_TRANSITIONS=607} [2024-01-31 16:05:48,653 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 283 predicate places. [2024-01-31 16:05:48,654 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 607 transitions, 17818 flow [2024-01-31 16:05:48,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.0) internal successors, (207), 9 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:48,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:48,654 INFO L208 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 16:05:48,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-01-31 16:05:48,654 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:48,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:48,655 INFO L85 PathProgramCache]: Analyzing trace with hash 436161069, now seen corresponding path program 1 times [2024-01-31 16:05:48,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:48,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216841671] [2024-01-31 16:05:48,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:48,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:48,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:48,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:48,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:48,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216841671] [2024-01-31 16:05:48,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216841671] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:48,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:48,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:05:48,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455920999] [2024-01-31 16:05:48,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:48,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:48,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:48,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:48,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:48,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:48,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 607 transitions, 17818 flow. Second operand has 9 states, 9 states have (on average 23.0) internal successors, (207), 9 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:48,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:48,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:48,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:50,536 INFO L124 PetriNetUnfolderBase]: 3048/6031 cut-off events. [2024-01-31 16:05:50,536 INFO L125 PetriNetUnfolderBase]: For 306219/306512 co-relation queries the response was YES. [2024-01-31 16:05:50,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63280 conditions, 6031 events. 3048/6031 cut-off events. For 306219/306512 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 46023 event pairs, 638 based on Foata normal form. 19/5806 useless extension candidates. Maximal degree in co-relation 63162. Up to 3731 conditions per place. [2024-01-31 16:05:50,613 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 423 selfloop transitions, 127 changer transitions 42/639 dead transitions. [2024-01-31 16:05:50,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 639 transitions, 19393 flow [2024-01-31 16:05:50,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:50,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:50,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 220 transitions. [2024-01-31 16:05:50,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43052837573385516 [2024-01-31 16:05:50,614 INFO L175 Difference]: Start difference. First operand has 360 places, 607 transitions, 17818 flow. Second operand 7 states and 220 transitions. [2024-01-31 16:05:50,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 639 transitions, 19393 flow [2024-01-31 16:05:51,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 639 transitions, 18614 flow, removed 33 selfloop flow, removed 16 redundant places. [2024-01-31 16:05:51,525 INFO L231 Difference]: Finished difference. Result has 351 places, 565 transitions, 16274 flow [2024-01-31 16:05:51,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=17045, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16274, PETRI_PLACES=351, PETRI_TRANSITIONS=565} [2024-01-31 16:05:51,525 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 274 predicate places. [2024-01-31 16:05:51,526 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 565 transitions, 16274 flow [2024-01-31 16:05:51,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.0) internal successors, (207), 9 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:51,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:51,526 INFO L208 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 16:05:51,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-01-31 16:05:51,526 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:51,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:51,526 INFO L85 PathProgramCache]: Analyzing trace with hash 2000543823, now seen corresponding path program 2 times [2024-01-31 16:05:51,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:51,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838074349] [2024-01-31 16:05:51,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:51,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:51,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:51,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:51,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838074349] [2024-01-31 16:05:51,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838074349] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:51,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:51,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:05:51,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343070329] [2024-01-31 16:05:51,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:51,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:05:51,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:51,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:05:51,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:05:51,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:51,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 565 transitions, 16274 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 16:05:51,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:51,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:51,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:53,446 INFO L124 PetriNetUnfolderBase]: 2934/5922 cut-off events. [2024-01-31 16:05:53,446 INFO L125 PetriNetUnfolderBase]: For 290659/290970 co-relation queries the response was YES. [2024-01-31 16:05:53,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59986 conditions, 5922 events. 2934/5922 cut-off events. For 290659/290970 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 45757 event pairs, 758 based on Foata normal form. 31/5717 useless extension candidates. Maximal degree in co-relation 59871. Up to 3920 conditions per place. [2024-01-31 16:05:53,508 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 475 selfloop transitions, 100 changer transitions 12/634 dead transitions. [2024-01-31 16:05:53,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 634 transitions, 18525 flow [2024-01-31 16:05:53,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:53,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:53,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 258 transitions. [2024-01-31 16:05:53,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417808219178082 [2024-01-31 16:05:53,509 INFO L175 Difference]: Start difference. First operand has 351 places, 565 transitions, 16274 flow. Second operand 8 states and 258 transitions. [2024-01-31 16:05:53,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 634 transitions, 18525 flow [2024-01-31 16:05:54,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 634 transitions, 17703 flow, removed 10 selfloop flow, removed 17 redundant places. [2024-01-31 16:05:54,239 INFO L231 Difference]: Finished difference. Result has 342 places, 556 transitions, 15483 flow [2024-01-31 16:05:54,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=15464, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15483, PETRI_PLACES=342, PETRI_TRANSITIONS=556} [2024-01-31 16:05:54,239 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 265 predicate places. [2024-01-31 16:05:54,239 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 556 transitions, 15483 flow [2024-01-31 16:05:54,240 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 16:05:54,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:54,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:54,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-01-31 16:05:54,240 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:54,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:54,240 INFO L85 PathProgramCache]: Analyzing trace with hash -384821649, now seen corresponding path program 3 times [2024-01-31 16:05:54,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:54,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962165849] [2024-01-31 16:05:54,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:54,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:54,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:54,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:54,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:54,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962165849] [2024-01-31 16:05:54,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962165849] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:54,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:54,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:05:54,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726358400] [2024-01-31 16:05:54,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:54,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:05:54,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:54,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:05:54,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:05:54,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:54,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 556 transitions, 15483 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 16:05:54,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:54,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:54,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:55,963 INFO L124 PetriNetUnfolderBase]: 2843/5758 cut-off events. [2024-01-31 16:05:55,963 INFO L125 PetriNetUnfolderBase]: For 253879/254180 co-relation queries the response was YES. [2024-01-31 16:05:56,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56980 conditions, 5758 events. 2843/5758 cut-off events. For 253879/254180 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 44195 event pairs, 744 based on Foata normal form. 26/5553 useless extension candidates. Maximal degree in co-relation 56869. Up to 4201 conditions per place. [2024-01-31 16:05:56,036 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 438 selfloop transitions, 84 changer transitions 34/602 dead transitions. [2024-01-31 16:05:56,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 602 transitions, 17178 flow [2024-01-31 16:05:56,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:56,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:56,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 250 transitions. [2024-01-31 16:05:56,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4280821917808219 [2024-01-31 16:05:56,037 INFO L175 Difference]: Start difference. First operand has 342 places, 556 transitions, 15483 flow. Second operand 8 states and 250 transitions. [2024-01-31 16:05:56,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 602 transitions, 17178 flow [2024-01-31 16:05:56,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 602 transitions, 16981 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-01-31 16:05:56,796 INFO L231 Difference]: Finished difference. Result has 344 places, 527 transitions, 14804 flow [2024-01-31 16:05:56,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=15286, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14804, PETRI_PLACES=344, PETRI_TRANSITIONS=527} [2024-01-31 16:05:56,797 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 267 predicate places. [2024-01-31 16:05:56,797 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 527 transitions, 14804 flow [2024-01-31 16:05:56,797 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 16:05:56,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:56,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:56,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-01-31 16:05:56,797 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:56,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:56,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1743488543, now seen corresponding path program 4 times [2024-01-31 16:05:56,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:56,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272258912] [2024-01-31 16:05:56,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:56,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:56,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:57,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:57,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:57,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272258912] [2024-01-31 16:05:57,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272258912] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:57,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:57,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:05:57,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418440274] [2024-01-31 16:05:57,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:57,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:05:57,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:57,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:05:57,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:05:57,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:57,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 527 transitions, 14804 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 16:05:57,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:57,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:57,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:58,694 INFO L124 PetriNetUnfolderBase]: 2910/6069 cut-off events. [2024-01-31 16:05:58,694 INFO L125 PetriNetUnfolderBase]: For 261091/261424 co-relation queries the response was YES. [2024-01-31 16:05:58,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59355 conditions, 6069 events. 2910/6069 cut-off events. For 261091/261424 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 48531 event pairs, 825 based on Foata normal form. 54/5897 useless extension candidates. Maximal degree in co-relation 59243. Up to 3536 conditions per place. [2024-01-31 16:05:58,764 INFO L140 encePairwiseOnDemand]: 60/73 looper letters, 429 selfloop transitions, 131 changer transitions 24/630 dead transitions. [2024-01-31 16:05:58,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 630 transitions, 17791 flow [2024-01-31 16:05:58,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:05:58,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:05:58,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 291 transitions. [2024-01-31 16:05:58,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4429223744292237 [2024-01-31 16:05:58,765 INFO L175 Difference]: Start difference. First operand has 344 places, 527 transitions, 14804 flow. Second operand 9 states and 291 transitions. [2024-01-31 16:05:58,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 630 transitions, 17791 flow [2024-01-31 16:05:59,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 630 transitions, 17592 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-01-31 16:05:59,550 INFO L231 Difference]: Finished difference. Result has 344 places, 527 transitions, 14841 flow [2024-01-31 16:05:59,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=14605, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14841, PETRI_PLACES=344, PETRI_TRANSITIONS=527} [2024-01-31 16:05:59,550 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 267 predicate places. [2024-01-31 16:05:59,550 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 527 transitions, 14841 flow [2024-01-31 16:05:59,550 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 16:05:59,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:59,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:59,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-01-31 16:05:59,551 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:59,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:59,551 INFO L85 PathProgramCache]: Analyzing trace with hash 2073861595, now seen corresponding path program 5 times [2024-01-31 16:05:59,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:59,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022065845] [2024-01-31 16:05:59,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:59,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:59,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:59,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:59,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:59,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022065845] [2024-01-31 16:05:59,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022065845] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:59,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:59,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:05:59,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354608487] [2024-01-31 16:05:59,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:59,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:05:59,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:59,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:05:59,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:05:59,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:59,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 527 transitions, 14841 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 16:05:59,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:59,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:59,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:01,367 INFO L124 PetriNetUnfolderBase]: 2758/5804 cut-off events. [2024-01-31 16:06:01,367 INFO L125 PetriNetUnfolderBase]: For 255704/256012 co-relation queries the response was YES. [2024-01-31 16:06:01,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57136 conditions, 5804 events. 2758/5804 cut-off events. For 255704/256012 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 46232 event pairs, 827 based on Foata normal form. 27/5613 useless extension candidates. Maximal degree in co-relation 57024. Up to 4325 conditions per place. [2024-01-31 16:06:01,445 INFO L140 encePairwiseOnDemand]: 61/73 looper letters, 410 selfloop transitions, 98 changer transitions 23/577 dead transitions. [2024-01-31 16:06:01,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 577 transitions, 16523 flow [2024-01-31 16:06:01,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:06:01,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:06:01,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 281 transitions. [2024-01-31 16:06:01,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4277016742770167 [2024-01-31 16:06:01,446 INFO L175 Difference]: Start difference. First operand has 344 places, 527 transitions, 14841 flow. Second operand 9 states and 281 transitions. [2024-01-31 16:06:01,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 577 transitions, 16523 flow [2024-01-31 16:06:02,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 577 transitions, 16281 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-01-31 16:06:02,263 INFO L231 Difference]: Finished difference. Result has 346 places, 513 transitions, 14495 flow [2024-01-31 16:06:02,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=14600, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14495, PETRI_PLACES=346, PETRI_TRANSITIONS=513} [2024-01-31 16:06:02,264 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 269 predicate places. [2024-01-31 16:06:02,264 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 513 transitions, 14495 flow [2024-01-31 16:06:02,264 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 16:06:02,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:02,264 INFO L208 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 16:06:02,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-01-31 16:06:02,264 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:02,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:02,264 INFO L85 PathProgramCache]: Analyzing trace with hash 728054639, now seen corresponding path program 6 times [2024-01-31 16:06:02,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:02,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159744626] [2024-01-31 16:06:02,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:02,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:02,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:02,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:02,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159744626] [2024-01-31 16:06:02,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159744626] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:02,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:02,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:06:02,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909923365] [2024-01-31 16:06:02,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:02,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:06:02,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:02,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:06:02,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:06:02,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:02,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 513 transitions, 14495 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 16:06:02,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:02,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:02,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:03,980 INFO L124 PetriNetUnfolderBase]: 2698/5656 cut-off events. [2024-01-31 16:06:03,980 INFO L125 PetriNetUnfolderBase]: For 248431/248741 co-relation queries the response was YES. [2024-01-31 16:06:04,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55782 conditions, 5656 events. 2698/5656 cut-off events. For 248431/248741 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 44632 event pairs, 804 based on Foata normal form. 29/5469 useless extension candidates. Maximal degree in co-relation 55669. Up to 4211 conditions per place. [2024-01-31 16:06:04,052 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 411 selfloop transitions, 69 changer transitions 27/553 dead transitions. [2024-01-31 16:06:04,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 553 transitions, 16022 flow [2024-01-31 16:06:04,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:06:04,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:06:04,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 247 transitions. [2024-01-31 16:06:04,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229452054794521 [2024-01-31 16:06:04,053 INFO L175 Difference]: Start difference. First operand has 346 places, 513 transitions, 14495 flow. Second operand 8 states and 247 transitions. [2024-01-31 16:06:04,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 553 transitions, 16022 flow [2024-01-31 16:06:04,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 553 transitions, 15833 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-01-31 16:06:04,815 INFO L231 Difference]: Finished difference. Result has 347 places, 491 transitions, 13998 flow [2024-01-31 16:06:04,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=14306, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13998, PETRI_PLACES=347, PETRI_TRANSITIONS=491} [2024-01-31 16:06:04,815 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 270 predicate places. [2024-01-31 16:06:04,815 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 491 transitions, 13998 flow [2024-01-31 16:06:04,815 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 16:06:04,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:04,815 INFO L208 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 16:06:04,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-01-31 16:06:04,816 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:04,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:04,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1576619679, now seen corresponding path program 7 times [2024-01-31 16:06:04,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:04,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008542408] [2024-01-31 16:06:04,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:04,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:04,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:05,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:05,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:05,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008542408] [2024-01-31 16:06:05,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008542408] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:05,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:05,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:06:05,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195436284] [2024-01-31 16:06:05,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:05,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:06:05,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:05,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:06:05,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:06:05,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:05,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 491 transitions, 13998 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 16:06:05,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:05,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:05,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:06,558 INFO L124 PetriNetUnfolderBase]: 2646/5519 cut-off events. [2024-01-31 16:06:06,559 INFO L125 PetriNetUnfolderBase]: For 243044/243302 co-relation queries the response was YES. [2024-01-31 16:06:06,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54496 conditions, 5519 events. 2646/5519 cut-off events. For 243044/243302 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 42980 event pairs, 590 based on Foata normal form. 23/5338 useless extension candidates. Maximal degree in co-relation 54382. Up to 1985 conditions per place. [2024-01-31 16:06:06,631 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 280 selfloop transitions, 183 changer transitions 25/531 dead transitions. [2024-01-31 16:06:06,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 531 transitions, 15497 flow [2024-01-31 16:06:06,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:06:06,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:06:06,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 235 transitions. [2024-01-31 16:06:06,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4598825831702544 [2024-01-31 16:06:06,633 INFO L175 Difference]: Start difference. First operand has 347 places, 491 transitions, 13998 flow. Second operand 7 states and 235 transitions. [2024-01-31 16:06:06,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 531 transitions, 15497 flow [2024-01-31 16:06:07,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 531 transitions, 15291 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-01-31 16:06:07,507 INFO L231 Difference]: Finished difference. Result has 342 places, 467 transitions, 13590 flow [2024-01-31 16:06:07,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=13792, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13590, PETRI_PLACES=342, PETRI_TRANSITIONS=467} [2024-01-31 16:06:07,507 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 265 predicate places. [2024-01-31 16:06:07,507 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 467 transitions, 13590 flow [2024-01-31 16:06:07,508 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 16:06:07,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:07,508 INFO L208 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 16:06:07,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-01-31 16:06:07,508 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:07,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:07,508 INFO L85 PathProgramCache]: Analyzing trace with hash -2039011533, now seen corresponding path program 8 times [2024-01-31 16:06:07,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:07,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647149164] [2024-01-31 16:06:07,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:07,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:07,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:07,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:07,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:07,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647149164] [2024-01-31 16:06:07,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647149164] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:07,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:07,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:06:07,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324194517] [2024-01-31 16:06:07,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:07,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:06:07,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:07,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:06:07,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:06:07,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:07,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 467 transitions, 13590 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 16:06:07,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:07,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:07,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:09,161 INFO L124 PetriNetUnfolderBase]: 2492/5222 cut-off events. [2024-01-31 16:06:09,161 INFO L125 PetriNetUnfolderBase]: For 239082/239356 co-relation queries the response was YES. [2024-01-31 16:06:09,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51935 conditions, 5222 events. 2492/5222 cut-off events. For 239082/239356 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 40292 event pairs, 719 based on Foata normal form. 22/5042 useless extension candidates. Maximal degree in co-relation 51821. Up to 3766 conditions per place. [2024-01-31 16:06:09,226 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 340 selfloop transitions, 91 changer transitions 22/494 dead transitions. [2024-01-31 16:06:09,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 494 transitions, 14789 flow [2024-01-31 16:06:09,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:06:09,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:06:09,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 223 transitions. [2024-01-31 16:06:09,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436399217221135 [2024-01-31 16:06:09,227 INFO L175 Difference]: Start difference. First operand has 342 places, 467 transitions, 13590 flow. Second operand 7 states and 223 transitions. [2024-01-31 16:06:09,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 494 transitions, 14789 flow [2024-01-31 16:06:09,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 494 transitions, 14224 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-01-31 16:06:09,943 INFO L231 Difference]: Finished difference. Result has 339 places, 448 transitions, 12879 flow [2024-01-31 16:06:09,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=13028, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12879, PETRI_PLACES=339, PETRI_TRANSITIONS=448} [2024-01-31 16:06:09,944 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 262 predicate places. [2024-01-31 16:06:09,944 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 448 transitions, 12879 flow [2024-01-31 16:06:09,944 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 16:06:09,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:09,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:09,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-01-31 16:06:09,944 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:09,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:09,945 INFO L85 PathProgramCache]: Analyzing trace with hash -24280735, now seen corresponding path program 9 times [2024-01-31 16:06:09,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:09,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020464367] [2024-01-31 16:06:09,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:09,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:09,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:10,193 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 16:06:10,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:10,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020464367] [2024-01-31 16:06:10,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020464367] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:10,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:10,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:06:10,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431892067] [2024-01-31 16:06:10,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:10,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:06:10,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:10,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:06:10,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:06:10,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:10,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 448 transitions, 12879 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 16:06:10,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:10,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:10,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:11,509 INFO L124 PetriNetUnfolderBase]: 2453/5131 cut-off events. [2024-01-31 16:06:11,509 INFO L125 PetriNetUnfolderBase]: For 218868/219146 co-relation queries the response was YES. [2024-01-31 16:06:11,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49812 conditions, 5131 events. 2453/5131 cut-off events. For 218868/219146 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 39339 event pairs, 675 based on Foata normal form. 35/4975 useless extension candidates. Maximal degree in co-relation 49702. Up to 2944 conditions per place. [2024-01-31 16:06:11,572 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 348 selfloop transitions, 84 changer transitions 14/485 dead transitions. [2024-01-31 16:06:11,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 485 transitions, 14303 flow [2024-01-31 16:06:11,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:06:11,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:06:11,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 228 transitions. [2024-01-31 16:06:11,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4461839530332681 [2024-01-31 16:06:11,573 INFO L175 Difference]: Start difference. First operand has 339 places, 448 transitions, 12879 flow. Second operand 7 states and 228 transitions. [2024-01-31 16:06:11,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 485 transitions, 14303 flow [2024-01-31 16:06:12,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 485 transitions, 13966 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-01-31 16:06:12,329 INFO L231 Difference]: Finished difference. Result has 334 places, 434 transitions, 12485 flow [2024-01-31 16:06:12,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12550, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12485, PETRI_PLACES=334, PETRI_TRANSITIONS=434} [2024-01-31 16:06:12,329 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 257 predicate places. [2024-01-31 16:06:12,329 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 434 transitions, 12485 flow [2024-01-31 16:06:12,329 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 16:06:12,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:12,329 INFO L208 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 16:06:12,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-01-31 16:06:12,330 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:12,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:12,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1011222033, now seen corresponding path program 10 times [2024-01-31 16:06:12,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:12,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303130968] [2024-01-31 16:06:12,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:12,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:12,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:12,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:12,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:12,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303130968] [2024-01-31 16:06:12,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303130968] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:12,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:12,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:06:12,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490204139] [2024-01-31 16:06:12,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:12,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:06:12,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:12,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:06:12,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:06:12,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:12,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 434 transitions, 12485 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 16:06:12,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:12,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:12,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:13,886 INFO L124 PetriNetUnfolderBase]: 2386/5080 cut-off events. [2024-01-31 16:06:13,886 INFO L125 PetriNetUnfolderBase]: For 214667/214929 co-relation queries the response was YES. [2024-01-31 16:06:13,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48768 conditions, 5080 events. 2386/5080 cut-off events. For 214667/214929 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 39418 event pairs, 711 based on Foata normal form. 26/4919 useless extension candidates. Maximal degree in co-relation 48661. Up to 3618 conditions per place. [2024-01-31 16:06:13,947 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 340 selfloop transitions, 71 changer transitions 23/473 dead transitions. [2024-01-31 16:06:13,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 473 transitions, 13998 flow [2024-01-31 16:06:13,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:06:13,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:06:13,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 218 transitions. [2024-01-31 16:06:13,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42661448140900193 [2024-01-31 16:06:13,948 INFO L175 Difference]: Start difference. First operand has 334 places, 434 transitions, 12485 flow. Second operand 7 states and 218 transitions. [2024-01-31 16:06:13,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 473 transitions, 13998 flow [2024-01-31 16:06:14,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 473 transitions, 13530 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-01-31 16:06:14,611 INFO L231 Difference]: Finished difference. Result has 330 places, 419 transitions, 11891 flow [2024-01-31 16:06:14,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12023, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11891, PETRI_PLACES=330, PETRI_TRANSITIONS=419} [2024-01-31 16:06:14,611 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 253 predicate places. [2024-01-31 16:06:14,611 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 419 transitions, 11891 flow [2024-01-31 16:06:14,611 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 16:06:14,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:14,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:14,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-01-31 16:06:14,612 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:14,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:14,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1609567063, now seen corresponding path program 11 times [2024-01-31 16:06:14,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:14,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504265313] [2024-01-31 16:06:14,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:14,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:14,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:14,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:14,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:14,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504265313] [2024-01-31 16:06:14,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504265313] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:14,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:14,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:06:14,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050329526] [2024-01-31 16:06:14,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:14,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:06:14,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:14,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:06:14,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:06:14,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:14,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 419 transitions, 11891 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 16:06:14,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:14,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:14,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:16,114 INFO L124 PetriNetUnfolderBase]: 2341/4957 cut-off events. [2024-01-31 16:06:16,114 INFO L125 PetriNetUnfolderBase]: For 192688/192945 co-relation queries the response was YES. [2024-01-31 16:06:16,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47055 conditions, 4957 events. 2341/4957 cut-off events. For 192688/192945 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 38040 event pairs, 695 based on Foata normal form. 22/4792 useless extension candidates. Maximal degree in co-relation 46952. Up to 3547 conditions per place. [2024-01-31 16:06:16,172 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 321 selfloop transitions, 56 changer transitions 28/443 dead transitions. [2024-01-31 16:06:16,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 443 transitions, 12955 flow [2024-01-31 16:06:16,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:06:16,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:06:16,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 220 transitions. [2024-01-31 16:06:16,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43052837573385516 [2024-01-31 16:06:16,173 INFO L175 Difference]: Start difference. First operand has 330 places, 419 transitions, 11891 flow. Second operand 7 states and 220 transitions. [2024-01-31 16:06:16,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 443 transitions, 12955 flow [2024-01-31 16:06:16,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 443 transitions, 12749 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-01-31 16:06:16,836 INFO L231 Difference]: Finished difference. Result has 328 places, 392 transitions, 11325 flow [2024-01-31 16:06:16,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11685, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11325, PETRI_PLACES=328, PETRI_TRANSITIONS=392} [2024-01-31 16:06:16,837 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 251 predicate places. [2024-01-31 16:06:16,837 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 392 transitions, 11325 flow [2024-01-31 16:06:16,837 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 16:06:16,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:16,837 INFO L208 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 16:06:16,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-01-31 16:06:16,837 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:16,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:16,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1893183809, now seen corresponding path program 12 times [2024-01-31 16:06:16,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:16,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684893487] [2024-01-31 16:06:16,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:16,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:16,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:17,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:17,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:17,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684893487] [2024-01-31 16:06:17,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684893487] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:17,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:17,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:06:17,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458770708] [2024-01-31 16:06:17,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:17,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:06:17,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:17,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:06:17,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:06:17,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:17,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 392 transitions, 11325 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 16:06:17,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:17,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:17,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:18,168 INFO L124 PetriNetUnfolderBase]: 2275/4782 cut-off events. [2024-01-31 16:06:18,169 INFO L125 PetriNetUnfolderBase]: For 185737/185943 co-relation queries the response was YES. [2024-01-31 16:06:18,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45361 conditions, 4782 events. 2275/4782 cut-off events. For 185737/185943 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 36177 event pairs, 712 based on Foata normal form. 19/4609 useless extension candidates. Maximal degree in co-relation 45259. Up to 3309 conditions per place. [2024-01-31 16:06:18,221 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 278 selfloop transitions, 67 changer transitions 26/408 dead transitions. [2024-01-31 16:06:18,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 408 transitions, 12140 flow [2024-01-31 16:06:18,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:06:18,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:06:18,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 213 transitions. [2024-01-31 16:06:18,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41682974559686886 [2024-01-31 16:06:18,222 INFO L175 Difference]: Start difference. First operand has 328 places, 392 transitions, 11325 flow. Second operand 7 states and 213 transitions. [2024-01-31 16:06:18,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 408 transitions, 12140 flow [2024-01-31 16:06:18,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 408 transitions, 11268 flow, removed 19 selfloop flow, removed 30 redundant places. [2024-01-31 16:06:18,699 INFO L231 Difference]: Finished difference. Result has 302 places, 364 transitions, 10142 flow [2024-01-31 16:06:18,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10403, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10142, PETRI_PLACES=302, PETRI_TRANSITIONS=364} [2024-01-31 16:06:18,699 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 225 predicate places. [2024-01-31 16:06:18,699 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 364 transitions, 10142 flow [2024-01-31 16:06:18,699 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 16:06:18,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:18,699 INFO L208 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 16:06:18,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-01-31 16:06:18,700 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:18,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:18,700 INFO L85 PathProgramCache]: Analyzing trace with hash -506518924, now seen corresponding path program 1 times [2024-01-31 16:06:18,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:18,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990801244] [2024-01-31 16:06:18,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:18,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:18,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:06:18,713 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-31 16:06:18,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:06:18,771 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-31 16:06:18,771 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-31 16:06:18,772 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (59 of 60 remaining) [2024-01-31 16:06:18,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (58 of 60 remaining) [2024-01-31 16:06:18,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (57 of 60 remaining) [2024-01-31 16:06:18,781 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (56 of 60 remaining) [2024-01-31 16:06:18,782 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (55 of 60 remaining) [2024-01-31 16:06:18,782 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT (54 of 60 remaining) [2024-01-31 16:06:18,782 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err5ASSERT_VIOLATIONWITNESS_INVARIANT (53 of 60 remaining) [2024-01-31 16:06:18,782 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err6ASSERT_VIOLATIONWITNESS_INVARIANT (52 of 60 remaining) [2024-01-31 16:06:18,782 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT (51 of 60 remaining) [2024-01-31 16:06:18,782 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err8ASSERT_VIOLATIONWITNESS_INVARIANT (50 of 60 remaining) [2024-01-31 16:06:18,783 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 60 remaining) [2024-01-31 16:06:18,783 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err10ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 60 remaining) [2024-01-31 16:06:18,783 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err11ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 60 remaining) [2024-01-31 16:06:18,783 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 60 remaining) [2024-01-31 16:06:18,783 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 60 remaining) [2024-01-31 16:06:18,783 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 60 remaining) [2024-01-31 16:06:18,784 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 60 remaining) [2024-01-31 16:06:18,784 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 60 remaining) [2024-01-31 16:06:18,784 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 60 remaining) [2024-01-31 16:06:18,784 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 60 remaining) [2024-01-31 16:06:18,784 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 60 remaining) [2024-01-31 16:06:18,784 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 60 remaining) [2024-01-31 16:06:18,785 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 60 remaining) [2024-01-31 16:06:18,785 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 60 remaining) [2024-01-31 16:06:18,785 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 60 remaining) [2024-01-31 16:06:18,785 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 60 remaining) [2024-01-31 16:06:18,785 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 60 remaining) [2024-01-31 16:06:18,785 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 60 remaining) [2024-01-31 16:06:18,786 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 60 remaining) [2024-01-31 16:06:18,786 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 60 remaining) [2024-01-31 16:06:18,786 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 60 remaining) [2024-01-31 16:06:18,786 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 60 remaining) [2024-01-31 16:06:18,786 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 60 remaining) [2024-01-31 16:06:18,786 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (26 of 60 remaining) [2024-01-31 16:06:18,787 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 60 remaining) [2024-01-31 16:06:18,787 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 60 remaining) [2024-01-31 16:06:18,787 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 60 remaining) [2024-01-31 16:06:18,787 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 60 remaining) [2024-01-31 16:06:18,787 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 60 remaining) [2024-01-31 16:06:18,787 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 60 remaining) [2024-01-31 16:06:18,787 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 60 remaining) [2024-01-31 16:06:18,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err5ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 60 remaining) [2024-01-31 16:06:18,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err6ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 60 remaining) [2024-01-31 16:06:18,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 60 remaining) [2024-01-31 16:06:18,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err8ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 60 remaining) [2024-01-31 16:06:18,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 60 remaining) [2024-01-31 16:06:18,788 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err10ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 60 remaining) [2024-01-31 16:06:18,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err11ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 60 remaining) [2024-01-31 16:06:18,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 60 remaining) [2024-01-31 16:06:18,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 60 remaining) [2024-01-31 16:06:18,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 60 remaining) [2024-01-31 16:06:18,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 60 remaining) [2024-01-31 16:06:18,789 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 60 remaining) [2024-01-31 16:06:18,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 60 remaining) [2024-01-31 16:06:18,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 60 remaining) [2024-01-31 16:06:18,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 60 remaining) [2024-01-31 16:06:18,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 60 remaining) [2024-01-31 16:06:18,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 60 remaining) [2024-01-31 16:06:18,790 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 60 remaining) [2024-01-31 16:06:18,791 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 60 remaining) [2024-01-31 16:06:18,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-01-31 16:06:18,791 INFO L445 BasicCegarLoop]: Path program histogram: [12, 12, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:18,798 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-31 16:06:18,798 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-31 16:06:18,845 INFO L503 ceAbstractionStarter]: Automizer considered 33 witness invariants [2024-01-31 16:06:18,845 INFO L504 ceAbstractionStarter]: WitnessConsidered=33 [2024-01-31 16:06:18,846 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 04:06:18 BasicIcfg [2024-01-31 16:06:18,846 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-31 16:06:18,846 INFO L158 Benchmark]: Toolchain (without parser) took 197246.26ms. Allocated memory was 146.8MB in the beginning and 3.4GB in the end (delta: 3.3GB). Free memory was 110.8MB in the beginning and 2.4GB in the end (delta: -2.3GB). Peak memory consumption was 997.5MB. Max. memory is 16.1GB. [2024-01-31 16:06:18,846 INFO L158 Benchmark]: Witness Parser took 0.22ms. Allocated memory is still 146.8MB. Free memory was 120.1MB in the beginning and 119.9MB in the end (delta: 160.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:06:18,847 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 146.8MB. Free memory is still 107.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:06:18,847 INFO L158 Benchmark]: CACSL2BoogieTranslator took 930.98ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 110.8MB in the beginning and 134.2MB in the end (delta: -23.4MB). Peak memory consumption was 51.5MB. Max. memory is 16.1GB. [2024-01-31 16:06:18,847 INFO L158 Benchmark]: Boogie Procedure Inliner took 87.66ms. Allocated memory is still 176.2MB. Free memory was 133.3MB in the beginning and 131.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 16:06:18,847 INFO L158 Benchmark]: Boogie Preprocessor took 107.17ms. Allocated memory is still 176.2MB. Free memory was 131.2MB in the beginning and 128.1MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 16:06:18,848 INFO L158 Benchmark]: RCFGBuilder took 958.42ms. Allocated memory is still 176.2MB. Free memory was 128.1MB in the beginning and 113.0MB in the end (delta: 15.1MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2024-01-31 16:06:18,848 INFO L158 Benchmark]: TraceAbstraction took 195149.90ms. Allocated memory was 176.2MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 111.9MB in the beginning and 2.4GB in the end (delta: -2.3GB). Peak memory consumption was 968.9MB. Max. memory is 16.1GB. [2024-01-31 16:06:18,849 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.22ms. Allocated memory is still 146.8MB. Free memory was 120.1MB in the beginning and 119.9MB in the end (delta: 160.9kB). There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.17ms. Allocated memory is still 146.8MB. Free memory is still 107.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 930.98ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 110.8MB in the beginning and 134.2MB in the end (delta: -23.4MB). Peak memory consumption was 51.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 87.66ms. Allocated memory is still 176.2MB. Free memory was 133.3MB in the beginning and 131.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 107.17ms. Allocated memory is still 176.2MB. Free memory was 131.2MB in the beginning and 128.1MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 958.42ms. Allocated memory is still 176.2MB. Free memory was 128.1MB in the beginning and 113.0MB in the end (delta: 15.1MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. * TraceAbstraction took 195149.90ms. Allocated memory was 176.2MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 111.9MB in the beginning and 2.4GB in the end (delta: -2.3GB). Peak memory consumption was 968.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 769]: 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; [L711] 0 _Bool main$tmp_guard0; [L712] 0 _Bool main$tmp_guard1; [L714] 0 int x = 0; [L716] 0 int y = 0; [L758] 0 pthread_t t2021; VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, t2021={5:0}, x=0, y=0] [L759] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_cnt],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]]]]] [L759] FCALL, FORK 0 pthread_create(&t2021, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t2021={5:0}, x=0, y=0] [L760] 0 pthread_t t2022; [L719] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0] [L761] FCALL, FORK 0 pthread_create(&t2022, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t2021={5:0}, t2022={3:0}, x=0, y=0] [L720] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L720] 1 y = 2 [L721] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=2] [L722] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=2] [L723] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L723] 1 x = 1 [L724] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=2] [L725] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=2] [L726] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=2] [L734] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=2] [L735] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L735] 2 __unbuffered_p1_EAX = x [L736] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=2] [L737] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=2] [L738] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L738] 2 y = 1 [L739] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L740] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L741] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L727] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L742] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L728] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L728] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L729] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[__unbuffered_cnt]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=1, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L743] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L743] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L744] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[__unbuffered_cnt]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=2, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L763] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L763] 0 main$tmp_guard0 = __unbuffered_cnt == 2 [L764] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=2, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2021={5:0}, t2022={3:0}, x=1, y=1] [L765] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L765] RET 0 assume_abort_if_not(main$tmp_guard0) [L767] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=2, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2021={5:0}, t2022={3:0}, x=1, y=1] [L769] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=2, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2021={5:0}, t2022={3:0}, x=1, y=1] - UnprovableResult [Line: 719]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 720]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 721]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 722]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 723]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 724]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 725]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 726]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 727]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 728]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 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: 734]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 735]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 736]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 737]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 738]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 739]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 740]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 741]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 742]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 743]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 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: 759]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 763]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 764]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 767]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 770]: 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: 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. - UnprovableResult [Line: 759]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - 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: 194.9s, OverallIterations: 114, TraceHistogramMax: 1, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 169.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8593 SdHoareTripleChecker+Valid, 20.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7679 mSDsluCounter, 1979 SdHoareTripleChecker+Invalid, 16.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1697 mSDsCounter, 1480 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 24881 IncrementalHoareTripleChecker+Invalid, 26361 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1480 mSolverCounterUnsat, 282 mSDtfsCounter, 24881 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 712 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 680 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 7.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19330occurred in iteration=99, InterpolantAutomatonStates: 788, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 23.9s InterpolantComputationTime, 2086 NumberOfCodeBlocks, 2086 NumberOfCodeBlocksAsserted, 114 NumberOfCheckSat, 1945 ConstructedInterpolants, 0 QuantifiedInterpolants, 45730 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 113 InterpolantComputations, 113 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 16:06:18,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE