./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/safe029_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 59af5db6 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/safe029_tso.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-59af5db-m [2024-02-02 09:14:41,609 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-02 09:14:41,668 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-02 09:14:41,673 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-02 09:14:41,673 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-02 09:14:41,726 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-02 09:14:41,727 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-02 09:14:41,728 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-02 09:14:41,728 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-02 09:14:41,732 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-02 09:14:41,732 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-02 09:14:41,732 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-02 09:14:41,734 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-02 09:14:41,735 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-02 09:14:41,735 INFO L153 SettingsManager]: * Use SBE=true [2024-02-02 09:14:41,735 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-02 09:14:41,736 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-02 09:14:41,736 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-02 09:14:41,736 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-02 09:14:41,736 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-02 09:14:41,737 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-02 09:14:41,737 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-02 09:14:41,737 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-02 09:14:41,738 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-02 09:14:41,738 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-02 09:14:41,738 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-02 09:14:41,739 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-02 09:14:41,739 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-02 09:14:41,739 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-02 09:14:41,740 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-02 09:14:41,741 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-02 09:14:41,741 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-02 09:14:41,741 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 09:14:41,741 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-02 09:14:41,741 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-02 09:14:41,742 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-02 09:14:41,742 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-02 09:14:41,742 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-02 09:14:41,742 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-02 09:14:41,742 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-02 09:14:41,743 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-02 09:14:41,743 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-02 09:14:41,743 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-02 09:14:41,743 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-02 09:14:41,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-02 09:14:41,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-02 09:14:41,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-02 09:14:41,967 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-02 09:14:41,967 INFO L274 PluginConnector]: CDTParser initialized [2024-02-02 09:14:41,968 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.i [2024-02-02 09:14:43,052 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-02 09:14:43,288 INFO L384 CDTParser]: Found 1 translation units. [2024-02-02 09:14:43,288 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.i [2024-02-02 09:14:43,309 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad424e6f7/e3ccb9da3b3b48879daf0f1ae730f751/FLAGfd534e82f [2024-02-02 09:14:43,323 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad424e6f7/e3ccb9da3b3b48879daf0f1ae730f751 [2024-02-02 09:14:43,325 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-02 09:14:43,325 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-02 09:14:43,326 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/safe029_tso.yml/witness.yml [2024-02-02 09:14:43,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-02 09:14:43,472 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-02 09:14:43,473 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-02 09:14:43,473 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-02 09:14:43,477 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-02 09:14:43,477 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:14:43" (1/2) ... [2024-02-02 09:14:43,478 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cf3536d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:14:43, skipping insertion in model container [2024-02-02 09:14:43,479 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:14:43" (1/2) ... [2024-02-02 09:14:43,480 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@278dc0f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:14:43, skipping insertion in model container [2024-02-02 09:14:43,481 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:14:43" (2/2) ... [2024-02-02 09:14:43,481 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cf3536d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:14:43, skipping insertion in model container [2024-02-02 09:14:43,481 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:14:43" (2/2) ... [2024-02-02 09:14:43,481 INFO L86 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-02 09:14:43,602 INFO L99 nessWitnessExtractor]: Found the following entries in the witness: [2024-02-02 09:14:43,603 INFO L101 nessWitnessExtractor]: Location invariant before [L722-L722] ((((((((0 <= __unbuffered_cnt) && (0 <= y)) && (y <= 2)) && (y <= 127)) && (x == 1)) && ((unsigned long )arg == 0UL)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((y == 0 || y == 1) || y == 2) [2024-02-02 09:14:43,603 INFO L101 nessWitnessExtractor]: Location invariant before [L726-L726] (((((((((((0 <= __unbuffered_cnt) && (0 <= x)) && (0 <= y)) && (x <= 2)) && (x <= 127)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2) [2024-02-02 09:14:43,604 INFO L101 nessWitnessExtractor]: Location invariant before [L740-L740] (unsigned long )arg == 0UL [2024-02-02 09:14:43,604 INFO L101 nessWitnessExtractor]: Location invariant before [L720-L720] (unsigned long )arg == 0UL [2024-02-02 09:14:43,604 INFO L101 nessWitnessExtractor]: Location invariant before [L765-L765] ((((((((((0 <= __unbuffered_cnt) && (0 <= x)) && (0 <= y)) && (x <= 2)) && (x <= 127)) && (y <= 2)) && (y <= 127)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2) [2024-02-02 09:14:43,605 INFO L101 nessWitnessExtractor]: Location invariant before [L738-L738] (unsigned long )arg == 0UL [2024-02-02 09:14:43,605 INFO L101 nessWitnessExtractor]: Location invariant before [L735-L735] (unsigned long )arg == 0UL [2024-02-02 09:14:43,605 INFO L101 nessWitnessExtractor]: Location invariant before [L719-L719] ((((((((0 <= __unbuffered_cnt) && (0 <= x)) && (x <= 2)) && (x <= 127)) && (y == 2)) && ((unsigned long )arg == 0UL)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2) [2024-02-02 09:14:43,605 INFO L101 nessWitnessExtractor]: Location invariant before [L734-L734] ((((((((0 <= __unbuffered_cnt) && (0 <= y)) && (y <= 2)) && (y <= 127)) && (x == 2)) && ((unsigned long )arg == 0UL)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((y == 0 || y == 1) || y == 2) [2024-02-02 09:14:43,605 INFO L101 nessWitnessExtractor]: Location invariant before [L725-L725] (unsigned long )arg == 0UL [2024-02-02 09:14:43,605 INFO L101 nessWitnessExtractor]: Location invariant before [L18-L18] ((((expression == 0) && (0 <= expression)) && (expression <= 1)) && (expression == 0 || expression == 1)) && (expression == 1) [2024-02-02 09:14:43,605 INFO L101 nessWitnessExtractor]: Location invariant before [L762-L762] ((((((((((0 <= __unbuffered_cnt) && (0 <= x)) && (0 <= y)) && (x <= 2)) && (x <= 127)) && (y <= 2)) && (y <= 127)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2) [2024-02-02 09:14:43,606 INFO L101 nessWitnessExtractor]: Location invariant before [L717-L717] (unsigned long )arg == 0UL [2024-02-02 09:14:43,606 INFO L101 nessWitnessExtractor]: Location invariant before [L741-L741] (((((((((((0 <= __unbuffered_cnt) && (0 <= x)) && (0 <= y)) && (x <= 2)) && (x <= 127)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2) [2024-02-02 09:14:43,606 INFO L101 nessWitnessExtractor]: Location invariant before [L724-L724] (((((((((((0 <= __unbuffered_cnt) && (0 <= x)) && (0 <= y)) && (x <= 2)) && (x <= 127)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2) [2024-02-02 09:14:43,606 INFO L101 nessWitnessExtractor]: Location invariant before [L727-L727] (((((((((((0 <= x) && (0 <= y)) && (1 <= __unbuffered_cnt)) && (x <= 2)) && (x <= 127)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2) [2024-02-02 09:14:43,606 INFO L101 nessWitnessExtractor]: Location invariant before [L767-L767] (((((((0 <= __unbuffered_cnt) && (0 <= y)) && (y <= 2)) && (y <= 127)) && (x == 2)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((y == 0 || y == 1) || y == 2) [2024-02-02 09:14:43,606 INFO L101 nessWitnessExtractor]: Location invariant before [L728-L728] (unsigned long )arg == 0UL [2024-02-02 09:14:43,607 INFO L101 nessWitnessExtractor]: Location invariant before [L743-L743] (unsigned long )arg == 0UL [2024-02-02 09:14:43,607 INFO L101 nessWitnessExtractor]: Location invariant before [L737-L737] ((((((((0 <= __unbuffered_cnt) && (0 <= x)) && (x <= 2)) && (x <= 127)) && (y == 1)) && ((unsigned long )arg == 0UL)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2) [2024-02-02 09:14:43,607 INFO L101 nessWitnessExtractor]: Location invariant before [L723-L723] (unsigned long )arg == 0UL [2024-02-02 09:14:43,607 INFO L101 nessWitnessExtractor]: Location invariant before [L761-L761] ((((((((((0 <= __unbuffered_cnt) && (0 <= x)) && (0 <= y)) && (x <= 2)) && (x <= 127)) && (y <= 2)) && (y <= 127)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2) [2024-02-02 09:14:43,607 INFO L101 nessWitnessExtractor]: Location invariant before [L718-L718] (((((((((((0 <= __unbuffered_cnt) && (0 <= x)) && (0 <= y)) && (x <= 2)) && (x <= 127)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2) [2024-02-02 09:14:43,608 INFO L101 nessWitnessExtractor]: Location invariant before [L736-L736] (((((((((((0 <= __unbuffered_cnt) && (0 <= x)) && (0 <= y)) && (x <= 2)) && (x <= 127)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2) [2024-02-02 09:14:43,608 INFO L101 nessWitnessExtractor]: Location invariant before [L757-L757] ((((__unbuffered_cnt == 0) && (main$tmp_guard0 == (_Bool)0)) && (main$tmp_guard1 == (_Bool)0)) && (x == 0)) && (y == 0) [2024-02-02 09:14:43,608 INFO L101 nessWitnessExtractor]: Location invariant before [L768-L768] ((((((((((0 <= __unbuffered_cnt) && (0 <= x)) && (0 <= y)) && (x <= 2)) && (x <= 127)) && (y <= 2)) && (y <= 127)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2) [2024-02-02 09:14:43,608 INFO L101 nessWitnessExtractor]: Location invariant before [L742-L742] (((((((((((0 <= x) && (0 <= y)) && (1 <= __unbuffered_cnt)) && (x <= 2)) && (x <= 127)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2) [2024-02-02 09:14:43,608 INFO L101 nessWitnessExtractor]: Location invariant before [L733-L733] (((((((((((0 <= __unbuffered_cnt) && (0 <= x)) && (0 <= y)) && (x <= 2)) && (x <= 127)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2) [2024-02-02 09:14:43,608 INFO L101 nessWitnessExtractor]: Location invariant before [L732-L732] (unsigned long )arg == 0UL [2024-02-02 09:14:43,608 INFO L101 nessWitnessExtractor]: Location invariant before [L721-L721] (((((((((((0 <= __unbuffered_cnt) && (0 <= x)) && (0 <= y)) && (x <= 2)) && (x <= 127)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2) [2024-02-02 09:14:43,608 INFO L101 nessWitnessExtractor]: Location invariant before [L739-L739] (((((((((((0 <= __unbuffered_cnt) && (0 <= x)) && (0 <= y)) && (x <= 2)) && (x <= 127)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2) [2024-02-02 09:14:43,653 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-02 09:14:43,801 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.i[945,958] [2024-02-02 09:14:43,971 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 09:14:43,979 INFO L202 MainTranslator]: Completed pre-run [2024-02-02 09:14:43,989 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.i[945,958] [2024-02-02 09:14:43,991 WARN L424 MainDispatcher]: Unable to annotate void __VERIFIER_assert(int expression) { if (!expression) { ERROR: {reach_error();abort();} }; return; } with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-02 09:14:44,115 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 09:14:44,142 INFO L206 MainTranslator]: Completed translation [2024-02-02 09:14:44,142 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:14:44 WrapperNode [2024-02-02 09:14:44,142 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-02 09:14:44,143 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-02 09:14:44,143 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-02 09:14:44,143 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-02 09:14:44,149 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:14:44" (1/1) ... [2024-02-02 09:14:44,161 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:14:44" (1/1) ... [2024-02-02 09:14:44,179 INFO L138 Inliner]: procedures = 175, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 62 [2024-02-02 09:14:44,179 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-02 09:14:44,180 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-02 09:14:44,180 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-02 09:14:44,180 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-02 09:14:44,191 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:14:44" (1/1) ... [2024-02-02 09:14:44,191 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:14:44" (1/1) ... [2024-02-02 09:14:44,194 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:14:44" (1/1) ... [2024-02-02 09:14:44,214 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-02-02 09:14:44,216 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:14:44" (1/1) ... [2024-02-02 09:14:44,216 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:14:44" (1/1) ... [2024-02-02 09:14:44,231 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:14:44" (1/1) ... [2024-02-02 09:14:44,239 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:14:44" (1/1) ... [2024-02-02 09:14:44,242 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:14:44" (1/1) ... [2024-02-02 09:14:44,246 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:14:44" (1/1) ... [2024-02-02 09:14:44,249 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-02 09:14:44,249 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-02 09:14:44,249 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-02 09:14:44,250 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-02 09:14:44,250 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:14:44" (1/1) ... [2024-02-02 09:14:44,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 09:14:44,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 09:14:44,334 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-02 09:14:44,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-02 09:14:44,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-02 09:14:44,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-02 09:14:44,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-02 09:14:44,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-02 09:14:44,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-02 09:14:44,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-02 09:14:44,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-02 09:14:44,411 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-02-02 09:14:44,412 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-02-02 09:14:44,412 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-02-02 09:14:44,412 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-02-02 09:14:44,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-02 09:14:44,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-02 09:14:44,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-02 09:14:44,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-02 09:14:44,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-02 09:14:44,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-02 09:14:44,414 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-02 09:14:44,540 INFO L244 CfgBuilder]: Building ICFG [2024-02-02 09:14:44,542 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-02 09:14:44,810 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-02 09:14:44,811 INFO L293 CfgBuilder]: Performing block encoding [2024-02-02 09:14:44,965 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-02 09:14:44,965 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-02 09:14:44,966 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:14:44 BoogieIcfgContainer [2024-02-02 09:14:44,966 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-02 09:14:44,967 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-02 09:14:44,968 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-02 09:14:44,971 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-02 09:14:44,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 09:14:43" (1/4) ... [2024-02-02 09:14:44,972 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cee400c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:14:44, skipping insertion in model container [2024-02-02 09:14:44,972 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:14:43" (2/4) ... [2024-02-02 09:14:44,973 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cee400c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 02.02 09:14:44, skipping insertion in model container [2024-02-02 09:14:44,973 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:14:44" (3/4) ... [2024-02-02 09:14:44,973 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cee400c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 02.02 09:14:44, skipping insertion in model container [2024-02-02 09:14:44,973 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:14:44" (4/4) ... [2024-02-02 09:14:44,974 INFO L112 eAbstractionObserver]: Analyzing ICFG safe029_tso.i [2024-02-02 09:14:44,987 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-02 09:14:44,988 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2024-02-02 09:14:44,988 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-02 09:14:45,127 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-02 09:14:45,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 68 transitions, 144 flow [2024-02-02 09:14:45,202 INFO L124 PetriNetUnfolderBase]: 1/66 cut-off events. [2024-02-02 09:14:45,202 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:14:45,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 66 events. 1/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 223 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2024-02-02 09:14:45,208 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 68 transitions, 144 flow [2024-02-02 09:14:45,211 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 66 transitions, 138 flow [2024-02-02 09:14:45,219 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-02 09:14:45,224 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;@6e9c9b2d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-02 09:14:45,224 INFO L358 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2024-02-02 09:14:45,226 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-02 09:14:45,226 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-02 09:14:45,226 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:14:45,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:45,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-02 09:14:45,227 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:45,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:45,231 INFO L85 PathProgramCache]: Analyzing trace with hash 9588, now seen corresponding path program 1 times [2024-02-02 09:14:45,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:45,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721208479] [2024-02-02 09:14:45,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:45,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:45,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:45,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:45,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:45,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721208479] [2024-02-02 09:14:45,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721208479] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:45,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:45,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-02 09:14:45,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396371424] [2024-02-02 09:14:45,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:45,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:14:45,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:45,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:14:45,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:14:45,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 68 [2024-02-02 09:14:45,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 66 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:45,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:45,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 68 [2024-02-02 09:14:45,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:46,115 INFO L124 PetriNetUnfolderBase]: 1835/3437 cut-off events. [2024-02-02 09:14:46,116 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-02-02 09:14:46,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6388 conditions, 3437 events. 1835/3437 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 26107 event pairs, 1363 based on Foata normal form. 100/2153 useless extension candidates. Maximal degree in co-relation 6376. Up to 2897 conditions per place. [2024-02-02 09:14:46,139 INFO L140 encePairwiseOnDemand]: 53/68 looper letters, 38 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2024-02-02 09:14:46,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 64 transitions, 219 flow [2024-02-02 09:14:46,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:14:46,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:14:46,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 131 transitions. [2024-02-02 09:14:46,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6421568627450981 [2024-02-02 09:14:46,151 INFO L175 Difference]: Start difference. First operand has 72 places, 66 transitions, 138 flow. Second operand 3 states and 131 transitions. [2024-02-02 09:14:46,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 64 transitions, 219 flow [2024-02-02 09:14:46,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 64 transitions, 216 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:14:46,155 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 137 flow [2024-02-02 09:14:46,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2024-02-02 09:14:46,160 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -8 predicate places. [2024-02-02 09:14:46,160 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 137 flow [2024-02-02 09:14:46,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:46,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:46,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-02 09:14:46,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-02 09:14:46,161 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:46,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:46,161 INFO L85 PathProgramCache]: Analyzing trace with hash 286016975, now seen corresponding path program 1 times [2024-02-02 09:14:46,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:46,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025166515] [2024-02-02 09:14:46,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:46,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:46,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:46,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:46,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:46,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025166515] [2024-02-02 09:14:46,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025166515] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:46,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:46,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:14:46,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139871866] [2024-02-02 09:14:46,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:46,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:14:46,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:46,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:14:46,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:14:46,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 68 [2024-02-02 09:14:46,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:46,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:46,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 68 [2024-02-02 09:14:46,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:46,738 INFO L124 PetriNetUnfolderBase]: 2004/3688 cut-off events. [2024-02-02 09:14:46,739 INFO L125 PetriNetUnfolderBase]: For 336/336 co-relation queries the response was YES. [2024-02-02 09:14:46,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7325 conditions, 3688 events. 2004/3688 cut-off events. For 336/336 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 27597 event pairs, 1378 based on Foata normal form. 432/3010 useless extension candidates. Maximal degree in co-relation 7312. Up to 3018 conditions per place. [2024-02-02 09:14:46,758 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 55 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2024-02-02 09:14:46,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 74 transitions, 292 flow [2024-02-02 09:14:46,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:14:46,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:14:46,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 140 transitions. [2024-02-02 09:14:46,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5147058823529411 [2024-02-02 09:14:46,759 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 137 flow. Second operand 4 states and 140 transitions. [2024-02-02 09:14:46,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 74 transitions, 292 flow [2024-02-02 09:14:46,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 74 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-02 09:14:46,761 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 128 flow [2024-02-02 09:14:46,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2024-02-02 09:14:46,762 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -11 predicate places. [2024-02-02 09:14:46,762 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 128 flow [2024-02-02 09:14:46,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:46,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:46,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-02 09:14:46,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-02 09:14:46,762 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:46,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:46,763 INFO L85 PathProgramCache]: Analyzing trace with hash 276591977, now seen corresponding path program 1 times [2024-02-02 09:14:46,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:46,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735525951] [2024-02-02 09:14:46,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:46,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:46,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:46,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:46,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:46,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735525951] [2024-02-02 09:14:46,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735525951] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:46,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:46,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:14:46,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361269235] [2024-02-02 09:14:46,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:46,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-02 09:14:46,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:46,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-02 09:14:46,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-02-02 09:14:46,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 68 [2024-02-02 09:14:46,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 128 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:46,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:46,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 68 [2024-02-02 09:14:46,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:47,593 INFO L124 PetriNetUnfolderBase]: 2764/4908 cut-off events. [2024-02-02 09:14:47,593 INFO L125 PetriNetUnfolderBase]: For 548/554 co-relation queries the response was YES. [2024-02-02 09:14:47,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9924 conditions, 4908 events. 2764/4908 cut-off events. For 548/554 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 35488 event pairs, 2064 based on Foata normal form. 11/3562 useless extension candidates. Maximal degree in co-relation 9910. Up to 4329 conditions per place. [2024-02-02 09:14:47,638 INFO L140 encePairwiseOnDemand]: 63/68 looper letters, 48 selfloop transitions, 5 changer transitions 0/66 dead transitions. [2024-02-02 09:14:47,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 66 transitions, 268 flow [2024-02-02 09:14:47,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:14:47,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:14:47,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2024-02-02 09:14:47,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41911764705882354 [2024-02-02 09:14:47,646 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 128 flow. Second operand 4 states and 114 transitions. [2024-02-02 09:14:47,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 66 transitions, 268 flow [2024-02-02 09:14:47,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 66 transitions, 264 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:14:47,650 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 151 flow [2024-02-02 09:14:47,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=151, PETRI_PLACES=64, PETRI_TRANSITIONS=55} [2024-02-02 09:14:47,652 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -8 predicate places. [2024-02-02 09:14:47,653 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 151 flow [2024-02-02 09:14:47,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:47,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:47,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:47,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-02 09:14:47,654 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:47,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:47,655 INFO L85 PathProgramCache]: Analyzing trace with hash -16939315, now seen corresponding path program 1 times [2024-02-02 09:14:47,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:47,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517407894] [2024-02-02 09:14:47,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:47,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:47,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:47,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:47,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:47,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517407894] [2024-02-02 09:14:47,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517407894] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:47,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:47,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:14:47,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690810991] [2024-02-02 09:14:47,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:47,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:14:47,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:47,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:14:47,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:14:47,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 68 [2024-02-02 09:14:47,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 151 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:47,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:47,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 68 [2024-02-02 09:14:47,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:48,182 INFO L124 PetriNetUnfolderBase]: 2060/3657 cut-off events. [2024-02-02 09:14:48,182 INFO L125 PetriNetUnfolderBase]: For 500/508 co-relation queries the response was YES. [2024-02-02 09:14:48,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7548 conditions, 3657 events. 2060/3657 cut-off events. For 500/508 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 25387 event pairs, 1105 based on Foata normal form. 462/3113 useless extension candidates. Maximal degree in co-relation 7532. Up to 3119 conditions per place. [2024-02-02 09:14:48,203 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 61 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2024-02-02 09:14:48,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 76 transitions, 333 flow [2024-02-02 09:14:48,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:14:48,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:14:48,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 145 transitions. [2024-02-02 09:14:48,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5330882352941176 [2024-02-02 09:14:48,206 INFO L175 Difference]: Start difference. First operand has 64 places, 55 transitions, 151 flow. Second operand 4 states and 145 transitions. [2024-02-02 09:14:48,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 76 transitions, 333 flow [2024-02-02 09:14:48,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 76 transitions, 321 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:14:48,209 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 137 flow [2024-02-02 09:14:48,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=137, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2024-02-02 09:14:48,211 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -12 predicate places. [2024-02-02 09:14:48,211 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 137 flow [2024-02-02 09:14:48,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:48,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:48,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:48,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-02 09:14:48,212 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:48,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:48,213 INFO L85 PathProgramCache]: Analyzing trace with hash -525118399, now seen corresponding path program 1 times [2024-02-02 09:14:48,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:48,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204170892] [2024-02-02 09:14:48,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:48,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:48,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:48,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:48,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:48,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204170892] [2024-02-02 09:14:48,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204170892] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:48,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:48,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:14:48,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850791484] [2024-02-02 09:14:48,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:48,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-02 09:14:48,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:48,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-02 09:14:48,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-02-02 09:14:48,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 68 [2024-02-02 09:14:48,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 137 flow. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:48,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:48,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 68 [2024-02-02 09:14:48,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:48,891 INFO L124 PetriNetUnfolderBase]: 2844/4942 cut-off events. [2024-02-02 09:14:48,891 INFO L125 PetriNetUnfolderBase]: For 674/682 co-relation queries the response was YES. [2024-02-02 09:14:48,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10298 conditions, 4942 events. 2844/4942 cut-off events. For 674/682 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 33964 event pairs, 2305 based on Foata normal form. 11/3632 useless extension candidates. Maximal degree in co-relation 10283. Up to 4537 conditions per place. [2024-02-02 09:14:48,911 INFO L140 encePairwiseOnDemand]: 63/68 looper letters, 44 selfloop transitions, 6 changer transitions 0/59 dead transitions. [2024-02-02 09:14:48,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 59 transitions, 264 flow [2024-02-02 09:14:48,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:14:48,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:14:48,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2024-02-02 09:14:48,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40441176470588236 [2024-02-02 09:14:48,913 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 137 flow. Second operand 4 states and 110 transitions. [2024-02-02 09:14:48,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 59 transitions, 264 flow [2024-02-02 09:14:48,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 59 transitions, 258 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:14:48,914 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 164 flow [2024-02-02 09:14:48,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2024-02-02 09:14:48,915 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -9 predicate places. [2024-02-02 09:14:48,915 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 164 flow [2024-02-02 09:14:48,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:48,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:48,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:48,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-02 09:14:48,916 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:48,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:48,916 INFO L85 PathProgramCache]: Analyzing trace with hash -483070388, now seen corresponding path program 1 times [2024-02-02 09:14:48,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:48,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171445496] [2024-02-02 09:14:48,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:48,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:49,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:49,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:49,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171445496] [2024-02-02 09:14:49,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171445496] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:49,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:49,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-02 09:14:49,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702766805] [2024-02-02 09:14:49,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:49,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-02 09:14:49,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:49,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-02 09:14:49,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-02 09:14:49,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:49,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 164 flow. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:49,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:49,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:49,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:49,568 INFO L124 PetriNetUnfolderBase]: 2644/4652 cut-off events. [2024-02-02 09:14:49,568 INFO L125 PetriNetUnfolderBase]: For 711/732 co-relation queries the response was YES. [2024-02-02 09:14:49,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9783 conditions, 4652 events. 2644/4652 cut-off events. For 711/732 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 32776 event pairs, 1809 based on Foata normal form. 12/3411 useless extension candidates. Maximal degree in co-relation 9765. Up to 4131 conditions per place. [2024-02-02 09:14:49,595 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 52 selfloop transitions, 8 changer transitions 0/69 dead transitions. [2024-02-02 09:14:49,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 69 transitions, 329 flow [2024-02-02 09:14:49,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:14:49,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:14:49,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 142 transitions. [2024-02-02 09:14:49,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176470588235294 [2024-02-02 09:14:49,596 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 164 flow. Second operand 5 states and 142 transitions. [2024-02-02 09:14:49,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 69 transitions, 329 flow [2024-02-02 09:14:49,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 69 transitions, 324 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-02 09:14:49,599 INFO L231 Difference]: Finished difference. Result has 67 places, 54 transitions, 195 flow [2024-02-02 09:14:49,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=195, PETRI_PLACES=67, PETRI_TRANSITIONS=54} [2024-02-02 09:14:49,599 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -5 predicate places. [2024-02-02 09:14:49,600 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 54 transitions, 195 flow [2024-02-02 09:14:49,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:49,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:49,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:49,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-02 09:14:49,600 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:49,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:49,601 INFO L85 PathProgramCache]: Analyzing trace with hash -2127645120, now seen corresponding path program 1 times [2024-02-02 09:14:49,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:49,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321198988] [2024-02-02 09:14:49,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:49,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:49,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:49,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:49,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321198988] [2024-02-02 09:14:49,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321198988] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:49,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:49,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:14:49,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350348286] [2024-02-02 09:14:49,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:49,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-02 09:14:49,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:49,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-02 09:14:49,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-02-02 09:14:49,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:14:49,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 54 transitions, 195 flow. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:49,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:49,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:14:49,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:50,060 INFO L124 PetriNetUnfolderBase]: 1740/3201 cut-off events. [2024-02-02 09:14:50,061 INFO L125 PetriNetUnfolderBase]: For 1052/1054 co-relation queries the response was YES. [2024-02-02 09:14:50,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7038 conditions, 3201 events. 1740/3201 cut-off events. For 1052/1054 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 23113 event pairs, 1290 based on Foata normal form. 14/2256 useless extension candidates. Maximal degree in co-relation 7018. Up to 2777 conditions per place. [2024-02-02 09:14:50,078 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 42 selfloop transitions, 7 changer transitions 0/64 dead transitions. [2024-02-02 09:14:50,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 64 transitions, 319 flow [2024-02-02 09:14:50,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:14:50,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:14:50,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 151 transitions. [2024-02-02 09:14:50,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5551470588235294 [2024-02-02 09:14:50,080 INFO L175 Difference]: Start difference. First operand has 67 places, 54 transitions, 195 flow. Second operand 4 states and 151 transitions. [2024-02-02 09:14:50,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 64 transitions, 319 flow [2024-02-02 09:14:50,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 64 transitions, 305 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-02-02 09:14:50,082 INFO L231 Difference]: Finished difference. Result has 68 places, 56 transitions, 213 flow [2024-02-02 09:14:50,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=213, PETRI_PLACES=68, PETRI_TRANSITIONS=56} [2024-02-02 09:14:50,084 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -4 predicate places. [2024-02-02 09:14:50,084 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 56 transitions, 213 flow [2024-02-02 09:14:50,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:50,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:50,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:50,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-02 09:14:50,085 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:50,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:50,085 INFO L85 PathProgramCache]: Analyzing trace with hash -2127595036, now seen corresponding path program 1 times [2024-02-02 09:14:50,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:50,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377034793] [2024-02-02 09:14:50,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:50,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:50,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:50,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:50,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:50,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377034793] [2024-02-02 09:14:50,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377034793] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:50,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:50,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-02 09:14:50,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734039017] [2024-02-02 09:14:50,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:50,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-02 09:14:50,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:50,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-02 09:14:50,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-02 09:14:50,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:50,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 56 transitions, 213 flow. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:50,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:50,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:50,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:50,651 INFO L124 PetriNetUnfolderBase]: 2562/4549 cut-off events. [2024-02-02 09:14:50,651 INFO L125 PetriNetUnfolderBase]: For 2388/2396 co-relation queries the response was YES. [2024-02-02 09:14:50,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10594 conditions, 4549 events. 2562/4549 cut-off events. For 2388/2396 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 31525 event pairs, 1876 based on Foata normal form. 17/3456 useless extension candidates. Maximal degree in co-relation 10573. Up to 4063 conditions per place. [2024-02-02 09:14:50,671 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 50 selfloop transitions, 8 changer transitions 0/67 dead transitions. [2024-02-02 09:14:50,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 67 transitions, 356 flow [2024-02-02 09:14:50,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:14:50,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:14:50,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2024-02-02 09:14:50,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-02-02 09:14:50,672 INFO L175 Difference]: Start difference. First operand has 68 places, 56 transitions, 213 flow. Second operand 5 states and 136 transitions. [2024-02-02 09:14:50,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 67 transitions, 356 flow [2024-02-02 09:14:50,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 67 transitions, 344 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-02-02 09:14:50,675 INFO L231 Difference]: Finished difference. Result has 71 places, 56 transitions, 223 flow [2024-02-02 09:14:50,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=223, PETRI_PLACES=71, PETRI_TRANSITIONS=56} [2024-02-02 09:14:50,676 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -1 predicate places. [2024-02-02 09:14:50,676 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 56 transitions, 223 flow [2024-02-02 09:14:50,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:50,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:50,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:50,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-02 09:14:50,677 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:50,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:50,677 INFO L85 PathProgramCache]: Analyzing trace with hash -374162673, now seen corresponding path program 1 times [2024-02-02 09:14:50,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:50,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320229990] [2024-02-02 09:14:50,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:50,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:50,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:50,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:50,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:50,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320229990] [2024-02-02 09:14:50,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320229990] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:50,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:50,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:14:50,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559313964] [2024-02-02 09:14:50,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:50,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:14:50,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:50,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:14:50,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:14:50,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:50,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 56 transitions, 223 flow. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:50,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:50,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:50,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:51,252 INFO L124 PetriNetUnfolderBase]: 1528/2774 cut-off events. [2024-02-02 09:14:51,253 INFO L125 PetriNetUnfolderBase]: For 2286/2307 co-relation queries the response was YES. [2024-02-02 09:14:51,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6622 conditions, 2774 events. 1528/2774 cut-off events. For 2286/2307 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 17301 event pairs, 322 based on Foata normal form. 150/2402 useless extension candidates. Maximal degree in co-relation 6600. Up to 1340 conditions per place. [2024-02-02 09:14:51,268 INFO L140 encePairwiseOnDemand]: 56/68 looper letters, 97 selfloop transitions, 19 changer transitions 0/125 dead transitions. [2024-02-02 09:14:51,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 125 transitions, 657 flow [2024-02-02 09:14:51,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:14:51,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:14:51,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 214 transitions. [2024-02-02 09:14:51,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5245098039215687 [2024-02-02 09:14:51,270 INFO L175 Difference]: Start difference. First operand has 71 places, 56 transitions, 223 flow. Second operand 6 states and 214 transitions. [2024-02-02 09:14:51,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 125 transitions, 657 flow [2024-02-02 09:14:51,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 125 transitions, 639 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-02 09:14:51,274 INFO L231 Difference]: Finished difference. Result has 76 places, 69 transitions, 345 flow [2024-02-02 09:14:51,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=345, PETRI_PLACES=76, PETRI_TRANSITIONS=69} [2024-02-02 09:14:51,275 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 4 predicate places. [2024-02-02 09:14:51,275 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 69 transitions, 345 flow [2024-02-02 09:14:51,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:51,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:51,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:51,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-02 09:14:51,276 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:51,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:51,276 INFO L85 PathProgramCache]: Analyzing trace with hash 400812610, now seen corresponding path program 1 times [2024-02-02 09:14:51,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:51,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039204982] [2024-02-02 09:14:51,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:51,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:51,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:51,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:51,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:51,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039204982] [2024-02-02 09:14:51,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039204982] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:51,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:51,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-02 09:14:51,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834097323] [2024-02-02 09:14:51,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:51,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-02 09:14:51,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:51,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-02 09:14:51,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-02 09:14:51,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:51,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 69 transitions, 345 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:51,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:51,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:51,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:51,756 INFO L124 PetriNetUnfolderBase]: 1499/2740 cut-off events. [2024-02-02 09:14:51,757 INFO L125 PetriNetUnfolderBase]: For 4024/4032 co-relation queries the response was YES. [2024-02-02 09:14:51,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7675 conditions, 2740 events. 1499/2740 cut-off events. For 4024/4032 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 17054 event pairs, 907 based on Foata normal form. 11/2535 useless extension candidates. Maximal degree in co-relation 7649. Up to 2458 conditions per place. [2024-02-02 09:14:51,772 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 65 selfloop transitions, 10 changer transitions 0/85 dead transitions. [2024-02-02 09:14:51,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 85 transitions, 545 flow [2024-02-02 09:14:51,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:14:51,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:14:51,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2024-02-02 09:14:51,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2024-02-02 09:14:51,774 INFO L175 Difference]: Start difference. First operand has 76 places, 69 transitions, 345 flow. Second operand 5 states and 140 transitions. [2024-02-02 09:14:51,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 85 transitions, 545 flow [2024-02-02 09:14:51,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 85 transitions, 537 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-02-02 09:14:51,780 INFO L231 Difference]: Finished difference. Result has 82 places, 72 transitions, 385 flow [2024-02-02 09:14:51,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=385, PETRI_PLACES=82, PETRI_TRANSITIONS=72} [2024-02-02 09:14:51,782 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 10 predicate places. [2024-02-02 09:14:51,784 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 72 transitions, 385 flow [2024-02-02 09:14:51,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:51,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:51,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:51,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-02 09:14:51,785 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:51,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:51,786 INFO L85 PathProgramCache]: Analyzing trace with hash -165546876, now seen corresponding path program 2 times [2024-02-02 09:14:51,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:51,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061209113] [2024-02-02 09:14:51,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:51,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:51,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:51,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:51,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:51,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061209113] [2024-02-02 09:14:51,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061209113] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:51,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:51,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-02 09:14:51,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276758624] [2024-02-02 09:14:51,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:51,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-02 09:14:51,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:51,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-02 09:14:51,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-02 09:14:51,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:51,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 72 transitions, 385 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:51,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:51,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:51,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:52,286 INFO L124 PetriNetUnfolderBase]: 1494/2725 cut-off events. [2024-02-02 09:14:52,286 INFO L125 PetriNetUnfolderBase]: For 4259/4267 co-relation queries the response was YES. [2024-02-02 09:14:52,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7737 conditions, 2725 events. 1494/2725 cut-off events. For 4259/4267 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 16973 event pairs, 914 based on Foata normal form. 11/2519 useless extension candidates. Maximal degree in co-relation 7707. Up to 2455 conditions per place. [2024-02-02 09:14:52,311 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 61 selfloop transitions, 11 changer transitions 0/82 dead transitions. [2024-02-02 09:14:52,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 82 transitions, 561 flow [2024-02-02 09:14:52,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:14:52,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:14:52,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 136 transitions. [2024-02-02 09:14:52,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-02-02 09:14:52,313 INFO L175 Difference]: Start difference. First operand has 82 places, 72 transitions, 385 flow. Second operand 5 states and 136 transitions. [2024-02-02 09:14:52,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 82 transitions, 561 flow [2024-02-02 09:14:52,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 82 transitions, 539 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-02-02 09:14:52,321 INFO L231 Difference]: Finished difference. Result has 84 places, 73 transitions, 401 flow [2024-02-02 09:14:52,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=401, PETRI_PLACES=84, PETRI_TRANSITIONS=73} [2024-02-02 09:14:52,322 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 12 predicate places. [2024-02-02 09:14:52,322 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 73 transitions, 401 flow [2024-02-02 09:14:52,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:52,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:52,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:52,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-02-02 09:14:52,323 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:52,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:52,323 INFO L85 PathProgramCache]: Analyzing trace with hash -165546216, now seen corresponding path program 1 times [2024-02-02 09:14:52,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:52,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607126841] [2024-02-02 09:14:52,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:52,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:52,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:52,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:52,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:52,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607126841] [2024-02-02 09:14:52,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607126841] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:52,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:52,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-02 09:14:52,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136068891] [2024-02-02 09:14:52,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:52,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-02 09:14:52,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:52,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-02 09:14:52,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-02 09:14:52,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:52,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 73 transitions, 401 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:52,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:52,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:52,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:52,857 INFO L124 PetriNetUnfolderBase]: 1536/2763 cut-off events. [2024-02-02 09:14:52,857 INFO L125 PetriNetUnfolderBase]: For 4003/4039 co-relation queries the response was YES. [2024-02-02 09:14:52,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7851 conditions, 2763 events. 1536/2763 cut-off events. For 4003/4039 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 17214 event pairs, 908 based on Foata normal form. 7/2470 useless extension candidates. Maximal degree in co-relation 7820. Up to 2498 conditions per place. [2024-02-02 09:14:52,873 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 68 selfloop transitions, 11 changer transitions 0/89 dead transitions. [2024-02-02 09:14:52,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 89 transitions, 617 flow [2024-02-02 09:14:52,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:14:52,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:14:52,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 139 transitions. [2024-02-02 09:14:52,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4088235294117647 [2024-02-02 09:14:52,874 INFO L175 Difference]: Start difference. First operand has 84 places, 73 transitions, 401 flow. Second operand 5 states and 139 transitions. [2024-02-02 09:14:52,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 89 transitions, 617 flow [2024-02-02 09:14:52,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 89 transitions, 602 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:14:52,880 INFO L231 Difference]: Finished difference. Result has 88 places, 77 transitions, 446 flow [2024-02-02 09:14:52,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=446, PETRI_PLACES=88, PETRI_TRANSITIONS=77} [2024-02-02 09:14:52,880 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 16 predicate places. [2024-02-02 09:14:52,881 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 77 transitions, 446 flow [2024-02-02 09:14:52,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:52,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:52,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:52,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-02-02 09:14:52,881 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:52,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:52,882 INFO L85 PathProgramCache]: Analyzing trace with hash 419853160, now seen corresponding path program 2 times [2024-02-02 09:14:52,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:52,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503834551] [2024-02-02 09:14:52,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:52,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:52,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:52,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:52,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:52,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503834551] [2024-02-02 09:14:52,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503834551] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:52,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:52,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-02 09:14:52,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745554823] [2024-02-02 09:14:52,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:52,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-02 09:14:52,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:52,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-02 09:14:52,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-02 09:14:53,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:53,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 77 transitions, 446 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:53,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:53,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:53,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:53,345 INFO L124 PetriNetUnfolderBase]: 1531/2759 cut-off events. [2024-02-02 09:14:53,345 INFO L125 PetriNetUnfolderBase]: For 4279/4301 co-relation queries the response was YES. [2024-02-02 09:14:53,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7907 conditions, 2759 events. 1531/2759 cut-off events. For 4279/4301 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 17146 event pairs, 905 based on Foata normal form. 4/2465 useless extension candidates. Maximal degree in co-relation 7873. Up to 2495 conditions per place. [2024-02-02 09:14:53,362 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 66 selfloop transitions, 11 changer transitions 0/87 dead transitions. [2024-02-02 09:14:53,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 87 transitions, 624 flow [2024-02-02 09:14:53,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:14:53,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:14:53,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2024-02-02 09:14:53,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40294117647058825 [2024-02-02 09:14:53,364 INFO L175 Difference]: Start difference. First operand has 88 places, 77 transitions, 446 flow. Second operand 5 states and 137 transitions. [2024-02-02 09:14:53,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 87 transitions, 624 flow [2024-02-02 09:14:53,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 87 transitions, 614 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-02-02 09:14:53,370 INFO L231 Difference]: Finished difference. Result has 92 places, 77 transitions, 463 flow [2024-02-02 09:14:53,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=463, PETRI_PLACES=92, PETRI_TRANSITIONS=77} [2024-02-02 09:14:53,371 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 20 predicate places. [2024-02-02 09:14:53,371 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 77 transitions, 463 flow [2024-02-02 09:14:53,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:53,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:53,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:53,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-02-02 09:14:53,372 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:53,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:53,372 INFO L85 PathProgramCache]: Analyzing trace with hash -262469443, now seen corresponding path program 1 times [2024-02-02 09:14:53,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:53,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617983893] [2024-02-02 09:14:53,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:53,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:53,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:53,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:53,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617983893] [2024-02-02 09:14:53,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617983893] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:53,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:53,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-02 09:14:53,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439211267] [2024-02-02 09:14:53,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:53,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-02 09:14:53,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:53,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-02 09:14:53,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-02 09:14:53,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:14:53,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 77 transitions, 463 flow. Second operand has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:53,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:53,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:14:53,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:53,755 INFO L124 PetriNetUnfolderBase]: 1195/2266 cut-off events. [2024-02-02 09:14:53,755 INFO L125 PetriNetUnfolderBase]: For 4179/4190 co-relation queries the response was YES. [2024-02-02 09:14:53,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6523 conditions, 2266 events. 1195/2266 cut-off events. For 4179/4190 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 15230 event pairs, 395 based on Foata normal form. 44/2063 useless extension candidates. Maximal degree in co-relation 6487. Up to 1177 conditions per place. [2024-02-02 09:14:53,766 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 74 selfloop transitions, 22 changer transitions 0/114 dead transitions. [2024-02-02 09:14:53,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 114 transitions, 789 flow [2024-02-02 09:14:53,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:14:53,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:14:53,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 213 transitions. [2024-02-02 09:14:53,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6264705882352941 [2024-02-02 09:14:53,768 INFO L175 Difference]: Start difference. First operand has 92 places, 77 transitions, 463 flow. Second operand 5 states and 213 transitions. [2024-02-02 09:14:53,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 114 transitions, 789 flow [2024-02-02 09:14:53,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 114 transitions, 757 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-02-02 09:14:53,773 INFO L231 Difference]: Finished difference. Result has 92 places, 80 transitions, 504 flow [2024-02-02 09:14:53,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=504, PETRI_PLACES=92, PETRI_TRANSITIONS=80} [2024-02-02 09:14:53,774 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 20 predicate places. [2024-02-02 09:14:53,774 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 80 transitions, 504 flow [2024-02-02 09:14:53,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:53,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:53,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:53,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-02-02 09:14:53,774 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:53,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:53,775 INFO L85 PathProgramCache]: Analyzing trace with hash -214383769, now seen corresponding path program 1 times [2024-02-02 09:14:53,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:53,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158144154] [2024-02-02 09:14:53,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:53,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:53,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:53,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:53,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:53,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158144154] [2024-02-02 09:14:53,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158144154] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:53,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:53,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:14:53,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001256200] [2024-02-02 09:14:53,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:53,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:14:53,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:53,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:14:53,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:14:53,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:53,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 80 transitions, 504 flow. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:53,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:53,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:53,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:54,367 INFO L124 PetriNetUnfolderBase]: 1498/2756 cut-off events. [2024-02-02 09:14:54,367 INFO L125 PetriNetUnfolderBase]: For 5271/5282 co-relation queries the response was YES. [2024-02-02 09:14:54,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8269 conditions, 2756 events. 1498/2756 cut-off events. For 5271/5282 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 17342 event pairs, 368 based on Foata normal form. 41/2599 useless extension candidates. Maximal degree in co-relation 8233. Up to 1402 conditions per place. [2024-02-02 09:14:54,388 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 89 selfloop transitions, 26 changer transitions 0/126 dead transitions. [2024-02-02 09:14:54,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 126 transitions, 890 flow [2024-02-02 09:14:54,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:14:54,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:14:54,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 199 transitions. [2024-02-02 09:14:54,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4877450980392157 [2024-02-02 09:14:54,390 INFO L175 Difference]: Start difference. First operand has 92 places, 80 transitions, 504 flow. Second operand 6 states and 199 transitions. [2024-02-02 09:14:54,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 126 transitions, 890 flow [2024-02-02 09:14:54,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 126 transitions, 873 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-02-02 09:14:54,402 INFO L231 Difference]: Finished difference. Result has 98 places, 82 transitions, 572 flow [2024-02-02 09:14:54,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=572, PETRI_PLACES=98, PETRI_TRANSITIONS=82} [2024-02-02 09:14:54,404 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 26 predicate places. [2024-02-02 09:14:54,404 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 82 transitions, 572 flow [2024-02-02 09:14:54,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:54,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:54,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:54,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-02-02 09:14:54,405 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:54,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:54,406 INFO L85 PathProgramCache]: Analyzing trace with hash -894908601, now seen corresponding path program 1 times [2024-02-02 09:14:54,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:54,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813265818] [2024-02-02 09:14:54,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:54,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:54,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:54,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:54,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:54,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813265818] [2024-02-02 09:14:54,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813265818] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:54,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:54,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-02 09:14:54,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746286728] [2024-02-02 09:14:54,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:54,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-02 09:14:54,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:54,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-02 09:14:54,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-02 09:14:54,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:14:54,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 82 transitions, 572 flow. Second operand has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:54,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:54,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:14:54,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:54,858 INFO L124 PetriNetUnfolderBase]: 1050/1996 cut-off events. [2024-02-02 09:14:54,858 INFO L125 PetriNetUnfolderBase]: For 5472/5482 co-relation queries the response was YES. [2024-02-02 09:14:54,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6349 conditions, 1996 events. 1050/1996 cut-off events. For 5472/5482 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 12708 event pairs, 403 based on Foata normal form. 18/1865 useless extension candidates. Maximal degree in co-relation 6310. Up to 1125 conditions per place. [2024-02-02 09:14:54,868 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 74 selfloop transitions, 23 changer transitions 0/116 dead transitions. [2024-02-02 09:14:54,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 116 transitions, 918 flow [2024-02-02 09:14:54,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:14:54,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:14:54,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 210 transitions. [2024-02-02 09:14:54,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6176470588235294 [2024-02-02 09:14:54,885 INFO L175 Difference]: Start difference. First operand has 98 places, 82 transitions, 572 flow. Second operand 5 states and 210 transitions. [2024-02-02 09:14:54,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 116 transitions, 918 flow [2024-02-02 09:14:54,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 116 transitions, 866 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-02-02 09:14:54,891 INFO L231 Difference]: Finished difference. Result has 99 places, 84 transitions, 602 flow [2024-02-02 09:14:54,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=602, PETRI_PLACES=99, PETRI_TRANSITIONS=84} [2024-02-02 09:14:54,892 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 27 predicate places. [2024-02-02 09:14:54,892 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 84 transitions, 602 flow [2024-02-02 09:14:54,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:54,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:54,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:54,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-02-02 09:14:54,892 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:54,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:54,893 INFO L85 PathProgramCache]: Analyzing trace with hash -176140477, now seen corresponding path program 2 times [2024-02-02 09:14:54,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:54,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759896859] [2024-02-02 09:14:54,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:54,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:54,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:54,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:54,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:54,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759896859] [2024-02-02 09:14:54,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759896859] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:54,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:54,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-02 09:14:54,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266836333] [2024-02-02 09:14:54,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:54,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-02 09:14:54,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:54,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-02 09:14:54,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-02 09:14:54,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:14:54,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 84 transitions, 602 flow. Second operand has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:54,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:54,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:14:54,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:55,247 INFO L124 PetriNetUnfolderBase]: 1022/1926 cut-off events. [2024-02-02 09:14:55,247 INFO L125 PetriNetUnfolderBase]: For 5618/5635 co-relation queries the response was YES. [2024-02-02 09:14:55,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6173 conditions, 1926 events. 1022/1926 cut-off events. For 5618/5635 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 12095 event pairs, 408 based on Foata normal form. 23/1794 useless extension candidates. Maximal degree in co-relation 6133. Up to 1115 conditions per place. [2024-02-02 09:14:55,256 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 71 selfloop transitions, 23 changer transitions 0/113 dead transitions. [2024-02-02 09:14:55,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 113 transitions, 900 flow [2024-02-02 09:14:55,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:14:55,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:14:55,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 207 transitions. [2024-02-02 09:14:55,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6088235294117647 [2024-02-02 09:14:55,265 INFO L175 Difference]: Start difference. First operand has 99 places, 84 transitions, 602 flow. Second operand 5 states and 207 transitions. [2024-02-02 09:14:55,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 113 transitions, 900 flow [2024-02-02 09:14:55,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 113 transitions, 871 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-02-02 09:14:55,274 INFO L231 Difference]: Finished difference. Result has 102 places, 84 transitions, 627 flow [2024-02-02 09:14:55,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=627, PETRI_PLACES=102, PETRI_TRANSITIONS=84} [2024-02-02 09:14:55,274 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 30 predicate places. [2024-02-02 09:14:55,274 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 84 transitions, 627 flow [2024-02-02 09:14:55,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:55,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:55,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:55,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-02-02 09:14:55,275 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:55,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:55,275 INFO L85 PathProgramCache]: Analyzing trace with hash -2109602502, now seen corresponding path program 1 times [2024-02-02 09:14:55,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:55,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842131461] [2024-02-02 09:14:55,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:55,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:55,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:55,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:55,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:55,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842131461] [2024-02-02 09:14:55,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842131461] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:55,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:55,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:14:55,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648754682] [2024-02-02 09:14:55,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:55,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:14:55,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:55,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:14:55,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:14:55,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:55,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 84 transitions, 627 flow. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:55,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:55,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:55,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:55,840 INFO L124 PetriNetUnfolderBase]: 1658/3039 cut-off events. [2024-02-02 09:14:55,840 INFO L125 PetriNetUnfolderBase]: For 8706/8717 co-relation queries the response was YES. [2024-02-02 09:14:55,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9626 conditions, 3039 events. 1658/3039 cut-off events. For 8706/8717 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 19259 event pairs, 528 based on Foata normal form. 32/2930 useless extension candidates. Maximal degree in co-relation 9585. Up to 1448 conditions per place. [2024-02-02 09:14:55,858 INFO L140 encePairwiseOnDemand]: 52/68 looper letters, 96 selfloop transitions, 39 changer transitions 0/146 dead transitions. [2024-02-02 09:14:55,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 146 transitions, 1182 flow [2024-02-02 09:14:55,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:14:55,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:14:55,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 211 transitions. [2024-02-02 09:14:55,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5171568627450981 [2024-02-02 09:14:55,859 INFO L175 Difference]: Start difference. First operand has 102 places, 84 transitions, 627 flow. Second operand 6 states and 211 transitions. [2024-02-02 09:14:55,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 146 transitions, 1182 flow [2024-02-02 09:14:55,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 146 transitions, 1058 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-02-02 09:14:55,872 INFO L231 Difference]: Finished difference. Result has 104 places, 99 transitions, 769 flow [2024-02-02 09:14:55,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=769, PETRI_PLACES=104, PETRI_TRANSITIONS=99} [2024-02-02 09:14:55,873 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 32 predicate places. [2024-02-02 09:14:55,873 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 99 transitions, 769 flow [2024-02-02 09:14:55,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:55,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:55,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:55,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-02-02 09:14:55,874 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:55,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:55,874 INFO L85 PathProgramCache]: Analyzing trace with hash -194248927, now seen corresponding path program 1 times [2024-02-02 09:14:55,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:55,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744557809] [2024-02-02 09:14:55,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:55,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:55,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:56,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:56,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:56,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744557809] [2024-02-02 09:14:56,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744557809] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:56,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:56,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:14:56,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214450484] [2024-02-02 09:14:56,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:56,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:14:56,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:56,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:14:56,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:14:56,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:56,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 99 transitions, 769 flow. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:56,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:56,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:56,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:56,472 INFO L124 PetriNetUnfolderBase]: 1648/3041 cut-off events. [2024-02-02 09:14:56,472 INFO L125 PetriNetUnfolderBase]: For 8003/8020 co-relation queries the response was YES. [2024-02-02 09:14:56,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10312 conditions, 3041 events. 1648/3041 cut-off events. For 8003/8020 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 19399 event pairs, 541 based on Foata normal form. 32/2932 useless extension candidates. Maximal degree in co-relation 10268. Up to 1451 conditions per place. [2024-02-02 09:14:56,490 INFO L140 encePairwiseOnDemand]: 52/68 looper letters, 98 selfloop transitions, 47 changer transitions 0/156 dead transitions. [2024-02-02 09:14:56,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 156 transitions, 1315 flow [2024-02-02 09:14:56,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:14:56,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:14:56,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 212 transitions. [2024-02-02 09:14:56,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5196078431372549 [2024-02-02 09:14:56,492 INFO L175 Difference]: Start difference. First operand has 104 places, 99 transitions, 769 flow. Second operand 6 states and 212 transitions. [2024-02-02 09:14:56,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 156 transitions, 1315 flow [2024-02-02 09:14:56,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 156 transitions, 1274 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-02-02 09:14:56,511 INFO L231 Difference]: Finished difference. Result has 108 places, 109 transitions, 945 flow [2024-02-02 09:14:56,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=731, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=945, PETRI_PLACES=108, PETRI_TRANSITIONS=109} [2024-02-02 09:14:56,511 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 36 predicate places. [2024-02-02 09:14:56,512 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 109 transitions, 945 flow [2024-02-02 09:14:56,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:56,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:56,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:56,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-02-02 09:14:56,512 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:56,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:56,513 INFO L85 PathProgramCache]: Analyzing trace with hash -194235397, now seen corresponding path program 1 times [2024-02-02 09:14:56,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:56,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079199783] [2024-02-02 09:14:56,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:56,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:56,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:56,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:56,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:56,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079199783] [2024-02-02 09:14:56,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079199783] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:56,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:56,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:14:56,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282371292] [2024-02-02 09:14:56,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:56,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:14:56,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:56,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:14:56,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:14:56,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:56,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 109 transitions, 945 flow. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:56,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:56,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:56,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:57,135 INFO L124 PetriNetUnfolderBase]: 1945/3488 cut-off events. [2024-02-02 09:14:57,135 INFO L125 PetriNetUnfolderBase]: For 12875/13030 co-relation queries the response was YES. [2024-02-02 09:14:57,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12818 conditions, 3488 events. 1945/3488 cut-off events. For 12875/13030 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 21366 event pairs, 497 based on Foata normal form. 91/3377 useless extension candidates. Maximal degree in co-relation 12773. Up to 1712 conditions per place. [2024-02-02 09:14:57,151 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 94 selfloop transitions, 39 changer transitions 0/152 dead transitions. [2024-02-02 09:14:57,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 152 transitions, 1390 flow [2024-02-02 09:14:57,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:14:57,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:14:57,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 198 transitions. [2024-02-02 09:14:57,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4852941176470588 [2024-02-02 09:14:57,153 INFO L175 Difference]: Start difference. First operand has 108 places, 109 transitions, 945 flow. Second operand 6 states and 198 transitions. [2024-02-02 09:14:57,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 152 transitions, 1390 flow [2024-02-02 09:14:57,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 152 transitions, 1308 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-02-02 09:14:57,171 INFO L231 Difference]: Finished difference. Result has 110 places, 109 transitions, 955 flow [2024-02-02 09:14:57,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=863, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=955, PETRI_PLACES=110, PETRI_TRANSITIONS=109} [2024-02-02 09:14:57,172 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 38 predicate places. [2024-02-02 09:14:57,172 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 109 transitions, 955 flow [2024-02-02 09:14:57,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:57,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:57,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:57,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-02-02 09:14:57,172 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:57,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:57,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1366125659, now seen corresponding path program 1 times [2024-02-02 09:14:57,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:57,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123915723] [2024-02-02 09:14:57,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:57,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:57,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:57,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:57,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:57,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123915723] [2024-02-02 09:14:57,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123915723] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:57,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:57,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:14:57,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456499078] [2024-02-02 09:14:57,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:57,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:14:57,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:57,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:14:57,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:14:57,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:57,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 109 transitions, 955 flow. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:57,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:57,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:57,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:57,690 INFO L124 PetriNetUnfolderBase]: 1588/2927 cut-off events. [2024-02-02 09:14:57,690 INFO L125 PetriNetUnfolderBase]: For 10048/10065 co-relation queries the response was YES. [2024-02-02 09:14:57,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10859 conditions, 2927 events. 1588/2927 cut-off events. For 10048/10065 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 18436 event pairs, 575 based on Foata normal form. 17/2803 useless extension candidates. Maximal degree in co-relation 10813. Up to 1448 conditions per place. [2024-02-02 09:14:57,710 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 93 selfloop transitions, 46 changer transitions 0/150 dead transitions. [2024-02-02 09:14:57,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 150 transitions, 1445 flow [2024-02-02 09:14:57,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:14:57,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:14:57,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 202 transitions. [2024-02-02 09:14:57,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4950980392156863 [2024-02-02 09:14:57,712 INFO L175 Difference]: Start difference. First operand has 110 places, 109 transitions, 955 flow. Second operand 6 states and 202 transitions. [2024-02-02 09:14:57,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 150 transitions, 1445 flow [2024-02-02 09:14:57,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 150 transitions, 1367 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-02-02 09:14:57,729 INFO L231 Difference]: Finished difference. Result has 111 places, 109 transitions, 979 flow [2024-02-02 09:14:57,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=877, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=979, PETRI_PLACES=111, PETRI_TRANSITIONS=109} [2024-02-02 09:14:57,730 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 39 predicate places. [2024-02-02 09:14:57,730 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 109 transitions, 979 flow [2024-02-02 09:14:57,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:57,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:57,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:57,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-02-02 09:14:57,731 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:57,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:57,731 INFO L85 PathProgramCache]: Analyzing trace with hash -176111557, now seen corresponding path program 2 times [2024-02-02 09:14:57,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:57,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643819420] [2024-02-02 09:14:57,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:57,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:57,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:57,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:57,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:57,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643819420] [2024-02-02 09:14:57,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643819420] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:57,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:57,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:14:57,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913365948] [2024-02-02 09:14:57,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:57,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:14:57,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:57,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:14:57,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:14:57,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:57,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 109 transitions, 979 flow. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:57,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:57,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:57,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:58,342 INFO L124 PetriNetUnfolderBase]: 2107/3776 cut-off events. [2024-02-02 09:14:58,342 INFO L125 PetriNetUnfolderBase]: For 15231/15404 co-relation queries the response was YES. [2024-02-02 09:14:58,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14448 conditions, 3776 events. 2107/3776 cut-off events. For 15231/15404 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 23548 event pairs, 564 based on Foata normal form. 115/3680 useless extension candidates. Maximal degree in co-relation 14401. Up to 1736 conditions per place. [2024-02-02 09:14:58,361 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 104 selfloop transitions, 38 changer transitions 0/161 dead transitions. [2024-02-02 09:14:58,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 161 transitions, 1586 flow [2024-02-02 09:14:58,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:14:58,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:14:58,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 195 transitions. [2024-02-02 09:14:58,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47794117647058826 [2024-02-02 09:14:58,362 INFO L175 Difference]: Start difference. First operand has 111 places, 109 transitions, 979 flow. Second operand 6 states and 195 transitions. [2024-02-02 09:14:58,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 161 transitions, 1586 flow [2024-02-02 09:14:58,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 161 transitions, 1508 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-02 09:14:58,387 INFO L231 Difference]: Finished difference. Result has 114 places, 118 transitions, 1123 flow [2024-02-02 09:14:58,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=912, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1123, PETRI_PLACES=114, PETRI_TRANSITIONS=118} [2024-02-02 09:14:58,387 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 42 predicate places. [2024-02-02 09:14:58,387 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 118 transitions, 1123 flow [2024-02-02 09:14:58,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:58,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:58,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:58,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-02-02 09:14:58,388 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:58,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:58,388 INFO L85 PathProgramCache]: Analyzing trace with hash -271023617, now seen corresponding path program 2 times [2024-02-02 09:14:58,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:58,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333508120] [2024-02-02 09:14:58,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:58,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:58,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:58,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:58,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:58,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333508120] [2024-02-02 09:14:58,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333508120] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:58,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:58,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:14:58,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408892999] [2024-02-02 09:14:58,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:58,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:14:58,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:58,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:14:58,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:14:58,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:58,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 118 transitions, 1123 flow. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:58,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:58,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:58,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:59,002 INFO L124 PetriNetUnfolderBase]: 1780/3272 cut-off events. [2024-02-02 09:14:59,002 INFO L125 PetriNetUnfolderBase]: For 13128/13145 co-relation queries the response was YES. [2024-02-02 09:14:59,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12950 conditions, 3272 events. 1780/3272 cut-off events. For 13128/13145 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 21088 event pairs, 520 based on Foata normal form. 32/3160 useless extension candidates. Maximal degree in co-relation 12901. Up to 1478 conditions per place. [2024-02-02 09:14:59,023 INFO L140 encePairwiseOnDemand]: 56/68 looper letters, 102 selfloop transitions, 49 changer transitions 0/162 dead transitions. [2024-02-02 09:14:59,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 162 transitions, 1714 flow [2024-02-02 09:14:59,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:14:59,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:14:59,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 195 transitions. [2024-02-02 09:14:59,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47794117647058826 [2024-02-02 09:14:59,024 INFO L175 Difference]: Start difference. First operand has 114 places, 118 transitions, 1123 flow. Second operand 6 states and 195 transitions. [2024-02-02 09:14:59,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 162 transitions, 1714 flow [2024-02-02 09:14:59,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 162 transitions, 1680 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-02-02 09:14:59,052 INFO L231 Difference]: Finished difference. Result has 119 places, 126 transitions, 1346 flow [2024-02-02 09:14:59,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1093, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1346, PETRI_PLACES=119, PETRI_TRANSITIONS=126} [2024-02-02 09:14:59,052 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 47 predicate places. [2024-02-02 09:14:59,053 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 126 transitions, 1346 flow [2024-02-02 09:14:59,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:59,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:59,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:59,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-02-02 09:14:59,053 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:59,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:59,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1145961259, now seen corresponding path program 2 times [2024-02-02 09:14:59,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:59,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021717649] [2024-02-02 09:14:59,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:59,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:59,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:59,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:59,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:59,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021717649] [2024-02-02 09:14:59,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021717649] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:59,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:59,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:14:59,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674297124] [2024-02-02 09:14:59,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:59,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:14:59,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:59,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:14:59,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:14:59,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:59,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 126 transitions, 1346 flow. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:59,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:59,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:59,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:14:59,706 INFO L124 PetriNetUnfolderBase]: 1666/3050 cut-off events. [2024-02-02 09:14:59,706 INFO L125 PetriNetUnfolderBase]: For 14999/15016 co-relation queries the response was YES. [2024-02-02 09:14:59,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12439 conditions, 3050 events. 1666/3050 cut-off events. For 14999/15016 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 19044 event pairs, 463 based on Foata normal form. 62/2968 useless extension candidates. Maximal degree in co-relation 12388. Up to 1460 conditions per place. [2024-02-02 09:14:59,723 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 97 selfloop transitions, 51 changer transitions 0/159 dead transitions. [2024-02-02 09:14:59,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 159 transitions, 1807 flow [2024-02-02 09:14:59,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:14:59,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:14:59,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 191 transitions. [2024-02-02 09:14:59,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681372549019608 [2024-02-02 09:14:59,724 INFO L175 Difference]: Start difference. First operand has 119 places, 126 transitions, 1346 flow. Second operand 6 states and 191 transitions. [2024-02-02 09:14:59,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 159 transitions, 1807 flow [2024-02-02 09:14:59,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 159 transitions, 1777 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:14:59,751 INFO L231 Difference]: Finished difference. Result has 123 places, 126 transitions, 1440 flow [2024-02-02 09:14:59,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1316, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1440, PETRI_PLACES=123, PETRI_TRANSITIONS=126} [2024-02-02 09:14:59,752 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 51 predicate places. [2024-02-02 09:14:59,752 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 126 transitions, 1440 flow [2024-02-02 09:14:59,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:59,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:14:59,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:14:59,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-02-02 09:14:59,753 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:14:59,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:14:59,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1145962069, now seen corresponding path program 1 times [2024-02-02 09:14:59,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:14:59,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765474587] [2024-02-02 09:14:59,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:14:59,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:14:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:14:59,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:14:59,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:14:59,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765474587] [2024-02-02 09:14:59,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765474587] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:14:59,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:14:59,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:14:59,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751746970] [2024-02-02 09:14:59,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:14:59,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:14:59,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:14:59,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:14:59,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:14:59,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:14:59,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 126 transitions, 1440 flow. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:14:59,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:14:59,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:14:59,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:00,459 INFO L124 PetriNetUnfolderBase]: 1889/3411 cut-off events. [2024-02-02 09:15:00,460 INFO L125 PetriNetUnfolderBase]: For 23690/23829 co-relation queries the response was YES. [2024-02-02 09:15:00,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14581 conditions, 3411 events. 1889/3411 cut-off events. For 23690/23829 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 20771 event pairs, 565 based on Foata normal form. 82/3292 useless extension candidates. Maximal degree in co-relation 14529. Up to 1715 conditions per place. [2024-02-02 09:15:00,486 INFO L140 encePairwiseOnDemand]: 56/68 looper letters, 99 selfloop transitions, 45 changer transitions 0/163 dead transitions. [2024-02-02 09:15:00,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 163 transitions, 1884 flow [2024-02-02 09:15:00,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:15:00,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:15:00,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 193 transitions. [2024-02-02 09:15:00,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4730392156862745 [2024-02-02 09:15:00,489 INFO L175 Difference]: Start difference. First operand has 123 places, 126 transitions, 1440 flow. Second operand 6 states and 193 transitions. [2024-02-02 09:15:00,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 163 transitions, 1884 flow [2024-02-02 09:15:00,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 163 transitions, 1780 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-02-02 09:15:00,547 INFO L231 Difference]: Finished difference. Result has 124 places, 126 transitions, 1443 flow [2024-02-02 09:15:00,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1336, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1443, PETRI_PLACES=124, PETRI_TRANSITIONS=126} [2024-02-02 09:15:00,548 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 52 predicate places. [2024-02-02 09:15:00,548 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 126 transitions, 1443 flow [2024-02-02 09:15:00,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:00,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:00,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:00,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-02-02 09:15:00,549 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:00,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:00,549 INFO L85 PathProgramCache]: Analyzing trace with hash -248026997, now seen corresponding path program 3 times [2024-02-02 09:15:00,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:00,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416573851] [2024-02-02 09:15:00,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:00,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:00,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:00,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:00,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:00,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416573851] [2024-02-02 09:15:00,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416573851] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:00,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:00,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:15:00,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553551435] [2024-02-02 09:15:00,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:00,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:15:00,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:00,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:15:00,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:15:00,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:00,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 126 transitions, 1443 flow. Second operand has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:00,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:00,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:00,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:01,282 INFO L124 PetriNetUnfolderBase]: 1971/3518 cut-off events. [2024-02-02 09:15:01,283 INFO L125 PetriNetUnfolderBase]: For 26523/26690 co-relation queries the response was YES. [2024-02-02 09:15:01,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15525 conditions, 3518 events. 1971/3518 cut-off events. For 26523/26690 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 21392 event pairs, 727 based on Foata normal form. 101/3422 useless extension candidates. Maximal degree in co-relation 15472. Up to 1755 conditions per place. [2024-02-02 09:15:01,316 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 90 selfloop transitions, 61 changer transitions 0/170 dead transitions. [2024-02-02 09:15:01,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 170 transitions, 2055 flow [2024-02-02 09:15:01,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:15:01,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:15:01,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 191 transitions. [2024-02-02 09:15:01,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681372549019608 [2024-02-02 09:15:01,318 INFO L175 Difference]: Start difference. First operand has 124 places, 126 transitions, 1443 flow. Second operand 6 states and 191 transitions. [2024-02-02 09:15:01,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 170 transitions, 2055 flow [2024-02-02 09:15:01,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 170 transitions, 1933 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-02-02 09:15:01,363 INFO L231 Difference]: Finished difference. Result has 126 places, 137 transitions, 1621 flow [2024-02-02 09:15:01,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1341, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1621, PETRI_PLACES=126, PETRI_TRANSITIONS=137} [2024-02-02 09:15:01,363 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 54 predicate places. [2024-02-02 09:15:01,363 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 137 transitions, 1621 flow [2024-02-02 09:15:01,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:01,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:01,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:01,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-02-02 09:15:01,364 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:01,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:01,364 INFO L85 PathProgramCache]: Analyzing trace with hash -248003163, now seen corresponding path program 2 times [2024-02-02 09:15:01,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:01,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191811714] [2024-02-02 09:15:01,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:01,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:01,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:01,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:01,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:01,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191811714] [2024-02-02 09:15:01,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191811714] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:01,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:01,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:15:01,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62277769] [2024-02-02 09:15:01,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:01,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:15:01,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:01,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:15:01,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:15:01,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:01,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 137 transitions, 1621 flow. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:01,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:01,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:01,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:02,196 INFO L124 PetriNetUnfolderBase]: 2017/3612 cut-off events. [2024-02-02 09:15:02,196 INFO L125 PetriNetUnfolderBase]: For 27530/27720 co-relation queries the response was YES. [2024-02-02 09:15:02,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16701 conditions, 3612 events. 2017/3612 cut-off events. For 27530/27720 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 22191 event pairs, 721 based on Foata normal form. 107/3522 useless extension candidates. Maximal degree in co-relation 16646. Up to 1773 conditions per place. [2024-02-02 09:15:02,233 INFO L140 encePairwiseOnDemand]: 54/68 looper letters, 90 selfloop transitions, 67 changer transitions 0/176 dead transitions. [2024-02-02 09:15:02,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 176 transitions, 2203 flow [2024-02-02 09:15:02,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:15:02,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:15:02,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 194 transitions. [2024-02-02 09:15:02,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47549019607843135 [2024-02-02 09:15:02,234 INFO L175 Difference]: Start difference. First operand has 126 places, 137 transitions, 1621 flow. Second operand 6 states and 194 transitions. [2024-02-02 09:15:02,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 176 transitions, 2203 flow [2024-02-02 09:15:02,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 176 transitions, 2116 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-02-02 09:15:02,305 INFO L231 Difference]: Finished difference. Result has 130 places, 144 transitions, 1833 flow [2024-02-02 09:15:02,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1539, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1833, PETRI_PLACES=130, PETRI_TRANSITIONS=144} [2024-02-02 09:15:02,305 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 58 predicate places. [2024-02-02 09:15:02,306 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 144 transitions, 1833 flow [2024-02-02 09:15:02,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:02,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:02,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:02,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-02-02 09:15:02,306 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:02,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:02,307 INFO L85 PathProgramCache]: Analyzing trace with hash -247196853, now seen corresponding path program 3 times [2024-02-02 09:15:02,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:02,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497663329] [2024-02-02 09:15:02,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:02,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:02,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:02,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:02,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:02,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497663329] [2024-02-02 09:15:02,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497663329] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:02,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:02,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:15:02,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777817032] [2024-02-02 09:15:02,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:02,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:15:02,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:02,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:15:02,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:15:02,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:02,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 144 transitions, 1833 flow. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:02,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:02,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:02,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:03,087 INFO L124 PetriNetUnfolderBase]: 2053/3666 cut-off events. [2024-02-02 09:15:03,087 INFO L125 PetriNetUnfolderBase]: For 30067/30263 co-relation queries the response was YES. [2024-02-02 09:15:03,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17535 conditions, 3666 events. 2053/3666 cut-off events. For 30067/30263 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 22577 event pairs, 721 based on Foata normal form. 95/3561 useless extension candidates. Maximal degree in co-relation 17478. Up to 1791 conditions per place. [2024-02-02 09:15:03,108 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 90 selfloop transitions, 78 changer transitions 0/187 dead transitions. [2024-02-02 09:15:03,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 187 transitions, 2432 flow [2024-02-02 09:15:03,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:15:03,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:15:03,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 193 transitions. [2024-02-02 09:15:03,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4730392156862745 [2024-02-02 09:15:03,110 INFO L175 Difference]: Start difference. First operand has 130 places, 144 transitions, 1833 flow. Second operand 6 states and 193 transitions. [2024-02-02 09:15:03,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 187 transitions, 2432 flow [2024-02-02 09:15:03,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 187 transitions, 2334 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-02 09:15:03,162 INFO L231 Difference]: Finished difference. Result has 134 places, 156 transitions, 2071 flow [2024-02-02 09:15:03,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1744, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2071, PETRI_PLACES=134, PETRI_TRANSITIONS=156} [2024-02-02 09:15:03,163 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 62 predicate places. [2024-02-02 09:15:03,163 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 156 transitions, 2071 flow [2024-02-02 09:15:03,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:03,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:03,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:03,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-02-02 09:15:03,163 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:03,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:03,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1276402348, now seen corresponding path program 1 times [2024-02-02 09:15:03,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:03,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536441292] [2024-02-02 09:15:03,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:03,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:03,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:03,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:03,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536441292] [2024-02-02 09:15:03,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536441292] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:03,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:03,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:15:03,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296814755] [2024-02-02 09:15:03,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:03,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-02 09:15:03,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:03,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-02 09:15:03,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-02 09:15:03,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:15:03,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 156 transitions, 2071 flow. Second operand has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:03,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:03,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:15:03,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:03,786 INFO L124 PetriNetUnfolderBase]: 1689/3220 cut-off events. [2024-02-02 09:15:03,787 INFO L125 PetriNetUnfolderBase]: For 32174/32318 co-relation queries the response was YES. [2024-02-02 09:15:03,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15936 conditions, 3220 events. 1689/3220 cut-off events. For 32174/32318 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 21629 event pairs, 385 based on Foata normal form. 92/3097 useless extension candidates. Maximal degree in co-relation 15877. Up to 1493 conditions per place. [2024-02-02 09:15:03,814 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 207 selfloop transitions, 58 changer transitions 0/300 dead transitions. [2024-02-02 09:15:03,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 300 transitions, 4519 flow [2024-02-02 09:15:03,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:15:03,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:15:03,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 254 transitions. [2024-02-02 09:15:03,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6225490196078431 [2024-02-02 09:15:03,815 INFO L175 Difference]: Start difference. First operand has 134 places, 156 transitions, 2071 flow. Second operand 6 states and 254 transitions. [2024-02-02 09:15:03,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 300 transitions, 4519 flow [2024-02-02 09:15:03,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 300 transitions, 4234 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-02-02 09:15:03,874 INFO L231 Difference]: Finished difference. Result has 138 places, 212 transitions, 3163 flow [2024-02-02 09:15:03,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1925, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3163, PETRI_PLACES=138, PETRI_TRANSITIONS=212} [2024-02-02 09:15:03,875 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 66 predicate places. [2024-02-02 09:15:03,875 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 212 transitions, 3163 flow [2024-02-02 09:15:03,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:03,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:03,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:03,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-02-02 09:15:03,876 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:03,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:03,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1501317584, now seen corresponding path program 1 times [2024-02-02 09:15:03,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:03,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811052408] [2024-02-02 09:15:03,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:03,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:03,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:03,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:03,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:03,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811052408] [2024-02-02 09:15:03,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811052408] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:03,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:03,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:15:03,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270806561] [2024-02-02 09:15:03,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:03,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-02 09:15:03,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:03,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-02 09:15:03,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-02 09:15:03,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:15:03,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 212 transitions, 3163 flow. Second operand has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:03,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:03,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:15:03,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:04,531 INFO L124 PetriNetUnfolderBase]: 1763/3342 cut-off events. [2024-02-02 09:15:04,531 INFO L125 PetriNetUnfolderBase]: For 35204/35376 co-relation queries the response was YES. [2024-02-02 09:15:04,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17078 conditions, 3342 events. 1763/3342 cut-off events. For 35204/35376 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 22701 event pairs, 503 based on Foata normal form. 96/3186 useless extension candidates. Maximal degree in co-relation 17016. Up to 1500 conditions per place. [2024-02-02 09:15:04,560 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 202 selfloop transitions, 62 changer transitions 0/299 dead transitions. [2024-02-02 09:15:04,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 299 transitions, 4589 flow [2024-02-02 09:15:04,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:15:04,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:15:04,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 248 transitions. [2024-02-02 09:15:04,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6078431372549019 [2024-02-02 09:15:04,562 INFO L175 Difference]: Start difference. First operand has 138 places, 212 transitions, 3163 flow. Second operand 6 states and 248 transitions. [2024-02-02 09:15:04,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 299 transitions, 4589 flow [2024-02-02 09:15:04,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 299 transitions, 4583 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-02-02 09:15:04,637 INFO L231 Difference]: Finished difference. Result has 147 places, 243 transitions, 3846 flow [2024-02-02 09:15:04,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=3157, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3846, PETRI_PLACES=147, PETRI_TRANSITIONS=243} [2024-02-02 09:15:04,638 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 75 predicate places. [2024-02-02 09:15:04,638 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 243 transitions, 3846 flow [2024-02-02 09:15:04,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:04,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:04,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:04,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-02-02 09:15:04,638 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:04,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:04,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1222187459, now seen corresponding path program 1 times [2024-02-02 09:15:04,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:04,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490024647] [2024-02-02 09:15:04,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:04,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:04,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:04,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:04,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:04,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490024647] [2024-02-02 09:15:04,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490024647] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:04,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:04,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-02 09:15:04,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751785295] [2024-02-02 09:15:04,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:04,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-02 09:15:04,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:04,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-02 09:15:04,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-02 09:15:04,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:15:04,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 243 transitions, 3846 flow. Second operand has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:04,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:04,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:15:04,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:05,306 INFO L124 PetriNetUnfolderBase]: 1788/3392 cut-off events. [2024-02-02 09:15:05,306 INFO L125 PetriNetUnfolderBase]: For 42655/42847 co-relation queries the response was YES. [2024-02-02 09:15:05,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18666 conditions, 3392 events. 1788/3392 cut-off events. For 42655/42847 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 23237 event pairs, 561 based on Foata normal form. 74/3240 useless extension candidates. Maximal degree in co-relation 18598. Up to 1831 conditions per place. [2024-02-02 09:15:05,335 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 125 selfloop transitions, 113 changer transitions 0/273 dead transitions. [2024-02-02 09:15:05,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 273 transitions, 4540 flow [2024-02-02 09:15:05,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:15:05,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:15:05,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 201 transitions. [2024-02-02 09:15:05,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5911764705882353 [2024-02-02 09:15:05,336 INFO L175 Difference]: Start difference. First operand has 147 places, 243 transitions, 3846 flow. Second operand 5 states and 201 transitions. [2024-02-02 09:15:05,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 273 transitions, 4540 flow [2024-02-02 09:15:05,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 273 transitions, 4513 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-02-02 09:15:05,423 INFO L231 Difference]: Finished difference. Result has 151 places, 245 transitions, 4083 flow [2024-02-02 09:15:05,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=3825, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4083, PETRI_PLACES=151, PETRI_TRANSITIONS=245} [2024-02-02 09:15:05,424 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 79 predicate places. [2024-02-02 09:15:05,424 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 245 transitions, 4083 flow [2024-02-02 09:15:05,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:05,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:05,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:05,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-02-02 09:15:05,425 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:05,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:05,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1699906627, now seen corresponding path program 2 times [2024-02-02 09:15:05,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:05,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249542465] [2024-02-02 09:15:05,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:05,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:05,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:05,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:05,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:05,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249542465] [2024-02-02 09:15:05,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249542465] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:05,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:05,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-02 09:15:05,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293822070] [2024-02-02 09:15:05,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:05,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-02 09:15:05,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:05,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-02 09:15:05,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-02 09:15:05,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:15:05,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 245 transitions, 4083 flow. Second operand has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:05,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:05,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:15:05,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:06,015 INFO L124 PetriNetUnfolderBase]: 1739/3295 cut-off events. [2024-02-02 09:15:06,016 INFO L125 PetriNetUnfolderBase]: For 46578/46772 co-relation queries the response was YES. [2024-02-02 09:15:06,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18505 conditions, 3295 events. 1739/3295 cut-off events. For 46578/46772 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 22445 event pairs, 555 based on Foata normal form. 71/3115 useless extension candidates. Maximal degree in co-relation 18435. Up to 1797 conditions per place. [2024-02-02 09:15:06,043 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 122 selfloop transitions, 113 changer transitions 0/270 dead transitions. [2024-02-02 09:15:06,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 270 transitions, 4723 flow [2024-02-02 09:15:06,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:15:06,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:15:06,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 198 transitions. [2024-02-02 09:15:06,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5823529411764706 [2024-02-02 09:15:06,045 INFO L175 Difference]: Start difference. First operand has 151 places, 245 transitions, 4083 flow. Second operand 5 states and 198 transitions. [2024-02-02 09:15:06,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 270 transitions, 4723 flow [2024-02-02 09:15:06,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 270 transitions, 4589 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:15:06,140 INFO L231 Difference]: Finished difference. Result has 154 places, 245 transitions, 4191 flow [2024-02-02 09:15:06,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=3949, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4191, PETRI_PLACES=154, PETRI_TRANSITIONS=245} [2024-02-02 09:15:06,141 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 82 predicate places. [2024-02-02 09:15:06,141 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 245 transitions, 4191 flow [2024-02-02 09:15:06,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.833333333333332) internal successors, (167), 6 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:06,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:06,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:06,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-02-02 09:15:06,142 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:06,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:06,142 INFO L85 PathProgramCache]: Analyzing trace with hash -259790692, now seen corresponding path program 1 times [2024-02-02 09:15:06,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:06,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510154200] [2024-02-02 09:15:06,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:06,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:06,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:06,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:06,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:06,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510154200] [2024-02-02 09:15:06,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510154200] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:06,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:06,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:15:06,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638005909] [2024-02-02 09:15:06,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:06,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:15:06,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:06,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:15:06,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:15:06,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:06,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 245 transitions, 4191 flow. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:06,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:06,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:06,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:07,074 INFO L124 PetriNetUnfolderBase]: 2372/4299 cut-off events. [2024-02-02 09:15:07,074 INFO L125 PetriNetUnfolderBase]: For 51167/51361 co-relation queries the response was YES. [2024-02-02 09:15:07,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23377 conditions, 4299 events. 2372/4299 cut-off events. For 51167/51361 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 28296 event pairs, 564 based on Foata normal form. 82/4167 useless extension candidates. Maximal degree in co-relation 23306. Up to 1869 conditions per place. [2024-02-02 09:15:07,111 INFO L140 encePairwiseOnDemand]: 50/68 looper letters, 254 selfloop transitions, 81 changer transitions 0/354 dead transitions. [2024-02-02 09:15:07,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 354 transitions, 5812 flow [2024-02-02 09:15:07,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:15:07,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:15:07,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 250 transitions. [2024-02-02 09:15:07,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5252100840336135 [2024-02-02 09:15:07,114 INFO L175 Difference]: Start difference. First operand has 154 places, 245 transitions, 4191 flow. Second operand 7 states and 250 transitions. [2024-02-02 09:15:07,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 354 transitions, 5812 flow [2024-02-02 09:15:07,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 354 transitions, 5345 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-02-02 09:15:07,252 INFO L231 Difference]: Finished difference. Result has 157 places, 269 transitions, 4238 flow [2024-02-02 09:15:07,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=3759, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4238, PETRI_PLACES=157, PETRI_TRANSITIONS=269} [2024-02-02 09:15:07,252 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 85 predicate places. [2024-02-02 09:15:07,252 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 269 transitions, 4238 flow [2024-02-02 09:15:07,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:07,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:07,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:07,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-02-02 09:15:07,253 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:07,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:07,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1112962458, now seen corresponding path program 2 times [2024-02-02 09:15:07,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:07,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949316805] [2024-02-02 09:15:07,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:07,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:07,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:07,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:07,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:07,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949316805] [2024-02-02 09:15:07,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949316805] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:07,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:07,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:15:07,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560928935] [2024-02-02 09:15:07,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:07,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:15:07,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:07,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:15:07,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:15:07,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:07,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 269 transitions, 4238 flow. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:07,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:07,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:07,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:08,380 INFO L124 PetriNetUnfolderBase]: 2362/4285 cut-off events. [2024-02-02 09:15:08,380 INFO L125 PetriNetUnfolderBase]: For 48651/48853 co-relation queries the response was YES. [2024-02-02 09:15:08,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24267 conditions, 4285 events. 2362/4285 cut-off events. For 48651/48853 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 28216 event pairs, 591 based on Foata normal form. 82/4153 useless extension candidates. Maximal degree in co-relation 24193. Up to 1867 conditions per place. [2024-02-02 09:15:08,421 INFO L140 encePairwiseOnDemand]: 50/68 looper letters, 253 selfloop transitions, 81 changer transitions 0/353 dead transitions. [2024-02-02 09:15:08,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 353 transitions, 5630 flow [2024-02-02 09:15:08,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:15:08,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:15:08,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 247 transitions. [2024-02-02 09:15:08,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5189075630252101 [2024-02-02 09:15:08,423 INFO L175 Difference]: Start difference. First operand has 157 places, 269 transitions, 4238 flow. Second operand 7 states and 247 transitions. [2024-02-02 09:15:08,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 353 transitions, 5630 flow [2024-02-02 09:15:08,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 353 transitions, 5580 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-02-02 09:15:08,600 INFO L231 Difference]: Finished difference. Result has 163 places, 274 transitions, 4452 flow [2024-02-02 09:15:08,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=4189, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4452, PETRI_PLACES=163, PETRI_TRANSITIONS=274} [2024-02-02 09:15:08,601 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 91 predicate places. [2024-02-02 09:15:08,601 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 274 transitions, 4452 flow [2024-02-02 09:15:08,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:08,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:08,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:08,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-02-02 09:15:08,602 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:08,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:08,602 INFO L85 PathProgramCache]: Analyzing trace with hash 23330454, now seen corresponding path program 3 times [2024-02-02 09:15:08,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:08,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998840431] [2024-02-02 09:15:08,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:08,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:08,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:08,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:08,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:08,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998840431] [2024-02-02 09:15:08,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998840431] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:08,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:08,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:15:08,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129220549] [2024-02-02 09:15:08,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:08,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:15:08,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:08,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:15:08,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:15:08,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:08,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 274 transitions, 4452 flow. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:08,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:08,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:08,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:09,689 INFO L124 PetriNetUnfolderBase]: 2510/4579 cut-off events. [2024-02-02 09:15:09,689 INFO L125 PetriNetUnfolderBase]: For 57330/57541 co-relation queries the response was YES. [2024-02-02 09:15:09,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26786 conditions, 4579 events. 2510/4579 cut-off events. For 57330/57541 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 30755 event pairs, 729 based on Foata normal form. 82/4453 useless extension candidates. Maximal degree in co-relation 26710. Up to 1875 conditions per place. [2024-02-02 09:15:09,728 INFO L140 encePairwiseOnDemand]: 50/68 looper letters, 267 selfloop transitions, 93 changer transitions 0/379 dead transitions. [2024-02-02 09:15:09,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 379 transitions, 6248 flow [2024-02-02 09:15:09,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:15:09,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:15:09,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 247 transitions. [2024-02-02 09:15:09,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5189075630252101 [2024-02-02 09:15:09,730 INFO L175 Difference]: Start difference. First operand has 163 places, 274 transitions, 4452 flow. Second operand 7 states and 247 transitions. [2024-02-02 09:15:09,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 379 transitions, 6248 flow [2024-02-02 09:15:09,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 379 transitions, 6006 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-02-02 09:15:09,915 INFO L231 Difference]: Finished difference. Result has 168 places, 303 transitions, 4933 flow [2024-02-02 09:15:09,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=4270, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4933, PETRI_PLACES=168, PETRI_TRANSITIONS=303} [2024-02-02 09:15:09,916 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 96 predicate places. [2024-02-02 09:15:09,916 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 303 transitions, 4933 flow [2024-02-02 09:15:09,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:09,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:09,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:09,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-02-02 09:15:09,917 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:09,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:09,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1129689369, now seen corresponding path program 1 times [2024-02-02 09:15:09,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:09,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827736889] [2024-02-02 09:15:09,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:09,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:09,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:10,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:10,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:10,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827736889] [2024-02-02 09:15:10,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827736889] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:10,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:10,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:15:10,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101839765] [2024-02-02 09:15:10,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:10,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:15:10,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:10,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:15:10,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:15:10,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:10,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 303 transitions, 4933 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:10,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:10,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:10,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:11,085 INFO L124 PetriNetUnfolderBase]: 2662/4752 cut-off events. [2024-02-02 09:15:11,085 INFO L125 PetriNetUnfolderBase]: For 66353/66747 co-relation queries the response was YES. [2024-02-02 09:15:11,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29266 conditions, 4752 events. 2662/4752 cut-off events. For 66353/66747 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 31096 event pairs, 644 based on Foata normal form. 103/4603 useless extension candidates. Maximal degree in co-relation 29186. Up to 2714 conditions per place. [2024-02-02 09:15:11,147 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 192 selfloop transitions, 118 changer transitions 0/346 dead transitions. [2024-02-02 09:15:11,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 346 transitions, 5893 flow [2024-02-02 09:15:11,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:15:11,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:15:11,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2024-02-02 09:15:11,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-02-02 09:15:11,148 INFO L175 Difference]: Start difference. First operand has 168 places, 303 transitions, 4933 flow. Second operand 6 states and 187 transitions. [2024-02-02 09:15:11,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 346 transitions, 5893 flow [2024-02-02 09:15:11,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 346 transitions, 5818 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:15:11,453 INFO L231 Difference]: Finished difference. Result has 172 places, 303 transitions, 5132 flow [2024-02-02 09:15:11,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=4878, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5132, PETRI_PLACES=172, PETRI_TRANSITIONS=303} [2024-02-02 09:15:11,454 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 100 predicate places. [2024-02-02 09:15:11,454 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 303 transitions, 5132 flow [2024-02-02 09:15:11,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:11,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:11,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:11,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-02-02 09:15:11,455 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:11,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:11,455 INFO L85 PathProgramCache]: Analyzing trace with hash 349647937, now seen corresponding path program 2 times [2024-02-02 09:15:11,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:11,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918183748] [2024-02-02 09:15:11,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:11,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:11,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:11,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:11,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:11,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918183748] [2024-02-02 09:15:11,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918183748] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:11,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:11,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:15:11,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277377967] [2024-02-02 09:15:11,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:11,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:15:11,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:11,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:15:11,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:15:11,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:11,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 303 transitions, 5132 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:11,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:11,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:11,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:12,517 INFO L124 PetriNetUnfolderBase]: 2586/4652 cut-off events. [2024-02-02 09:15:12,517 INFO L125 PetriNetUnfolderBase]: For 69463/69833 co-relation queries the response was YES. [2024-02-02 09:15:12,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28609 conditions, 4652 events. 2586/4652 cut-off events. For 69463/69833 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 30494 event pairs, 632 based on Foata normal form. 97/4512 useless extension candidates. Maximal degree in co-relation 28528. Up to 2686 conditions per place. [2024-02-02 09:15:12,566 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 194 selfloop transitions, 114 changer transitions 0/344 dead transitions. [2024-02-02 09:15:12,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 344 transitions, 6057 flow [2024-02-02 09:15:12,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:15:12,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:15:12,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 184 transitions. [2024-02-02 09:15:12,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45098039215686275 [2024-02-02 09:15:12,568 INFO L175 Difference]: Start difference. First operand has 172 places, 303 transitions, 5132 flow. Second operand 6 states and 184 transitions. [2024-02-02 09:15:12,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 344 transitions, 6057 flow [2024-02-02 09:15:12,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 344 transitions, 5821 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-02-02 09:15:12,784 INFO L231 Difference]: Finished difference. Result has 173 places, 303 transitions, 5142 flow [2024-02-02 09:15:12,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=4896, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5142, PETRI_PLACES=173, PETRI_TRANSITIONS=303} [2024-02-02 09:15:12,785 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 101 predicate places. [2024-02-02 09:15:12,785 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 303 transitions, 5142 flow [2024-02-02 09:15:12,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:12,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:12,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:12,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-02-02 09:15:12,786 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:12,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:12,786 INFO L85 PathProgramCache]: Analyzing trace with hash 289961193, now seen corresponding path program 1 times [2024-02-02 09:15:12,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:12,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916291507] [2024-02-02 09:15:12,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:12,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:12,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:12,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:12,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:12,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916291507] [2024-02-02 09:15:12,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916291507] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:12,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:12,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:15:12,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202287740] [2024-02-02 09:15:12,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:12,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:15:12,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:12,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:15:12,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:15:12,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:12,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 303 transitions, 5142 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:12,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:12,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:12,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:13,733 INFO L124 PetriNetUnfolderBase]: 2329/4263 cut-off events. [2024-02-02 09:15:13,733 INFO L125 PetriNetUnfolderBase]: For 62150/62358 co-relation queries the response was YES. [2024-02-02 09:15:13,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26282 conditions, 4263 events. 2329/4263 cut-off events. For 62150/62358 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 28403 event pairs, 591 based on Foata normal form. 78/4142 useless extension candidates. Maximal degree in co-relation 26200. Up to 2476 conditions per place. [2024-02-02 09:15:13,769 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 205 selfloop transitions, 116 changer transitions 0/340 dead transitions. [2024-02-02 09:15:13,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 340 transitions, 6078 flow [2024-02-02 09:15:13,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:15:13,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:15:13,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 180 transitions. [2024-02-02 09:15:13,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4411764705882353 [2024-02-02 09:15:13,770 INFO L175 Difference]: Start difference. First operand has 173 places, 303 transitions, 5142 flow. Second operand 6 states and 180 transitions. [2024-02-02 09:15:13,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 340 transitions, 6078 flow [2024-02-02 09:15:13,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 340 transitions, 5925 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-02 09:15:13,959 INFO L231 Difference]: Finished difference. Result has 175 places, 303 transitions, 5239 flow [2024-02-02 09:15:13,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=4989, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5239, PETRI_PLACES=175, PETRI_TRANSITIONS=303} [2024-02-02 09:15:13,960 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 103 predicate places. [2024-02-02 09:15:13,960 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 303 transitions, 5239 flow [2024-02-02 09:15:13,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:13,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:13,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:13,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-02-02 09:15:13,961 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:13,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:13,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1699849873, now seen corresponding path program 2 times [2024-02-02 09:15:13,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:13,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222134168] [2024-02-02 09:15:13,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:13,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:13,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:14,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:14,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:14,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222134168] [2024-02-02 09:15:14,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222134168] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:14,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:14,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:15:14,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074953603] [2024-02-02 09:15:14,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:14,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:15:14,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:14,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:15:14,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:15:14,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:14,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 303 transitions, 5239 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:14,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:14,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:14,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:14,842 INFO L124 PetriNetUnfolderBase]: 2309/4231 cut-off events. [2024-02-02 09:15:14,842 INFO L125 PetriNetUnfolderBase]: For 65357/65559 co-relation queries the response was YES. [2024-02-02 09:15:14,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26192 conditions, 4231 events. 2309/4231 cut-off events. For 65357/65559 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 28146 event pairs, 593 based on Foata normal form. 78/4110 useless extension candidates. Maximal degree in co-relation 26109. Up to 2470 conditions per place. [2024-02-02 09:15:14,880 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 197 selfloop transitions, 120 changer transitions 0/336 dead transitions. [2024-02-02 09:15:14,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 336 transitions, 6114 flow [2024-02-02 09:15:14,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:15:14,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:15:14,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 177 transitions. [2024-02-02 09:15:14,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4338235294117647 [2024-02-02 09:15:14,881 INFO L175 Difference]: Start difference. First operand has 175 places, 303 transitions, 5239 flow. Second operand 6 states and 177 transitions. [2024-02-02 09:15:14,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 336 transitions, 6114 flow [2024-02-02 09:15:15,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 336 transitions, 5959 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-02 09:15:15,086 INFO L231 Difference]: Finished difference. Result has 177 places, 303 transitions, 5342 flow [2024-02-02 09:15:15,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=5084, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5342, PETRI_PLACES=177, PETRI_TRANSITIONS=303} [2024-02-02 09:15:15,087 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 105 predicate places. [2024-02-02 09:15:15,087 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 303 transitions, 5342 flow [2024-02-02 09:15:15,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:15,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:15,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:15,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-02-02 09:15:15,088 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:15,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:15,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1204402148, now seen corresponding path program 4 times [2024-02-02 09:15:15,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:15,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028066161] [2024-02-02 09:15:15,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:15,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:15,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:15,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:15,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028066161] [2024-02-02 09:15:15,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028066161] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:15,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:15,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:15:15,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277039361] [2024-02-02 09:15:15,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:15,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:15:15,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:15,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:15:15,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:15:15,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:15,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 303 transitions, 5342 flow. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:15,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:15,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:15,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:16,041 INFO L124 PetriNetUnfolderBase]: 2333/4270 cut-off events. [2024-02-02 09:15:16,042 INFO L125 PetriNetUnfolderBase]: For 71461/71676 co-relation queries the response was YES. [2024-02-02 09:15:16,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26536 conditions, 4270 events. 2333/4270 cut-off events. For 71461/71676 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 28524 event pairs, 620 based on Foata normal form. 99/4178 useless extension candidates. Maximal degree in co-relation 26452. Up to 1731 conditions per place. [2024-02-02 09:15:16,085 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 280 selfloop transitions, 85 changer transitions 0/384 dead transitions. [2024-02-02 09:15:16,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 384 transitions, 6952 flow [2024-02-02 09:15:16,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:15:16,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:15:16,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 230 transitions. [2024-02-02 09:15:16,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831932773109244 [2024-02-02 09:15:16,086 INFO L175 Difference]: Start difference. First operand has 177 places, 303 transitions, 5342 flow. Second operand 7 states and 230 transitions. [2024-02-02 09:15:16,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 384 transitions, 6952 flow [2024-02-02 09:15:16,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 384 transitions, 6690 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-02-02 09:15:16,330 INFO L231 Difference]: Finished difference. Result has 181 places, 321 transitions, 5559 flow [2024-02-02 09:15:16,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=5102, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5559, PETRI_PLACES=181, PETRI_TRANSITIONS=321} [2024-02-02 09:15:16,331 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 109 predicate places. [2024-02-02 09:15:16,331 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 321 transitions, 5559 flow [2024-02-02 09:15:16,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:16,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:16,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:16,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-02-02 09:15:16,331 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:16,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:16,332 INFO L85 PathProgramCache]: Analyzing trace with hash -324021776, now seen corresponding path program 1 times [2024-02-02 09:15:16,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:16,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210606632] [2024-02-02 09:15:16,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:16,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:16,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:16,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:16,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:16,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210606632] [2024-02-02 09:15:16,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210606632] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:16,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:16,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:15:16,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025036353] [2024-02-02 09:15:16,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:16,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:15:16,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:16,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:15:16,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:15:16,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:16,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 321 transitions, 5559 flow. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:16,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:16,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:16,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:17,463 INFO L124 PetriNetUnfolderBase]: 2585/4650 cut-off events. [2024-02-02 09:15:17,463 INFO L125 PetriNetUnfolderBase]: For 82842/83176 co-relation queries the response was YES. [2024-02-02 09:15:17,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29849 conditions, 4650 events. 2585/4650 cut-off events. For 82842/83176 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 30412 event pairs, 612 based on Foata normal form. 78/4488 useless extension candidates. Maximal degree in co-relation 29762. Up to 1982 conditions per place. [2024-02-02 09:15:17,507 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 286 selfloop transitions, 91 changer transitions 0/414 dead transitions. [2024-02-02 09:15:17,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 414 transitions, 7296 flow [2024-02-02 09:15:17,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:15:17,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:15:17,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 231 transitions. [2024-02-02 09:15:17,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4852941176470588 [2024-02-02 09:15:17,509 INFO L175 Difference]: Start difference. First operand has 181 places, 321 transitions, 5559 flow. Second operand 7 states and 231 transitions. [2024-02-02 09:15:17,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 414 transitions, 7296 flow [2024-02-02 09:15:17,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 414 transitions, 7252 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-02 09:15:17,769 INFO L231 Difference]: Finished difference. Result has 189 places, 339 transitions, 5996 flow [2024-02-02 09:15:17,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=5525, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5996, PETRI_PLACES=189, PETRI_TRANSITIONS=339} [2024-02-02 09:15:17,769 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 117 predicate places. [2024-02-02 09:15:17,769 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 339 transitions, 5996 flow [2024-02-02 09:15:17,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:17,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:17,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:17,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-02-02 09:15:17,770 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:17,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:17,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1631179328, now seen corresponding path program 2 times [2024-02-02 09:15:17,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:17,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316768007] [2024-02-02 09:15:17,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:17,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:17,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:17,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:17,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:17,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316768007] [2024-02-02 09:15:17,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316768007] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:17,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:17,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:15:17,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010623028] [2024-02-02 09:15:17,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:17,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:15:17,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:17,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:15:17,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:15:17,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:17,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 339 transitions, 5996 flow. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:17,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:17,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:17,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:18,850 INFO L124 PetriNetUnfolderBase]: 2775/4981 cut-off events. [2024-02-02 09:15:18,851 INFO L125 PetriNetUnfolderBase]: For 96736/97109 co-relation queries the response was YES. [2024-02-02 09:15:18,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32606 conditions, 4981 events. 2775/4981 cut-off events. For 96736/97109 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 33101 event pairs, 830 based on Foata normal form. 75/4827 useless extension candidates. Maximal degree in co-relation 32515. Up to 2027 conditions per place. [2024-02-02 09:15:18,906 INFO L140 encePairwiseOnDemand]: 52/68 looper letters, 273 selfloop transitions, 126 changer transitions 0/436 dead transitions. [2024-02-02 09:15:18,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 436 transitions, 7899 flow [2024-02-02 09:15:18,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:15:18,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:15:18,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 238 transitions. [2024-02-02 09:15:18,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-02-02 09:15:18,909 INFO L175 Difference]: Start difference. First operand has 189 places, 339 transitions, 5996 flow. Second operand 7 states and 238 transitions. [2024-02-02 09:15:18,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 436 transitions, 7899 flow [2024-02-02 09:15:19,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 436 transitions, 7839 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-02-02 09:15:19,231 INFO L231 Difference]: Finished difference. Result has 198 places, 369 transitions, 6699 flow [2024-02-02 09:15:19,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=5948, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6699, PETRI_PLACES=198, PETRI_TRANSITIONS=369} [2024-02-02 09:15:19,232 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 126 predicate places. [2024-02-02 09:15:19,232 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 369 transitions, 6699 flow [2024-02-02 09:15:19,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:19,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:19,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:19,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-02-02 09:15:19,232 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:19,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:19,233 INFO L85 PathProgramCache]: Analyzing trace with hash -131945686, now seen corresponding path program 3 times [2024-02-02 09:15:19,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:19,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859404219] [2024-02-02 09:15:19,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:19,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:19,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:19,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:19,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:19,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859404219] [2024-02-02 09:15:19,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859404219] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:19,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:19,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:15:19,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703389210] [2024-02-02 09:15:19,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:19,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:15:19,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:19,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:15:19,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:15:19,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:19,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 369 transitions, 6699 flow. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:19,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:19,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:19,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:20,377 INFO L124 PetriNetUnfolderBase]: 2880/5172 cut-off events. [2024-02-02 09:15:20,378 INFO L125 PetriNetUnfolderBase]: For 107920/108309 co-relation queries the response was YES. [2024-02-02 09:15:20,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35595 conditions, 5172 events. 2880/5172 cut-off events. For 107920/108309 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 34671 event pairs, 807 based on Foata normal form. 67/5001 useless extension candidates. Maximal degree in co-relation 35499. Up to 2067 conditions per place. [2024-02-02 09:15:20,436 INFO L140 encePairwiseOnDemand]: 53/68 looper letters, 266 selfloop transitions, 151 changer transitions 0/454 dead transitions. [2024-02-02 09:15:20,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 454 transitions, 8507 flow [2024-02-02 09:15:20,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:15:20,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:15:20,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 234 transitions. [2024-02-02 09:15:20,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49159663865546216 [2024-02-02 09:15:20,438 INFO L175 Difference]: Start difference. First operand has 198 places, 369 transitions, 6699 flow. Second operand 7 states and 234 transitions. [2024-02-02 09:15:20,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 454 transitions, 8507 flow [2024-02-02 09:15:20,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 454 transitions, 8445 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-02-02 09:15:20,787 INFO L231 Difference]: Finished difference. Result has 206 places, 395 transitions, 7363 flow [2024-02-02 09:15:20,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=6645, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7363, PETRI_PLACES=206, PETRI_TRANSITIONS=395} [2024-02-02 09:15:20,788 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 134 predicate places. [2024-02-02 09:15:20,788 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 395 transitions, 7363 flow [2024-02-02 09:15:20,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:20,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:20,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:20,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-02-02 09:15:20,788 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:20,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:20,788 INFO L85 PathProgramCache]: Analyzing trace with hash -130871536, now seen corresponding path program 4 times [2024-02-02 09:15:20,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:20,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221425942] [2024-02-02 09:15:20,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:20,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:20,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:20,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:20,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:20,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221425942] [2024-02-02 09:15:20,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221425942] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:20,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:20,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:15:20,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343470375] [2024-02-02 09:15:20,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:20,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:15:20,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:20,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:15:20,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:15:20,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:20,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 395 transitions, 7363 flow. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:20,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:20,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:20,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:22,139 INFO L124 PetriNetUnfolderBase]: 2899/5209 cut-off events. [2024-02-02 09:15:22,139 INFO L125 PetriNetUnfolderBase]: For 120866/121270 co-relation queries the response was YES. [2024-02-02 09:15:22,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37514 conditions, 5209 events. 2899/5209 cut-off events. For 120866/121270 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 34956 event pairs, 864 based on Foata normal form. 75/5049 useless extension candidates. Maximal degree in co-relation 37414. Up to 2090 conditions per place. [2024-02-02 09:15:22,194 INFO L140 encePairwiseOnDemand]: 53/68 looper letters, 266 selfloop transitions, 153 changer transitions 0/456 dead transitions. [2024-02-02 09:15:22,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 456 transitions, 8907 flow [2024-02-02 09:15:22,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:15:22,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:15:22,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 232 transitions. [2024-02-02 09:15:22,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48739495798319327 [2024-02-02 09:15:22,195 INFO L175 Difference]: Start difference. First operand has 206 places, 395 transitions, 7363 flow. Second operand 7 states and 232 transitions. [2024-02-02 09:15:22,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 456 transitions, 8907 flow [2024-02-02 09:15:22,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 456 transitions, 8718 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-02-02 09:15:22,660 INFO L231 Difference]: Finished difference. Result has 211 places, 402 transitions, 7645 flow [2024-02-02 09:15:22,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=7176, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7645, PETRI_PLACES=211, PETRI_TRANSITIONS=402} [2024-02-02 09:15:22,660 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 139 predicate places. [2024-02-02 09:15:22,660 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 402 transitions, 7645 flow [2024-02-02 09:15:22,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:22,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:22,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:22,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-02-02 09:15:22,661 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:22,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:22,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1739046161, now seen corresponding path program 1 times [2024-02-02 09:15:22,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:22,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195623616] [2024-02-02 09:15:22,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:22,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:22,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:22,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:22,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:22,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195623616] [2024-02-02 09:15:22,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195623616] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:22,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:22,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:15:22,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534611261] [2024-02-02 09:15:22,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:22,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:15:22,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:22,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:15:22,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:15:22,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:15:22,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 402 transitions, 7645 flow. Second operand has 8 states, 8 states have (on average 27.625) internal successors, (221), 8 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:22,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:22,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:15:22,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:24,163 INFO L124 PetriNetUnfolderBase]: 2524/4873 cut-off events. [2024-02-02 09:15:24,163 INFO L125 PetriNetUnfolderBase]: For 119518/120175 co-relation queries the response was YES. [2024-02-02 09:15:24,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35537 conditions, 4873 events. 2524/4873 cut-off events. For 119518/120175 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 35945 event pairs, 578 based on Foata normal form. 71/4682 useless extension candidates. Maximal degree in co-relation 35435. Up to 1854 conditions per place. [2024-02-02 09:15:24,218 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 281 selfloop transitions, 134 changer transitions 1/487 dead transitions. [2024-02-02 09:15:24,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 487 transitions, 9327 flow [2024-02-02 09:15:24,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:15:24,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:15:24,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 316 transitions. [2024-02-02 09:15:24,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6638655462184874 [2024-02-02 09:15:24,219 INFO L175 Difference]: Start difference. First operand has 211 places, 402 transitions, 7645 flow. Second operand 7 states and 316 transitions. [2024-02-02 09:15:24,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 487 transitions, 9327 flow [2024-02-02 09:15:24,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 487 transitions, 9053 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-02-02 09:15:24,627 INFO L231 Difference]: Finished difference. Result has 218 places, 410 transitions, 8005 flow [2024-02-02 09:15:24,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=7371, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8005, PETRI_PLACES=218, PETRI_TRANSITIONS=410} [2024-02-02 09:15:24,627 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 146 predicate places. [2024-02-02 09:15:24,628 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 410 transitions, 8005 flow [2024-02-02 09:15:24,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.625) internal successors, (221), 8 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:24,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:24,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:24,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-02-02 09:15:24,628 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:24,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:24,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1764092347, now seen corresponding path program 1 times [2024-02-02 09:15:24,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:24,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500709180] [2024-02-02 09:15:24,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:24,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:24,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:24,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:24,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:24,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500709180] [2024-02-02 09:15:24,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500709180] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:24,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:24,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:15:24,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814613264] [2024-02-02 09:15:24,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:24,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:15:24,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:24,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:15:24,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:15:24,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:15:24,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 410 transitions, 8005 flow. Second operand has 8 states, 8 states have (on average 27.625) internal successors, (221), 8 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:24,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:24,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:15:24,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:26,275 INFO L124 PetriNetUnfolderBase]: 2639/5091 cut-off events. [2024-02-02 09:15:26,276 INFO L125 PetriNetUnfolderBase]: For 136281/137140 co-relation queries the response was YES. [2024-02-02 09:15:26,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37925 conditions, 5091 events. 2639/5091 cut-off events. For 136281/137140 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 38294 event pairs, 738 based on Foata normal form. 153/5036 useless extension candidates. Maximal degree in co-relation 37818. Up to 2020 conditions per place. [2024-02-02 09:15:26,334 INFO L140 encePairwiseOnDemand]: 56/68 looper letters, 280 selfloop transitions, 156 changer transitions 0/507 dead transitions. [2024-02-02 09:15:26,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 507 transitions, 10228 flow [2024-02-02 09:15:26,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:15:26,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:15:26,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 304 transitions. [2024-02-02 09:15:26,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6386554621848739 [2024-02-02 09:15:26,336 INFO L175 Difference]: Start difference. First operand has 218 places, 410 transitions, 8005 flow. Second operand 7 states and 304 transitions. [2024-02-02 09:15:26,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 507 transitions, 10228 flow [2024-02-02 09:15:26,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 507 transitions, 10175 flow, removed 24 selfloop flow, removed 1 redundant places. [2024-02-02 09:15:26,782 INFO L231 Difference]: Finished difference. Result has 227 places, 441 transitions, 9072 flow [2024-02-02 09:15:26,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=7967, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9072, PETRI_PLACES=227, PETRI_TRANSITIONS=441} [2024-02-02 09:15:26,783 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 155 predicate places. [2024-02-02 09:15:26,783 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 441 transitions, 9072 flow [2024-02-02 09:15:26,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.625) internal successors, (221), 8 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:26,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:26,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:26,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-02-02 09:15:26,783 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:26,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:26,783 INFO L85 PathProgramCache]: Analyzing trace with hash -516077287, now seen corresponding path program 1 times [2024-02-02 09:15:26,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:26,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677455655] [2024-02-02 09:15:26,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:26,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:26,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:26,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:26,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:26,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677455655] [2024-02-02 09:15:26,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677455655] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:26,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:26,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:15:26,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966742539] [2024-02-02 09:15:26,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:26,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:15:26,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:26,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:15:26,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:15:26,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:26,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 441 transitions, 9072 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:26,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:26,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:26,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:28,625 INFO L124 PetriNetUnfolderBase]: 3540/6541 cut-off events. [2024-02-02 09:15:28,625 INFO L125 PetriNetUnfolderBase]: For 168881/169616 co-relation queries the response was YES. [2024-02-02 09:15:28,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48484 conditions, 6541 events. 3540/6541 cut-off events. For 168881/169616 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 47310 event pairs, 963 based on Foata normal form. 105/6492 useless extension candidates. Maximal degree in co-relation 48372. Up to 2818 conditions per place. [2024-02-02 09:15:28,693 INFO L140 encePairwiseOnDemand]: 50/68 looper letters, 326 selfloop transitions, 179 changer transitions 1/543 dead transitions. [2024-02-02 09:15:28,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 543 transitions, 11128 flow [2024-02-02 09:15:28,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:15:28,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:15:28,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 269 transitions. [2024-02-02 09:15:28,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5651260504201681 [2024-02-02 09:15:28,694 INFO L175 Difference]: Start difference. First operand has 227 places, 441 transitions, 9072 flow. Second operand 7 states and 269 transitions. [2024-02-02 09:15:28,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 543 transitions, 11128 flow [2024-02-02 09:15:29,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 543 transitions, 11094 flow, removed 17 selfloop flow, removed 0 redundant places. [2024-02-02 09:15:29,322 INFO L231 Difference]: Finished difference. Result has 236 places, 457 transitions, 9775 flow [2024-02-02 09:15:29,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9038, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9775, PETRI_PLACES=236, PETRI_TRANSITIONS=457} [2024-02-02 09:15:29,323 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 164 predicate places. [2024-02-02 09:15:29,323 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 457 transitions, 9775 flow [2024-02-02 09:15:29,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:29,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:29,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:29,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-02-02 09:15:29,323 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:29,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:29,323 INFO L85 PathProgramCache]: Analyzing trace with hash 757479141, now seen corresponding path program 2 times [2024-02-02 09:15:29,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:29,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282177395] [2024-02-02 09:15:29,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:29,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:29,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:29,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:29,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:29,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282177395] [2024-02-02 09:15:29,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282177395] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:29,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:29,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:15:29,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344898332] [2024-02-02 09:15:29,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:29,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:15:29,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:29,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:15:29,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:15:29,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:29,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 457 transitions, 9775 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:29,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:29,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:29,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:31,245 INFO L124 PetriNetUnfolderBase]: 3522/6523 cut-off events. [2024-02-02 09:15:31,245 INFO L125 PetriNetUnfolderBase]: For 183856/184571 co-relation queries the response was YES. [2024-02-02 09:15:31,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50740 conditions, 6523 events. 3522/6523 cut-off events. For 183856/184571 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 47183 event pairs, 1015 based on Foata normal form. 105/6474 useless extension candidates. Maximal degree in co-relation 50623. Up to 2818 conditions per place. [2024-02-02 09:15:31,339 INFO L140 encePairwiseOnDemand]: 50/68 looper letters, 323 selfloop transitions, 176 changer transitions 2/538 dead transitions. [2024-02-02 09:15:31,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 538 transitions, 11560 flow [2024-02-02 09:15:31,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:15:31,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:15:31,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 265 transitions. [2024-02-02 09:15:31,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5567226890756303 [2024-02-02 09:15:31,346 INFO L175 Difference]: Start difference. First operand has 236 places, 457 transitions, 9775 flow. Second operand 7 states and 265 transitions. [2024-02-02 09:15:31,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 538 transitions, 11560 flow [2024-02-02 09:15:32,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 538 transitions, 11326 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-02-02 09:15:32,288 INFO L231 Difference]: Finished difference. Result has 239 places, 461 transitions, 10076 flow [2024-02-02 09:15:32,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9551, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10076, PETRI_PLACES=239, PETRI_TRANSITIONS=461} [2024-02-02 09:15:32,289 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 167 predicate places. [2024-02-02 09:15:32,289 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 461 transitions, 10076 flow [2024-02-02 09:15:32,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:32,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:32,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:32,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-02-02 09:15:32,289 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:32,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:32,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1863492209, now seen corresponding path program 1 times [2024-02-02 09:15:32,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:32,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619603873] [2024-02-02 09:15:32,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:32,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:32,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:32,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:32,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:32,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619603873] [2024-02-02 09:15:32,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619603873] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:32,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:32,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:15:32,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660502744] [2024-02-02 09:15:32,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:32,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-02 09:15:32,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:32,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-02 09:15:32,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-02 09:15:32,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:15:32,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 461 transitions, 10076 flow. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:32,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:32,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:15:32,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:33,969 INFO L124 PetriNetUnfolderBase]: 2792/5449 cut-off events. [2024-02-02 09:15:33,969 INFO L125 PetriNetUnfolderBase]: For 178329/179547 co-relation queries the response was YES. [2024-02-02 09:15:34,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44313 conditions, 5449 events. 2792/5449 cut-off events. For 178329/179547 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 41782 event pairs, 963 based on Foata normal form. 135/5417 useless extension candidates. Maximal degree in co-relation 44196. Up to 2686 conditions per place. [2024-02-02 09:15:34,079 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 307 selfloop transitions, 122 changer transitions 0/504 dead transitions. [2024-02-02 09:15:34,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 504 transitions, 11570 flow [2024-02-02 09:15:34,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:15:34,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:15:34,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 235 transitions. [2024-02-02 09:15:34,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5759803921568627 [2024-02-02 09:15:34,080 INFO L175 Difference]: Start difference. First operand has 239 places, 461 transitions, 10076 flow. Second operand 6 states and 235 transitions. [2024-02-02 09:15:34,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 504 transitions, 11570 flow [2024-02-02 09:15:34,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 504 transitions, 11219 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-02-02 09:15:35,010 INFO L231 Difference]: Finished difference. Result has 240 places, 468 transitions, 10181 flow [2024-02-02 09:15:35,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9737, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=10181, PETRI_PLACES=240, PETRI_TRANSITIONS=468} [2024-02-02 09:15:35,011 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 168 predicate places. [2024-02-02 09:15:35,012 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 468 transitions, 10181 flow [2024-02-02 09:15:35,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:35,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:35,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:35,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-02-02 09:15:35,012 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:35,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:35,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1792715427, now seen corresponding path program 2 times [2024-02-02 09:15:35,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:35,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141342727] [2024-02-02 09:15:35,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:35,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:35,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:35,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:35,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:35,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141342727] [2024-02-02 09:15:35,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141342727] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:35,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:35,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:15:35,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469595104] [2024-02-02 09:15:35,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:35,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-02 09:15:35,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:35,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-02 09:15:35,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-02 09:15:35,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:15:35,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 468 transitions, 10181 flow. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:35,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:35,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:15:35,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:36,504 INFO L124 PetriNetUnfolderBase]: 2800/5459 cut-off events. [2024-02-02 09:15:36,504 INFO L125 PetriNetUnfolderBase]: For 174684/175929 co-relation queries the response was YES. [2024-02-02 09:15:36,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44333 conditions, 5459 events. 2800/5459 cut-off events. For 174684/175929 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 41920 event pairs, 969 based on Foata normal form. 139/5431 useless extension candidates. Maximal degree in co-relation 44216. Up to 2694 conditions per place. [2024-02-02 09:15:36,583 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 305 selfloop transitions, 140 changer transitions 0/520 dead transitions. [2024-02-02 09:15:36,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 520 transitions, 11846 flow [2024-02-02 09:15:36,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:15:36,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:15:36,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 243 transitions. [2024-02-02 09:15:36,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5955882352941176 [2024-02-02 09:15:36,584 INFO L175 Difference]: Start difference. First operand has 240 places, 468 transitions, 10181 flow. Second operand 6 states and 243 transitions. [2024-02-02 09:15:36,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 520 transitions, 11846 flow [2024-02-02 09:15:37,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 520 transitions, 11687 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-02-02 09:15:37,268 INFO L231 Difference]: Finished difference. Result has 245 places, 479 transitions, 10591 flow [2024-02-02 09:15:37,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=10030, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=10591, PETRI_PLACES=245, PETRI_TRANSITIONS=479} [2024-02-02 09:15:37,269 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 173 predicate places. [2024-02-02 09:15:37,269 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 479 transitions, 10591 flow [2024-02-02 09:15:37,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:37,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:37,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:37,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-02-02 09:15:37,270 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:37,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:37,270 INFO L85 PathProgramCache]: Analyzing trace with hash 431172027, now seen corresponding path program 3 times [2024-02-02 09:15:37,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:37,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723103960] [2024-02-02 09:15:37,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:37,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:37,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:37,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:37,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:37,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723103960] [2024-02-02 09:15:37,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723103960] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:37,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:37,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:15:37,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630808256] [2024-02-02 09:15:37,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:37,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:15:37,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:37,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:15:37,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:15:37,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:37,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 479 transitions, 10591 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:37,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:37,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:37,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:39,639 INFO L124 PetriNetUnfolderBase]: 3886/7323 cut-off events. [2024-02-02 09:15:39,639 INFO L125 PetriNetUnfolderBase]: For 205338/206235 co-relation queries the response was YES. [2024-02-02 09:15:39,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56900 conditions, 7323 events. 3886/7323 cut-off events. For 205338/206235 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 55528 event pairs, 1335 based on Foata normal form. 105/7264 useless extension candidates. Maximal degree in co-relation 56781. Up to 2838 conditions per place. [2024-02-02 09:15:39,765 INFO L140 encePairwiseOnDemand]: 50/68 looper letters, 372 selfloop transitions, 176 changer transitions 1/586 dead transitions. [2024-02-02 09:15:39,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 586 transitions, 12929 flow [2024-02-02 09:15:39,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:15:39,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:15:39,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 267 transitions. [2024-02-02 09:15:39,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5609243697478992 [2024-02-02 09:15:39,766 INFO L175 Difference]: Start difference. First operand has 245 places, 479 transitions, 10591 flow. Second operand 7 states and 267 transitions. [2024-02-02 09:15:39,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 586 transitions, 12929 flow [2024-02-02 09:15:40,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 586 transitions, 12778 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-02-02 09:15:40,531 INFO L231 Difference]: Finished difference. Result has 253 places, 498 transitions, 11357 flow [2024-02-02 09:15:40,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=10440, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11357, PETRI_PLACES=253, PETRI_TRANSITIONS=498} [2024-02-02 09:15:40,531 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 181 predicate places. [2024-02-02 09:15:40,531 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 498 transitions, 11357 flow [2024-02-02 09:15:40,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:40,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:40,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:40,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-02-02 09:15:40,532 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:40,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:40,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1602026451, now seen corresponding path program 4 times [2024-02-02 09:15:40,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:40,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267596014] [2024-02-02 09:15:40,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:40,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:40,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:40,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:40,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:40,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267596014] [2024-02-02 09:15:40,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267596014] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:40,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:40,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:15:40,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980991073] [2024-02-02 09:15:40,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:40,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:15:40,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:40,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:15:40,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:15:40,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:40,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 498 transitions, 11357 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:40,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:40,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:40,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:43,105 INFO L124 PetriNetUnfolderBase]: 3994/7530 cut-off events. [2024-02-02 09:15:43,105 INFO L125 PetriNetUnfolderBase]: For 222314/223162 co-relation queries the response was YES. [2024-02-02 09:15:43,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59401 conditions, 7530 events. 3994/7530 cut-off events. For 222314/223162 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 57561 event pairs, 1325 based on Foata normal form. 107/7477 useless extension candidates. Maximal degree in co-relation 59278. Up to 3343 conditions per place. [2024-02-02 09:15:43,202 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 413 selfloop transitions, 130 changer transitions 1/581 dead transitions. [2024-02-02 09:15:43,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 581 transitions, 13387 flow [2024-02-02 09:15:43,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:15:43,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:15:43,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 249 transitions. [2024-02-02 09:15:43,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523109243697479 [2024-02-02 09:15:43,204 INFO L175 Difference]: Start difference. First operand has 253 places, 498 transitions, 11357 flow. Second operand 7 states and 249 transitions. [2024-02-02 09:15:43,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 581 transitions, 13387 flow [2024-02-02 09:15:44,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 581 transitions, 13232 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-02-02 09:15:44,048 INFO L231 Difference]: Finished difference. Result has 255 places, 506 transitions, 11793 flow [2024-02-02 09:15:44,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=11194, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11793, PETRI_PLACES=255, PETRI_TRANSITIONS=506} [2024-02-02 09:15:44,049 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 183 predicate places. [2024-02-02 09:15:44,049 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 506 transitions, 11793 flow [2024-02-02 09:15:44,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:44,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:44,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:44,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-02-02 09:15:44,049 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:44,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:44,050 INFO L85 PathProgramCache]: Analyzing trace with hash -9771353, now seen corresponding path program 1 times [2024-02-02 09:15:44,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:44,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651961087] [2024-02-02 09:15:44,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:44,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:44,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:44,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:44,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:44,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651961087] [2024-02-02 09:15:44,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651961087] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:44,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:44,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:15:44,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030332183] [2024-02-02 09:15:44,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:44,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:15:44,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:44,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:15:44,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:15:44,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:44,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 506 transitions, 11793 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:44,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:44,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:44,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:46,528 INFO L124 PetriNetUnfolderBase]: 4158/7816 cut-off events. [2024-02-02 09:15:46,528 INFO L125 PetriNetUnfolderBase]: For 248039/249027 co-relation queries the response was YES. [2024-02-02 09:15:46,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62609 conditions, 7816 events. 4158/7816 cut-off events. For 248039/249027 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 59545 event pairs, 1422 based on Foata normal form. 152/7805 useless extension candidates. Maximal degree in co-relation 62487. Up to 4162 conditions per place. [2024-02-02 09:15:46,631 INFO L140 encePairwiseOnDemand]: 50/68 looper letters, 416 selfloop transitions, 163 changer transitions 0/622 dead transitions. [2024-02-02 09:15:46,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 622 transitions, 14663 flow [2024-02-02 09:15:46,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:15:46,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:15:46,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 277 transitions. [2024-02-02 09:15:46,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5091911764705882 [2024-02-02 09:15:46,632 INFO L175 Difference]: Start difference. First operand has 255 places, 506 transitions, 11793 flow. Second operand 8 states and 277 transitions. [2024-02-02 09:15:46,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 622 transitions, 14663 flow [2024-02-02 09:15:47,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 622 transitions, 14537 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-02-02 09:15:47,556 INFO L231 Difference]: Finished difference. Result has 264 places, 536 transitions, 12884 flow [2024-02-02 09:15:47,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=11693, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12884, PETRI_PLACES=264, PETRI_TRANSITIONS=536} [2024-02-02 09:15:47,557 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 192 predicate places. [2024-02-02 09:15:47,557 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 536 transitions, 12884 flow [2024-02-02 09:15:47,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:47,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:47,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:47,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-02-02 09:15:47,558 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:47,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:47,558 INFO L85 PathProgramCache]: Analyzing trace with hash -820760589, now seen corresponding path program 1 times [2024-02-02 09:15:47,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:47,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079295995] [2024-02-02 09:15:47,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:47,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:47,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:47,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:47,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:47,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079295995] [2024-02-02 09:15:47,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079295995] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:47,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:47,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:15:47,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667980909] [2024-02-02 09:15:47,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:47,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-02 09:15:47,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:47,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-02 09:15:47,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-02 09:15:47,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:15:47,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 536 transitions, 12884 flow. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:47,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:47,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:15:47,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:49,296 INFO L124 PetriNetUnfolderBase]: 3330/6540 cut-off events. [2024-02-02 09:15:49,296 INFO L125 PetriNetUnfolderBase]: For 248301/249932 co-relation queries the response was YES. [2024-02-02 09:15:49,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56119 conditions, 6540 events. 3330/6540 cut-off events. For 248301/249932 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 52624 event pairs, 1502 based on Foata normal form. 173/6481 useless extension candidates. Maximal degree in co-relation 55992. Up to 3727 conditions per place. [2024-02-02 09:15:49,384 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 360 selfloop transitions, 133 changer transitions 0/571 dead transitions. [2024-02-02 09:15:49,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 571 transitions, 14467 flow [2024-02-02 09:15:49,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:15:49,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:15:49,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 232 transitions. [2024-02-02 09:15:49,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5686274509803921 [2024-02-02 09:15:49,385 INFO L175 Difference]: Start difference. First operand has 264 places, 536 transitions, 12884 flow. Second operand 6 states and 232 transitions. [2024-02-02 09:15:49,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 571 transitions, 14467 flow [2024-02-02 09:15:50,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 571 transitions, 14441 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-02-02 09:15:50,258 INFO L231 Difference]: Finished difference. Result has 269 places, 538 transitions, 13230 flow [2024-02-02 09:15:50,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=12858, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=13230, PETRI_PLACES=269, PETRI_TRANSITIONS=538} [2024-02-02 09:15:50,258 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 197 predicate places. [2024-02-02 09:15:50,258 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 538 transitions, 13230 flow [2024-02-02 09:15:50,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:50,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:50,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:50,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-02-02 09:15:50,259 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:50,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:50,259 INFO L85 PathProgramCache]: Analyzing trace with hash 328775955, now seen corresponding path program 2 times [2024-02-02 09:15:50,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:50,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119264845] [2024-02-02 09:15:50,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:50,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:50,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:50,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:50,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:50,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119264845] [2024-02-02 09:15:50,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119264845] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:50,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:50,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:15:50,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792760779] [2024-02-02 09:15:50,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:50,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-02 09:15:50,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:50,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-02 09:15:50,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-02 09:15:50,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:15:50,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 538 transitions, 13230 flow. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:50,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:50,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:15:50,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:52,178 INFO L124 PetriNetUnfolderBase]: 3326/6534 cut-off events. [2024-02-02 09:15:52,178 INFO L125 PetriNetUnfolderBase]: For 256852/258495 co-relation queries the response was YES. [2024-02-02 09:15:52,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56678 conditions, 6534 events. 3326/6534 cut-off events. For 256852/258495 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 52655 event pairs, 1496 based on Foata normal form. 177/6479 useless extension candidates. Maximal degree in co-relation 56549. Up to 3731 conditions per place. [2024-02-02 09:15:52,284 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 354 selfloop transitions, 149 changer transitions 0/581 dead transitions. [2024-02-02 09:15:52,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 581 transitions, 14968 flow [2024-02-02 09:15:52,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:15:52,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:15:52,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 238 transitions. [2024-02-02 09:15:52,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-02-02 09:15:52,285 INFO L175 Difference]: Start difference. First operand has 269 places, 538 transitions, 13230 flow. Second operand 6 states and 238 transitions. [2024-02-02 09:15:52,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 581 transitions, 14968 flow [2024-02-02 09:15:53,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 581 transitions, 14774 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-02-02 09:15:53,353 INFO L231 Difference]: Finished difference. Result has 274 places, 545 transitions, 13572 flow [2024-02-02 09:15:53,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=13042, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=13572, PETRI_PLACES=274, PETRI_TRANSITIONS=545} [2024-02-02 09:15:53,354 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 202 predicate places. [2024-02-02 09:15:53,354 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 545 transitions, 13572 flow [2024-02-02 09:15:53,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 6 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:53,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:53,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:53,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-02-02 09:15:53,355 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:53,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:53,355 INFO L85 PathProgramCache]: Analyzing trace with hash 206800019, now seen corresponding path program 1 times [2024-02-02 09:15:53,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:53,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145091955] [2024-02-02 09:15:53,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:53,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:53,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:53,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:53,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:53,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145091955] [2024-02-02 09:15:53,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145091955] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:53,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:53,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:15:53,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134333352] [2024-02-02 09:15:53,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:53,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:15:53,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:53,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:15:53,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:15:53,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:15:53,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 545 transitions, 13572 flow. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:53,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:53,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:15:53,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:55,144 INFO L124 PetriNetUnfolderBase]: 3359/6739 cut-off events. [2024-02-02 09:15:55,144 INFO L125 PetriNetUnfolderBase]: For 273820/275518 co-relation queries the response was YES. [2024-02-02 09:15:55,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58929 conditions, 6739 events. 3359/6739 cut-off events. For 273820/275518 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 56222 event pairs, 776 based on Foata normal form. 326/6801 useless extension candidates. Maximal degree in co-relation 58798. Up to 3103 conditions per place. [2024-02-02 09:15:55,240 INFO L140 encePairwiseOnDemand]: 63/68 looper letters, 384 selfloop transitions, 135 changer transitions 14/611 dead transitions. [2024-02-02 09:15:55,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 611 transitions, 15841 flow [2024-02-02 09:15:55,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:15:55,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:15:55,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 166 transitions. [2024-02-02 09:15:55,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6102941176470589 [2024-02-02 09:15:55,241 INFO L175 Difference]: Start difference. First operand has 274 places, 545 transitions, 13572 flow. Second operand 4 states and 166 transitions. [2024-02-02 09:15:55,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 611 transitions, 15841 flow [2024-02-02 09:15:56,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 611 transitions, 15664 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-02-02 09:15:56,149 INFO L231 Difference]: Finished difference. Result has 276 places, 552 transitions, 13956 flow [2024-02-02 09:15:56,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=13406, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=13956, PETRI_PLACES=276, PETRI_TRANSITIONS=552} [2024-02-02 09:15:56,150 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 204 predicate places. [2024-02-02 09:15:56,150 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 552 transitions, 13956 flow [2024-02-02 09:15:56,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:56,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:56,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:56,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-02-02 09:15:56,150 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:56,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:56,150 INFO L85 PathProgramCache]: Analyzing trace with hash 239868029, now seen corresponding path program 2 times [2024-02-02 09:15:56,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:56,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436891613] [2024-02-02 09:15:56,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:56,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:56,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:56,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:56,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:56,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436891613] [2024-02-02 09:15:56,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436891613] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:56,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:56,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-02 09:15:56,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937951008] [2024-02-02 09:15:56,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:56,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-02 09:15:56,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:56,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-02 09:15:56,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-02 09:15:56,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:15:56,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 552 transitions, 13956 flow. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:56,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:56,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:15:56,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:15:57,423 INFO L124 PetriNetUnfolderBase]: 2079/4297 cut-off events. [2024-02-02 09:15:57,424 INFO L125 PetriNetUnfolderBase]: For 239856/240718 co-relation queries the response was YES. [2024-02-02 09:15:57,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43499 conditions, 4297 events. 2079/4297 cut-off events. For 239856/240718 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 33669 event pairs, 499 based on Foata normal form. 281/4362 useless extension candidates. Maximal degree in co-relation 43367. Up to 2050 conditions per place. [2024-02-02 09:15:57,511 INFO L140 encePairwiseOnDemand]: 63/68 looper letters, 333 selfloop transitions, 121 changer transitions 20/547 dead transitions. [2024-02-02 09:15:57,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 547 transitions, 14839 flow [2024-02-02 09:15:57,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:15:57,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:15:57,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 183 transitions. [2024-02-02 09:15:57,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.538235294117647 [2024-02-02 09:15:57,512 INFO L175 Difference]: Start difference. First operand has 276 places, 552 transitions, 13956 flow. Second operand 5 states and 183 transitions. [2024-02-02 09:15:57,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 547 transitions, 14839 flow [2024-02-02 09:15:58,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 547 transitions, 14233 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-02-02 09:15:58,396 INFO L231 Difference]: Finished difference. Result has 271 places, 516 transitions, 13273 flow [2024-02-02 09:15:58,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=12843, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=13273, PETRI_PLACES=271, PETRI_TRANSITIONS=516} [2024-02-02 09:15:58,396 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 199 predicate places. [2024-02-02 09:15:58,396 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 516 transitions, 13273 flow [2024-02-02 09:15:58,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:58,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:15:58,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:15:58,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-02-02 09:15:58,397 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:15:58,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:15:58,397 INFO L85 PathProgramCache]: Analyzing trace with hash -550508433, now seen corresponding path program 1 times [2024-02-02 09:15:58,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:15:58,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830468167] [2024-02-02 09:15:58,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:15:58,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:15:58,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:15:58,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:15:58,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:15:58,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830468167] [2024-02-02 09:15:58,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830468167] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:15:58,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:15:58,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:15:58,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205597897] [2024-02-02 09:15:58,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:15:58,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:15:58,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:15:58,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:15:58,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:15:58,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:15:58,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 516 transitions, 13273 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:15:58,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:15:58,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:15:58,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:00,286 INFO L124 PetriNetUnfolderBase]: 2579/5080 cut-off events. [2024-02-02 09:16:00,286 INFO L125 PetriNetUnfolderBase]: For 242166/242729 co-relation queries the response was YES. [2024-02-02 09:16:00,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49637 conditions, 5080 events. 2579/5080 cut-off events. For 242166/242729 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 37987 event pairs, 719 based on Foata normal form. 74/5045 useless extension candidates. Maximal degree in co-relation 49511. Up to 2029 conditions per place. [2024-02-02 09:16:00,389 INFO L140 encePairwiseOnDemand]: 53/68 looper letters, 340 selfloop transitions, 185 changer transitions 2/564 dead transitions. [2024-02-02 09:16:00,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 564 transitions, 14974 flow [2024-02-02 09:16:00,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:16:00,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:16:00,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 221 transitions. [2024-02-02 09:16:00,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-02-02 09:16:00,391 INFO L175 Difference]: Start difference. First operand has 271 places, 516 transitions, 13273 flow. Second operand 7 states and 221 transitions. [2024-02-02 09:16:00,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 564 transitions, 14974 flow [2024-02-02 09:16:01,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 564 transitions, 14655 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-02-02 09:16:01,649 INFO L231 Difference]: Finished difference. Result has 271 places, 516 transitions, 13338 flow [2024-02-02 09:16:01,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=12958, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13338, PETRI_PLACES=271, PETRI_TRANSITIONS=516} [2024-02-02 09:16:01,649 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 199 predicate places. [2024-02-02 09:16:01,649 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 516 transitions, 13338 flow [2024-02-02 09:16:01,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:01,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:01,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:01,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-02-02 09:16:01,650 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:16:01,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:01,650 INFO L85 PathProgramCache]: Analyzing trace with hash 116061027, now seen corresponding path program 2 times [2024-02-02 09:16:01,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:01,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837487211] [2024-02-02 09:16:01,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:01,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:01,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:01,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:01,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:01,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837487211] [2024-02-02 09:16:01,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837487211] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:01,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:01,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:16:01,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131793684] [2024-02-02 09:16:01,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:01,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:16:01,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:01,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:16:01,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:16:01,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:16:01,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 516 transitions, 13338 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:01,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:01,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:16:01,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:03,582 INFO L124 PetriNetUnfolderBase]: 2595/5108 cut-off events. [2024-02-02 09:16:03,582 INFO L125 PetriNetUnfolderBase]: For 240301/240864 co-relation queries the response was YES. [2024-02-02 09:16:03,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50490 conditions, 5108 events. 2595/5108 cut-off events. For 240301/240864 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 38236 event pairs, 715 based on Foata normal form. 72/5071 useless extension candidates. Maximal degree in co-relation 50364. Up to 2035 conditions per place. [2024-02-02 09:16:03,654 INFO L140 encePairwiseOnDemand]: 54/68 looper letters, 342 selfloop transitions, 195 changer transitions 2/576 dead transitions. [2024-02-02 09:16:03,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 576 transitions, 15320 flow [2024-02-02 09:16:03,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:16:03,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:16:03,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 229 transitions. [2024-02-02 09:16:03,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4810924369747899 [2024-02-02 09:16:03,655 INFO L175 Difference]: Start difference. First operand has 271 places, 516 transitions, 13338 flow. Second operand 7 states and 229 transitions. [2024-02-02 09:16:03,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 576 transitions, 15320 flow [2024-02-02 09:16:04,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 576 transitions, 15060 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-02 09:16:04,749 INFO L231 Difference]: Finished difference. Result has 275 places, 521 transitions, 13702 flow [2024-02-02 09:16:04,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=13080, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13702, PETRI_PLACES=275, PETRI_TRANSITIONS=521} [2024-02-02 09:16:04,750 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 203 predicate places. [2024-02-02 09:16:04,750 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 521 transitions, 13702 flow [2024-02-02 09:16:04,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:04,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:04,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:04,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-02-02 09:16:04,751 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:16:04,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:04,751 INFO L85 PathProgramCache]: Analyzing trace with hash -110052663, now seen corresponding path program 3 times [2024-02-02 09:16:04,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:04,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939684514] [2024-02-02 09:16:04,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:04,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:04,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:04,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:04,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:04,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939684514] [2024-02-02 09:16:04,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939684514] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:04,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:04,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:16:04,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787013647] [2024-02-02 09:16:04,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:04,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:16:04,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:04,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:16:04,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:16:04,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:16:04,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 521 transitions, 13702 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:04,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:04,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:16:04,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:06,802 INFO L124 PetriNetUnfolderBase]: 2592/5103 cut-off events. [2024-02-02 09:16:06,802 INFO L125 PetriNetUnfolderBase]: For 247765/248343 co-relation queries the response was YES. [2024-02-02 09:16:06,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51041 conditions, 5103 events. 2592/5103 cut-off events. For 247765/248343 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 38133 event pairs, 664 based on Foata normal form. 78/5072 useless extension candidates. Maximal degree in co-relation 50912. Up to 2035 conditions per place. [2024-02-02 09:16:06,913 INFO L140 encePairwiseOnDemand]: 54/68 looper letters, 341 selfloop transitions, 197 changer transitions 2/577 dead transitions. [2024-02-02 09:16:06,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 577 transitions, 15592 flow [2024-02-02 09:16:06,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:16:06,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:16:06,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 225 transitions. [2024-02-02 09:16:06,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4726890756302521 [2024-02-02 09:16:06,914 INFO L175 Difference]: Start difference. First operand has 275 places, 521 transitions, 13702 flow. Second operand 7 states and 225 transitions. [2024-02-02 09:16:06,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 577 transitions, 15592 flow [2024-02-02 09:16:07,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 577 transitions, 15262 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-02-02 09:16:07,833 INFO L231 Difference]: Finished difference. Result has 279 places, 527 transitions, 14010 flow [2024-02-02 09:16:07,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=13382, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14010, PETRI_PLACES=279, PETRI_TRANSITIONS=527} [2024-02-02 09:16:07,834 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 207 predicate places. [2024-02-02 09:16:07,834 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 527 transitions, 14010 flow [2024-02-02 09:16:07,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:07,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:07,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:07,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-02-02 09:16:07,835 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:16:07,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:07,835 INFO L85 PathProgramCache]: Analyzing trace with hash 2146660059, now seen corresponding path program 1 times [2024-02-02 09:16:07,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:07,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369675772] [2024-02-02 09:16:07,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:07,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:07,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:07,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:07,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:07,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369675772] [2024-02-02 09:16:07,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369675772] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:07,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:07,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:16:07,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346009602] [2024-02-02 09:16:07,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:07,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:16:07,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:07,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:16:07,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:16:08,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:16:08,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 527 transitions, 14010 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:08,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:08,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:16:08,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:09,702 INFO L124 PetriNetUnfolderBase]: 2554/5063 cut-off events. [2024-02-02 09:16:09,703 INFO L125 PetriNetUnfolderBase]: For 248189/248768 co-relation queries the response was YES. [2024-02-02 09:16:09,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50698 conditions, 5063 events. 2554/5063 cut-off events. For 248189/248768 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 37820 event pairs, 445 based on Foata normal form. 61/5013 useless extension candidates. Maximal degree in co-relation 50567. Up to 2016 conditions per place. [2024-02-02 09:16:09,767 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 382 selfloop transitions, 150 changer transitions 2/574 dead transitions. [2024-02-02 09:16:09,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 574 transitions, 15719 flow [2024-02-02 09:16:09,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:16:09,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:16:09,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 209 transitions. [2024-02-02 09:16:09,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43907563025210083 [2024-02-02 09:16:09,768 INFO L175 Difference]: Start difference. First operand has 279 places, 527 transitions, 14010 flow. Second operand 7 states and 209 transitions. [2024-02-02 09:16:09,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 574 transitions, 15719 flow [2024-02-02 09:16:10,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 574 transitions, 15489 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-02-02 09:16:10,524 INFO L231 Difference]: Finished difference. Result has 282 places, 527 transitions, 14086 flow [2024-02-02 09:16:10,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=13780, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14086, PETRI_PLACES=282, PETRI_TRANSITIONS=527} [2024-02-02 09:16:10,525 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 210 predicate places. [2024-02-02 09:16:10,525 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 527 transitions, 14086 flow [2024-02-02 09:16:10,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:10,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:10,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:10,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-02-02 09:16:10,526 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:16:10,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:10,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1256523921, now seen corresponding path program 2 times [2024-02-02 09:16:10,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:10,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240164901] [2024-02-02 09:16:10,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:10,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:10,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:10,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:10,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240164901] [2024-02-02 09:16:10,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240164901] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:10,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:10,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:16:10,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999313270] [2024-02-02 09:16:10,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:10,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:16:10,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:10,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:16:10,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:16:10,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:16:10,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 527 transitions, 14086 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:10,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:10,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:16:10,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:12,605 INFO L124 PetriNetUnfolderBase]: 2555/5059 cut-off events. [2024-02-02 09:16:12,605 INFO L125 PetriNetUnfolderBase]: For 255558/256153 co-relation queries the response was YES. [2024-02-02 09:16:12,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50763 conditions, 5059 events. 2555/5059 cut-off events. For 255558/256153 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 37708 event pairs, 451 based on Foata normal form. 79/5029 useless extension candidates. Maximal degree in co-relation 50632. Up to 2034 conditions per place. [2024-02-02 09:16:12,701 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 375 selfloop transitions, 161 changer transitions 2/578 dead transitions. [2024-02-02 09:16:12,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 578 transitions, 15895 flow [2024-02-02 09:16:12,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:16:12,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:16:12,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 216 transitions. [2024-02-02 09:16:12,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453781512605042 [2024-02-02 09:16:12,702 INFO L175 Difference]: Start difference. First operand has 282 places, 527 transitions, 14086 flow. Second operand 7 states and 216 transitions. [2024-02-02 09:16:12,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 578 transitions, 15895 flow [2024-02-02 09:16:13,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 578 transitions, 15769 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-02-02 09:16:13,913 INFO L231 Difference]: Finished difference. Result has 287 places, 527 transitions, 14289 flow [2024-02-02 09:16:13,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=13960, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14289, PETRI_PLACES=287, PETRI_TRANSITIONS=527} [2024-02-02 09:16:13,914 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 215 predicate places. [2024-02-02 09:16:13,914 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 527 transitions, 14289 flow [2024-02-02 09:16:13,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:13,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:13,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:13,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-02-02 09:16:13,915 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:16:13,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:13,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1640330695, now seen corresponding path program 2 times [2024-02-02 09:16:13,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:13,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201835780] [2024-02-02 09:16:13,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:13,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:14,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:14,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:14,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201835780] [2024-02-02 09:16:14,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201835780] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:14,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:14,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:16:14,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95995705] [2024-02-02 09:16:14,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:14,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:16:14,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:14,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:16:14,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:16:14,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:16:14,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 527 transitions, 14289 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:14,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:14,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:16:14,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:15,852 INFO L124 PetriNetUnfolderBase]: 2643/5279 cut-off events. [2024-02-02 09:16:15,853 INFO L125 PetriNetUnfolderBase]: For 277806/278510 co-relation queries the response was YES. [2024-02-02 09:16:15,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52957 conditions, 5279 events. 2643/5279 cut-off events. For 277806/278510 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 40556 event pairs, 970 based on Foata normal form. 121/5293 useless extension candidates. Maximal degree in co-relation 52825. Up to 2564 conditions per place. [2024-02-02 09:16:15,964 INFO L140 encePairwiseOnDemand]: 52/68 looper letters, 362 selfloop transitions, 181 changer transitions 5/588 dead transitions. [2024-02-02 09:16:15,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 588 transitions, 16259 flow [2024-02-02 09:16:15,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:16:15,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:16:15,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 225 transitions. [2024-02-02 09:16:15,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4726890756302521 [2024-02-02 09:16:15,965 INFO L175 Difference]: Start difference. First operand has 287 places, 527 transitions, 14289 flow. Second operand 7 states and 225 transitions. [2024-02-02 09:16:15,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 588 transitions, 16259 flow [2024-02-02 09:16:17,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 588 transitions, 15964 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-02-02 09:16:17,242 INFO L231 Difference]: Finished difference. Result has 292 places, 536 transitions, 14706 flow [2024-02-02 09:16:17,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=14002, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14706, PETRI_PLACES=292, PETRI_TRANSITIONS=536} [2024-02-02 09:16:17,243 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 220 predicate places. [2024-02-02 09:16:17,243 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 536 transitions, 14706 flow [2024-02-02 09:16:17,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:17,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:17,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:17,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-02-02 09:16:17,244 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:16:17,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:17,244 INFO L85 PathProgramCache]: Analyzing trace with hash -2053496559, now seen corresponding path program 3 times [2024-02-02 09:16:17,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:17,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792140557] [2024-02-02 09:16:17,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:17,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:17,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:17,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:17,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:17,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792140557] [2024-02-02 09:16:17,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792140557] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:17,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:17,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:16:17,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043032815] [2024-02-02 09:16:17,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:17,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:16:17,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:17,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:16:17,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:16:17,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:16:17,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 536 transitions, 14706 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:17,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:17,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:16:17,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:19,459 INFO L124 PetriNetUnfolderBase]: 2671/5387 cut-off events. [2024-02-02 09:16:19,459 INFO L125 PetriNetUnfolderBase]: For 286997/287733 co-relation queries the response was YES. [2024-02-02 09:16:19,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55186 conditions, 5387 events. 2671/5387 cut-off events. For 286997/287733 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 42055 event pairs, 933 based on Foata normal form. 113/5384 useless extension candidates. Maximal degree in co-relation 55051. Up to 2587 conditions per place. [2024-02-02 09:16:19,547 INFO L140 encePairwiseOnDemand]: 53/68 looper letters, 331 selfloop transitions, 216 changer transitions 5/592 dead transitions. [2024-02-02 09:16:19,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 592 transitions, 16575 flow [2024-02-02 09:16:19,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:16:19,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:16:19,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 220 transitions. [2024-02-02 09:16:19,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46218487394957986 [2024-02-02 09:16:19,549 INFO L175 Difference]: Start difference. First operand has 292 places, 536 transitions, 14706 flow. Second operand 7 states and 220 transitions. [2024-02-02 09:16:19,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 592 transitions, 16575 flow [2024-02-02 09:16:20,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 592 transitions, 16414 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-02-02 09:16:20,773 INFO L231 Difference]: Finished difference. Result has 298 places, 548 transitions, 15370 flow [2024-02-02 09:16:20,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=14557, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15370, PETRI_PLACES=298, PETRI_TRANSITIONS=548} [2024-02-02 09:16:20,774 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 226 predicate places. [2024-02-02 09:16:20,774 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 548 transitions, 15370 flow [2024-02-02 09:16:20,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:20,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:20,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:20,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-02-02 09:16:20,775 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:16:20,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:20,775 INFO L85 PathProgramCache]: Analyzing trace with hash -2052422409, now seen corresponding path program 4 times [2024-02-02 09:16:20,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:20,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496664363] [2024-02-02 09:16:20,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:20,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:20,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:20,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:20,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:20,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496664363] [2024-02-02 09:16:20,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496664363] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:20,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:20,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:16:20,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330292620] [2024-02-02 09:16:20,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:20,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:16:20,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:20,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:16:20,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:16:20,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:16:20,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 548 transitions, 15370 flow. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:20,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:20,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:16:20,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:22,847 INFO L124 PetriNetUnfolderBase]: 2660/5391 cut-off events. [2024-02-02 09:16:22,848 INFO L125 PetriNetUnfolderBase]: For 303305/304056 co-relation queries the response was YES. [2024-02-02 09:16:22,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57078 conditions, 5391 events. 2660/5391 cut-off events. For 303305/304056 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 42074 event pairs, 1012 based on Foata normal form. 95/5370 useless extension candidates. Maximal degree in co-relation 56940. Up to 2586 conditions per place. [2024-02-02 09:16:22,959 INFO L140 encePairwiseOnDemand]: 53/68 looper letters, 328 selfloop transitions, 217 changer transitions 3/588 dead transitions. [2024-02-02 09:16:22,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 588 transitions, 16994 flow [2024-02-02 09:16:22,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:16:22,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:16:22,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 215 transitions. [2024-02-02 09:16:22,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45168067226890757 [2024-02-02 09:16:22,960 INFO L175 Difference]: Start difference. First operand has 298 places, 548 transitions, 15370 flow. Second operand 7 states and 215 transitions. [2024-02-02 09:16:22,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 588 transitions, 16994 flow [2024-02-02 09:16:24,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 588 transitions, 16597 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-02-02 09:16:24,378 INFO L231 Difference]: Finished difference. Result has 294 places, 551 transitions, 15513 flow [2024-02-02 09:16:24,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=14949, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15513, PETRI_PLACES=294, PETRI_TRANSITIONS=551} [2024-02-02 09:16:24,379 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 222 predicate places. [2024-02-02 09:16:24,379 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 551 transitions, 15513 flow [2024-02-02 09:16:24,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:24,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:24,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:24,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-02-02 09:16:24,379 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:16:24,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:24,380 INFO L85 PathProgramCache]: Analyzing trace with hash 444946641, now seen corresponding path program 3 times [2024-02-02 09:16:24,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:24,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508975121] [2024-02-02 09:16:24,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:24,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:24,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:24,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:24,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:24,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508975121] [2024-02-02 09:16:24,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508975121] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:24,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:24,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:16:24,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466370226] [2024-02-02 09:16:24,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:24,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:16:24,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:24,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:16:24,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:16:24,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:16:24,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 551 transitions, 15513 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:24,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:24,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:16:24,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:26,399 INFO L124 PetriNetUnfolderBase]: 2619/5350 cut-off events. [2024-02-02 09:16:26,399 INFO L125 PetriNetUnfolderBase]: For 307066/307808 co-relation queries the response was YES. [2024-02-02 09:16:26,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57187 conditions, 5350 events. 2619/5350 cut-off events. For 307066/307808 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 42003 event pairs, 703 based on Foata normal form. 127/5366 useless extension candidates. Maximal degree in co-relation 57055. Up to 2312 conditions per place. [2024-02-02 09:16:26,506 INFO L140 encePairwiseOnDemand]: 53/68 looper letters, 363 selfloop transitions, 190 changer transitions 2/595 dead transitions. [2024-02-02 09:16:26,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 595 transitions, 17336 flow [2024-02-02 09:16:26,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:16:26,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:16:26,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 216 transitions. [2024-02-02 09:16:26,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453781512605042 [2024-02-02 09:16:26,508 INFO L175 Difference]: Start difference. First operand has 294 places, 551 transitions, 15513 flow. Second operand 7 states and 216 transitions. [2024-02-02 09:16:26,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 595 transitions, 17336 flow [2024-02-02 09:16:27,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 595 transitions, 17011 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-02-02 09:16:27,720 INFO L231 Difference]: Finished difference. Result has 297 places, 551 transitions, 15578 flow [2024-02-02 09:16:27,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=15188, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15578, PETRI_PLACES=297, PETRI_TRANSITIONS=551} [2024-02-02 09:16:27,721 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 225 predicate places. [2024-02-02 09:16:27,721 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 551 transitions, 15578 flow [2024-02-02 09:16:27,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:27,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:27,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:27,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-02-02 09:16:27,721 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:16:27,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:27,722 INFO L85 PathProgramCache]: Analyzing trace with hash -99716765, now seen corresponding path program 4 times [2024-02-02 09:16:27,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:27,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590742378] [2024-02-02 09:16:27,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:27,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:27,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:27,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:27,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:27,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590742378] [2024-02-02 09:16:27,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590742378] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:27,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:27,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:16:27,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266671675] [2024-02-02 09:16:27,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:27,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:16:27,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:27,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:16:27,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:16:27,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:16:27,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 551 transitions, 15578 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:27,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:27,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:16:27,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:29,568 INFO L124 PetriNetUnfolderBase]: 2626/5367 cut-off events. [2024-02-02 09:16:29,569 INFO L125 PetriNetUnfolderBase]: For 307725/308448 co-relation queries the response was YES. [2024-02-02 09:16:29,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57679 conditions, 5367 events. 2626/5367 cut-off events. For 307725/308448 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 42153 event pairs, 677 based on Foata normal form. 117/5377 useless extension candidates. Maximal degree in co-relation 57546. Up to 2297 conditions per place. [2024-02-02 09:16:29,794 INFO L140 encePairwiseOnDemand]: 54/68 looper letters, 364 selfloop transitions, 200 changer transitions 2/606 dead transitions. [2024-02-02 09:16:29,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 606 transitions, 17711 flow [2024-02-02 09:16:29,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:16:29,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:16:29,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 223 transitions. [2024-02-02 09:16:29,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4684873949579832 [2024-02-02 09:16:29,795 INFO L175 Difference]: Start difference. First operand has 297 places, 551 transitions, 15578 flow. Second operand 7 states and 223 transitions. [2024-02-02 09:16:29,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 606 transitions, 17711 flow [2024-02-02 09:16:30,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 606 transitions, 17306 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-02-02 09:16:30,661 INFO L231 Difference]: Finished difference. Result has 298 places, 556 transitions, 15822 flow [2024-02-02 09:16:30,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=15183, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15822, PETRI_PLACES=298, PETRI_TRANSITIONS=556} [2024-02-02 09:16:30,661 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 226 predicate places. [2024-02-02 09:16:30,661 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 556 transitions, 15822 flow [2024-02-02 09:16:30,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:30,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:30,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:30,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-02-02 09:16:30,662 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:16:30,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:30,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1213482445, now seen corresponding path program 5 times [2024-02-02 09:16:30,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:30,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794372353] [2024-02-02 09:16:30,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:30,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:30,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:30,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:30,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:30,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794372353] [2024-02-02 09:16:30,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794372353] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:30,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:30,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:16:30,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458403071] [2024-02-02 09:16:30,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:30,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:16:30,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:30,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:16:30,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:16:30,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:16:30,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 556 transitions, 15822 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:30,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:30,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:16:30,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:32,310 INFO L124 PetriNetUnfolderBase]: 2637/5375 cut-off events. [2024-02-02 09:16:32,310 INFO L125 PetriNetUnfolderBase]: For 308691/309421 co-relation queries the response was YES. [2024-02-02 09:16:32,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58268 conditions, 5375 events. 2637/5375 cut-off events. For 308691/309421 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 42153 event pairs, 672 based on Foata normal form. 97/5361 useless extension candidates. Maximal degree in co-relation 58134. Up to 2302 conditions per place. [2024-02-02 09:16:32,388 INFO L140 encePairwiseOnDemand]: 54/68 looper letters, 362 selfloop transitions, 202 changer transitions 2/606 dead transitions. [2024-02-02 09:16:32,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 606 transitions, 17840 flow [2024-02-02 09:16:32,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:16:32,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:16:32,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 218 transitions. [2024-02-02 09:16:32,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4579831932773109 [2024-02-02 09:16:32,389 INFO L175 Difference]: Start difference. First operand has 298 places, 556 transitions, 15822 flow. Second operand 7 states and 218 transitions. [2024-02-02 09:16:32,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 606 transitions, 17840 flow [2024-02-02 09:16:33,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 606 transitions, 17569 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-02-02 09:16:33,375 INFO L231 Difference]: Finished difference. Result has 303 places, 562 transitions, 16214 flow [2024-02-02 09:16:33,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=15556, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16214, PETRI_PLACES=303, PETRI_TRANSITIONS=562} [2024-02-02 09:16:33,376 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 231 predicate places. [2024-02-02 09:16:33,376 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 562 transitions, 16214 flow [2024-02-02 09:16:33,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:33,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:33,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:33,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-02-02 09:16:33,376 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:16:33,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:33,377 INFO L85 PathProgramCache]: Analyzing trace with hash 426426912, now seen corresponding path program 1 times [2024-02-02 09:16:33,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:33,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594701815] [2024-02-02 09:16:33,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:33,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:33,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:33,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:33,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:33,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594701815] [2024-02-02 09:16:33,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594701815] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:33,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:33,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:16:33,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810992491] [2024-02-02 09:16:33,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:33,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:16:33,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:33,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:16:33,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:16:33,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:16:33,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 562 transitions, 16214 flow. Second operand has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:33,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:33,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:16:33,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:35,157 INFO L124 PetriNetUnfolderBase]: 2660/5451 cut-off events. [2024-02-02 09:16:35,157 INFO L125 PetriNetUnfolderBase]: For 321428/322324 co-relation queries the response was YES. [2024-02-02 09:16:35,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59996 conditions, 5451 events. 2660/5451 cut-off events. For 321428/322324 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 42772 event pairs, 1035 based on Foata normal form. 77/5417 useless extension candidates. Maximal degree in co-relation 59860. Up to 2679 conditions per place. [2024-02-02 09:16:35,226 INFO L140 encePairwiseOnDemand]: 53/68 looper letters, 380 selfloop transitions, 178 changer transitions 0/598 dead transitions. [2024-02-02 09:16:35,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 598 transitions, 17794 flow [2024-02-02 09:16:35,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:16:35,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:16:35,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 207 transitions. [2024-02-02 09:16:35,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43487394957983194 [2024-02-02 09:16:35,227 INFO L175 Difference]: Start difference. First operand has 303 places, 562 transitions, 16214 flow. Second operand 7 states and 207 transitions. [2024-02-02 09:16:35,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 598 transitions, 17794 flow [2024-02-02 09:16:36,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 598 transitions, 17471 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-02-02 09:16:36,262 INFO L231 Difference]: Finished difference. Result has 304 places, 564 transitions, 16312 flow [2024-02-02 09:16:36,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=15895, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16312, PETRI_PLACES=304, PETRI_TRANSITIONS=564} [2024-02-02 09:16:36,262 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 232 predicate places. [2024-02-02 09:16:36,262 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 564 transitions, 16312 flow [2024-02-02 09:16:36,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:36,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:36,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:36,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-02-02 09:16:36,263 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:16:36,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:36,263 INFO L85 PathProgramCache]: Analyzing trace with hash 699149046, now seen corresponding path program 2 times [2024-02-02 09:16:36,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:36,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32873689] [2024-02-02 09:16:36,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:36,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:36,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:36,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:36,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:36,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32873689] [2024-02-02 09:16:36,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32873689] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:36,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:36,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:16:36,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064430201] [2024-02-02 09:16:36,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:36,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:16:36,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:36,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:16:36,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:16:36,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:16:36,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 564 transitions, 16312 flow. Second operand has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:36,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:36,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:16:36,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:38,430 INFO L124 PetriNetUnfolderBase]: 2662/5483 cut-off events. [2024-02-02 09:16:38,430 INFO L125 PetriNetUnfolderBase]: For 320014/320927 co-relation queries the response was YES. [2024-02-02 09:16:38,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60100 conditions, 5483 events. 2662/5483 cut-off events. For 320014/320927 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 43341 event pairs, 1031 based on Foata normal form. 71/5437 useless extension candidates. Maximal degree in co-relation 59965. Up to 2685 conditions per place. [2024-02-02 09:16:38,514 INFO L140 encePairwiseOnDemand]: 54/68 looper letters, 384 selfloop transitions, 189 changer transitions 0/613 dead transitions. [2024-02-02 09:16:38,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 613 transitions, 18127 flow [2024-02-02 09:16:38,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:16:38,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:16:38,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 218 transitions. [2024-02-02 09:16:38,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4579831932773109 [2024-02-02 09:16:38,515 INFO L175 Difference]: Start difference. First operand has 304 places, 564 transitions, 16312 flow. Second operand 7 states and 218 transitions. [2024-02-02 09:16:38,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 613 transitions, 18127 flow [2024-02-02 09:16:39,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 613 transitions, 17785 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-02-02 09:16:39,502 INFO L231 Difference]: Finished difference. Result has 306 places, 566 transitions, 16408 flow [2024-02-02 09:16:39,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=15976, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16408, PETRI_PLACES=306, PETRI_TRANSITIONS=566} [2024-02-02 09:16:39,503 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 234 predicate places. [2024-02-02 09:16:39,503 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 566 transitions, 16408 flow [2024-02-02 09:16:39,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:39,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:39,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:39,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-02-02 09:16:39,503 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:16:39,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:39,504 INFO L85 PathProgramCache]: Analyzing trace with hash 2087994248, now seen corresponding path program 3 times [2024-02-02 09:16:39,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:39,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834572234] [2024-02-02 09:16:39,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:39,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:39,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:39,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:39,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:39,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834572234] [2024-02-02 09:16:39,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834572234] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:39,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:39,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:16:39,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849247432] [2024-02-02 09:16:39,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:39,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:16:39,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:39,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:16:39,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:16:39,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:16:39,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 566 transitions, 16408 flow. Second operand has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:39,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:39,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:16:39,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:41,354 INFO L124 PetriNetUnfolderBase]: 2664/5489 cut-off events. [2024-02-02 09:16:41,354 INFO L125 PetriNetUnfolderBase]: For 318938/319851 co-relation queries the response was YES. [2024-02-02 09:16:41,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60097 conditions, 5489 events. 2664/5489 cut-off events. For 318938/319851 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 43409 event pairs, 977 based on Foata normal form. 77/5449 useless extension candidates. Maximal degree in co-relation 59962. Up to 2693 conditions per place. [2024-02-02 09:16:41,474 INFO L140 encePairwiseOnDemand]: 54/68 looper letters, 388 selfloop transitions, 179 changer transitions 0/607 dead transitions. [2024-02-02 09:16:41,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 607 transitions, 18040 flow [2024-02-02 09:16:41,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:16:41,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:16:41,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 211 transitions. [2024-02-02 09:16:41,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4432773109243697 [2024-02-02 09:16:41,475 INFO L175 Difference]: Start difference. First operand has 306 places, 566 transitions, 16408 flow. Second operand 7 states and 211 transitions. [2024-02-02 09:16:41,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 607 transitions, 18040 flow [2024-02-02 09:16:42,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 607 transitions, 17671 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-02-02 09:16:42,586 INFO L231 Difference]: Finished difference. Result has 303 places, 568 transitions, 16497 flow [2024-02-02 09:16:42,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=16015, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16497, PETRI_PLACES=303, PETRI_TRANSITIONS=568} [2024-02-02 09:16:42,586 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 231 predicate places. [2024-02-02 09:16:42,586 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 568 transitions, 16497 flow [2024-02-02 09:16:42,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:42,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:42,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:42,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-02-02 09:16:42,587 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:16:42,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:42,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1904634216, now seen corresponding path program 1 times [2024-02-02 09:16:42,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:42,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325179801] [2024-02-02 09:16:42,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:42,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:42,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:42,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:42,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:42,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325179801] [2024-02-02 09:16:42,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325179801] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:42,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:42,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:16:42,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541261854] [2024-02-02 09:16:42,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:42,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-02 09:16:42,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:42,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-02 09:16:42,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-02 09:16:42,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:16:42,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 568 transitions, 16497 flow. Second operand has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:42,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:42,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:16:42,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:44,109 INFO L124 PetriNetUnfolderBase]: 2058/4515 cut-off events. [2024-02-02 09:16:44,110 INFO L125 PetriNetUnfolderBase]: For 297216/298401 co-relation queries the response was YES. [2024-02-02 09:16:44,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50936 conditions, 4515 events. 2058/4515 cut-off events. For 297216/298401 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 37814 event pairs, 505 based on Foata normal form. 92/4398 useless extension candidates. Maximal degree in co-relation 50805. Up to 1912 conditions per place. [2024-02-02 09:16:44,170 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 336 selfloop transitions, 187 changer transitions 2/603 dead transitions. [2024-02-02 09:16:44,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 603 transitions, 18170 flow [2024-02-02 09:16:44,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:16:44,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:16:44,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 234 transitions. [2024-02-02 09:16:44,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5735294117647058 [2024-02-02 09:16:44,171 INFO L175 Difference]: Start difference. First operand has 303 places, 568 transitions, 16497 flow. Second operand 6 states and 234 transitions. [2024-02-02 09:16:44,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 603 transitions, 18170 flow [2024-02-02 09:16:44,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 603 transitions, 17881 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-02-02 09:16:44,993 INFO L231 Difference]: Finished difference. Result has 305 places, 568 transitions, 16593 flow [2024-02-02 09:16:44,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=16208, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=16593, PETRI_PLACES=305, PETRI_TRANSITIONS=568} [2024-02-02 09:16:44,994 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 233 predicate places. [2024-02-02 09:16:44,994 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 568 transitions, 16593 flow [2024-02-02 09:16:44,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:44,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:44,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:44,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-02-02 09:16:44,994 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:16:44,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:44,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1027344488, now seen corresponding path program 2 times [2024-02-02 09:16:44,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:44,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040610812] [2024-02-02 09:16:44,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:44,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:45,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:45,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:45,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:45,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040610812] [2024-02-02 09:16:45,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040610812] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:45,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:45,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:16:45,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510239442] [2024-02-02 09:16:45,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:45,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-02 09:16:45,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:45,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-02 09:16:45,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-02 09:16:45,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:16:45,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 568 transitions, 16593 flow. Second operand has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:45,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:45,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:16:45,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:46,402 INFO L124 PetriNetUnfolderBase]: 2044/4469 cut-off events. [2024-02-02 09:16:46,402 INFO L125 PetriNetUnfolderBase]: For 296830/297958 co-relation queries the response was YES. [2024-02-02 09:16:46,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50740 conditions, 4469 events. 2044/4469 cut-off events. For 296830/297958 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 37049 event pairs, 358 based on Foata normal form. 78/4307 useless extension candidates. Maximal degree in co-relation 50608. Up to 1911 conditions per place. [2024-02-02 09:16:46,463 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 352 selfloop transitions, 162 changer transitions 2/594 dead transitions. [2024-02-02 09:16:46,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 594 transitions, 18012 flow [2024-02-02 09:16:46,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:16:46,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:16:46,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 224 transitions. [2024-02-02 09:16:46,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5490196078431373 [2024-02-02 09:16:46,464 INFO L175 Difference]: Start difference. First operand has 305 places, 568 transitions, 16593 flow. Second operand 6 states and 224 transitions. [2024-02-02 09:16:46,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 594 transitions, 18012 flow [2024-02-02 09:16:47,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 594 transitions, 17614 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-02-02 09:16:47,280 INFO L231 Difference]: Finished difference. Result has 307 places, 572 transitions, 16672 flow [2024-02-02 09:16:47,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=16195, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=16672, PETRI_PLACES=307, PETRI_TRANSITIONS=572} [2024-02-02 09:16:47,280 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 235 predicate places. [2024-02-02 09:16:47,280 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 572 transitions, 16672 flow [2024-02-02 09:16:47,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:47,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:47,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:47,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-02-02 09:16:47,281 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:16:47,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:47,281 INFO L85 PathProgramCache]: Analyzing trace with hash -410466536, now seen corresponding path program 3 times [2024-02-02 09:16:47,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:47,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757552619] [2024-02-02 09:16:47,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:47,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:47,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:47,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:47,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:47,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757552619] [2024-02-02 09:16:47,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757552619] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:47,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:47,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:16:47,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833013519] [2024-02-02 09:16:47,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:47,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-02 09:16:47,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:47,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-02 09:16:47,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-02 09:16:47,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:16:47,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 572 transitions, 16672 flow. Second operand has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:47,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:47,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:16:47,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:48,813 INFO L124 PetriNetUnfolderBase]: 2135/4648 cut-off events. [2024-02-02 09:16:48,813 INFO L125 PetriNetUnfolderBase]: For 303112/304331 co-relation queries the response was YES. [2024-02-02 09:16:48,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52467 conditions, 4648 events. 2135/4648 cut-off events. For 303112/304331 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 38843 event pairs, 523 based on Foata normal form. 83/4531 useless extension candidates. Maximal degree in co-relation 52333. Up to 1940 conditions per place. [2024-02-02 09:16:48,880 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 357 selfloop transitions, 180 changer transitions 2/617 dead transitions. [2024-02-02 09:16:48,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 617 transitions, 18552 flow [2024-02-02 09:16:48,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:16:48,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:16:48,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 236 transitions. [2024-02-02 09:16:48,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5784313725490197 [2024-02-02 09:16:48,881 INFO L175 Difference]: Start difference. First operand has 307 places, 572 transitions, 16672 flow. Second operand 6 states and 236 transitions. [2024-02-02 09:16:48,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 617 transitions, 18552 flow [2024-02-02 09:16:49,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 617 transitions, 18233 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-02-02 09:16:50,004 INFO L231 Difference]: Finished difference. Result has 311 places, 577 transitions, 16845 flow [2024-02-02 09:16:50,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=16362, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=16845, PETRI_PLACES=311, PETRI_TRANSITIONS=577} [2024-02-02 09:16:50,005 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 239 predicate places. [2024-02-02 09:16:50,005 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 577 transitions, 16845 flow [2024-02-02 09:16:50,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:50,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:50,006 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] [2024-02-02 09:16:50,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-02-02 09:16:50,006 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:16:50,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:50,006 INFO L85 PathProgramCache]: Analyzing trace with hash -340269764, now seen corresponding path program 4 times [2024-02-02 09:16:50,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:50,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378780629] [2024-02-02 09:16:50,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:50,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:50,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:50,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:50,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:50,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378780629] [2024-02-02 09:16:50,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378780629] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:50,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:50,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:16:50,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237889106] [2024-02-02 09:16:50,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:50,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-02 09:16:50,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:50,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-02 09:16:50,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-02 09:16:50,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:16:50,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 577 transitions, 16845 flow. Second operand has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:50,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:50,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:16:50,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:51,717 INFO L124 PetriNetUnfolderBase]: 2167/4707 cut-off events. [2024-02-02 09:16:51,718 INFO L125 PetriNetUnfolderBase]: For 310854/312088 co-relation queries the response was YES. [2024-02-02 09:16:51,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52864 conditions, 4707 events. 2167/4707 cut-off events. For 310854/312088 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 39373 event pairs, 517 based on Foata normal form. 70/4577 useless extension candidates. Maximal degree in co-relation 52727. Up to 1952 conditions per place. [2024-02-02 09:16:51,795 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 342 selfloop transitions, 195 changer transitions 2/617 dead transitions. [2024-02-02 09:16:51,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 617 transitions, 18577 flow [2024-02-02 09:16:51,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:16:51,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:16:51,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 236 transitions. [2024-02-02 09:16:51,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5784313725490197 [2024-02-02 09:16:51,796 INFO L175 Difference]: Start difference. First operand has 311 places, 577 transitions, 16845 flow. Second operand 6 states and 236 transitions. [2024-02-02 09:16:51,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 617 transitions, 18577 flow [2024-02-02 09:16:52,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 617 transitions, 18367 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-02-02 09:16:52,754 INFO L231 Difference]: Finished difference. Result has 316 places, 580 transitions, 17182 flow [2024-02-02 09:16:52,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=16637, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=17182, PETRI_PLACES=316, PETRI_TRANSITIONS=580} [2024-02-02 09:16:52,755 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 244 predicate places. [2024-02-02 09:16:52,755 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 580 transitions, 17182 flow [2024-02-02 09:16:52,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:52,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:52,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:52,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-02-02 09:16:52,755 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:16:52,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:52,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1312456280, now seen corresponding path program 5 times [2024-02-02 09:16:52,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:52,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079363847] [2024-02-02 09:16:52,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:52,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:52,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:52,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:52,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:52,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079363847] [2024-02-02 09:16:52,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079363847] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:52,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:52,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:16:52,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406765583] [2024-02-02 09:16:52,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:52,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-02 09:16:52,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:52,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-02 09:16:52,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-02 09:16:52,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:16:52,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 580 transitions, 17182 flow. Second operand has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:52,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:52,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:16:52,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:54,461 INFO L124 PetriNetUnfolderBase]: 2145/4654 cut-off events. [2024-02-02 09:16:54,461 INFO L125 PetriNetUnfolderBase]: For 324372/325598 co-relation queries the response was YES. [2024-02-02 09:16:54,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52867 conditions, 4654 events. 2145/4654 cut-off events. For 324372/325598 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 38893 event pairs, 505 based on Foata normal form. 93/4509 useless extension candidates. Maximal degree in co-relation 52727. Up to 1954 conditions per place. [2024-02-02 09:16:54,528 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 355 selfloop transitions, 183 changer transitions 2/618 dead transitions. [2024-02-02 09:16:54,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 618 transitions, 18931 flow [2024-02-02 09:16:54,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:16:54,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:16:54,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 234 transitions. [2024-02-02 09:16:54,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5735294117647058 [2024-02-02 09:16:54,529 INFO L175 Difference]: Start difference. First operand has 316 places, 580 transitions, 17182 flow. Second operand 6 states and 234 transitions. [2024-02-02 09:16:54,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 618 transitions, 18931 flow [2024-02-02 09:16:55,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 618 transitions, 18596 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-02-02 09:16:55,454 INFO L231 Difference]: Finished difference. Result has 319 places, 580 transitions, 17220 flow [2024-02-02 09:16:55,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=16847, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=17220, PETRI_PLACES=319, PETRI_TRANSITIONS=580} [2024-02-02 09:16:55,454 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 247 predicate places. [2024-02-02 09:16:55,454 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 580 transitions, 17220 flow [2024-02-02 09:16:55,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:55,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:55,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:55,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-02-02 09:16:55,455 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:16:55,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:55,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1044609112, now seen corresponding path program 1 times [2024-02-02 09:16:55,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:55,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797038911] [2024-02-02 09:16:55,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:55,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:55,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:55,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:55,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:55,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797038911] [2024-02-02 09:16:55,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797038911] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:55,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:55,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:16:55,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679262693] [2024-02-02 09:16:55,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:55,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-02 09:16:55,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:55,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-02 09:16:55,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-02 09:16:55,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:16:55,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 580 transitions, 17220 flow. Second operand has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:55,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:55,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:16:55,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:16:57,292 INFO L124 PetriNetUnfolderBase]: 2141/4646 cut-off events. [2024-02-02 09:16:57,293 INFO L125 PetriNetUnfolderBase]: For 319876/321072 co-relation queries the response was YES. [2024-02-02 09:16:57,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52823 conditions, 4646 events. 2141/4646 cut-off events. For 319876/321072 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 38780 event pairs, 491 based on Foata normal form. 81/4489 useless extension candidates. Maximal degree in co-relation 52682. Up to 1958 conditions per place. [2024-02-02 09:16:57,384 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 335 selfloop transitions, 198 changer transitions 2/613 dead transitions. [2024-02-02 09:16:57,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 613 transitions, 18836 flow [2024-02-02 09:16:57,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:16:57,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:16:57,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 231 transitions. [2024-02-02 09:16:57,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5661764705882353 [2024-02-02 09:16:57,385 INFO L175 Difference]: Start difference. First operand has 319 places, 580 transitions, 17220 flow. Second operand 6 states and 231 transitions. [2024-02-02 09:16:57,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 613 transitions, 18836 flow [2024-02-02 09:16:58,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 613 transitions, 18512 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-02-02 09:16:58,426 INFO L231 Difference]: Finished difference. Result has 322 places, 581 transitions, 17326 flow [2024-02-02 09:16:58,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=16898, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=17326, PETRI_PLACES=322, PETRI_TRANSITIONS=581} [2024-02-02 09:16:58,426 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 250 predicate places. [2024-02-02 09:16:58,427 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 581 transitions, 17326 flow [2024-02-02 09:16:58,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:58,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:16:58,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:16:58,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-02-02 09:16:58,427 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:16:58,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:16:58,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1081801598, now seen corresponding path program 1 times [2024-02-02 09:16:58,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:16:58,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464856896] [2024-02-02 09:16:58,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:16:58,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:16:58,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:16:58,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:16:58,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:16:58,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464856896] [2024-02-02 09:16:58,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464856896] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:16:58,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:16:58,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:16:58,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039559703] [2024-02-02 09:16:58,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:16:58,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:16:58,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:16:58,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:16:58,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:16:58,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:16:58,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 581 transitions, 17326 flow. Second operand has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:16:58,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:16:58,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:16:58,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:00,775 INFO L124 PetriNetUnfolderBase]: 2698/5506 cut-off events. [2024-02-02 09:17:00,775 INFO L125 PetriNetUnfolderBase]: For 337578/338275 co-relation queries the response was YES. [2024-02-02 09:17:00,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60513 conditions, 5506 events. 2698/5506 cut-off events. For 337578/338275 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 43368 event pairs, 822 based on Foata normal form. 75/5457 useless extension candidates. Maximal degree in co-relation 60370. Up to 3162 conditions per place. [2024-02-02 09:17:00,889 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 460 selfloop transitions, 119 changer transitions 0/620 dead transitions. [2024-02-02 09:17:00,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 620 transitions, 18995 flow [2024-02-02 09:17:00,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:17:00,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:17:00,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 217 transitions. [2024-02-02 09:17:00,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39889705882352944 [2024-02-02 09:17:00,890 INFO L175 Difference]: Start difference. First operand has 322 places, 581 transitions, 17326 flow. Second operand 8 states and 217 transitions. [2024-02-02 09:17:00,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 620 transitions, 18995 flow [2024-02-02 09:17:02,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 620 transitions, 18649 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-02-02 09:17:02,536 INFO L231 Difference]: Finished difference. Result has 327 places, 582 transitions, 17249 flow [2024-02-02 09:17:02,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=16980, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17249, PETRI_PLACES=327, PETRI_TRANSITIONS=582} [2024-02-02 09:17:02,537 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 255 predicate places. [2024-02-02 09:17:02,537 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 582 transitions, 17249 flow [2024-02-02 09:17:02,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:02,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:02,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:02,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-02-02 09:17:02,538 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:17:02,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:02,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1990723300, now seen corresponding path program 2 times [2024-02-02 09:17:02,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:02,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429376307] [2024-02-02 09:17:02,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:02,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:02,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:02,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:02,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:02,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429376307] [2024-02-02 09:17:02,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429376307] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:02,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:02,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:17:02,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441280572] [2024-02-02 09:17:02,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:02,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:17:02,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:02,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:17:02,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:17:02,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:17:02,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 582 transitions, 17249 flow. Second operand has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:02,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:02,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:17:02,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:04,513 INFO L124 PetriNetUnfolderBase]: 2693/5511 cut-off events. [2024-02-02 09:17:04,513 INFO L125 PetriNetUnfolderBase]: For 329309/330011 co-relation queries the response was YES. [2024-02-02 09:17:04,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60146 conditions, 5511 events. 2693/5511 cut-off events. For 329309/330011 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 43563 event pairs, 808 based on Foata normal form. 77/5464 useless extension candidates. Maximal degree in co-relation 60002. Up to 3198 conditions per place. [2024-02-02 09:17:04,594 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 455 selfloop transitions, 123 changer transitions 0/619 dead transitions. [2024-02-02 09:17:04,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 619 transitions, 18946 flow [2024-02-02 09:17:04,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:17:04,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:17:04,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 197 transitions. [2024-02-02 09:17:04,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41386554621848737 [2024-02-02 09:17:04,595 INFO L175 Difference]: Start difference. First operand has 327 places, 582 transitions, 17249 flow. Second operand 7 states and 197 transitions. [2024-02-02 09:17:04,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 619 transitions, 18946 flow [2024-02-02 09:17:05,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 619 transitions, 18585 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-02-02 09:17:05,759 INFO L231 Difference]: Finished difference. Result has 328 places, 582 transitions, 17142 flow [2024-02-02 09:17:05,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=16888, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17142, PETRI_PLACES=328, PETRI_TRANSITIONS=582} [2024-02-02 09:17:05,760 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 256 predicate places. [2024-02-02 09:17:05,760 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 582 transitions, 17142 flow [2024-02-02 09:17:05,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:05,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:05,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:05,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-02-02 09:17:05,760 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:17:05,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:05,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1522112372, now seen corresponding path program 2 times [2024-02-02 09:17:05,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:05,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176623241] [2024-02-02 09:17:05,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:05,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:05,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:05,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:05,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:05,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176623241] [2024-02-02 09:17:05,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176623241] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:05,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:05,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:17:05,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636950858] [2024-02-02 09:17:05,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:05,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-02 09:17:05,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:05,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-02 09:17:05,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-02 09:17:05,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:17:05,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 582 transitions, 17142 flow. Second operand has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:05,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:05,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:17:05,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:07,679 INFO L124 PetriNetUnfolderBase]: 2113/4638 cut-off events. [2024-02-02 09:17:07,679 INFO L125 PetriNetUnfolderBase]: For 301728/302880 co-relation queries the response was YES. [2024-02-02 09:17:07,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51992 conditions, 4638 events. 2113/4638 cut-off events. For 301728/302880 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 38594 event pairs, 499 based on Foata normal form. 74/4548 useless extension candidates. Maximal degree in co-relation 51848. Up to 1951 conditions per place. [2024-02-02 09:17:07,773 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 342 selfloop transitions, 194 changer transitions 2/616 dead transitions. [2024-02-02 09:17:07,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 616 transitions, 18716 flow [2024-02-02 09:17:07,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:17:07,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:17:07,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 237 transitions. [2024-02-02 09:17:07,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5808823529411765 [2024-02-02 09:17:07,775 INFO L175 Difference]: Start difference. First operand has 328 places, 582 transitions, 17142 flow. Second operand 6 states and 237 transitions. [2024-02-02 09:17:07,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 616 transitions, 18716 flow [2024-02-02 09:17:09,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 616 transitions, 18449 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-02-02 09:17:09,105 INFO L231 Difference]: Finished difference. Result has 328 places, 582 transitions, 17274 flow [2024-02-02 09:17:09,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=16875, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=17274, PETRI_PLACES=328, PETRI_TRANSITIONS=582} [2024-02-02 09:17:09,105 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 256 predicate places. [2024-02-02 09:17:09,105 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 582 transitions, 17274 flow [2024-02-02 09:17:09,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:09,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:09,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:09,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-02-02 09:17:09,106 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:17:09,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:09,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1969305960, now seen corresponding path program 3 times [2024-02-02 09:17:09,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:09,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846997756] [2024-02-02 09:17:09,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:09,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:09,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:09,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:09,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:09,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846997756] [2024-02-02 09:17:09,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846997756] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:09,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:09,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:17:09,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441708916] [2024-02-02 09:17:09,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:09,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-02 09:17:09,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:09,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-02 09:17:09,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-02 09:17:09,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-02-02 09:17:09,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 582 transitions, 17274 flow. Second operand has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:09,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:09,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-02-02 09:17:09,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:10,866 INFO L124 PetriNetUnfolderBase]: 2101/4552 cut-off events. [2024-02-02 09:17:10,866 INFO L125 PetriNetUnfolderBase]: For 307524/308661 co-relation queries the response was YES. [2024-02-02 09:17:10,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51477 conditions, 4552 events. 2101/4552 cut-off events. For 307524/308661 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 37541 event pairs, 346 based on Foata normal form. 77/4387 useless extension candidates. Maximal degree in co-relation 51332. Up to 1941 conditions per place. [2024-02-02 09:17:10,936 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 354 selfloop transitions, 169 changer transitions 2/603 dead transitions. [2024-02-02 09:17:10,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 603 transitions, 18596 flow [2024-02-02 09:17:10,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:17:10,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:17:10,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 223 transitions. [2024-02-02 09:17:10,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5465686274509803 [2024-02-02 09:17:10,937 INFO L175 Difference]: Start difference. First operand has 328 places, 582 transitions, 17274 flow. Second operand 6 states and 223 transitions. [2024-02-02 09:17:10,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 603 transitions, 18596 flow [2024-02-02 09:17:11,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 603 transitions, 17909 flow, removed 0 selfloop flow, removed 20 redundant places. [2024-02-02 09:17:11,815 INFO L231 Difference]: Finished difference. Result has 312 places, 581 transitions, 16879 flow [2024-02-02 09:17:11,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=16541, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=16879, PETRI_PLACES=312, PETRI_TRANSITIONS=581} [2024-02-02 09:17:11,816 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 240 predicate places. [2024-02-02 09:17:11,816 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 581 transitions, 16879 flow [2024-02-02 09:17:11,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.166666666666668) internal successors, (169), 6 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:11,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:11,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:11,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-02-02 09:17:11,816 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:17:11,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:11,817 INFO L85 PathProgramCache]: Analyzing trace with hash -748301684, now seen corresponding path program 1 times [2024-02-02 09:17:11,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:11,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945420691] [2024-02-02 09:17:11,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:11,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:11,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:11,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:11,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:11,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945420691] [2024-02-02 09:17:11,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945420691] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:11,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:11,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:17:11,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143277806] [2024-02-02 09:17:11,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:11,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:17:11,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:11,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:17:11,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:17:11,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:17:11,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 581 transitions, 16879 flow. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:11,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:11,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:17:11,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:13,638 INFO L124 PetriNetUnfolderBase]: 2653/5424 cut-off events. [2024-02-02 09:17:13,638 INFO L125 PetriNetUnfolderBase]: For 313755/314651 co-relation queries the response was YES. [2024-02-02 09:17:13,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58611 conditions, 5424 events. 2653/5424 cut-off events. For 313755/314651 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 42753 event pairs, 438 based on Foata normal form. 76/5382 useless extension candidates. Maximal degree in co-relation 58482. Up to 2426 conditions per place. [2024-02-02 09:17:13,709 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 362 selfloop transitions, 217 changer transitions 2/621 dead transitions. [2024-02-02 09:17:13,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 621 transitions, 18634 flow [2024-02-02 09:17:13,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:17:13,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:17:13,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 212 transitions. [2024-02-02 09:17:13,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44537815126050423 [2024-02-02 09:17:13,710 INFO L175 Difference]: Start difference. First operand has 312 places, 581 transitions, 16879 flow. Second operand 7 states and 212 transitions. [2024-02-02 09:17:13,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 621 transitions, 18634 flow [2024-02-02 09:17:14,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 621 transitions, 18421 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-02 09:17:14,623 INFO L231 Difference]: Finished difference. Result has 316 places, 581 transitions, 17158 flow [2024-02-02 09:17:14,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=16666, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17158, PETRI_PLACES=316, PETRI_TRANSITIONS=581} [2024-02-02 09:17:14,624 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 244 predicate places. [2024-02-02 09:17:14,624 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 581 transitions, 17158 flow [2024-02-02 09:17:14,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:14,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:14,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:14,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-02-02 09:17:14,624 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:17:14,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:14,625 INFO L85 PathProgramCache]: Analyzing trace with hash 382658054, now seen corresponding path program 2 times [2024-02-02 09:17:14,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:14,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484080871] [2024-02-02 09:17:14,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:14,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:14,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:14,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:14,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:14,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484080871] [2024-02-02 09:17:14,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484080871] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:14,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:14,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:17:14,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528192135] [2024-02-02 09:17:14,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:14,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:17:14,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:14,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:17:14,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:17:14,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:17:14,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 581 transitions, 17158 flow. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:14,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:14,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:17:14,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:16,644 INFO L124 PetriNetUnfolderBase]: 2639/5398 cut-off events. [2024-02-02 09:17:16,644 INFO L125 PetriNetUnfolderBase]: For 325399/326295 co-relation queries the response was YES. [2024-02-02 09:17:16,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59096 conditions, 5398 events. 2639/5398 cut-off events. For 325399/326295 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 42546 event pairs, 441 based on Foata normal form. 72/5352 useless extension candidates. Maximal degree in co-relation 58966. Up to 2420 conditions per place. [2024-02-02 09:17:16,746 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 380 selfloop transitions, 198 changer transitions 2/620 dead transitions. [2024-02-02 09:17:16,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 620 transitions, 18899 flow [2024-02-02 09:17:16,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:17:16,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:17:16,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 210 transitions. [2024-02-02 09:17:16,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4411764705882353 [2024-02-02 09:17:16,747 INFO L175 Difference]: Start difference. First operand has 316 places, 581 transitions, 17158 flow. Second operand 7 states and 210 transitions. [2024-02-02 09:17:16,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 620 transitions, 18899 flow [2024-02-02 09:17:17,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 620 transitions, 18463 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-02-02 09:17:17,692 INFO L231 Difference]: Finished difference. Result has 317 places, 581 transitions, 17131 flow [2024-02-02 09:17:17,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=16722, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17131, PETRI_PLACES=317, PETRI_TRANSITIONS=581} [2024-02-02 09:17:17,693 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 245 predicate places. [2024-02-02 09:17:17,693 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 581 transitions, 17131 flow [2024-02-02 09:17:17,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:17,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:17,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:17,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-02-02 09:17:17,694 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:17:17,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:17,694 INFO L85 PathProgramCache]: Analyzing trace with hash 152075714, now seen corresponding path program 3 times [2024-02-02 09:17:17,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:17,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238462032] [2024-02-02 09:17:17,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:17,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:17,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:17,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:17,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:17,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238462032] [2024-02-02 09:17:17,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238462032] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:17,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:17,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:17:17,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971347432] [2024-02-02 09:17:17,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:17,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:17:17,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:17,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:17:17,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:17:17,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:17:17,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 581 transitions, 17131 flow. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:17,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:17,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:17:17,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:19,693 INFO L124 PetriNetUnfolderBase]: 2693/5510 cut-off events. [2024-02-02 09:17:19,693 INFO L125 PetriNetUnfolderBase]: For 330137/331003 co-relation queries the response was YES. [2024-02-02 09:17:19,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60158 conditions, 5510 events. 2693/5510 cut-off events. For 330137/331003 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 43522 event pairs, 401 based on Foata normal form. 76/5468 useless extension candidates. Maximal degree in co-relation 60028. Up to 2446 conditions per place. [2024-02-02 09:17:19,774 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 406 selfloop transitions, 179 changer transitions 2/627 dead transitions. [2024-02-02 09:17:19,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 627 transitions, 19199 flow [2024-02-02 09:17:19,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:17:19,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:17:19,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 202 transitions. [2024-02-02 09:17:19,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42436974789915966 [2024-02-02 09:17:19,775 INFO L175 Difference]: Start difference. First operand has 317 places, 581 transitions, 17131 flow. Second operand 7 states and 202 transitions. [2024-02-02 09:17:19,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 627 transitions, 19199 flow [2024-02-02 09:17:20,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 627 transitions, 18963 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-02 09:17:20,808 INFO L231 Difference]: Finished difference. Result has 321 places, 591 transitions, 17703 flow [2024-02-02 09:17:20,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=16909, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17703, PETRI_PLACES=321, PETRI_TRANSITIONS=591} [2024-02-02 09:17:20,808 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 249 predicate places. [2024-02-02 09:17:20,808 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 591 transitions, 17703 flow [2024-02-02 09:17:20,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:20,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:20,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:20,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-02-02 09:17:20,809 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:17:20,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:20,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1452805058, now seen corresponding path program 4 times [2024-02-02 09:17:20,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:20,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904848885] [2024-02-02 09:17:20,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:20,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:20,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:20,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:20,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:20,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904848885] [2024-02-02 09:17:20,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904848885] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:20,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:20,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:17:20,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478140195] [2024-02-02 09:17:20,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:20,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:17:20,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:20,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:17:20,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:17:20,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:17:20,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 591 transitions, 17703 flow. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:20,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:20,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:17:20,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:22,926 INFO L124 PetriNetUnfolderBase]: 2775/5626 cut-off events. [2024-02-02 09:17:22,926 INFO L125 PetriNetUnfolderBase]: For 347908/348840 co-relation queries the response was YES. [2024-02-02 09:17:23,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61828 conditions, 5626 events. 2775/5626 cut-off events. For 347908/348840 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 44175 event pairs, 482 based on Foata normal form. 76/5581 useless extension candidates. Maximal degree in co-relation 61696. Up to 2472 conditions per place. [2024-02-02 09:17:23,039 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 385 selfloop transitions, 206 changer transitions 2/633 dead transitions. [2024-02-02 09:17:23,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 633 transitions, 19525 flow [2024-02-02 09:17:23,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:17:23,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:17:23,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 207 transitions. [2024-02-02 09:17:23,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43487394957983194 [2024-02-02 09:17:23,040 INFO L175 Difference]: Start difference. First operand has 321 places, 591 transitions, 17703 flow. Second operand 7 states and 207 transitions. [2024-02-02 09:17:23,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 633 transitions, 19525 flow [2024-02-02 09:17:24,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 633 transitions, 19382 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:17:24,546 INFO L231 Difference]: Finished difference. Result has 327 places, 599 transitions, 18233 flow [2024-02-02 09:17:24,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=17564, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=18233, PETRI_PLACES=327, PETRI_TRANSITIONS=599} [2024-02-02 09:17:24,546 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 255 predicate places. [2024-02-02 09:17:24,546 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 599 transitions, 18233 flow [2024-02-02 09:17:24,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:24,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:24,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:24,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-02-02 09:17:24,547 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:17:24,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:24,547 INFO L85 PathProgramCache]: Analyzing trace with hash -357766202, now seen corresponding path program 5 times [2024-02-02 09:17:24,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:24,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270408181] [2024-02-02 09:17:24,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:24,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:24,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:24,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:24,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:24,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270408181] [2024-02-02 09:17:24,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270408181] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:24,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:24,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:17:24,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160780040] [2024-02-02 09:17:24,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:24,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:17:24,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:24,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:17:24,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:17:24,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:17:24,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 599 transitions, 18233 flow. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:24,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:24,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:17:24,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:26,643 INFO L124 PetriNetUnfolderBase]: 2745/5588 cut-off events. [2024-02-02 09:17:26,643 INFO L125 PetriNetUnfolderBase]: For 364319/365223 co-relation queries the response was YES. [2024-02-02 09:17:26,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62734 conditions, 5588 events. 2745/5588 cut-off events. For 364319/365223 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 44149 event pairs, 423 based on Foata normal form. 76/5546 useless extension candidates. Maximal degree in co-relation 62600. Up to 2462 conditions per place. [2024-02-02 09:17:26,736 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 416 selfloop transitions, 194 changer transitions 2/652 dead transitions. [2024-02-02 09:17:26,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 652 transitions, 20364 flow [2024-02-02 09:17:26,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:17:26,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:17:26,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 209 transitions. [2024-02-02 09:17:26,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43907563025210083 [2024-02-02 09:17:26,737 INFO L175 Difference]: Start difference. First operand has 327 places, 599 transitions, 18233 flow. Second operand 7 states and 209 transitions. [2024-02-02 09:17:26,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 652 transitions, 20364 flow [2024-02-02 09:17:28,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 652 transitions, 19958 flow, removed 55 selfloop flow, removed 5 redundant places. [2024-02-02 09:17:28,162 INFO L231 Difference]: Finished difference. Result has 329 places, 599 transitions, 18286 flow [2024-02-02 09:17:28,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=17887, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=18286, PETRI_PLACES=329, PETRI_TRANSITIONS=599} [2024-02-02 09:17:28,163 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 257 predicate places. [2024-02-02 09:17:28,164 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 599 transitions, 18286 flow [2024-02-02 09:17:28,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:28,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:28,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:28,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-02-02 09:17:28,164 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:17:28,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:28,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1540984458, now seen corresponding path program 6 times [2024-02-02 09:17:28,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:28,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226719588] [2024-02-02 09:17:28,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:28,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:28,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:28,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:28,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:28,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226719588] [2024-02-02 09:17:28,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226719588] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:28,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:28,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:17:28,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270690458] [2024-02-02 09:17:28,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:28,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:17:28,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:28,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:17:28,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:17:28,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:17:28,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 599 transitions, 18286 flow. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:28,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:28,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:17:28,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:30,440 INFO L124 PetriNetUnfolderBase]: 2719/5550 cut-off events. [2024-02-02 09:17:30,440 INFO L125 PetriNetUnfolderBase]: For 367533/368427 co-relation queries the response was YES. [2024-02-02 09:17:30,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62065 conditions, 5550 events. 2719/5550 cut-off events. For 367533/368427 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 43863 event pairs, 396 based on Foata normal form. 76/5508 useless extension candidates. Maximal degree in co-relation 61930. Up to 2454 conditions per place. [2024-02-02 09:17:30,563 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 408 selfloop transitions, 199 changer transitions 2/649 dead transitions. [2024-02-02 09:17:30,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 649 transitions, 20293 flow [2024-02-02 09:17:30,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:17:30,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:17:30,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 210 transitions. [2024-02-02 09:17:30,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4411764705882353 [2024-02-02 09:17:30,572 INFO L175 Difference]: Start difference. First operand has 329 places, 599 transitions, 18286 flow. Second operand 7 states and 210 transitions. [2024-02-02 09:17:30,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 649 transitions, 20293 flow [2024-02-02 09:17:32,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 649 transitions, 20032 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-02-02 09:17:32,183 INFO L231 Difference]: Finished difference. Result has 331 places, 599 transitions, 18434 flow [2024-02-02 09:17:32,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=18025, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=18434, PETRI_PLACES=331, PETRI_TRANSITIONS=599} [2024-02-02 09:17:32,183 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 259 predicate places. [2024-02-02 09:17:32,183 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 599 transitions, 18434 flow [2024-02-02 09:17:32,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:32,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:32,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:32,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-02-02 09:17:32,184 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:17:32,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:32,184 INFO L85 PathProgramCache]: Analyzing trace with hash -372973562, now seen corresponding path program 7 times [2024-02-02 09:17:32,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:32,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687234655] [2024-02-02 09:17:32,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:32,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:32,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:32,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:32,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:32,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687234655] [2024-02-02 09:17:32,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687234655] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:32,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:32,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:17:32,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097519490] [2024-02-02 09:17:32,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:32,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:17:32,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:32,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:17:32,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:17:32,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:17:32,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 599 transitions, 18434 flow. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:32,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:32,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:17:32,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:34,356 INFO L124 PetriNetUnfolderBase]: 2709/5528 cut-off events. [2024-02-02 09:17:34,356 INFO L125 PetriNetUnfolderBase]: For 377687/378591 co-relation queries the response was YES. [2024-02-02 09:17:34,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61984 conditions, 5528 events. 2709/5528 cut-off events. For 377687/378591 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 43680 event pairs, 413 based on Foata normal form. 68/5478 useless extension candidates. Maximal degree in co-relation 61848. Up to 2450 conditions per place. [2024-02-02 09:17:34,437 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 394 selfloop transitions, 205 changer transitions 2/641 dead transitions. [2024-02-02 09:17:34,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 641 transitions, 20227 flow [2024-02-02 09:17:34,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:17:34,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:17:34,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 206 transitions. [2024-02-02 09:17:34,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4327731092436975 [2024-02-02 09:17:34,438 INFO L175 Difference]: Start difference. First operand has 331 places, 599 transitions, 18434 flow. Second operand 7 states and 206 transitions. [2024-02-02 09:17:34,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 641 transitions, 20227 flow [2024-02-02 09:17:35,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 641 transitions, 19827 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-02-02 09:17:35,571 INFO L231 Difference]: Finished difference. Result has 332 places, 599 transitions, 18459 flow [2024-02-02 09:17:35,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=18034, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=18459, PETRI_PLACES=332, PETRI_TRANSITIONS=599} [2024-02-02 09:17:35,571 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 260 predicate places. [2024-02-02 09:17:35,571 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 599 transitions, 18459 flow [2024-02-02 09:17:35,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:35,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:35,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:35,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-02-02 09:17:35,572 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:17:35,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:35,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1985708744, now seen corresponding path program 1 times [2024-02-02 09:17:35,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:35,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193069048] [2024-02-02 09:17:35,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:35,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:35,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:35,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:35,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:35,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193069048] [2024-02-02 09:17:35,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193069048] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:35,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:35,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:17:35,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242119242] [2024-02-02 09:17:35,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:35,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:17:35,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:35,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:17:35,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:17:35,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:17:35,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 599 transitions, 18459 flow. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:35,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:35,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:17:35,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:37,507 INFO L124 PetriNetUnfolderBase]: 2663/5483 cut-off events. [2024-02-02 09:17:37,507 INFO L125 PetriNetUnfolderBase]: For 364981/365687 co-relation queries the response was YES. [2024-02-02 09:17:37,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61468 conditions, 5483 events. 2663/5483 cut-off events. For 364981/365687 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 43129 event pairs, 301 based on Foata normal form. 63/5408 useless extension candidates. Maximal degree in co-relation 61332. Up to 2379 conditions per place. [2024-02-02 09:17:37,578 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 408 selfloop transitions, 194 changer transitions 2/647 dead transitions. [2024-02-02 09:17:37,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 647 transitions, 20364 flow [2024-02-02 09:17:37,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:17:37,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:17:37,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 209 transitions. [2024-02-02 09:17:37,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43907563025210083 [2024-02-02 09:17:37,579 INFO L175 Difference]: Start difference. First operand has 332 places, 599 transitions, 18459 flow. Second operand 7 states and 209 transitions. [2024-02-02 09:17:37,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 647 transitions, 20364 flow [2024-02-02 09:17:38,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 647 transitions, 19941 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-02-02 09:17:38,729 INFO L231 Difference]: Finished difference. Result has 333 places, 599 transitions, 18435 flow [2024-02-02 09:17:38,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=18036, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=18435, PETRI_PLACES=333, PETRI_TRANSITIONS=599} [2024-02-02 09:17:38,730 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 261 predicate places. [2024-02-02 09:17:38,730 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 599 transitions, 18435 flow [2024-02-02 09:17:38,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:38,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:38,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:38,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-02-02 09:17:38,730 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:17:38,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:38,730 INFO L85 PathProgramCache]: Analyzing trace with hash 2012216604, now seen corresponding path program 2 times [2024-02-02 09:17:38,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:38,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790121466] [2024-02-02 09:17:38,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:38,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:38,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:38,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:38,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:38,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790121466] [2024-02-02 09:17:38,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790121466] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:38,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:38,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:17:38,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791715486] [2024-02-02 09:17:38,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:38,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:17:38,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:38,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:17:38,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:17:38,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:17:38,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 599 transitions, 18435 flow. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:38,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:38,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:17:38,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:40,655 INFO L124 PetriNetUnfolderBase]: 2649/5464 cut-off events. [2024-02-02 09:17:40,655 INFO L125 PetriNetUnfolderBase]: For 363813/364520 co-relation queries the response was YES. [2024-02-02 09:17:40,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61397 conditions, 5464 events. 2649/5464 cut-off events. For 363813/364520 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 43067 event pairs, 332 based on Foata normal form. 63/5389 useless extension candidates. Maximal degree in co-relation 61260. Up to 2375 conditions per place. [2024-02-02 09:17:40,774 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 403 selfloop transitions, 198 changer transitions 2/646 dead transitions. [2024-02-02 09:17:40,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 646 transitions, 20306 flow [2024-02-02 09:17:40,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:17:40,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:17:40,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 206 transitions. [2024-02-02 09:17:40,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4327731092436975 [2024-02-02 09:17:40,776 INFO L175 Difference]: Start difference. First operand has 333 places, 599 transitions, 18435 flow. Second operand 7 states and 206 transitions. [2024-02-02 09:17:40,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 646 transitions, 20306 flow [2024-02-02 09:17:42,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 646 transitions, 20036 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-02-02 09:17:42,519 INFO L231 Difference]: Finished difference. Result has 335 places, 599 transitions, 18572 flow [2024-02-02 09:17:42,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=18165, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=18572, PETRI_PLACES=335, PETRI_TRANSITIONS=599} [2024-02-02 09:17:42,520 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 263 predicate places. [2024-02-02 09:17:42,520 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 599 transitions, 18572 flow [2024-02-02 09:17:42,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:42,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:42,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:42,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-02-02 09:17:42,521 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:17:42,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:42,521 INFO L85 PathProgramCache]: Analyzing trace with hash -132085352, now seen corresponding path program 3 times [2024-02-02 09:17:42,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:42,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128585404] [2024-02-02 09:17:42,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:42,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:42,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:42,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:42,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:42,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128585404] [2024-02-02 09:17:42,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128585404] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:42,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:42,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:17:42,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010539577] [2024-02-02 09:17:42,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:42,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:17:42,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:42,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:17:42,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:17:42,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:17:42,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 599 transitions, 18572 flow. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:42,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:42,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:17:42,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:44,573 INFO L124 PetriNetUnfolderBase]: 2639/5443 cut-off events. [2024-02-02 09:17:44,574 INFO L125 PetriNetUnfolderBase]: For 373818/374520 co-relation queries the response was YES. [2024-02-02 09:17:44,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61424 conditions, 5443 events. 2639/5443 cut-off events. For 373818/374520 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 42818 event pairs, 305 based on Foata normal form. 61/5363 useless extension candidates. Maximal degree in co-relation 61286. Up to 2371 conditions per place. [2024-02-02 09:17:44,693 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 385 selfloop transitions, 208 changer transitions 2/638 dead transitions. [2024-02-02 09:17:44,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 638 transitions, 20297 flow [2024-02-02 09:17:44,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:17:44,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:17:44,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 206 transitions. [2024-02-02 09:17:44,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4327731092436975 [2024-02-02 09:17:44,694 INFO L175 Difference]: Start difference. First operand has 335 places, 599 transitions, 18572 flow. Second operand 7 states and 206 transitions. [2024-02-02 09:17:44,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 638 transitions, 20297 flow [2024-02-02 09:17:45,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 638 transitions, 19899 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-02-02 09:17:45,967 INFO L231 Difference]: Finished difference. Result has 336 places, 599 transitions, 18605 flow [2024-02-02 09:17:45,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=18174, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=18605, PETRI_PLACES=336, PETRI_TRANSITIONS=599} [2024-02-02 09:17:45,967 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 264 predicate places. [2024-02-02 09:17:45,967 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 599 transitions, 18605 flow [2024-02-02 09:17:45,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:45,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:45,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:45,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-02-02 09:17:45,968 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:17:45,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:45,968 INFO L85 PathProgramCache]: Analyzing trace with hash -395020068, now seen corresponding path program 4 times [2024-02-02 09:17:45,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:45,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028960157] [2024-02-02 09:17:45,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:45,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:45,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:46,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:46,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:46,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028960157] [2024-02-02 09:17:46,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028960157] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:46,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:46,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:17:46,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098664304] [2024-02-02 09:17:46,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:46,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:17:46,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:46,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:17:46,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:17:46,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:17:46,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 599 transitions, 18605 flow. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:46,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:46,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:17:46,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:47,871 INFO L124 PetriNetUnfolderBase]: 2613/5401 cut-off events. [2024-02-02 09:17:47,871 INFO L125 PetriNetUnfolderBase]: For 374679/375382 co-relation queries the response was YES. [2024-02-02 09:17:47,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61274 conditions, 5401 events. 2613/5401 cut-off events. For 374679/375382 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 42500 event pairs, 318 based on Foata normal form. 69/5329 useless extension candidates. Maximal degree in co-relation 61136. Up to 2363 conditions per place. [2024-02-02 09:17:47,949 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 371 selfloop transitions, 227 changer transitions 2/643 dead transitions. [2024-02-02 09:17:47,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 643 transitions, 20362 flow [2024-02-02 09:17:47,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:17:47,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:17:47,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 216 transitions. [2024-02-02 09:17:47,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453781512605042 [2024-02-02 09:17:47,950 INFO L175 Difference]: Start difference. First operand has 336 places, 599 transitions, 18605 flow. Second operand 7 states and 216 transitions. [2024-02-02 09:17:47,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 643 transitions, 20362 flow [2024-02-02 09:17:49,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 643 transitions, 20045 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-02-02 09:17:49,054 INFO L231 Difference]: Finished difference. Result has 338 places, 599 transitions, 18799 flow [2024-02-02 09:17:49,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=18288, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=227, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=18799, PETRI_PLACES=338, PETRI_TRANSITIONS=599} [2024-02-02 09:17:49,055 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 266 predicate places. [2024-02-02 09:17:49,055 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 599 transitions, 18799 flow [2024-02-02 09:17:49,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:49,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:49,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:49,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-02-02 09:17:49,055 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:17:49,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:49,056 INFO L85 PathProgramCache]: Analyzing trace with hash -394099368, now seen corresponding path program 5 times [2024-02-02 09:17:49,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:49,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481970098] [2024-02-02 09:17:49,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:49,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:49,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:49,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:49,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481970098] [2024-02-02 09:17:49,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481970098] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:49,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:49,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:17:49,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310899215] [2024-02-02 09:17:49,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:49,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:17:49,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:49,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:17:49,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:17:49,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:17:49,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 599 transitions, 18799 flow. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:49,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:49,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:17:49,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:50,852 INFO L124 PetriNetUnfolderBase]: 2599/5375 cut-off events. [2024-02-02 09:17:50,852 INFO L125 PetriNetUnfolderBase]: For 387880/388586 co-relation queries the response was YES. [2024-02-02 09:17:50,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61397 conditions, 5375 events. 2599/5375 cut-off events. For 387880/388586 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 42250 event pairs, 331 based on Foata normal form. 65/5299 useless extension candidates. Maximal degree in co-relation 61258. Up to 2357 conditions per place. [2024-02-02 09:17:50,936 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 386 selfloop transitions, 209 changer transitions 2/640 dead transitions. [2024-02-02 09:17:50,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 640 transitions, 20528 flow [2024-02-02 09:17:50,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:17:50,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:17:50,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 212 transitions. [2024-02-02 09:17:50,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44537815126050423 [2024-02-02 09:17:50,937 INFO L175 Difference]: Start difference. First operand has 338 places, 599 transitions, 18799 flow. Second operand 7 states and 212 transitions. [2024-02-02 09:17:50,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 640 transitions, 20528 flow [2024-02-02 09:17:52,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 640 transitions, 19843 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-02-02 09:17:52,136 INFO L231 Difference]: Finished difference. Result has 337 places, 599 transitions, 18545 flow [2024-02-02 09:17:52,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=18114, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=18545, PETRI_PLACES=337, PETRI_TRANSITIONS=599} [2024-02-02 09:17:52,137 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 265 predicate places. [2024-02-02 09:17:52,137 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 599 transitions, 18545 flow [2024-02-02 09:17:52,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:52,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:52,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:52,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-02-02 09:17:52,137 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:17:52,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:52,137 INFO L85 PathProgramCache]: Analyzing trace with hash 633690132, now seen corresponding path program 6 times [2024-02-02 09:17:52,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:52,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133795052] [2024-02-02 09:17:52,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:52,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:52,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:52,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:52,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:52,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133795052] [2024-02-02 09:17:52,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133795052] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:52,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:52,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:17:52,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184479067] [2024-02-02 09:17:52,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:52,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:17:52,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:52,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:17:52,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:17:52,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:17:52,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 599 transitions, 18545 flow. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:52,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:52,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:17:52,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:54,013 INFO L124 PetriNetUnfolderBase]: 2653/5484 cut-off events. [2024-02-02 09:17:54,013 INFO L125 PetriNetUnfolderBase]: For 376318/377014 co-relation queries the response was YES. [2024-02-02 09:17:54,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62176 conditions, 5484 events. 2653/5484 cut-off events. For 376318/377014 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 43171 event pairs, 312 based on Foata normal form. 69/5412 useless extension candidates. Maximal degree in co-relation 62038. Up to 2379 conditions per place. [2024-02-02 09:17:54,125 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 410 selfloop transitions, 190 changer transitions 2/645 dead transitions. [2024-02-02 09:17:54,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 645 transitions, 20589 flow [2024-02-02 09:17:54,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:17:54,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:17:54,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 202 transitions. [2024-02-02 09:17:54,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42436974789915966 [2024-02-02 09:17:54,126 INFO L175 Difference]: Start difference. First operand has 337 places, 599 transitions, 18545 flow. Second operand 7 states and 202 transitions. [2024-02-02 09:17:54,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 645 transitions, 20589 flow [2024-02-02 09:17:55,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 645 transitions, 20234 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-02-02 09:17:55,590 INFO L231 Difference]: Finished difference. Result has 340 places, 609 transitions, 19016 flow [2024-02-02 09:17:55,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=18204, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19016, PETRI_PLACES=340, PETRI_TRANSITIONS=609} [2024-02-02 09:17:55,591 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 268 predicate places. [2024-02-02 09:17:55,591 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 609 transitions, 19016 flow [2024-02-02 09:17:55,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:55,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:55,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:55,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-02-02 09:17:55,592 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:17:55,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:55,592 INFO L85 PathProgramCache]: Analyzing trace with hash 670494968, now seen corresponding path program 3 times [2024-02-02 09:17:55,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:55,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240322078] [2024-02-02 09:17:55,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:55,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:55,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:55,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:55,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:55,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240322078] [2024-02-02 09:17:55,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240322078] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:55,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:55,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:17:55,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706537648] [2024-02-02 09:17:55,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:55,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:17:55,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:55,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:17:55,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:17:55,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:17:55,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 609 transitions, 19016 flow. Second operand has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:55,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:55,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:17:55,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:17:57,951 INFO L124 PetriNetUnfolderBase]: 2695/5504 cut-off events. [2024-02-02 09:17:57,951 INFO L125 PetriNetUnfolderBase]: For 396547/397309 co-relation queries the response was YES. [2024-02-02 09:17:58,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63445 conditions, 5504 events. 2695/5504 cut-off events. For 396547/397309 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 43217 event pairs, 939 based on Foata normal form. 108/5458 useless extension candidates. Maximal degree in co-relation 63305. Up to 2689 conditions per place. [2024-02-02 09:17:58,068 INFO L140 encePairwiseOnDemand]: 53/68 looper letters, 412 selfloop transitions, 184 changer transitions 0/639 dead transitions. [2024-02-02 09:17:58,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 639 transitions, 20681 flow [2024-02-02 09:17:58,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:17:58,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:17:58,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 200 transitions. [2024-02-02 09:17:58,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42016806722689076 [2024-02-02 09:17:58,069 INFO L175 Difference]: Start difference. First operand has 340 places, 609 transitions, 19016 flow. Second operand 7 states and 200 transitions. [2024-02-02 09:17:58,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 639 transitions, 20681 flow [2024-02-02 09:17:59,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 639 transitions, 20520 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-02 09:17:59,656 INFO L231 Difference]: Finished difference. Result has 344 places, 610 transitions, 19260 flow [2024-02-02 09:17:59,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=18855, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19260, PETRI_PLACES=344, PETRI_TRANSITIONS=610} [2024-02-02 09:17:59,657 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 272 predicate places. [2024-02-02 09:17:59,657 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 610 transitions, 19260 flow [2024-02-02 09:17:59,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:59,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:17:59,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:17:59,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-02-02 09:17:59,658 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:17:59,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:17:59,658 INFO L85 PathProgramCache]: Analyzing trace with hash -104788196, now seen corresponding path program 4 times [2024-02-02 09:17:59,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:17:59,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160345793] [2024-02-02 09:17:59,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:17:59,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:17:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:17:59,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:17:59,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:17:59,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160345793] [2024-02-02 09:17:59,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160345793] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:17:59,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:17:59,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:17:59,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773643772] [2024-02-02 09:17:59,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:17:59,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:17:59,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:17:59,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:17:59,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:17:59,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:17:59,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 610 transitions, 19260 flow. Second operand has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:17:59,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:17:59,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:17:59,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:18:01,620 INFO L124 PetriNetUnfolderBase]: 2698/5534 cut-off events. [2024-02-02 09:18:01,620 INFO L125 PetriNetUnfolderBase]: For 408098/408860 co-relation queries the response was YES. [2024-02-02 09:18:01,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63793 conditions, 5534 events. 2698/5534 cut-off events. For 408098/408860 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 43781 event pairs, 945 based on Foata normal form. 110/5490 useless extension candidates. Maximal degree in co-relation 63652. Up to 2696 conditions per place. [2024-02-02 09:18:01,705 INFO L140 encePairwiseOnDemand]: 54/68 looper letters, 404 selfloop transitions, 202 changer transitions 0/649 dead transitions. [2024-02-02 09:18:01,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 649 transitions, 21128 flow [2024-02-02 09:18:01,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:18:01,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:18:01,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 209 transitions. [2024-02-02 09:18:01,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43907563025210083 [2024-02-02 09:18:01,706 INFO L175 Difference]: Start difference. First operand has 344 places, 610 transitions, 19260 flow. Second operand 7 states and 209 transitions. [2024-02-02 09:18:01,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 649 transitions, 21128 flow [2024-02-02 09:18:03,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 649 transitions, 20564 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-02-02 09:18:03,293 INFO L231 Difference]: Finished difference. Result has 342 places, 612 transitions, 19156 flow [2024-02-02 09:18:03,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=18700, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19156, PETRI_PLACES=342, PETRI_TRANSITIONS=612} [2024-02-02 09:18:03,293 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 270 predicate places. [2024-02-02 09:18:03,293 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 612 transitions, 19156 flow [2024-02-02 09:18:03,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:03,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:18:03,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:18:03,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-02-02 09:18:03,294 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:18:03,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:18:03,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1218553876, now seen corresponding path program 5 times [2024-02-02 09:18:03,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:18:03,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652494766] [2024-02-02 09:18:03,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:18:03,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:18:03,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:18:03,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:18:03,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:18:03,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652494766] [2024-02-02 09:18:03,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652494766] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:18:03,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:18:03,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:18:03,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707287715] [2024-02-02 09:18:03,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:18:03,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:18:03,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:18:03,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:18:03,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:18:03,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:18:03,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 612 transitions, 19156 flow. Second operand has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:03,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:18:03,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:18:03,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:18:05,637 INFO L124 PetriNetUnfolderBase]: 2715/5559 cut-off events. [2024-02-02 09:18:05,637 INFO L125 PetriNetUnfolderBase]: For 394812/395581 co-relation queries the response was YES. [2024-02-02 09:18:05,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63943 conditions, 5559 events. 2715/5559 cut-off events. For 394812/395581 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 44002 event pairs, 938 based on Foata normal form. 90/5488 useless extension candidates. Maximal degree in co-relation 63803. Up to 2707 conditions per place. [2024-02-02 09:18:05,780 INFO L140 encePairwiseOnDemand]: 54/68 looper letters, 406 selfloop transitions, 196 changer transitions 0/645 dead transitions. [2024-02-02 09:18:05,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 645 transitions, 20867 flow [2024-02-02 09:18:05,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:18:05,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:18:05,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 202 transitions. [2024-02-02 09:18:05,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42436974789915966 [2024-02-02 09:18:05,781 INFO L175 Difference]: Start difference. First operand has 342 places, 612 transitions, 19156 flow. Second operand 7 states and 202 transitions. [2024-02-02 09:18:05,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 645 transitions, 20867 flow [2024-02-02 09:18:07,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 645 transitions, 20469 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-02-02 09:18:07,626 INFO L231 Difference]: Finished difference. Result has 338 places, 615 transitions, 19282 flow [2024-02-02 09:18:07,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=18738, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19282, PETRI_PLACES=338, PETRI_TRANSITIONS=615} [2024-02-02 09:18:07,627 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 266 predicate places. [2024-02-02 09:18:07,627 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 615 transitions, 19282 flow [2024-02-02 09:18:07,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.0) internal successors, (144), 8 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:07,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:18:07,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:18:07,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-02-02 09:18:07,628 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:18:07,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:18:07,628 INFO L85 PathProgramCache]: Analyzing trace with hash 2074487094, now seen corresponding path program 7 times [2024-02-02 09:18:07,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:18:07,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834958647] [2024-02-02 09:18:07,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:18:07,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:18:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:18:07,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:18:07,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:18:07,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834958647] [2024-02-02 09:18:07,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834958647] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:18:07,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:18:07,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-02 09:18:07,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694314998] [2024-02-02 09:18:07,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:18:07,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-02 09:18:07,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:18:07,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-02 09:18:07,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-02 09:18:07,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:18:07,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 615 transitions, 19282 flow. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:07,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:18:07,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:18:07,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:18:09,781 INFO L124 PetriNetUnfolderBase]: 2755/5625 cut-off events. [2024-02-02 09:18:09,782 INFO L125 PetriNetUnfolderBase]: For 399211/399912 co-relation queries the response was YES. [2024-02-02 09:18:09,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64422 conditions, 5625 events. 2755/5625 cut-off events. For 399211/399912 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 44243 event pairs, 442 based on Foata normal form. 63/5515 useless extension candidates. Maximal degree in co-relation 64287. Up to 2449 conditions per place. [2024-02-02 09:18:09,866 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 389 selfloop transitions, 217 changer transitions 2/651 dead transitions. [2024-02-02 09:18:09,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 651 transitions, 21013 flow [2024-02-02 09:18:09,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:18:09,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:18:09,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 200 transitions. [2024-02-02 09:18:09,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42016806722689076 [2024-02-02 09:18:09,867 INFO L175 Difference]: Start difference. First operand has 338 places, 615 transitions, 19282 flow. Second operand 7 states and 200 transitions. [2024-02-02 09:18:09,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 651 transitions, 21013 flow [2024-02-02 09:18:11,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 651 transitions, 20711 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-02-02 09:18:11,137 INFO L231 Difference]: Finished difference. Result has 342 places, 623 transitions, 19687 flow [2024-02-02 09:18:11,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=18984, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19687, PETRI_PLACES=342, PETRI_TRANSITIONS=623} [2024-02-02 09:18:11,137 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 270 predicate places. [2024-02-02 09:18:11,137 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 623 transitions, 19687 flow [2024-02-02 09:18:11,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 7 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:11,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:18:11,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:18:11,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-02-02 09:18:11,138 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:18:11,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:18:11,138 INFO L85 PathProgramCache]: Analyzing trace with hash 943711455, now seen corresponding path program 1 times [2024-02-02 09:18:11,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:18:11,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684780992] [2024-02-02 09:18:11,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:18:11,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:18:11,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:18:11,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:18:11,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:18:11,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684780992] [2024-02-02 09:18:11,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684780992] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:18:11,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:18:11,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:18:11,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330099739] [2024-02-02 09:18:11,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:18:11,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:18:11,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:18:11,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:18:11,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:18:11,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:18:11,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 623 transitions, 19687 flow. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:11,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:18:11,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:18:11,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:18:13,372 INFO L124 PetriNetUnfolderBase]: 2750/5646 cut-off events. [2024-02-02 09:18:13,372 INFO L125 PetriNetUnfolderBase]: For 412373/413122 co-relation queries the response was YES. [2024-02-02 09:18:13,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66064 conditions, 5646 events. 2750/5646 cut-off events. For 412373/413122 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 44677 event pairs, 681 based on Foata normal form. 79/5575 useless extension candidates. Maximal degree in co-relation 65927. Up to 2424 conditions per place. [2024-02-02 09:18:13,443 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 381 selfloop transitions, 217 changer transitions 17/655 dead transitions. [2024-02-02 09:18:13,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 655 transitions, 21381 flow [2024-02-02 09:18:13,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:18:13,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:18:13,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 197 transitions. [2024-02-02 09:18:13,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41386554621848737 [2024-02-02 09:18:13,444 INFO L175 Difference]: Start difference. First operand has 342 places, 623 transitions, 19687 flow. Second operand 7 states and 197 transitions. [2024-02-02 09:18:13,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 655 transitions, 21381 flow [2024-02-02 09:18:14,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 655 transitions, 20944 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-02-02 09:18:14,639 INFO L231 Difference]: Finished difference. Result has 343 places, 607 transitions, 19328 flow [2024-02-02 09:18:14,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=19250, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19328, PETRI_PLACES=343, PETRI_TRANSITIONS=607} [2024-02-02 09:18:14,640 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 271 predicate places. [2024-02-02 09:18:14,640 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 607 transitions, 19328 flow [2024-02-02 09:18:14,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:14,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:18:14,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:18:14,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-02-02 09:18:14,641 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:18:14,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:18:14,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1594530557, now seen corresponding path program 2 times [2024-02-02 09:18:14,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:18:14,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175572494] [2024-02-02 09:18:14,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:18:14,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:18:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:18:14,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:18:14,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:18:14,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175572494] [2024-02-02 09:18:14,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175572494] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:18:14,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:18:14,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:18:14,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120483812] [2024-02-02 09:18:14,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:18:14,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:18:14,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:18:14,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:18:14,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:18:14,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:18:14,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 607 transitions, 19328 flow. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:14,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:18:14,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:18:14,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:18:16,993 INFO L124 PetriNetUnfolderBase]: 2632/5453 cut-off events. [2024-02-02 09:18:16,994 INFO L125 PetriNetUnfolderBase]: For 402220/402987 co-relation queries the response was YES. [2024-02-02 09:18:17,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63418 conditions, 5453 events. 2632/5453 cut-off events. For 402220/402987 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 43271 event pairs, 668 based on Foata normal form. 71/5388 useless extension candidates. Maximal degree in co-relation 63281. Up to 2424 conditions per place. [2024-02-02 09:18:17,104 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 415 selfloop transitions, 164 changer transitions 22/639 dead transitions. [2024-02-02 09:18:17,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 639 transitions, 20987 flow [2024-02-02 09:18:17,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:18:17,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:18:17,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 198 transitions. [2024-02-02 09:18:17,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41596638655462187 [2024-02-02 09:18:17,105 INFO L175 Difference]: Start difference. First operand has 343 places, 607 transitions, 19328 flow. Second operand 7 states and 198 transitions. [2024-02-02 09:18:17,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 639 transitions, 20987 flow [2024-02-02 09:18:18,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 639 transitions, 20492 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-02-02 09:18:18,340 INFO L231 Difference]: Finished difference. Result has 343 places, 585 transitions, 18633 flow [2024-02-02 09:18:18,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=18837, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=18633, PETRI_PLACES=343, PETRI_TRANSITIONS=585} [2024-02-02 09:18:18,340 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 271 predicate places. [2024-02-02 09:18:18,341 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 585 transitions, 18633 flow [2024-02-02 09:18:18,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:18,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:18:18,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:18:18,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-02-02 09:18:18,341 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:18:18,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:18:18,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1535116629, now seen corresponding path program 3 times [2024-02-02 09:18:18,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:18:18,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878469272] [2024-02-02 09:18:18,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:18:18,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:18:18,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:18:18,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:18:18,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:18:18,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878469272] [2024-02-02 09:18:18,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878469272] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:18:18,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:18:18,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:18:18,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005344661] [2024-02-02 09:18:18,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:18:18,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:18:18,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:18:18,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:18:18,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:18:18,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:18:18,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 585 transitions, 18633 flow. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:18,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:18:18,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:18:18,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:18:20,297 INFO L124 PetriNetUnfolderBase]: 2580/5415 cut-off events. [2024-02-02 09:18:20,297 INFO L125 PetriNetUnfolderBase]: For 390114/390851 co-relation queries the response was YES. [2024-02-02 09:18:20,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62468 conditions, 5415 events. 2580/5415 cut-off events. For 390114/390851 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 43363 event pairs, 705 based on Foata normal form. 65/5335 useless extension candidates. Maximal degree in co-relation 62332. Up to 2868 conditions per place. [2024-02-02 09:18:20,373 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 453 selfloop transitions, 104 changer transitions 22/617 dead transitions. [2024-02-02 09:18:20,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 617 transitions, 20281 flow [2024-02-02 09:18:20,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:18:20,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:18:20,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 187 transitions. [2024-02-02 09:18:20,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-02-02 09:18:20,375 INFO L175 Difference]: Start difference. First operand has 343 places, 585 transitions, 18633 flow. Second operand 7 states and 187 transitions. [2024-02-02 09:18:20,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 617 transitions, 20281 flow [2024-02-02 09:18:21,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 617 transitions, 19890 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-02-02 09:18:21,547 INFO L231 Difference]: Finished difference. Result has 341 places, 569 transitions, 17999 flow [2024-02-02 09:18:21,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=18250, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17999, PETRI_PLACES=341, PETRI_TRANSITIONS=569} [2024-02-02 09:18:21,547 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 269 predicate places. [2024-02-02 09:18:21,547 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 569 transitions, 17999 flow [2024-02-02 09:18:21,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:21,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:18:21,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:18:21,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-02-02 09:18:21,548 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:18:21,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:18:21,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1364542863, now seen corresponding path program 4 times [2024-02-02 09:18:21,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:18:21,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736139214] [2024-02-02 09:18:21,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:18:21,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:18:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:18:21,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:18:21,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:18:21,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736139214] [2024-02-02 09:18:21,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736139214] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:18:21,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:18:21,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:18:21,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215463193] [2024-02-02 09:18:21,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:18:21,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:18:21,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:18:21,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:18:21,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:18:21,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:18:21,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 569 transitions, 17999 flow. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:21,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:18:21,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:18:21,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:18:23,622 INFO L124 PetriNetUnfolderBase]: 2554/5309 cut-off events. [2024-02-02 09:18:23,622 INFO L125 PetriNetUnfolderBase]: For 378953/379703 co-relation queries the response was YES. [2024-02-02 09:18:23,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60807 conditions, 5309 events. 2554/5309 cut-off events. For 378953/379703 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 41853 event pairs, 713 based on Foata normal form. 62/5211 useless extension candidates. Maximal degree in co-relation 60673. Up to 2387 conditions per place. [2024-02-02 09:18:23,728 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 406 selfloop transitions, 135 changer transitions 17/596 dead transitions. [2024-02-02 09:18:23,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 596 transitions, 19463 flow [2024-02-02 09:18:23,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:18:23,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:18:23,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2024-02-02 09:18:23,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40336134453781514 [2024-02-02 09:18:23,729 INFO L175 Difference]: Start difference. First operand has 341 places, 569 transitions, 17999 flow. Second operand 7 states and 192 transitions. [2024-02-02 09:18:23,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 596 transitions, 19463 flow [2024-02-02 09:18:25,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 596 transitions, 19184 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-02-02 09:18:25,023 INFO L231 Difference]: Finished difference. Result has 342 places, 556 transitions, 17738 flow [2024-02-02 09:18:25,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=17720, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17738, PETRI_PLACES=342, PETRI_TRANSITIONS=556} [2024-02-02 09:18:25,023 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 270 predicate places. [2024-02-02 09:18:25,024 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 556 transitions, 17738 flow [2024-02-02 09:18:25,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:25,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:18:25,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:18:25,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-02-02 09:18:25,024 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:18:25,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:18:25,024 INFO L85 PathProgramCache]: Analyzing trace with hash 295883477, now seen corresponding path program 5 times [2024-02-02 09:18:25,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:18:25,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794313861] [2024-02-02 09:18:25,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:18:25,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:18:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:18:25,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:18:25,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:18:25,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794313861] [2024-02-02 09:18:25,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794313861] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:18:25,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:18:25,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:18:25,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780027783] [2024-02-02 09:18:25,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:18:25,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:18:25,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:18:25,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:18:25,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:18:25,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:18:25,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 556 transitions, 17738 flow. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:25,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:18:25,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:18:25,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:18:27,171 INFO L124 PetriNetUnfolderBase]: 2520/5291 cut-off events. [2024-02-02 09:18:27,171 INFO L125 PetriNetUnfolderBase]: For 373049/373846 co-relation queries the response was YES. [2024-02-02 09:18:27,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61541 conditions, 5291 events. 2520/5291 cut-off events. For 373049/373846 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 42068 event pairs, 655 based on Foata normal form. 77/5235 useless extension candidates. Maximal degree in co-relation 61405. Up to 2214 conditions per place. [2024-02-02 09:18:27,288 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 429 selfloop transitions, 132 changer transitions 6/605 dead transitions. [2024-02-02 09:18:27,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 605 transitions, 19716 flow [2024-02-02 09:18:27,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:18:27,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:18:27,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 199 transitions. [2024-02-02 09:18:27,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4180672268907563 [2024-02-02 09:18:27,289 INFO L175 Difference]: Start difference. First operand has 342 places, 556 transitions, 17738 flow. Second operand 7 states and 199 transitions. [2024-02-02 09:18:27,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 605 transitions, 19716 flow [2024-02-02 09:18:29,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 605 transitions, 18990 flow, removed 35 selfloop flow, removed 12 redundant places. [2024-02-02 09:18:29,145 INFO L231 Difference]: Finished difference. Result has 338 places, 553 transitions, 17317 flow [2024-02-02 09:18:29,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=17045, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17317, PETRI_PLACES=338, PETRI_TRANSITIONS=553} [2024-02-02 09:18:29,146 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 266 predicate places. [2024-02-02 09:18:29,146 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 553 transitions, 17317 flow [2024-02-02 09:18:29,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:29,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:18:29,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:18:29,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-02-02 09:18:29,146 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:18:29,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:18:29,147 INFO L85 PathProgramCache]: Analyzing trace with hash -2099814219, now seen corresponding path program 6 times [2024-02-02 09:18:29,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:18:29,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573074977] [2024-02-02 09:18:29,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:18:29,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:18:29,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:18:29,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:18:29,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:18:29,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573074977] [2024-02-02 09:18:29,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573074977] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:18:29,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:18:29,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:18:29,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708339548] [2024-02-02 09:18:29,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:18:29,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:18:29,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:18:29,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:18:29,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:18:29,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:18:29,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 553 transitions, 17317 flow. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:29,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:18:29,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:18:29,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:18:31,262 INFO L124 PetriNetUnfolderBase]: 2493/5244 cut-off events. [2024-02-02 09:18:31,262 INFO L125 PetriNetUnfolderBase]: For 357055/357833 co-relation queries the response was YES. [2024-02-02 09:18:31,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59555 conditions, 5244 events. 2493/5244 cut-off events. For 357055/357833 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 41708 event pairs, 635 based on Foata normal form. 63/5165 useless extension candidates. Maximal degree in co-relation 59423. Up to 2105 conditions per place. [2024-02-02 09:18:31,376 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 411 selfloop transitions, 144 changer transitions 6/599 dead transitions. [2024-02-02 09:18:31,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 599 transitions, 19209 flow [2024-02-02 09:18:31,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:18:31,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:18:31,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 198 transitions. [2024-02-02 09:18:31,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41596638655462187 [2024-02-02 09:18:31,377 INFO L175 Difference]: Start difference. First operand has 338 places, 553 transitions, 17317 flow. Second operand 7 states and 198 transitions. [2024-02-02 09:18:31,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 599 transitions, 19209 flow [2024-02-02 09:18:32,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 599 transitions, 18911 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-02-02 09:18:32,881 INFO L231 Difference]: Finished difference. Result has 337 places, 547 transitions, 17274 flow [2024-02-02 09:18:32,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=17015, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17274, PETRI_PLACES=337, PETRI_TRANSITIONS=547} [2024-02-02 09:18:32,882 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 265 predicate places. [2024-02-02 09:18:32,882 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 547 transitions, 17274 flow [2024-02-02 09:18:32,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:32,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:18:32,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:18:32,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-02-02 09:18:32,882 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:18:32,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:18:32,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1335963985, now seen corresponding path program 7 times [2024-02-02 09:18:32,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:18:32,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885160488] [2024-02-02 09:18:32,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:18:32,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:18:32,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:18:33,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:18:33,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:18:33,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885160488] [2024-02-02 09:18:33,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885160488] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:18:33,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:18:33,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:18:33,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035327736] [2024-02-02 09:18:33,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:18:33,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:18:33,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:18:33,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:18:33,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:18:33,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:18:33,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 547 transitions, 17274 flow. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:33,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:18:33,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:18:33,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:18:34,903 INFO L124 PetriNetUnfolderBase]: 2478/5215 cut-off events. [2024-02-02 09:18:34,903 INFO L125 PetriNetUnfolderBase]: For 356244/357052 co-relation queries the response was YES. [2024-02-02 09:18:34,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59152 conditions, 5215 events. 2478/5215 cut-off events. For 356244/357052 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 41347 event pairs, 642 based on Foata normal form. 57/5139 useless extension candidates. Maximal degree in co-relation 59021. Up to 2214 conditions per place. [2024-02-02 09:18:34,969 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 379 selfloop transitions, 136 changer transitions 27/580 dead transitions. [2024-02-02 09:18:34,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 580 transitions, 18762 flow [2024-02-02 09:18:34,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:18:34,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:18:34,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2024-02-02 09:18:34,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40336134453781514 [2024-02-02 09:18:34,970 INFO L175 Difference]: Start difference. First operand has 337 places, 547 transitions, 17274 flow. Second operand 7 states and 192 transitions. [2024-02-02 09:18:34,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 580 transitions, 18762 flow [2024-02-02 09:18:35,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 580 transitions, 17975 flow, removed 0 selfloop flow, removed 22 redundant places. [2024-02-02 09:18:35,972 INFO L231 Difference]: Finished difference. Result has 319 places, 518 transitions, 16047 flow [2024-02-02 09:18:35,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=16411, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16047, PETRI_PLACES=319, PETRI_TRANSITIONS=518} [2024-02-02 09:18:35,972 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 247 predicate places. [2024-02-02 09:18:35,973 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 518 transitions, 16047 flow [2024-02-02 09:18:35,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:35,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:18:35,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:18:35,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-02-02 09:18:35,973 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:18:35,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:18:35,973 INFO L85 PathProgramCache]: Analyzing trace with hash 855992239, now seen corresponding path program 1 times [2024-02-02 09:18:35,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:18:35,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944706466] [2024-02-02 09:18:35,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:18:35,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:18:35,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:18:36,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:18:36,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:18:36,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944706466] [2024-02-02 09:18:36,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944706466] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:18:36,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:18:36,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:18:36,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477212697] [2024-02-02 09:18:36,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:18:36,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:18:36,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:18:36,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:18:36,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:18:36,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:18:36,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 518 transitions, 16047 flow. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:36,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:18:36,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:18:36,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:18:37,556 INFO L124 PetriNetUnfolderBase]: 2460/5085 cut-off events. [2024-02-02 09:18:37,556 INFO L125 PetriNetUnfolderBase]: For 315179/315728 co-relation queries the response was YES. [2024-02-02 09:18:37,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56407 conditions, 5085 events. 2460/5085 cut-off events. For 315179/315728 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 39071 event pairs, 579 based on Foata normal form. 81/5041 useless extension candidates. Maximal degree in co-relation 56293. Up to 2312 conditions per place. [2024-02-02 09:18:37,630 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 383 selfloop transitions, 133 changer transitions 18/572 dead transitions. [2024-02-02 09:18:37,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 572 transitions, 17883 flow [2024-02-02 09:18:37,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:18:37,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:18:37,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 222 transitions. [2024-02-02 09:18:37,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40808823529411764 [2024-02-02 09:18:37,631 INFO L175 Difference]: Start difference. First operand has 319 places, 518 transitions, 16047 flow. Second operand 8 states and 222 transitions. [2024-02-02 09:18:37,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 572 transitions, 17883 flow [2024-02-02 09:18:38,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 572 transitions, 17199 flow, removed 0 selfloop flow, removed 14 redundant places. [2024-02-02 09:18:38,535 INFO L231 Difference]: Finished difference. Result has 313 places, 501 transitions, 15264 flow [2024-02-02 09:18:38,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=15365, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15264, PETRI_PLACES=313, PETRI_TRANSITIONS=501} [2024-02-02 09:18:38,536 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 241 predicate places. [2024-02-02 09:18:38,536 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 501 transitions, 15264 flow [2024-02-02 09:18:38,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:38,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:18:38,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:18:38,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-02-02 09:18:38,536 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:18:38,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:18:38,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1998212259, now seen corresponding path program 2 times [2024-02-02 09:18:38,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:18:38,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375775852] [2024-02-02 09:18:38,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:18:38,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:18:38,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:18:38,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:18:38,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:18:38,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375775852] [2024-02-02 09:18:38,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375775852] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:18:38,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:18:38,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:18:38,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886078956] [2024-02-02 09:18:38,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:18:38,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:18:38,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:18:38,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:18:38,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:18:38,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:18:38,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 501 transitions, 15264 flow. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:38,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:18:38,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:18:38,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:18:40,032 INFO L124 PetriNetUnfolderBase]: 2380/4935 cut-off events. [2024-02-02 09:18:40,032 INFO L125 PetriNetUnfolderBase]: For 296956/297472 co-relation queries the response was YES. [2024-02-02 09:18:40,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53592 conditions, 4935 events. 2380/4935 cut-off events. For 296956/297472 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 37822 event pairs, 560 based on Foata normal form. 81/4892 useless extension candidates. Maximal degree in co-relation 53479. Up to 2005 conditions per place. [2024-02-02 09:18:40,098 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 364 selfloop transitions, 130 changer transitions 19/549 dead transitions. [2024-02-02 09:18:40,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 549 transitions, 16900 flow [2024-02-02 09:18:40,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:18:40,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:18:40,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 218 transitions. [2024-02-02 09:18:40,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4007352941176471 [2024-02-02 09:18:40,099 INFO L175 Difference]: Start difference. First operand has 313 places, 501 transitions, 15264 flow. Second operand 8 states and 218 transitions. [2024-02-02 09:18:40,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 549 transitions, 16900 flow [2024-02-02 09:18:40,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 549 transitions, 16619 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-02-02 09:18:40,936 INFO L231 Difference]: Finished difference. Result has 314 places, 483 transitions, 14837 flow [2024-02-02 09:18:40,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=14987, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14837, PETRI_PLACES=314, PETRI_TRANSITIONS=483} [2024-02-02 09:18:40,936 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 242 predicate places. [2024-02-02 09:18:40,936 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 483 transitions, 14837 flow [2024-02-02 09:18:40,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:40,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:18:40,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:18:40,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-02-02 09:18:40,937 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:18:40,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:18:40,937 INFO L85 PathProgramCache]: Analyzing trace with hash 636475389, now seen corresponding path program 3 times [2024-02-02 09:18:40,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:18:40,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769932472] [2024-02-02 09:18:40,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:18:40,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:18:40,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:18:41,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:18:41,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:18:41,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769932472] [2024-02-02 09:18:41,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769932472] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:18:41,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:18:41,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:18:41,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807358007] [2024-02-02 09:18:41,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:18:41,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:18:41,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:18:41,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:18:41,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:18:41,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:18:41,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 483 transitions, 14837 flow. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:41,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:18:41,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:18:41,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:18:42,517 INFO L124 PetriNetUnfolderBase]: 2293/4798 cut-off events. [2024-02-02 09:18:42,518 INFO L125 PetriNetUnfolderBase]: For 288352/288836 co-relation queries the response was YES. [2024-02-02 09:18:42,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51979 conditions, 4798 events. 2293/4798 cut-off events. For 288352/288836 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 36779 event pairs, 565 based on Foata normal form. 73/4753 useless extension candidates. Maximal degree in co-relation 51866. Up to 2269 conditions per place. [2024-02-02 09:18:42,593 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 304 selfloop transitions, 125 changer transitions 60/523 dead transitions. [2024-02-02 09:18:42,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 523 transitions, 16277 flow [2024-02-02 09:18:42,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:18:42,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:18:42,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 219 transitions. [2024-02-02 09:18:42,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025735294117647 [2024-02-02 09:18:42,594 INFO L175 Difference]: Start difference. First operand has 314 places, 483 transitions, 14837 flow. Second operand 8 states and 219 transitions. [2024-02-02 09:18:42,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 523 transitions, 16277 flow [2024-02-02 09:18:43,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 523 transitions, 15869 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-02-02 09:18:43,481 INFO L231 Difference]: Finished difference. Result has 313 places, 423 transitions, 13167 flow [2024-02-02 09:18:43,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=14429, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13167, PETRI_PLACES=313, PETRI_TRANSITIONS=423} [2024-02-02 09:18:43,481 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 241 predicate places. [2024-02-02 09:18:43,481 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 423 transitions, 13167 flow [2024-02-02 09:18:43,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:43,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:18:43,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:18:43,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-02-02 09:18:43,482 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:18:43,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:18:43,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1021354067, now seen corresponding path program 4 times [2024-02-02 09:18:43,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:18:43,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504175546] [2024-02-02 09:18:43,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:18:43,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:18:43,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:18:43,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:18:43,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:18:43,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504175546] [2024-02-02 09:18:43,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504175546] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:18:43,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:18:43,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:18:43,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142170740] [2024-02-02 09:18:43,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:18:43,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:18:43,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:18:43,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:18:43,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:18:43,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:18:43,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 423 transitions, 13167 flow. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:43,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:18:43,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:18:43,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:18:44,827 INFO L124 PetriNetUnfolderBase]: 2113/4400 cut-off events. [2024-02-02 09:18:44,827 INFO L125 PetriNetUnfolderBase]: For 263224/263631 co-relation queries the response was YES. [2024-02-02 09:18:44,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47178 conditions, 4400 events. 2113/4400 cut-off events. For 263224/263631 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 32872 event pairs, 520 based on Foata normal form. 78/4365 useless extension candidates. Maximal degree in co-relation 47066. Up to 1734 conditions per place. [2024-02-02 09:18:44,886 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 262 selfloop transitions, 151 changer transitions 20/464 dead transitions. [2024-02-02 09:18:44,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 464 transitions, 14483 flow [2024-02-02 09:18:44,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:18:44,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:18:44,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 224 transitions. [2024-02-02 09:18:44,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2024-02-02 09:18:44,887 INFO L175 Difference]: Start difference. First operand has 313 places, 423 transitions, 13167 flow. Second operand 8 states and 224 transitions. [2024-02-02 09:18:44,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 464 transitions, 14483 flow [2024-02-02 09:18:45,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 464 transitions, 13970 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-02-02 09:18:45,581 INFO L231 Difference]: Finished difference. Result has 309 places, 404 transitions, 12559 flow [2024-02-02 09:18:45,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=12656, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12559, PETRI_PLACES=309, PETRI_TRANSITIONS=404} [2024-02-02 09:18:45,581 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 237 predicate places. [2024-02-02 09:18:45,581 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 404 transitions, 12559 flow [2024-02-02 09:18:45,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:45,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:18:45,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:18:45,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-02-02 09:18:45,582 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:18:45,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:18:45,582 INFO L85 PathProgramCache]: Analyzing trace with hash 210659817, now seen corresponding path program 5 times [2024-02-02 09:18:45,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:18:45,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711231925] [2024-02-02 09:18:45,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:18:45,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:18:45,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:18:45,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:18:45,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:18:45,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711231925] [2024-02-02 09:18:45,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711231925] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:18:45,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:18:45,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:18:45,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941272036] [2024-02-02 09:18:45,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:18:45,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:18:45,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:18:45,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:18:45,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:18:45,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:18:45,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 404 transitions, 12559 flow. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:45,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:18:45,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:18:45,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:18:46,832 INFO L124 PetriNetUnfolderBase]: 1965/4148 cut-off events. [2024-02-02 09:18:46,832 INFO L125 PetriNetUnfolderBase]: For 238473/238857 co-relation queries the response was YES. [2024-02-02 09:18:46,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44349 conditions, 4148 events. 1965/4148 cut-off events. For 238473/238857 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 30938 event pairs, 490 based on Foata normal form. 56/4096 useless extension candidates. Maximal degree in co-relation 44239. Up to 1734 conditions per place. [2024-02-02 09:18:46,888 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 269 selfloop transitions, 115 changer transitions 31/444 dead transitions. [2024-02-02 09:18:46,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 444 transitions, 13822 flow [2024-02-02 09:18:46,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:18:46,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:18:46,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 223 transitions. [2024-02-02 09:18:46,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4099264705882353 [2024-02-02 09:18:46,889 INFO L175 Difference]: Start difference. First operand has 309 places, 404 transitions, 12559 flow. Second operand 8 states and 223 transitions. [2024-02-02 09:18:46,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 444 transitions, 13822 flow [2024-02-02 09:18:47,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 444 transitions, 13486 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-02-02 09:18:47,565 INFO L231 Difference]: Finished difference. Result has 309 places, 373 transitions, 11670 flow [2024-02-02 09:18:47,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=12223, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11670, PETRI_PLACES=309, PETRI_TRANSITIONS=373} [2024-02-02 09:18:47,565 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 237 predicate places. [2024-02-02 09:18:47,565 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 373 transitions, 11670 flow [2024-02-02 09:18:47,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:47,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:18:47,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:18:47,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-02-02 09:18:47,566 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:18:47,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:18:47,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1238449317, now seen corresponding path program 6 times [2024-02-02 09:18:47,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:18:47,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662662586] [2024-02-02 09:18:47,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:18:47,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:18:47,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:18:47,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:18:47,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:18:47,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662662586] [2024-02-02 09:18:47,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662662586] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:18:47,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:18:47,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:18:47,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476668926] [2024-02-02 09:18:47,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:18:47,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:18:47,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:18:47,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:18:47,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:18:47,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:18:47,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 373 transitions, 11670 flow. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:47,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:18:47,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:18:47,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:18:48,760 INFO L124 PetriNetUnfolderBase]: 1877/4043 cut-off events. [2024-02-02 09:18:48,760 INFO L125 PetriNetUnfolderBase]: For 222144/222524 co-relation queries the response was YES. [2024-02-02 09:18:48,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42555 conditions, 4043 events. 1877/4043 cut-off events. For 222144/222524 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 30434 event pairs, 522 based on Foata normal form. 56/4007 useless extension candidates. Maximal degree in co-relation 42446. Up to 2191 conditions per place. [2024-02-02 09:18:48,814 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 261 selfloop transitions, 75 changer transitions 43/408 dead transitions. [2024-02-02 09:18:48,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 408 transitions, 12795 flow [2024-02-02 09:18:48,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:18:48,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:18:48,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-02-02 09:18:48,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897058823529412 [2024-02-02 09:18:48,815 INFO L175 Difference]: Start difference. First operand has 309 places, 373 transitions, 11670 flow. Second operand 8 states and 212 transitions. [2024-02-02 09:18:48,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 408 transitions, 12795 flow [2024-02-02 09:18:49,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 408 transitions, 12434 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-02-02 09:18:49,421 INFO L231 Difference]: Finished difference. Result has 304 places, 332 transitions, 10417 flow [2024-02-02 09:18:49,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=11309, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10417, PETRI_PLACES=304, PETRI_TRANSITIONS=332} [2024-02-02 09:18:49,422 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 232 predicate places. [2024-02-02 09:18:49,422 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 332 transitions, 10417 flow [2024-02-02 09:18:49,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:49,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:18:49,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:18:49,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-02-02 09:18:49,423 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:18:49,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:18:49,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1495809199, now seen corresponding path program 7 times [2024-02-02 09:18:49,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:18:49,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596938564] [2024-02-02 09:18:49,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:18:49,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:18:49,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:18:49,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:18:49,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:18:49,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596938564] [2024-02-02 09:18:49,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596938564] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:18:49,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:18:49,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-02 09:18:49,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232619683] [2024-02-02 09:18:49,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:18:49,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-02 09:18:49,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:18:49,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-02 09:18:49,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-02 09:18:49,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-02-02 09:18:49,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 332 transitions, 10417 flow. Second operand has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:49,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:18:49,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-02-02 09:18:49,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:18:50,687 INFO L124 PetriNetUnfolderBase]: 1818/3823 cut-off events. [2024-02-02 09:18:50,687 INFO L125 PetriNetUnfolderBase]: For 206079/206388 co-relation queries the response was YES. [2024-02-02 09:18:50,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40115 conditions, 3823 events. 1818/3823 cut-off events. For 206079/206388 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 27804 event pairs, 542 based on Foata normal form. 48/3757 useless extension candidates. Maximal degree in co-relation 40008. Up to 1764 conditions per place. [2024-02-02 09:18:50,756 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 214 selfloop transitions, 87 changer transitions 23/352 dead transitions. [2024-02-02 09:18:50,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 352 transitions, 11211 flow [2024-02-02 09:18:50,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-02 09:18:50,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-02 09:18:50,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 185 transitions. [2024-02-02 09:18:50,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38865546218487396 [2024-02-02 09:18:50,757 INFO L175 Difference]: Start difference. First operand has 304 places, 332 transitions, 10417 flow. Second operand 7 states and 185 transitions. [2024-02-02 09:18:50,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 352 transitions, 11211 flow [2024-02-02 09:18:51,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 352 transitions, 10525 flow, removed 4 selfloop flow, removed 27 redundant places. [2024-02-02 09:18:51,313 INFO L231 Difference]: Finished difference. Result has 281 places, 307 transitions, 9404 flow [2024-02-02 09:18:51,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9671, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9404, PETRI_PLACES=281, PETRI_TRANSITIONS=307} [2024-02-02 09:18:51,313 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 209 predicate places. [2024-02-02 09:18:51,313 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 307 transitions, 9404 flow [2024-02-02 09:18:51,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.25) internal successors, (146), 8 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:18:51,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:18:51,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:18:51,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-02-02 09:18:51,314 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-02-02 09:18:51,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:18:51,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1092365750, now seen corresponding path program 1 times [2024-02-02 09:18:51,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:18:51,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034688880] [2024-02-02 09:18:51,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:18:51,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:18:51,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-02 09:18:51,325 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-02 09:18:51,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-02 09:18:51,370 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-02 09:18:51,370 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-02 09:18:51,371 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (56 of 57 remaining) [2024-02-02 09:18:51,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (55 of 57 remaining) [2024-02-02 09:18:51,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (54 of 57 remaining) [2024-02-02 09:18:51,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (53 of 57 remaining) [2024-02-02 09:18:51,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (52 of 57 remaining) [2024-02-02 09:18:51,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT (51 of 57 remaining) [2024-02-02 09:18:51,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err5ASSERT_VIOLATIONWITNESS_INVARIANT (50 of 57 remaining) [2024-02-02 09:18:51,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err6ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 57 remaining) [2024-02-02 09:18:51,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 57 remaining) [2024-02-02 09:18:51,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err8ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 57 remaining) [2024-02-02 09:18:51,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 57 remaining) [2024-02-02 09:18:51,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err10ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 57 remaining) [2024-02-02 09:18:51,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err11ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 57 remaining) [2024-02-02 09:18:51,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 57 remaining) [2024-02-02 09:18:51,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 57 remaining) [2024-02-02 09:18:51,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 57 remaining) [2024-02-02 09:18:51,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 57 remaining) [2024-02-02 09:18:51,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 57 remaining) [2024-02-02 09:18:51,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 57 remaining) [2024-02-02 09:18:51,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 57 remaining) [2024-02-02 09:18:51,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 57 remaining) [2024-02-02 09:18:51,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 57 remaining) [2024-02-02 09:18:51,375 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 57 remaining) [2024-02-02 09:18:51,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 57 remaining) [2024-02-02 09:18:51,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 57 remaining) [2024-02-02 09:18:51,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 57 remaining) [2024-02-02 09:18:51,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 57 remaining) [2024-02-02 09:18:51,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 57 remaining) [2024-02-02 09:18:51,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 57 remaining) [2024-02-02 09:18:51,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 57 remaining) [2024-02-02 09:18:51,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (26 of 57 remaining) [2024-02-02 09:18:51,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 57 remaining) [2024-02-02 09:18:51,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 57 remaining) [2024-02-02 09:18:51,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 57 remaining) [2024-02-02 09:18:51,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 57 remaining) [2024-02-02 09:18:51,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 57 remaining) [2024-02-02 09:18:51,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 57 remaining) [2024-02-02 09:18:51,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 57 remaining) [2024-02-02 09:18:51,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err5ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 57 remaining) [2024-02-02 09:18:51,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err6ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 57 remaining) [2024-02-02 09:18:51,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 57 remaining) [2024-02-02 09:18:51,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err8ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 57 remaining) [2024-02-02 09:18:51,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 57 remaining) [2024-02-02 09:18:51,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err10ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 57 remaining) [2024-02-02 09:18:51,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err11ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 57 remaining) [2024-02-02 09:18:51,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 57 remaining) [2024-02-02 09:18:51,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 57 remaining) [2024-02-02 09:18:51,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 57 remaining) [2024-02-02 09:18:51,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 57 remaining) [2024-02-02 09:18:51,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 57 remaining) [2024-02-02 09:18:51,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 57 remaining) [2024-02-02 09:18:51,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 57 remaining) [2024-02-02 09:18:51,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 57 remaining) [2024-02-02 09:18:51,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 57 remaining) [2024-02-02 09:18:51,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 57 remaining) [2024-02-02 09:18:51,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 57 remaining) [2024-02-02 09:18:51,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 57 remaining) [2024-02-02 09:18:51,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-02-02 09:18:51,381 INFO L445 BasicCegarLoop]: Path program histogram: [7, 7, 7, 7, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:18:51,386 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-02 09:18:51,396 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-02 09:18:51,432 INFO L503 ceAbstractionStarter]: Automizer considered 30 witness invariants [2024-02-02 09:18:51,432 INFO L504 ceAbstractionStarter]: WitnessConsidered=30 [2024-02-02 09:18:51,433 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.02 09:18:51 BasicIcfg [2024-02-02 09:18:51,433 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-02 09:18:51,434 INFO L158 Benchmark]: Toolchain (without parser) took 247962.03ms. Allocated memory was 140.5MB in the beginning and 2.8GB in the end (delta: 2.7GB). Free memory was 73.2MB in the beginning and 1.2GB in the end (delta: -1.2GB). Peak memory consumption was 1.6GB. Max. memory is 16.1GB. [2024-02-02 09:18:51,434 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 140.5MB. Free memory is still 106.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-02 09:18:51,434 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 140.5MB. Free memory is still 83.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-02 09:18:51,434 INFO L158 Benchmark]: CACSL2BoogieTranslator took 669.97ms. Allocated memory is still 140.5MB. Free memory was 73.2MB in the beginning and 44.8MB in the end (delta: 28.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-02-02 09:18:51,434 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.27ms. Allocated memory is still 140.5MB. Free memory was 44.8MB in the beginning and 42.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-02 09:18:51,434 INFO L158 Benchmark]: Boogie Preprocessor took 68.70ms. Allocated memory is still 140.5MB. Free memory was 42.2MB in the beginning and 39.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-02 09:18:51,435 INFO L158 Benchmark]: RCFGBuilder took 716.66ms. Allocated memory is still 140.5MB. Free memory was 39.6MB in the beginning and 47.1MB in the end (delta: -7.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-02-02 09:18:51,435 INFO L158 Benchmark]: TraceAbstraction took 246465.54ms. Allocated memory was 140.5MB in the beginning and 2.8GB in the end (delta: 2.7GB). Free memory was 46.2MB in the beginning and 1.2GB in the end (delta: -1.2GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2024-02-02 09:18:51,436 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 140.5MB. Free memory is still 106.8MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.15ms. Allocated memory is still 140.5MB. Free memory is still 83.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 669.97ms. Allocated memory is still 140.5MB. Free memory was 73.2MB in the beginning and 44.8MB in the end (delta: 28.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.27ms. Allocated memory is still 140.5MB. Free memory was 44.8MB in the beginning and 42.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 68.70ms. Allocated memory is still 140.5MB. Free memory was 42.2MB in the beginning and 39.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 716.66ms. Allocated memory is still 140.5MB. Free memory was 39.6MB in the beginning and 47.1MB in the end (delta: -7.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 246465.54ms. Allocated memory was 140.5MB in the beginning and 2.8GB in the end (delta: 2.7GB). Free memory was 46.2MB in the beginning and 1.2GB in the end (delta: -1.2GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 767]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L708] 0 int __unbuffered_cnt = 0; [L709] 0 _Bool main$tmp_guard0; [L710] 0 _Bool main$tmp_guard1; [L712] 0 int x = 0; [L714] 0 int y = 0; [L756] 0 pthread_t t2485; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, t2485={5:0}, x=0, y=0] [L757] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_cnt],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]]]]] [L757] FCALL, FORK 0 pthread_create(&t2485, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t2485={5:0}, x=0, y=0] [L758] 0 pthread_t t2486; [L759] FCALL, FORK 0 pthread_create(&t2486, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t2485={5:0}, t2486={3:0}, x=0, y=0] [L717] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0] [L718] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[127]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L718] 1 y = 2 [L719] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[127]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=2] [L732] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=2] [L720] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=2] [L733] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[127]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L733] 2 x = 2 [L734] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=2, y=2] [L735] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=2, y=2] [L721] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[127]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L721] 1 x = 1 [L722] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=2] [L723] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=2] [L724] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[127]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=2] [L725] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=2] [L736] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[127]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L736] 2 y = 1 [L737] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[127]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L738] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L739] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[127]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L740] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L726] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[127]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L726] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L727] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[__unbuffered_cnt]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[127]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L741] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[127]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L741] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L742] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[__unbuffered_cnt]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[127]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=2, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L761] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[127]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L761] 0 main$tmp_guard0 = __unbuffered_cnt == 2 [L762] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[127]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=2, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2485={5:0}, t2486={3:0}, x=1, y=1] [L763] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L763] RET 0 assume_abort_if_not(main$tmp_guard0) [L765] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[127]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=2, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2485={5:0}, t2486={3:0}, x=1, y=1] [L767] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=2, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2485={5:0}, t2486={3:0}, x=1, y=1] - UnprovableResult [Line: 717]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 720]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 721]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 722]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 723]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 724]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 725]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 726]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 727]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 728]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 732]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 733]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 734]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 735]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 736]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 737]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 738]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 739]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 740]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 741]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 742]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 743]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 757]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 761]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 762]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 765]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 768]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 757]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - 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, 116 locations, 57 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: 246.2s, OverallIterations: 113, TraceHistogramMax: 1, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 229.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9337 SdHoareTripleChecker+Valid, 18.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8485 mSDsluCounter, 1572 SdHoareTripleChecker+Invalid, 15.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1309 mSDsCounter, 1421 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 21872 IncrementalHoareTripleChecker+Invalid, 23293 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1421 mSolverCounterUnsat, 263 mSDtfsCounter, 21872 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 639 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 555 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19687occurred in iteration=98, InterpolantAutomatonStates: 715, 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, 14.8s InterpolantComputationTime, 2008 NumberOfCodeBlocks, 2008 NumberOfCodeBlocksAsserted, 113 NumberOfCheckSat, 1868 ConstructedInterpolants, 0 QuantifiedInterpolants, 37884 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 112 InterpolantComputations, 112 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-02-02 09:18:51,466 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE