./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-01-24_13-31-21.files/SV-COMP24_unreach-call/safe022_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d8006e4b Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.i ./goblint.2024-01-24_13-31-21.files/SV-COMP24_unreach-call/safe022_tso.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-d8006e4-m [2024-02-05 10:28:08,625 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-05 10:28:08,663 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-05 10:28:08,666 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-05 10:28:08,667 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-05 10:28:08,685 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-05 10:28:08,685 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-05 10:28:08,686 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-05 10:28:08,686 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-05 10:28:08,686 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-05 10:28:08,687 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-05 10:28:08,687 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-05 10:28:08,687 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-05 10:28:08,688 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-05 10:28:08,688 INFO L153 SettingsManager]: * Use SBE=true [2024-02-05 10:28:08,688 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-05 10:28:08,689 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-05 10:28:08,689 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-05 10:28:08,689 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-05 10:28:08,689 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-05 10:28:08,690 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-05 10:28:08,690 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-05 10:28:08,691 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-05 10:28:08,691 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-05 10:28:08,691 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-05 10:28:08,691 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-05 10:28:08,692 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-05 10:28:08,692 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-05 10:28:08,692 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-05 10:28:08,693 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-05 10:28:08,693 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-05 10:28:08,693 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-05 10:28:08,693 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-05 10:28:08,694 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-05 10:28:08,694 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-05 10:28:08,694 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-05 10:28:08,694 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-05 10:28:08,695 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-05 10:28:08,695 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-05 10:28:08,695 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-05 10:28:08,695 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-05 10:28:08,701 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-05 10:28:08,702 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-05 10:28:08,702 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-05 10:28:08,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-05 10:28:08,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-05 10:28:08,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-05 10:28:08,969 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-05 10:28:08,970 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-05 10:28:08,971 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-01-24_13-31-21.files/SV-COMP24_unreach-call/safe022_tso.yml/witness.yml [2024-02-05 10:28:09,157 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-05 10:28:09,157 INFO L274 PluginConnector]: CDTParser initialized [2024-02-05 10:28:09,158 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.i [2024-02-05 10:28:10,266 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-05 10:28:10,500 INFO L384 CDTParser]: Found 1 translation units. [2024-02-05 10:28:10,501 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe022_tso.i [2024-02-05 10:28:10,516 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8b5dce60/2bd2f288d9b4484c86f520ae487e50cd/FLAG0284ce684 [2024-02-05 10:28:10,529 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8b5dce60/2bd2f288d9b4484c86f520ae487e50cd [2024-02-05 10:28:10,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-05 10:28:10,530 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-05 10:28:10,531 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-05 10:28:10,531 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-05 10:28:10,538 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-05 10:28:10,538 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 05.02 10:28:09" (1/2) ... [2024-02-05 10:28:10,539 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538a4b85 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:28:10, skipping insertion in model container [2024-02-05 10:28:10,539 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 05.02 10:28:09" (1/2) ... [2024-02-05 10:28:10,541 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3e70df8b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:28:10, skipping insertion in model container [2024-02-05 10:28:10,541 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:28:10" (2/2) ... [2024-02-05 10:28:10,541 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538a4b85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:28:10, skipping insertion in model container [2024-02-05 10:28:10,542 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:28:10" (2/2) ... [2024-02-05 10:28:10,542 INFO L86 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-05 10:28:10,839 INFO L99 nessWitnessExtractor]: Found the following entries in the witness: [2024-02-05 10:28:10,846 INFO L101 nessWitnessExtractor]: Location invariant before [L765-L765] ((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= __unbuffered_p1_EBX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (__unbuffered_p1_EBX <= 1)) && (x <= 1)) && (y <= 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-05 10:28:10,846 INFO L101 nessWitnessExtractor]: Location invariant before [L742-L742] (unsigned long )arg == 0UL [2024-02-05 10:28:10,846 INFO L101 nessWitnessExtractor]: Location invariant before [L771-L771] ((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EBX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EBX <= 1)) && (x <= 1)) && (y <= 1)) && (__unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-05 10:28:10,847 INFO L101 nessWitnessExtractor]: Location invariant before [L741-L741] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= __unbuffered_p1_EBX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (__unbuffered_p1_EBX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-05 10:28:10,847 INFO L101 nessWitnessExtractor]: Location invariant before [L745-L745] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= __unbuffered_p1_EBX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (__unbuffered_p1_EBX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-05 10:28:10,847 INFO L101 nessWitnessExtractor]: Location invariant before [L769-L769] ((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= __unbuffered_p1_EBX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (__unbuffered_p1_EBX <= 1)) && (x <= 1)) && (y <= 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-05 10:28:10,848 INFO L101 nessWitnessExtractor]: Location invariant before [L729-L729] (unsigned long )arg == 0UL [2024-02-05 10:28:10,848 INFO L101 nessWitnessExtractor]: Location invariant before [L731-L731] (((((((((((((((0 <= __unbuffered_p1_EAX) && (0 <= __unbuffered_p1_EBX)) && (0 <= x)) && (0 <= y)) && (1 <= __unbuffered_cnt)) && (__unbuffered_p1_EAX <= 1)) && (__unbuffered_p1_EBX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-05 10:28:10,848 INFO L101 nessWitnessExtractor]: Location invariant before [L724-L724] (unsigned long )arg == 0UL [2024-02-05 10:28:10,848 INFO L101 nessWitnessExtractor]: Location invariant before [L772-L772] ((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= __unbuffered_p1_EBX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (__unbuffered_p1_EBX <= 1)) && (x <= 1)) && (y <= 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-05 10:28:10,848 INFO L101 nessWitnessExtractor]: Location invariant before [L727-L727] (unsigned long )arg == 0UL [2024-02-05 10:28:10,848 INFO L101 nessWitnessExtractor]: Location invariant before [L743-L743] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= __unbuffered_p1_EBX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (__unbuffered_p1_EBX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-05 10:28:10,848 INFO L101 nessWitnessExtractor]: Location invariant before [L18-L18] expression == 0 [2024-02-05 10:28:10,849 INFO L101 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 0 [2024-02-05 10:28:10,849 INFO L101 nessWitnessExtractor]: Location invariant before [L737-L737] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= __unbuffered_p1_EBX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (__unbuffered_p1_EBX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-05 10:28:10,849 INFO L101 nessWitnessExtractor]: Location invariant before [L732-L732] (unsigned long )arg == 0UL [2024-02-05 10:28:10,849 INFO L101 nessWitnessExtractor]: Location invariant before [L766-L766] ((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= __unbuffered_p1_EBX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (__unbuffered_p1_EBX <= 1)) && (x <= 1)) && (y <= 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-05 10:28:10,849 INFO L101 nessWitnessExtractor]: Location invariant before [L744-L744] (unsigned long )arg == 0UL [2024-02-05 10:28:10,849 INFO L101 nessWitnessExtractor]: Location invariant before [L736-L736] (unsigned long )arg == 0UL [2024-02-05 10:28:10,849 INFO L101 nessWitnessExtractor]: Location invariant before [L747-L747] (unsigned long )arg == 0UL [2024-02-05 10:28:10,850 INFO L101 nessWitnessExtractor]: Location invariant before [L18-L18] ((0 <= expression) && (expression <= 1)) && (expression == 0 || expression == 1) [2024-02-05 10:28:10,850 INFO L101 nessWitnessExtractor]: Location invariant before [L18-L18] expression == 1 [2024-02-05 10:28:10,850 INFO L101 nessWitnessExtractor]: Location invariant before [L726-L726] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= __unbuffered_p1_EBX)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (__unbuffered_p1_EBX <= 1)) && (y <= 1)) && (x == 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (y == 0 || y == 1) [2024-02-05 10:28:10,850 INFO L101 nessWitnessExtractor]: Location invariant before [L721-L721] (unsigned long )arg == 0UL [2024-02-05 10:28:10,850 INFO L101 nessWitnessExtractor]: Location invariant before [L739-L739] (unsigned long )arg == 0UL [2024-02-05 10:28:10,851 INFO L101 nessWitnessExtractor]: Location invariant before [L746-L746] (((((((((((((((0 <= __unbuffered_p1_EAX) && (0 <= __unbuffered_p1_EBX)) && (0 <= x)) && (0 <= y)) && (1 <= __unbuffered_cnt)) && (__unbuffered_p1_EAX <= 1)) && (__unbuffered_p1_EBX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-05 10:28:10,851 INFO L101 nessWitnessExtractor]: Location invariant before [L725-L725] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= __unbuffered_p1_EBX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (__unbuffered_p1_EBX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-05 10:28:10,851 INFO L101 nessWitnessExtractor]: Location invariant before [L723-L723] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= __unbuffered_p1_EBX)) && (0 <= x)) && (__unbuffered_p1_EAX <= 1)) && (__unbuffered_p1_EBX <= 1)) && (x <= 1)) && (y == 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1) [2024-02-05 10:28:10,851 INFO L101 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 1 [2024-02-05 10:28:10,864 INFO L101 nessWitnessExtractor]: Location invariant before [L738-L738] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= __unbuffered_p1_EBX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (__unbuffered_p1_EBX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-05 10:28:10,864 INFO L101 nessWitnessExtractor]: Location invariant before [L730-L730] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= __unbuffered_p1_EBX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (__unbuffered_p1_EBX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-05 10:28:10,864 INFO L101 nessWitnessExtractor]: Location invariant before [L740-L740] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= __unbuffered_p1_EBX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (__unbuffered_p1_EBX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-05 10:28:10,864 INFO L101 nessWitnessExtractor]: Location invariant before [L728-L728] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= __unbuffered_p1_EBX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (__unbuffered_p1_EBX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-05 10:28:10,865 INFO L101 nessWitnessExtractor]: Location invariant before [L722-L722] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= __unbuffered_p1_EBX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (__unbuffered_p1_EBX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-02-05 10:28:10,865 INFO L101 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 1 [2024-02-05 10:28:10,865 INFO L101 nessWitnessExtractor]: Location invariant before [L761-L761] ((((((__unbuffered_cnt == 0) && (__unbuffered_p1_EAX == 0)) && (__unbuffered_p1_EBX == 0)) && (main$tmp_guard0 == (_Bool)0)) && (main$tmp_guard1 == (_Bool)0)) && (x == 0)) && (y == 0) [2024-02-05 10:28:10,919 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-02-05 10:28:11,075 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe022_tso.i[945,958] [2024-02-05 10:28:11,204 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-05 10:28:11,218 INFO L204 MainTranslator]: Completed pre-run Start Parsing Local [2024-02-05 10:28:11,255 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe022_tso.i[945,958] Start Parsing Local Start Parsing Local [2024-02-05 10:28:11,259 WARN L424 MainDispatcher]: Unable to annotate ; with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-05 10:28:11,396 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-05 10:28:11,421 INFO L208 MainTranslator]: Completed translation [2024-02-05 10:28:11,422 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:28:11 WrapperNode [2024-02-05 10:28:11,422 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-05 10:28:11,423 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-05 10:28:11,423 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-05 10:28:11,423 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-05 10:28:11,429 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:28:11" (1/1) ... [2024-02-05 10:28:11,461 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:28:11" (1/1) ... [2024-02-05 10:28:11,489 INFO L138 Inliner]: procedures = 175, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 67 [2024-02-05 10:28:11,490 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-05 10:28:11,490 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-05 10:28:11,490 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-05 10:28:11,490 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-05 10:28:11,499 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:28:11" (1/1) ... [2024-02-05 10:28:11,500 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:28:11" (1/1) ... [2024-02-05 10:28:11,502 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:28:11" (1/1) ... [2024-02-05 10:28:11,519 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]. [2024-02-05 10:28:11,520 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:28:11" (1/1) ... [2024-02-05 10:28:11,520 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:28:11" (1/1) ... [2024-02-05 10:28:11,530 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:28:11" (1/1) ... [2024-02-05 10:28:11,532 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:28:11" (1/1) ... [2024-02-05 10:28:11,534 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:28:11" (1/1) ... [2024-02-05 10:28:11,535 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:28:11" (1/1) ... [2024-02-05 10:28:11,538 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-05 10:28:11,539 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-05 10:28:11,539 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-05 10:28:11,539 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-05 10:28:11,539 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:28:11" (1/1) ... [2024-02-05 10:28:11,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-05 10:28:11,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-05 10:28:11,570 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) [2024-02-05 10:28:11,608 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 [2024-02-05 10:28:11,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-05 10:28:11,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-05 10:28:11,624 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-05 10:28:11,624 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-05 10:28:11,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-05 10:28:11,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-05 10:28:11,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-05 10:28:11,625 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-02-05 10:28:11,628 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-02-05 10:28:11,628 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-02-05 10:28:11,628 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-02-05 10:28:11,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-05 10:28:11,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-05 10:28:11,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-05 10:28:11,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-05 10:28:11,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-05 10:28:11,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-05 10:28:11,630 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-05 10:28:11,761 INFO L244 CfgBuilder]: Building ICFG [2024-02-05 10:28:11,763 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-05 10:28:12,187 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-05 10:28:12,187 INFO L293 CfgBuilder]: Performing block encoding [2024-02-05 10:28:12,344 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-05 10:28:12,345 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-05 10:28:12,347 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.02 10:28:12 BoogieIcfgContainer [2024-02-05 10:28:12,347 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-05 10:28:12,349 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-05 10:28:12,349 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-05 10:28:12,352 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-05 10:28:12,352 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 05.02 10:28:09" (1/4) ... [2024-02-05 10:28:12,353 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6143cff0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 05.02 10:28:12, skipping insertion in model container [2024-02-05 10:28:12,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 10:28:10" (2/4) ... [2024-02-05 10:28:12,353 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6143cff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:28:12, skipping insertion in model container [2024-02-05 10:28:12,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:28:11" (3/4) ... [2024-02-05 10:28:12,354 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6143cff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:28:12, skipping insertion in model container [2024-02-05 10:28:12,354 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.02 10:28:12" (4/4) ... [2024-02-05 10:28:12,355 INFO L112 eAbstractionObserver]: Analyzing ICFG safe022_tso.i [2024-02-05 10:28:12,370 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-05 10:28:12,370 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2024-02-05 10:28:12,371 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-05 10:28:12,438 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-05 10:28:12,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 73 transitions, 154 flow [2024-02-05 10:28:12,504 INFO L124 PetriNetUnfolderBase]: 1/71 cut-off events. [2024-02-05 10:28:12,505 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-05 10:28:12,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 71 events. 1/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 242 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2024-02-05 10:28:12,509 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 73 transitions, 154 flow [2024-02-05 10:28:12,512 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 71 transitions, 148 flow [2024-02-05 10:28:12,524 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-05 10:28:12,530 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;@32a8c34c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-05 10:28:12,530 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-02-05 10:28:12,532 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-05 10:28:12,532 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-05 10:28:12,533 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-05 10:28:12,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:12,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-05 10:28:12,534 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:12,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:12,539 INFO L85 PathProgramCache]: Analyzing trace with hash 10181, now seen corresponding path program 1 times [2024-02-05 10:28:12,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:12,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645032783] [2024-02-05 10:28:12,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:12,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:12,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:12,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:12,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:12,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645032783] [2024-02-05 10:28:12,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645032783] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:12,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:12,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-05 10:28:12,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427543344] [2024-02-05 10:28:12,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:12,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:28:12,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:12,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:28:12,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:28:12,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 73 [2024-02-05 10:28:12,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 71 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:12,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:12,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 73 [2024-02-05 10:28:12,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:13,484 INFO L124 PetriNetUnfolderBase]: 1643/3462 cut-off events. [2024-02-05 10:28:13,484 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-02-05 10:28:13,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6125 conditions, 3462 events. 1643/3462 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 28376 event pairs, 799 based on Foata normal form. 82/2211 useless extension candidates. Maximal degree in co-relation 6113. Up to 2531 conditions per place. [2024-02-05 10:28:13,513 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 44 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2024-02-05 10:28:13,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 75 transitions, 253 flow [2024-02-05 10:28:13,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:28:13,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:28:13,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 154 transitions. [2024-02-05 10:28:13,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7031963470319634 [2024-02-05 10:28:13,525 INFO L175 Difference]: Start difference. First operand has 77 places, 71 transitions, 148 flow. Second operand 3 states and 154 transitions. [2024-02-05 10:28:13,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 75 transitions, 253 flow [2024-02-05 10:28:13,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 75 transitions, 250 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:28:13,534 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 147 flow [2024-02-05 10:28:13,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2024-02-05 10:28:13,538 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -8 predicate places. [2024-02-05 10:28:13,538 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 147 flow [2024-02-05 10:28:13,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:13,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:13,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-05 10:28:13,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-05 10:28:13,539 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:13,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:13,540 INFO L85 PathProgramCache]: Analyzing trace with hash 303701841, now seen corresponding path program 1 times [2024-02-05 10:28:13,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:13,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512014750] [2024-02-05 10:28:13,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:13,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:13,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:13,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:13,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:13,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512014750] [2024-02-05 10:28:13,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512014750] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:13,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:13,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-05 10:28:13,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614632051] [2024-02-05 10:28:13,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:13,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-05 10:28:13,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:13,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-05 10:28:13,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-05 10:28:13,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 73 [2024-02-05 10:28:13,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 147 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:13,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:13,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 73 [2024-02-05 10:28:13,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:14,111 INFO L124 PetriNetUnfolderBase]: 1716/3526 cut-off events. [2024-02-05 10:28:14,112 INFO L125 PetriNetUnfolderBase]: For 262/262 co-relation queries the response was YES. [2024-02-05 10:28:14,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6665 conditions, 3526 events. 1716/3526 cut-off events. For 262/262 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 28264 event pairs, 772 based on Foata normal form. 384/2867 useless extension candidates. Maximal degree in co-relation 6652. Up to 2682 conditions per place. [2024-02-05 10:28:14,128 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 55 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2024-02-05 10:28:14,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 79 transitions, 302 flow [2024-02-05 10:28:14,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:28:14,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:28:14,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 160 transitions. [2024-02-05 10:28:14,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.547945205479452 [2024-02-05 10:28:14,130 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 147 flow. Second operand 4 states and 160 transitions. [2024-02-05 10:28:14,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 79 transitions, 302 flow [2024-02-05 10:28:14,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 79 transitions, 298 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-05 10:28:14,132 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 138 flow [2024-02-05 10:28:14,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2024-02-05 10:28:14,133 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -11 predicate places. [2024-02-05 10:28:14,134 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 138 flow [2024-02-05 10:28:14,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:14,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:14,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-05 10:28:14,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-05 10:28:14,134 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:14,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:14,135 INFO L85 PathProgramCache]: Analyzing trace with hash 824822840, now seen corresponding path program 1 times [2024-02-05 10:28:14,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:14,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353694441] [2024-02-05 10:28:14,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:14,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:14,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:14,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:14,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:14,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353694441] [2024-02-05 10:28:14,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353694441] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:14,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:14,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-05 10:28:14,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916838158] [2024-02-05 10:28:14,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:14,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-05 10:28:14,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:14,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-05 10:28:14,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-02-05 10:28:14,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 73 [2024-02-05 10:28:14,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 138 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:14,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:14,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 73 [2024-02-05 10:28:14,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:14,884 INFO L124 PetriNetUnfolderBase]: 2350/4626 cut-off events. [2024-02-05 10:28:14,885 INFO L125 PetriNetUnfolderBase]: For 371/371 co-relation queries the response was YES. [2024-02-05 10:28:14,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8874 conditions, 4626 events. 2350/4626 cut-off events. For 371/371 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 36415 event pairs, 1140 based on Foata normal form. 26/3383 useless extension candidates. Maximal degree in co-relation 8860. Up to 3579 conditions per place. [2024-02-05 10:28:14,913 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 60 selfloop transitions, 5 changer transitions 0/83 dead transitions. [2024-02-05 10:28:14,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 83 transitions, 326 flow [2024-02-05 10:28:14,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:28:14,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:28:14,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 146 transitions. [2024-02-05 10:28:14,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-02-05 10:28:14,919 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 138 flow. Second operand 4 states and 146 transitions. [2024-02-05 10:28:14,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 83 transitions, 326 flow [2024-02-05 10:28:14,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 83 transitions, 322 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:28:14,921 INFO L231 Difference]: Finished difference. Result has 69 places, 60 transitions, 161 flow [2024-02-05 10:28:14,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=161, PETRI_PLACES=69, PETRI_TRANSITIONS=60} [2024-02-05 10:28:14,922 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -8 predicate places. [2024-02-05 10:28:14,922 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 60 transitions, 161 flow [2024-02-05 10:28:14,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:14,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:14,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:14,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-05 10:28:14,923 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:14,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:14,923 INFO L85 PathProgramCache]: Analyzing trace with hash -201206786, now seen corresponding path program 1 times [2024-02-05 10:28:14,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:14,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725870522] [2024-02-05 10:28:14,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:14,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:14,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:14,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:14,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:14,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725870522] [2024-02-05 10:28:14,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725870522] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:14,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:14,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-05 10:28:14,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954924799] [2024-02-05 10:28:14,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:14,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-05 10:28:14,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:14,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-05 10:28:14,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-05 10:28:14,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 73 [2024-02-05 10:28:14,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 60 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:14,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:14,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 73 [2024-02-05 10:28:14,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:15,316 INFO L124 PetriNetUnfolderBase]: 1778/3306 cut-off events. [2024-02-05 10:28:15,317 INFO L125 PetriNetUnfolderBase]: For 384/410 co-relation queries the response was YES. [2024-02-05 10:28:15,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6621 conditions, 3306 events. 1778/3306 cut-off events. For 384/410 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 24279 event pairs, 123 based on Foata normal form. 390/2826 useless extension candidates. Maximal degree in co-relation 6605. Up to 2657 conditions per place. [2024-02-05 10:28:15,332 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 61 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2024-02-05 10:28:15,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 81 transitions, 343 flow [2024-02-05 10:28:15,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:28:15,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:28:15,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 165 transitions. [2024-02-05 10:28:15,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.565068493150685 [2024-02-05 10:28:15,333 INFO L175 Difference]: Start difference. First operand has 69 places, 60 transitions, 161 flow. Second operand 4 states and 165 transitions. [2024-02-05 10:28:15,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 81 transitions, 343 flow [2024-02-05 10:28:15,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 81 transitions, 331 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:28:15,335 INFO L231 Difference]: Finished difference. Result has 65 places, 55 transitions, 147 flow [2024-02-05 10:28:15,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=147, PETRI_PLACES=65, PETRI_TRANSITIONS=55} [2024-02-05 10:28:15,336 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -12 predicate places. [2024-02-05 10:28:15,336 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 55 transitions, 147 flow [2024-02-05 10:28:15,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:15,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:15,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:15,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-05 10:28:15,337 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:15,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:15,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1942442687, now seen corresponding path program 1 times [2024-02-05 10:28:15,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:15,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713797570] [2024-02-05 10:28:15,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:15,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:15,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:15,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:15,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:15,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713797570] [2024-02-05 10:28:15,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713797570] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:15,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:15,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-05 10:28:15,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099563154] [2024-02-05 10:28:15,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:15,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-05 10:28:15,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:15,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-05 10:28:15,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-02-05 10:28:15,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 73 [2024-02-05 10:28:15,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 55 transitions, 147 flow. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:15,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:15,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 73 [2024-02-05 10:28:15,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:15,913 INFO L124 PetriNetUnfolderBase]: 2406/4393 cut-off events. [2024-02-05 10:28:15,913 INFO L125 PetriNetUnfolderBase]: For 389/415 co-relation queries the response was YES. [2024-02-05 10:28:15,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8816 conditions, 4393 events. 2406/4393 cut-off events. For 389/415 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 32029 event pairs, 1990 based on Foata normal form. 29/3171 useless extension candidates. Maximal degree in co-relation 8801. Up to 3790 conditions per place. [2024-02-05 10:28:15,933 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 50 selfloop transitions, 6 changer transitions 0/70 dead transitions. [2024-02-05 10:28:15,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 70 transitions, 298 flow [2024-02-05 10:28:15,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:28:15,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:28:15,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 139 transitions. [2024-02-05 10:28:15,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.476027397260274 [2024-02-05 10:28:15,935 INFO L175 Difference]: Start difference. First operand has 65 places, 55 transitions, 147 flow. Second operand 4 states and 139 transitions. [2024-02-05 10:28:15,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 70 transitions, 298 flow [2024-02-05 10:28:15,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 70 transitions, 292 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:28:15,937 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 180 flow [2024-02-05 10:28:15,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=68, PETRI_TRANSITIONS=57} [2024-02-05 10:28:15,938 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -9 predicate places. [2024-02-05 10:28:15,938 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 180 flow [2024-02-05 10:28:15,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:15,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:15,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:15,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-05 10:28:15,939 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:15,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:15,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1914187909, now seen corresponding path program 1 times [2024-02-05 10:28:15,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:15,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731412011] [2024-02-05 10:28:15,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:15,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:15,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:16,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:16,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:16,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731412011] [2024-02-05 10:28:16,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731412011] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:16,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:16,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-05 10:28:16,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145011983] [2024-02-05 10:28:16,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:16,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-05 10:28:16,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:16,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-05 10:28:16,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-05 10:28:16,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:16,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 180 flow. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:16,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:16,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:16,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:16,601 INFO L124 PetriNetUnfolderBase]: 2079/4287 cut-off events. [2024-02-05 10:28:16,602 INFO L125 PetriNetUnfolderBase]: For 897/916 co-relation queries the response was YES. [2024-02-05 10:28:16,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8664 conditions, 4287 events. 2079/4287 cut-off events. For 897/916 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 33361 event pairs, 1324 based on Foata normal form. 20/3465 useless extension candidates. Maximal degree in co-relation 8646. Up to 3225 conditions per place. [2024-02-05 10:28:16,624 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 60 selfloop transitions, 8 changer transitions 0/82 dead transitions. [2024-02-05 10:28:16,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 82 transitions, 387 flow [2024-02-05 10:28:16,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-05 10:28:16,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-05 10:28:16,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 171 transitions. [2024-02-05 10:28:16,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4684931506849315 [2024-02-05 10:28:16,626 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 180 flow. Second operand 5 states and 171 transitions. [2024-02-05 10:28:16,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 82 transitions, 387 flow [2024-02-05 10:28:16,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 82 transitions, 381 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-05 10:28:16,629 INFO L231 Difference]: Finished difference. Result has 74 places, 63 transitions, 237 flow [2024-02-05 10:28:16,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=237, PETRI_PLACES=74, PETRI_TRANSITIONS=63} [2024-02-05 10:28:16,630 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -3 predicate places. [2024-02-05 10:28:16,630 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 63 transitions, 237 flow [2024-02-05 10:28:16,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:16,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:16,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:16,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-05 10:28:16,631 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:16,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:16,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1288565090, now seen corresponding path program 1 times [2024-02-05 10:28:16,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:16,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129266954] [2024-02-05 10:28:16,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:16,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:16,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:16,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:16,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:16,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129266954] [2024-02-05 10:28:16,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129266954] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:16,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:16,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-05 10:28:16,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057879060] [2024-02-05 10:28:16,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:16,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-05 10:28:16,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:16,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-05 10:28:16,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-05 10:28:16,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:16,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 63 transitions, 237 flow. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:16,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:16,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:16,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:17,265 INFO L124 PetriNetUnfolderBase]: 1863/3845 cut-off events. [2024-02-05 10:28:17,265 INFO L125 PetriNetUnfolderBase]: For 1455/1478 co-relation queries the response was YES. [2024-02-05 10:28:17,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8306 conditions, 3845 events. 1863/3845 cut-off events. For 1455/1478 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 29491 event pairs, 1045 based on Foata normal form. 22/3145 useless extension candidates. Maximal degree in co-relation 8284. Up to 2879 conditions per place. [2024-02-05 10:28:17,279 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 70 selfloop transitions, 10 changer transitions 0/94 dead transitions. [2024-02-05 10:28:17,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 94 transitions, 492 flow [2024-02-05 10:28:17,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:28:17,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:28:17,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 199 transitions. [2024-02-05 10:28:17,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.454337899543379 [2024-02-05 10:28:17,281 INFO L175 Difference]: Start difference. First operand has 74 places, 63 transitions, 237 flow. Second operand 6 states and 199 transitions. [2024-02-05 10:28:17,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 94 transitions, 492 flow [2024-02-05 10:28:17,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 94 transitions, 492 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-05 10:28:17,285 INFO L231 Difference]: Finished difference. Result has 83 places, 71 transitions, 325 flow [2024-02-05 10:28:17,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=325, PETRI_PLACES=83, PETRI_TRANSITIONS=71} [2024-02-05 10:28:17,285 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 6 predicate places. [2024-02-05 10:28:17,286 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 71 transitions, 325 flow [2024-02-05 10:28:17,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:17,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:17,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:17,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-05 10:28:17,286 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:17,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:17,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1842400867, now seen corresponding path program 1 times [2024-02-05 10:28:17,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:17,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173813646] [2024-02-05 10:28:17,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:17,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:17,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:17,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:17,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173813646] [2024-02-05 10:28:17,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173813646] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:17,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:17,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-05 10:28:17,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026939506] [2024-02-05 10:28:17,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:17,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-05 10:28:17,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:17,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-05 10:28:17,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-05 10:28:17,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:17,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 71 transitions, 325 flow. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:17,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:17,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:17,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:17,848 INFO L124 PetriNetUnfolderBase]: 1878/3850 cut-off events. [2024-02-05 10:28:17,848 INFO L125 PetriNetUnfolderBase]: For 2188/2202 co-relation queries the response was YES. [2024-02-05 10:28:17,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9018 conditions, 3850 events. 1878/3850 cut-off events. For 2188/2202 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 29584 event pairs, 1308 based on Foata normal form. 20/3179 useless extension candidates. Maximal degree in co-relation 8990. Up to 2939 conditions per place. [2024-02-05 10:28:17,866 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 62 selfloop transitions, 15 changer transitions 0/93 dead transitions. [2024-02-05 10:28:17,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 93 transitions, 553 flow [2024-02-05 10:28:17,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-05 10:28:17,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-05 10:28:17,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 173 transitions. [2024-02-05 10:28:17,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.473972602739726 [2024-02-05 10:28:17,868 INFO L175 Difference]: Start difference. First operand has 83 places, 71 transitions, 325 flow. Second operand 5 states and 173 transitions. [2024-02-05 10:28:17,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 93 transitions, 553 flow [2024-02-05 10:28:17,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 93 transitions, 553 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-05 10:28:17,872 INFO L231 Difference]: Finished difference. Result has 89 places, 77 transitions, 412 flow [2024-02-05 10:28:17,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=412, PETRI_PLACES=89, PETRI_TRANSITIONS=77} [2024-02-05 10:28:17,874 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 12 predicate places. [2024-02-05 10:28:17,874 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 77 transitions, 412 flow [2024-02-05 10:28:17,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:17,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:17,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:17,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-05 10:28:17,875 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:17,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:17,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1980339509, now seen corresponding path program 2 times [2024-02-05 10:28:17,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:17,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629739153] [2024-02-05 10:28:17,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:17,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:17,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:18,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:18,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:18,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629739153] [2024-02-05 10:28:18,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629739153] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:18,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:18,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-05 10:28:18,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271670459] [2024-02-05 10:28:18,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:18,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-05 10:28:18,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:18,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-05 10:28:18,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-05 10:28:18,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:18,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 77 transitions, 412 flow. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:18,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:18,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:18,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:18,541 INFO L124 PetriNetUnfolderBase]: 1878/3843 cut-off events. [2024-02-05 10:28:18,542 INFO L125 PetriNetUnfolderBase]: For 2754/2768 co-relation queries the response was YES. [2024-02-05 10:28:18,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9338 conditions, 3843 events. 1878/3843 cut-off events. For 2754/2768 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 29501 event pairs, 1307 based on Foata normal form. 20/3171 useless extension candidates. Maximal degree in co-relation 9306. Up to 2942 conditions per place. [2024-02-05 10:28:18,562 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 59 selfloop transitions, 16 changer transitions 0/91 dead transitions. [2024-02-05 10:28:18,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 91 transitions, 621 flow [2024-02-05 10:28:18,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-05 10:28:18,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-05 10:28:18,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 166 transitions. [2024-02-05 10:28:18,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4547945205479452 [2024-02-05 10:28:18,563 INFO L175 Difference]: Start difference. First operand has 89 places, 77 transitions, 412 flow. Second operand 5 states and 166 transitions. [2024-02-05 10:28:18,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 91 transitions, 621 flow [2024-02-05 10:28:18,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 91 transitions, 589 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-02-05 10:28:18,568 INFO L231 Difference]: Finished difference. Result has 91 places, 80 transitions, 453 flow [2024-02-05 10:28:18,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=453, PETRI_PLACES=91, PETRI_TRANSITIONS=80} [2024-02-05 10:28:18,569 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 14 predicate places. [2024-02-05 10:28:18,569 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 80 transitions, 453 flow [2024-02-05 10:28:18,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:18,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:18,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:18,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-05 10:28:18,570 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:18,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:18,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1533602106, now seen corresponding path program 1 times [2024-02-05 10:28:18,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:18,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381280031] [2024-02-05 10:28:18,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:18,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:18,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:18,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:18,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:18,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381280031] [2024-02-05 10:28:18,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381280031] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:18,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:18,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-05 10:28:18,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168776356] [2024-02-05 10:28:18,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:18,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-05 10:28:18,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:18,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-05 10:28:18,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-05 10:28:18,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:18,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 80 transitions, 453 flow. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:18,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:18,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:18,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:19,301 INFO L124 PetriNetUnfolderBase]: 1888/3872 cut-off events. [2024-02-05 10:28:19,302 INFO L125 PetriNetUnfolderBase]: For 3102/3116 co-relation queries the response was YES. [2024-02-05 10:28:19,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9512 conditions, 3872 events. 1888/3872 cut-off events. For 3102/3116 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 29482 event pairs, 1250 based on Foata normal form. 20/3201 useless extension candidates. Maximal degree in co-relation 9479. Up to 2938 conditions per place. [2024-02-05 10:28:19,317 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 72 selfloop transitions, 15 changer transitions 0/103 dead transitions. [2024-02-05 10:28:19,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 103 transitions, 698 flow [2024-02-05 10:28:19,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:28:19,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:28:19,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 196 transitions. [2024-02-05 10:28:19,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4474885844748858 [2024-02-05 10:28:19,320 INFO L175 Difference]: Start difference. First operand has 91 places, 80 transitions, 453 flow. Second operand 6 states and 196 transitions. [2024-02-05 10:28:19,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 103 transitions, 698 flow [2024-02-05 10:28:19,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 103 transitions, 686 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-05 10:28:19,324 INFO L231 Difference]: Finished difference. Result has 97 places, 83 transitions, 500 flow [2024-02-05 10:28:19,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=500, PETRI_PLACES=97, PETRI_TRANSITIONS=83} [2024-02-05 10:28:19,326 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 20 predicate places. [2024-02-05 10:28:19,326 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 83 transitions, 500 flow [2024-02-05 10:28:19,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:19,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:19,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:19,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-05 10:28:19,327 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:19,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:19,327 INFO L85 PathProgramCache]: Analyzing trace with hash -231962488, now seen corresponding path program 2 times [2024-02-05 10:28:19,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:19,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235210653] [2024-02-05 10:28:19,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:19,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:19,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:19,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:19,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:19,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235210653] [2024-02-05 10:28:19,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235210653] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:19,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:19,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-05 10:28:19,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252918238] [2024-02-05 10:28:19,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:19,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-05 10:28:19,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:19,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-05 10:28:19,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-05 10:28:19,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:19,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 83 transitions, 500 flow. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:19,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:19,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:19,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:19,999 INFO L124 PetriNetUnfolderBase]: 1898/3894 cut-off events. [2024-02-05 10:28:19,999 INFO L125 PetriNetUnfolderBase]: For 3599/3613 co-relation queries the response was YES. [2024-02-05 10:28:20,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9699 conditions, 3894 events. 1898/3894 cut-off events. For 3599/3613 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 29719 event pairs, 1250 based on Foata normal form. 20/3223 useless extension candidates. Maximal degree in co-relation 9663. Up to 2947 conditions per place. [2024-02-05 10:28:20,024 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 71 selfloop transitions, 16 changer transitions 0/103 dead transitions. [2024-02-05 10:28:20,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 103 transitions, 740 flow [2024-02-05 10:28:20,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:28:20,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:28:20,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 195 transitions. [2024-02-05 10:28:20,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4452054794520548 [2024-02-05 10:28:20,026 INFO L175 Difference]: Start difference. First operand has 97 places, 83 transitions, 500 flow. Second operand 6 states and 195 transitions. [2024-02-05 10:28:20,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 103 transitions, 740 flow [2024-02-05 10:28:20,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 103 transitions, 704 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-02-05 10:28:20,032 INFO L231 Difference]: Finished difference. Result has 99 places, 85 transitions, 517 flow [2024-02-05 10:28:20,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=517, PETRI_PLACES=99, PETRI_TRANSITIONS=85} [2024-02-05 10:28:20,032 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 22 predicate places. [2024-02-05 10:28:20,032 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 85 transitions, 517 flow [2024-02-05 10:28:20,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:20,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:20,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:20,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-02-05 10:28:20,033 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:20,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:20,034 INFO L85 PathProgramCache]: Analyzing trace with hash 435749522, now seen corresponding path program 3 times [2024-02-05 10:28:20,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:20,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281269946] [2024-02-05 10:28:20,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:20,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:20,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:20,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:20,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:20,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281269946] [2024-02-05 10:28:20,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281269946] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:20,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:20,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-05 10:28:20,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190505164] [2024-02-05 10:28:20,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:20,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-05 10:28:20,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:20,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-05 10:28:20,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-05 10:28:20,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:20,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 85 transitions, 517 flow. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:20,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:20,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:20,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:20,681 INFO L124 PetriNetUnfolderBase]: 1888/3857 cut-off events. [2024-02-05 10:28:20,682 INFO L125 PetriNetUnfolderBase]: For 3578/3592 co-relation queries the response was YES. [2024-02-05 10:28:20,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9628 conditions, 3857 events. 1888/3857 cut-off events. For 3578/3592 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 29428 event pairs, 1272 based on Foata normal form. 20/3183 useless extension candidates. Maximal degree in co-relation 9591. Up to 2944 conditions per place. [2024-02-05 10:28:20,708 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 67 selfloop transitions, 17 changer transitions 0/100 dead transitions. [2024-02-05 10:28:20,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 100 transitions, 724 flow [2024-02-05 10:28:20,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:28:20,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:28:20,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 191 transitions. [2024-02-05 10:28:20,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4360730593607306 [2024-02-05 10:28:20,710 INFO L175 Difference]: Start difference. First operand has 99 places, 85 transitions, 517 flow. Second operand 6 states and 191 transitions. [2024-02-05 10:28:20,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 100 transitions, 724 flow [2024-02-05 10:28:20,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 100 transitions, 705 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-02-05 10:28:20,717 INFO L231 Difference]: Finished difference. Result has 103 places, 86 transitions, 545 flow [2024-02-05 10:28:20,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=545, PETRI_PLACES=103, PETRI_TRANSITIONS=86} [2024-02-05 10:28:20,718 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 26 predicate places. [2024-02-05 10:28:20,718 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 86 transitions, 545 flow [2024-02-05 10:28:20,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:20,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:20,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:20,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-02-05 10:28:20,719 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:20,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:20,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1606047879, now seen corresponding path program 1 times [2024-02-05 10:28:20,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:20,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990700567] [2024-02-05 10:28:20,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:20,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:20,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:20,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:20,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990700567] [2024-02-05 10:28:20,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990700567] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:20,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:20,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-05 10:28:20,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699075730] [2024-02-05 10:28:20,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:20,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-05 10:28:20,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:20,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-05 10:28:20,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-05 10:28:20,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:28:20,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 86 transitions, 545 flow. Second operand has 7 states, 7 states have (on average 32.42857142857143) internal successors, (227), 7 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:20,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:20,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:28:20,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:21,303 INFO L124 PetriNetUnfolderBase]: 1376/2887 cut-off events. [2024-02-05 10:28:21,304 INFO L125 PetriNetUnfolderBase]: For 3441/3453 co-relation queries the response was YES. [2024-02-05 10:28:21,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7401 conditions, 2887 events. 1376/2887 cut-off events. For 3441/3453 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 21376 event pairs, 650 based on Foata normal form. 38/2436 useless extension candidates. Maximal degree in co-relation 7363. Up to 1961 conditions per place. [2024-02-05 10:28:21,329 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 62 selfloop transitions, 26 changer transitions 0/113 dead transitions. [2024-02-05 10:28:21,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 113 transitions, 815 flow [2024-02-05 10:28:21,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:28:21,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:28:21,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 256 transitions. [2024-02-05 10:28:21,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5844748858447488 [2024-02-05 10:28:21,331 INFO L175 Difference]: Start difference. First operand has 103 places, 86 transitions, 545 flow. Second operand 6 states and 256 transitions. [2024-02-05 10:28:21,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 113 transitions, 815 flow [2024-02-05 10:28:21,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 113 transitions, 803 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-05 10:28:21,338 INFO L231 Difference]: Finished difference. Result has 109 places, 90 transitions, 631 flow [2024-02-05 10:28:21,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=631, PETRI_PLACES=109, PETRI_TRANSITIONS=90} [2024-02-05 10:28:21,338 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 32 predicate places. [2024-02-05 10:28:21,339 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 90 transitions, 631 flow [2024-02-05 10:28:21,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.42857142857143) internal successors, (227), 7 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:21,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:21,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:21,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-02-05 10:28:21,339 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:21,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:21,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1501501031, now seen corresponding path program 1 times [2024-02-05 10:28:21,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:21,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413086161] [2024-02-05 10:28:21,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:21,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:21,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:21,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:21,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:21,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413086161] [2024-02-05 10:28:21,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413086161] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:21,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:21,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:28:21,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854806832] [2024-02-05 10:28:21,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:21,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:28:21,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:21,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:28:21,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:28:21,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:21,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 90 transitions, 631 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:21,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:21,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:21,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:22,162 INFO L124 PetriNetUnfolderBase]: 1825/3715 cut-off events. [2024-02-05 10:28:22,162 INFO L125 PetriNetUnfolderBase]: For 5672/5686 co-relation queries the response was YES. [2024-02-05 10:28:22,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9970 conditions, 3715 events. 1825/3715 cut-off events. For 5672/5686 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 27447 event pairs, 1186 based on Foata normal form. 34/3238 useless extension candidates. Maximal degree in co-relation 9929. Up to 2701 conditions per place. [2024-02-05 10:28:22,181 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 79 selfloop transitions, 25 changer transitions 0/120 dead transitions. [2024-02-05 10:28:22,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 120 transitions, 959 flow [2024-02-05 10:28:22,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:28:22,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:28:22,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 250 transitions. [2024-02-05 10:28:22,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4280821917808219 [2024-02-05 10:28:22,182 INFO L175 Difference]: Start difference. First operand has 109 places, 90 transitions, 631 flow. Second operand 8 states and 250 transitions. [2024-02-05 10:28:22,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 120 transitions, 959 flow [2024-02-05 10:28:22,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 120 transitions, 917 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-02-05 10:28:22,190 INFO L231 Difference]: Finished difference. Result has 114 places, 94 transitions, 684 flow [2024-02-05 10:28:22,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=595, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=684, PETRI_PLACES=114, PETRI_TRANSITIONS=94} [2024-02-05 10:28:22,191 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 37 predicate places. [2024-02-05 10:28:22,191 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 94 transitions, 684 flow [2024-02-05 10:28:22,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:22,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:22,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:22,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-02-05 10:28:22,192 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:22,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:22,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1058266439, now seen corresponding path program 2 times [2024-02-05 10:28:22,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:22,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270061049] [2024-02-05 10:28:22,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:22,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:22,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:22,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:22,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:22,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270061049] [2024-02-05 10:28:22,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270061049] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:22,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:22,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-05 10:28:22,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683373947] [2024-02-05 10:28:22,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:22,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-05 10:28:22,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:22,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-05 10:28:22,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-02-05 10:28:22,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:28:22,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 94 transitions, 684 flow. Second operand has 7 states, 7 states have (on average 32.42857142857143) internal successors, (227), 7 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:22,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:22,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:28:22,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:22,780 INFO L124 PetriNetUnfolderBase]: 1348/2852 cut-off events. [2024-02-05 10:28:22,780 INFO L125 PetriNetUnfolderBase]: For 5283/5292 co-relation queries the response was YES. [2024-02-05 10:28:22,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7885 conditions, 2852 events. 1348/2852 cut-off events. For 5283/5292 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 21129 event pairs, 873 based on Foata normal form. 16/2461 useless extension candidates. Maximal degree in co-relation 7843. Up to 2102 conditions per place. [2024-02-05 10:28:22,800 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 64 selfloop transitions, 21 changer transitions 0/110 dead transitions. [2024-02-05 10:28:22,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 110 transitions, 902 flow [2024-02-05 10:28:22,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:28:22,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:28:22,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 246 transitions. [2024-02-05 10:28:22,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5616438356164384 [2024-02-05 10:28:22,802 INFO L175 Difference]: Start difference. First operand has 114 places, 94 transitions, 684 flow. Second operand 6 states and 246 transitions. [2024-02-05 10:28:22,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 110 transitions, 902 flow [2024-02-05 10:28:22,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 110 transitions, 845 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-02-05 10:28:22,811 INFO L231 Difference]: Finished difference. Result has 115 places, 94 transitions, 675 flow [2024-02-05 10:28:22,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=627, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=675, PETRI_PLACES=115, PETRI_TRANSITIONS=94} [2024-02-05 10:28:22,811 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 38 predicate places. [2024-02-05 10:28:22,811 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 94 transitions, 675 flow [2024-02-05 10:28:22,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.42857142857143) internal successors, (227), 7 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:22,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:22,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:22,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-02-05 10:28:22,812 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:22,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:22,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1450233871, now seen corresponding path program 1 times [2024-02-05 10:28:22,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:22,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383837096] [2024-02-05 10:28:22,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:22,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:22,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:22,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:22,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:23,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383837096] [2024-02-05 10:28:23,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383837096] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:23,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:23,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-05 10:28:23,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246872071] [2024-02-05 10:28:23,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:23,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-05 10:28:23,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:23,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-05 10:28:23,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-05 10:28:23,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:28:23,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 94 transitions, 675 flow. Second operand has 7 states, 7 states have (on average 32.42857142857143) internal successors, (227), 7 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:23,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:23,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:28:23,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:23,424 INFO L124 PetriNetUnfolderBase]: 1274/2680 cut-off events. [2024-02-05 10:28:23,424 INFO L125 PetriNetUnfolderBase]: For 5706/5715 co-relation queries the response was YES. [2024-02-05 10:28:23,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7526 conditions, 2680 events. 1274/2680 cut-off events. For 5706/5715 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 19337 event pairs, 782 based on Foata normal form. 32/2357 useless extension candidates. Maximal degree in co-relation 7485. Up to 1902 conditions per place. [2024-02-05 10:28:23,443 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 73 selfloop transitions, 22 changer transitions 0/120 dead transitions. [2024-02-05 10:28:23,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 120 transitions, 953 flow [2024-02-05 10:28:23,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:28:23,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:28:23,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 256 transitions. [2024-02-05 10:28:23,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5844748858447488 [2024-02-05 10:28:23,445 INFO L175 Difference]: Start difference. First operand has 115 places, 94 transitions, 675 flow. Second operand 6 states and 256 transitions. [2024-02-05 10:28:23,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 120 transitions, 953 flow [2024-02-05 10:28:23,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 120 transitions, 917 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-05 10:28:23,454 INFO L231 Difference]: Finished difference. Result has 118 places, 98 transitions, 726 flow [2024-02-05 10:28:23,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=639, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=726, PETRI_PLACES=118, PETRI_TRANSITIONS=98} [2024-02-05 10:28:23,454 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 41 predicate places. [2024-02-05 10:28:23,454 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 98 transitions, 726 flow [2024-02-05 10:28:23,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.42857142857143) internal successors, (227), 7 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:23,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:23,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:23,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-02-05 10:28:23,455 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:23,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:23,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1341863663, now seen corresponding path program 2 times [2024-02-05 10:28:23,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:23,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963481679] [2024-02-05 10:28:23,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:23,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:23,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:23,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:23,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963481679] [2024-02-05 10:28:23,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963481679] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:23,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:23,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-05 10:28:23,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269483425] [2024-02-05 10:28:23,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:23,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-05 10:28:23,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:23,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-05 10:28:23,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-05 10:28:23,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:28:23,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 98 transitions, 726 flow. Second operand has 7 states, 7 states have (on average 32.42857142857143) internal successors, (227), 7 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:23,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:23,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:28:23,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:24,076 INFO L124 PetriNetUnfolderBase]: 1314/2750 cut-off events. [2024-02-05 10:28:24,076 INFO L125 PetriNetUnfolderBase]: For 7194/7208 co-relation queries the response was YES. [2024-02-05 10:28:24,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8108 conditions, 2750 events. 1314/2750 cut-off events. For 7194/7208 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 19802 event pairs, 786 based on Foata normal form. 19/2464 useless extension candidates. Maximal degree in co-relation 8065. Up to 1920 conditions per place. [2024-02-05 10:28:24,096 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 71 selfloop transitions, 24 changer transitions 0/120 dead transitions. [2024-02-05 10:28:24,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 120 transitions, 1000 flow [2024-02-05 10:28:24,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-05 10:28:24,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-05 10:28:24,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 219 transitions. [2024-02-05 10:28:24,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-02-05 10:28:24,098 INFO L175 Difference]: Start difference. First operand has 118 places, 98 transitions, 726 flow. Second operand 5 states and 219 transitions. [2024-02-05 10:28:24,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 120 transitions, 1000 flow [2024-02-05 10:28:24,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 120 transitions, 985 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-02-05 10:28:24,112 INFO L231 Difference]: Finished difference. Result has 121 places, 100 transitions, 783 flow [2024-02-05 10:28:24,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=783, PETRI_PLACES=121, PETRI_TRANSITIONS=100} [2024-02-05 10:28:24,113 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 44 predicate places. [2024-02-05 10:28:24,113 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 100 transitions, 783 flow [2024-02-05 10:28:24,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.42857142857143) internal successors, (227), 7 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:24,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:24,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:24,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-02-05 10:28:24,114 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:24,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:24,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1753253217, now seen corresponding path program 3 times [2024-02-05 10:28:24,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:24,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793943129] [2024-02-05 10:28:24,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:24,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:24,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:24,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:24,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:24,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793943129] [2024-02-05 10:28:24,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793943129] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:24,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:24,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-05 10:28:24,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930587244] [2024-02-05 10:28:24,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:24,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-05 10:28:24,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:24,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-05 10:28:24,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-02-05 10:28:24,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:28:24,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 100 transitions, 783 flow. Second operand has 7 states, 7 states have (on average 32.42857142857143) internal successors, (227), 7 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:24,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:24,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:28:24,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:24,693 INFO L124 PetriNetUnfolderBase]: 1298/2726 cut-off events. [2024-02-05 10:28:24,693 INFO L125 PetriNetUnfolderBase]: For 7872/7886 co-relation queries the response was YES. [2024-02-05 10:28:24,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8180 conditions, 2726 events. 1298/2726 cut-off events. For 7872/7886 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 19677 event pairs, 800 based on Foata normal form. 19/2440 useless extension candidates. Maximal degree in co-relation 8135. Up to 2018 conditions per place. [2024-02-05 10:28:24,710 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 68 selfloop transitions, 20 changer transitions 0/113 dead transitions. [2024-02-05 10:28:24,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 113 transitions, 995 flow [2024-02-05 10:28:24,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:28:24,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:28:24,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 179 transitions. [2024-02-05 10:28:24,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.613013698630137 [2024-02-05 10:28:24,711 INFO L175 Difference]: Start difference. First operand has 121 places, 100 transitions, 783 flow. Second operand 4 states and 179 transitions. [2024-02-05 10:28:24,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 113 transitions, 995 flow [2024-02-05 10:28:24,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 113 transitions, 968 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-02-05 10:28:24,723 INFO L231 Difference]: Finished difference. Result has 123 places, 100 transitions, 815 flow [2024-02-05 10:28:24,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=815, PETRI_PLACES=123, PETRI_TRANSITIONS=100} [2024-02-05 10:28:24,724 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 46 predicate places. [2024-02-05 10:28:24,724 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 100 transitions, 815 flow [2024-02-05 10:28:24,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.42857142857143) internal successors, (227), 7 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:24,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:24,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:24,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-02-05 10:28:24,725 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:24,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:24,725 INFO L85 PathProgramCache]: Analyzing trace with hash -511600905, now seen corresponding path program 2 times [2024-02-05 10:28:24,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:24,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523387321] [2024-02-05 10:28:24,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:24,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:24,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:24,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:24,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:24,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523387321] [2024-02-05 10:28:24,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523387321] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:24,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:24,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:28:24,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960145082] [2024-02-05 10:28:24,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:24,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:28:24,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:24,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:28:24,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:28:24,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:24,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 100 transitions, 815 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:24,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:24,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:24,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:25,405 INFO L124 PetriNetUnfolderBase]: 1769/3567 cut-off events. [2024-02-05 10:28:25,405 INFO L125 PetriNetUnfolderBase]: For 10224/10235 co-relation queries the response was YES. [2024-02-05 10:28:25,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10636 conditions, 3567 events. 1769/3567 cut-off events. For 10224/10235 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 25413 event pairs, 762 based on Foata normal form. 23/3228 useless extension candidates. Maximal degree in co-relation 10590. Up to 2468 conditions per place. [2024-02-05 10:28:25,428 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 86 selfloop transitions, 36 changer transitions 0/138 dead transitions. [2024-02-05 10:28:25,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 138 transitions, 1200 flow [2024-02-05 10:28:25,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:28:25,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:28:25,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 237 transitions. [2024-02-05 10:28:25,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4637964774951076 [2024-02-05 10:28:25,430 INFO L175 Difference]: Start difference. First operand has 123 places, 100 transitions, 815 flow. Second operand 7 states and 237 transitions. [2024-02-05 10:28:25,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 138 transitions, 1200 flow [2024-02-05 10:28:25,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 138 transitions, 1160 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-05 10:28:25,450 INFO L231 Difference]: Finished difference. Result has 128 places, 105 transitions, 906 flow [2024-02-05 10:28:25,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=775, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=906, PETRI_PLACES=128, PETRI_TRANSITIONS=105} [2024-02-05 10:28:25,451 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 51 predicate places. [2024-02-05 10:28:25,451 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 105 transitions, 906 flow [2024-02-05 10:28:25,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:25,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:25,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:25,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-02-05 10:28:25,451 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:25,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:25,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1773746411, now seen corresponding path program 1 times [2024-02-05 10:28:25,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:25,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092424708] [2024-02-05 10:28:25,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:25,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:25,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:25,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:25,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092424708] [2024-02-05 10:28:25,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092424708] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:25,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:25,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:28:25,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144364157] [2024-02-05 10:28:25,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:25,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:28:25,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:25,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:28:25,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:28:25,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:25,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 105 transitions, 906 flow. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:25,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:25,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:25,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:26,205 INFO L124 PetriNetUnfolderBase]: 1868/3745 cut-off events. [2024-02-05 10:28:26,205 INFO L125 PetriNetUnfolderBase]: For 11821/11902 co-relation queries the response was YES. [2024-02-05 10:28:26,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11587 conditions, 3745 events. 1868/3745 cut-off events. For 11821/11902 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 26501 event pairs, 841 based on Foata normal form. 44/3392 useless extension candidates. Maximal degree in co-relation 11539. Up to 2572 conditions per place. [2024-02-05 10:28:26,228 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 80 selfloop transitions, 36 changer transitions 0/134 dead transitions. [2024-02-05 10:28:26,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 134 transitions, 1219 flow [2024-02-05 10:28:26,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:28:26,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:28:26,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 230 transitions. [2024-02-05 10:28:26,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4500978473581213 [2024-02-05 10:28:26,229 INFO L175 Difference]: Start difference. First operand has 128 places, 105 transitions, 906 flow. Second operand 7 states and 230 transitions. [2024-02-05 10:28:26,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 134 transitions, 1219 flow [2024-02-05 10:28:26,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 134 transitions, 1169 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-02-05 10:28:26,249 INFO L231 Difference]: Finished difference. Result has 131 places, 105 transitions, 937 flow [2024-02-05 10:28:26,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=937, PETRI_PLACES=131, PETRI_TRANSITIONS=105} [2024-02-05 10:28:26,249 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 54 predicate places. [2024-02-05 10:28:26,250 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 105 transitions, 937 flow [2024-02-05 10:28:26,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:26,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:26,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:26,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-02-05 10:28:26,250 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:26,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:26,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1003816937, now seen corresponding path program 3 times [2024-02-05 10:28:26,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:26,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95149562] [2024-02-05 10:28:26,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:26,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:26,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:26,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:26,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95149562] [2024-02-05 10:28:26,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95149562] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:26,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:26,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:28:26,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173200282] [2024-02-05 10:28:26,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:26,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:28:26,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:26,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:28:26,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:28:26,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:26,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 105 transitions, 937 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:26,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:26,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:26,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:27,015 INFO L124 PetriNetUnfolderBase]: 1709/3471 cut-off events. [2024-02-05 10:28:27,015 INFO L125 PetriNetUnfolderBase]: For 11352/11363 co-relation queries the response was YES. [2024-02-05 10:28:27,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10791 conditions, 3471 events. 1709/3471 cut-off events. For 11352/11363 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 24654 event pairs, 1054 based on Foata normal form. 35/3144 useless extension candidates. Maximal degree in co-relation 10742. Up to 2633 conditions per place. [2024-02-05 10:28:27,037 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 86 selfloop transitions, 25 changer transitions 0/127 dead transitions. [2024-02-05 10:28:27,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 127 transitions, 1228 flow [2024-02-05 10:28:27,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:28:27,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:28:27,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 224 transitions. [2024-02-05 10:28:27,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4383561643835616 [2024-02-05 10:28:27,039 INFO L175 Difference]: Start difference. First operand has 131 places, 105 transitions, 937 flow. Second operand 7 states and 224 transitions. [2024-02-05 10:28:27,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 127 transitions, 1228 flow [2024-02-05 10:28:27,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 127 transitions, 1156 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-02-05 10:28:27,057 INFO L231 Difference]: Finished difference. Result has 132 places, 105 transitions, 923 flow [2024-02-05 10:28:27,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=865, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=923, PETRI_PLACES=132, PETRI_TRANSITIONS=105} [2024-02-05 10:28:27,058 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 55 predicate places. [2024-02-05 10:28:27,058 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 105 transitions, 923 flow [2024-02-05 10:28:27,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:27,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:27,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:27,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-02-05 10:28:27,059 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:27,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:27,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1289748371, now seen corresponding path program 2 times [2024-02-05 10:28:27,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:27,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81568815] [2024-02-05 10:28:27,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:27,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:27,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:27,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:27,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:27,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81568815] [2024-02-05 10:28:27,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81568815] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:27,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:27,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:28:27,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323930149] [2024-02-05 10:28:27,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:27,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:28:27,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:27,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:28:27,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:28:27,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:27,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 105 transitions, 923 flow. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:27,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:27,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:27,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:27,818 INFO L124 PetriNetUnfolderBase]: 1788/3593 cut-off events. [2024-02-05 10:28:27,819 INFO L125 PetriNetUnfolderBase]: For 11996/12071 co-relation queries the response was YES. [2024-02-05 10:28:27,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11173 conditions, 3593 events. 1788/3593 cut-off events. For 11996/12071 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 25439 event pairs, 1012 based on Foata normal form. 47/3240 useless extension candidates. Maximal degree in co-relation 11123. Up to 2746 conditions per place. [2024-02-05 10:28:27,841 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 84 selfloop transitions, 25 changer transitions 0/127 dead transitions. [2024-02-05 10:28:27,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 127 transitions, 1192 flow [2024-02-05 10:28:27,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:28:27,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:28:27,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 222 transitions. [2024-02-05 10:28:27,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4344422700587084 [2024-02-05 10:28:27,843 INFO L175 Difference]: Start difference. First operand has 132 places, 105 transitions, 923 flow. Second operand 7 states and 222 transitions. [2024-02-05 10:28:27,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 127 transitions, 1192 flow [2024-02-05 10:28:27,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 127 transitions, 1134 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-02-05 10:28:27,862 INFO L231 Difference]: Finished difference. Result has 133 places, 105 transitions, 925 flow [2024-02-05 10:28:27,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=865, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=925, PETRI_PLACES=133, PETRI_TRANSITIONS=105} [2024-02-05 10:28:27,862 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 56 predicate places. [2024-02-05 10:28:27,863 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 105 transitions, 925 flow [2024-02-05 10:28:27,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:27,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:27,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:27,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-02-05 10:28:27,863 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:27,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:27,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1652833131, now seen corresponding path program 1 times [2024-02-05 10:28:27,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:27,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944128005] [2024-02-05 10:28:27,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:27,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:27,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:28,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:28,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:28,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944128005] [2024-02-05 10:28:28,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944128005] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:28,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:28,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:28:28,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628348257] [2024-02-05 10:28:28,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:28,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:28:28,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:28,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:28:28,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:28:28,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:28,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 105 transitions, 925 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:28,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:28,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:28,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:28,603 INFO L124 PetriNetUnfolderBase]: 1768/3553 cut-off events. [2024-02-05 10:28:28,603 INFO L125 PetriNetUnfolderBase]: For 12354/12428 co-relation queries the response was YES. [2024-02-05 10:28:28,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11239 conditions, 3553 events. 1768/3553 cut-off events. For 12354/12428 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 25121 event pairs, 1017 based on Foata normal form. 53/3199 useless extension candidates. Maximal degree in co-relation 11188. Up to 2492 conditions per place. [2024-02-05 10:28:28,627 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 89 selfloop transitions, 27 changer transitions 0/134 dead transitions. [2024-02-05 10:28:28,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 134 transitions, 1232 flow [2024-02-05 10:28:28,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:28:28,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:28:28,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 231 transitions. [2024-02-05 10:28:28,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520547945205479 [2024-02-05 10:28:28,630 INFO L175 Difference]: Start difference. First operand has 133 places, 105 transitions, 925 flow. Second operand 7 states and 231 transitions. [2024-02-05 10:28:28,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 134 transitions, 1232 flow [2024-02-05 10:28:28,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 134 transitions, 1180 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-02-05 10:28:28,651 INFO L231 Difference]: Finished difference. Result has 134 places, 105 transitions, 933 flow [2024-02-05 10:28:28,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=873, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=933, PETRI_PLACES=134, PETRI_TRANSITIONS=105} [2024-02-05 10:28:28,652 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 57 predicate places. [2024-02-05 10:28:28,652 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 105 transitions, 933 flow [2024-02-05 10:28:28,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:28,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:28,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:28,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-02-05 10:28:28,653 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:28,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:28,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1003792163, now seen corresponding path program 1 times [2024-02-05 10:28:28,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:28,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683606926] [2024-02-05 10:28:28,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:28,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:28,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:28,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:28,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:28,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683606926] [2024-02-05 10:28:28,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683606926] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:28,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:28,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:28:28,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142718175] [2024-02-05 10:28:28,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:28,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:28:28,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:28,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:28:28,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:28:28,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:28,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 105 transitions, 933 flow. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:28,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:28,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:28,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:29,320 INFO L124 PetriNetUnfolderBase]: 1689/3442 cut-off events. [2024-02-05 10:28:29,320 INFO L125 PetriNetUnfolderBase]: For 12025/12036 co-relation queries the response was YES. [2024-02-05 10:28:29,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10993 conditions, 3442 events. 1689/3442 cut-off events. For 12025/12036 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 24453 event pairs, 1034 based on Foata normal form. 17/3097 useless extension candidates. Maximal degree in co-relation 10941. Up to 2392 conditions per place. [2024-02-05 10:28:29,345 INFO L140 encePairwiseOnDemand]: 60/73 looper letters, 95 selfloop transitions, 32 changer transitions 0/143 dead transitions. [2024-02-05 10:28:29,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 143 transitions, 1309 flow [2024-02-05 10:28:29,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:28:29,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:28:29,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 242 transitions. [2024-02-05 10:28:29,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4735812133072407 [2024-02-05 10:28:29,346 INFO L175 Difference]: Start difference. First operand has 134 places, 105 transitions, 933 flow. Second operand 7 states and 242 transitions. [2024-02-05 10:28:29,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 143 transitions, 1309 flow [2024-02-05 10:28:29,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 143 transitions, 1251 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-02-05 10:28:29,367 INFO L231 Difference]: Finished difference. Result has 136 places, 110 transitions, 995 flow [2024-02-05 10:28:29,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=879, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=995, PETRI_PLACES=136, PETRI_TRANSITIONS=110} [2024-02-05 10:28:29,368 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 59 predicate places. [2024-02-05 10:28:29,368 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 110 transitions, 995 flow [2024-02-05 10:28:29,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:29,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:29,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:29,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-02-05 10:28:29,369 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:29,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:29,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1501477121, now seen corresponding path program 2 times [2024-02-05 10:28:29,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:29,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238657301] [2024-02-05 10:28:29,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:29,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:29,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:29,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:29,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:29,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238657301] [2024-02-05 10:28:29,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238657301] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:29,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:29,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:28:29,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676480360] [2024-02-05 10:28:29,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:29,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:28:29,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:29,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:28:29,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:28:29,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:29,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 110 transitions, 995 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:29,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:29,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:29,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:30,201 INFO L124 PetriNetUnfolderBase]: 2045/4031 cut-off events. [2024-02-05 10:28:30,201 INFO L125 PetriNetUnfolderBase]: For 15293/15458 co-relation queries the response was YES. [2024-02-05 10:28:30,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13805 conditions, 4031 events. 2045/4031 cut-off events. For 15293/15458 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 28345 event pairs, 1065 based on Foata normal form. 50/3656 useless extension candidates. Maximal degree in co-relation 13751. Up to 2591 conditions per place. [2024-02-05 10:28:30,229 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 100 selfloop transitions, 37 changer transitions 0/157 dead transitions. [2024-02-05 10:28:30,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 157 transitions, 1574 flow [2024-02-05 10:28:30,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:28:30,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:28:30,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 236 transitions. [2024-02-05 10:28:30,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.461839530332681 [2024-02-05 10:28:30,231 INFO L175 Difference]: Start difference. First operand has 136 places, 110 transitions, 995 flow. Second operand 7 states and 236 transitions. [2024-02-05 10:28:30,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 157 transitions, 1574 flow [2024-02-05 10:28:30,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 157 transitions, 1500 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-02-05 10:28:30,262 INFO L231 Difference]: Finished difference. Result has 140 places, 123 transitions, 1211 flow [2024-02-05 10:28:30,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=943, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1211, PETRI_PLACES=140, PETRI_TRANSITIONS=123} [2024-02-05 10:28:30,263 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 63 predicate places. [2024-02-05 10:28:30,263 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 123 transitions, 1211 flow [2024-02-05 10:28:30,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:30,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:30,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:30,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-02-05 10:28:30,263 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:30,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:30,264 INFO L85 PathProgramCache]: Analyzing trace with hash -227702687, now seen corresponding path program 2 times [2024-02-05 10:28:30,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:30,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888317317] [2024-02-05 10:28:30,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:30,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:30,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:30,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:30,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:30,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888317317] [2024-02-05 10:28:30,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888317317] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:30,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:30,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:28:30,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817686705] [2024-02-05 10:28:30,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:30,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:28:30,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:30,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:28:30,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:28:30,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:30,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 123 transitions, 1211 flow. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:30,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:30,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:30,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:30,967 INFO L124 PetriNetUnfolderBase]: 1840/3694 cut-off events. [2024-02-05 10:28:30,967 INFO L125 PetriNetUnfolderBase]: For 14429/14449 co-relation queries the response was YES. [2024-02-05 10:28:30,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12977 conditions, 3694 events. 1840/3694 cut-off events. For 14429/14449 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 26147 event pairs, 1041 based on Foata normal form. 29/3357 useless extension candidates. Maximal degree in co-relation 12920. Up to 2458 conditions per place. [2024-02-05 10:28:30,993 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 92 selfloop transitions, 41 changer transitions 0/149 dead transitions. [2024-02-05 10:28:30,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 149 transitions, 1572 flow [2024-02-05 10:28:30,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:28:30,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:28:30,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 230 transitions. [2024-02-05 10:28:30,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4500978473581213 [2024-02-05 10:28:30,994 INFO L175 Difference]: Start difference. First operand has 140 places, 123 transitions, 1211 flow. Second operand 7 states and 230 transitions. [2024-02-05 10:28:30,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 149 transitions, 1572 flow [2024-02-05 10:28:31,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 149 transitions, 1538 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-02-05 10:28:31,025 INFO L231 Difference]: Finished difference. Result has 145 places, 123 transitions, 1271 flow [2024-02-05 10:28:31,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1177, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1271, PETRI_PLACES=145, PETRI_TRANSITIONS=123} [2024-02-05 10:28:31,025 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 68 predicate places. [2024-02-05 10:28:31,025 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 123 transitions, 1271 flow [2024-02-05 10:28:31,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:31,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:31,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:31,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-02-05 10:28:31,026 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:31,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:31,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1753198359, now seen corresponding path program 3 times [2024-02-05 10:28:31,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:31,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419332190] [2024-02-05 10:28:31,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:31,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:31,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:31,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:31,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:31,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419332190] [2024-02-05 10:28:31,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419332190] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:31,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:31,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:28:31,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606375159] [2024-02-05 10:28:31,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:31,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:28:31,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:31,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:28:31,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:28:31,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:31,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 123 transitions, 1271 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:31,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:31,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:31,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:31,799 INFO L124 PetriNetUnfolderBase]: 1953/3873 cut-off events. [2024-02-05 10:28:31,799 INFO L125 PetriNetUnfolderBase]: For 17725/17882 co-relation queries the response was YES. [2024-02-05 10:28:31,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13783 conditions, 3873 events. 1953/3873 cut-off events. For 17725/17882 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 27296 event pairs, 1078 based on Foata normal form. 63/3508 useless extension candidates. Maximal degree in co-relation 13725. Up to 2950 conditions per place. [2024-02-05 10:28:31,824 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 108 selfloop transitions, 19 changer transitions 0/147 dead transitions. [2024-02-05 10:28:31,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 147 transitions, 1606 flow [2024-02-05 10:28:31,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:28:31,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:28:31,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 222 transitions. [2024-02-05 10:28:31,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4344422700587084 [2024-02-05 10:28:31,826 INFO L175 Difference]: Start difference. First operand has 145 places, 123 transitions, 1271 flow. Second operand 7 states and 222 transitions. [2024-02-05 10:28:31,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 147 transitions, 1606 flow [2024-02-05 10:28:31,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 147 transitions, 1534 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-05 10:28:31,854 INFO L231 Difference]: Finished difference. Result has 149 places, 124 transitions, 1256 flow [2024-02-05 10:28:31,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1199, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1256, PETRI_PLACES=149, PETRI_TRANSITIONS=124} [2024-02-05 10:28:31,855 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 72 predicate places. [2024-02-05 10:28:31,855 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 124 transitions, 1256 flow [2024-02-05 10:28:31,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:31,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:31,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:31,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-02-05 10:28:31,855 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:31,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:31,856 INFO L85 PathProgramCache]: Analyzing trace with hash -249829455, now seen corresponding path program 3 times [2024-02-05 10:28:31,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:31,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071410359] [2024-02-05 10:28:31,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:31,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:32,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:32,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:32,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071410359] [2024-02-05 10:28:32,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071410359] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:32,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:32,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:28:32,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180233711] [2024-02-05 10:28:32,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:32,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:28:32,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:32,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:28:32,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:28:32,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:32,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 124 transitions, 1256 flow. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:32,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:32,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:32,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:32,703 INFO L124 PetriNetUnfolderBase]: 2020/3981 cut-off events. [2024-02-05 10:28:32,703 INFO L125 PetriNetUnfolderBase]: For 17394/17571 co-relation queries the response was YES. [2024-02-05 10:28:32,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14194 conditions, 3981 events. 2020/3981 cut-off events. For 17394/17571 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 27908 event pairs, 1018 based on Foata normal form. 60/3611 useless extension candidates. Maximal degree in co-relation 14134. Up to 3021 conditions per place. [2024-02-05 10:28:32,732 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 101 selfloop transitions, 33 changer transitions 0/154 dead transitions. [2024-02-05 10:28:32,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 154 transitions, 1615 flow [2024-02-05 10:28:32,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:28:32,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:28:32,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 250 transitions. [2024-02-05 10:28:32,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4280821917808219 [2024-02-05 10:28:32,734 INFO L175 Difference]: Start difference. First operand has 149 places, 124 transitions, 1256 flow. Second operand 8 states and 250 transitions. [2024-02-05 10:28:32,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 154 transitions, 1615 flow [2024-02-05 10:28:32,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 154 transitions, 1556 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-02-05 10:28:32,767 INFO L231 Difference]: Finished difference. Result has 152 places, 128 transitions, 1315 flow [2024-02-05 10:28:32,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1197, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1315, PETRI_PLACES=152, PETRI_TRANSITIONS=128} [2024-02-05 10:28:32,768 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 75 predicate places. [2024-02-05 10:28:32,768 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 128 transitions, 1315 flow [2024-02-05 10:28:32,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:32,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:32,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:32,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-02-05 10:28:32,769 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:32,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:32,769 INFO L85 PathProgramCache]: Analyzing trace with hash 422044713, now seen corresponding path program 3 times [2024-02-05 10:28:32,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:32,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806168869] [2024-02-05 10:28:32,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:32,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:32,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:33,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:33,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:33,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806168869] [2024-02-05 10:28:33,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806168869] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:33,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:33,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:28:33,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611639741] [2024-02-05 10:28:33,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:33,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:28:33,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:33,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:28:33,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:28:33,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:33,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 128 transitions, 1315 flow. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:33,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:33,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:33,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:33,594 INFO L124 PetriNetUnfolderBase]: 1755/3577 cut-off events. [2024-02-05 10:28:33,594 INFO L125 PetriNetUnfolderBase]: For 15811/15828 co-relation queries the response was YES. [2024-02-05 10:28:33,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12768 conditions, 3577 events. 1755/3577 cut-off events. For 15811/15828 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 25400 event pairs, 1002 based on Foata normal form. 44/3256 useless extension candidates. Maximal degree in co-relation 12708. Up to 2651 conditions per place. [2024-02-05 10:28:33,627 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 108 selfloop transitions, 24 changer transitions 0/148 dead transitions. [2024-02-05 10:28:33,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 148 transitions, 1644 flow [2024-02-05 10:28:33,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:28:33,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:28:33,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 218 transitions. [2024-02-05 10:28:33,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42661448140900193 [2024-02-05 10:28:33,629 INFO L175 Difference]: Start difference. First operand has 152 places, 128 transitions, 1315 flow. Second operand 7 states and 218 transitions. [2024-02-05 10:28:33,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 148 transitions, 1644 flow [2024-02-05 10:28:33,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 148 transitions, 1569 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-02-05 10:28:33,658 INFO L231 Difference]: Finished difference. Result has 152 places, 128 transitions, 1302 flow [2024-02-05 10:28:33,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1240, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1302, PETRI_PLACES=152, PETRI_TRANSITIONS=128} [2024-02-05 10:28:33,659 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 75 predicate places. [2024-02-05 10:28:33,659 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 128 transitions, 1302 flow [2024-02-05 10:28:33,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:33,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:33,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:33,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-02-05 10:28:33,660 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:33,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:33,660 INFO L85 PathProgramCache]: Analyzing trace with hash -137728411, now seen corresponding path program 4 times [2024-02-05 10:28:33,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:33,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102325560] [2024-02-05 10:28:33,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:33,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:33,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:33,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:33,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:33,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102325560] [2024-02-05 10:28:33,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102325560] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:33,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:33,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:28:33,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013090023] [2024-02-05 10:28:33,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:33,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:28:33,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:33,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:28:33,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:28:33,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:33,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 128 transitions, 1302 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:33,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:33,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:33,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:34,455 INFO L124 PetriNetUnfolderBase]: 1971/3903 cut-off events. [2024-02-05 10:28:34,456 INFO L125 PetriNetUnfolderBase]: For 18626/18810 co-relation queries the response was YES. [2024-02-05 10:28:34,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14260 conditions, 3903 events. 1971/3903 cut-off events. For 18626/18810 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 27543 event pairs, 1045 based on Foata normal form. 66/3533 useless extension candidates. Maximal degree in co-relation 14201. Up to 2951 conditions per place. [2024-02-05 10:28:34,484 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 108 selfloop transitions, 25 changer transitions 0/153 dead transitions. [2024-02-05 10:28:34,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 153 transitions, 1702 flow [2024-02-05 10:28:34,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:28:34,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:28:34,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 195 transitions. [2024-02-05 10:28:34,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4452054794520548 [2024-02-05 10:28:34,486 INFO L175 Difference]: Start difference. First operand has 152 places, 128 transitions, 1302 flow. Second operand 6 states and 195 transitions. [2024-02-05 10:28:34,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 153 transitions, 1702 flow [2024-02-05 10:28:34,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 153 transitions, 1589 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-02-05 10:28:34,521 INFO L231 Difference]: Finished difference. Result has 150 places, 134 transitions, 1339 flow [2024-02-05 10:28:34,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1205, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1339, PETRI_PLACES=150, PETRI_TRANSITIONS=134} [2024-02-05 10:28:34,522 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 73 predicate places. [2024-02-05 10:28:34,522 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 134 transitions, 1339 flow [2024-02-05 10:28:34,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:34,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:34,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:34,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-02-05 10:28:34,523 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:34,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:34,523 INFO L85 PathProgramCache]: Analyzing trace with hash 517351979, now seen corresponding path program 5 times [2024-02-05 10:28:34,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:34,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846771412] [2024-02-05 10:28:34,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:34,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:34,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:34,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:34,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846771412] [2024-02-05 10:28:34,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846771412] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:34,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:34,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:28:34,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248252377] [2024-02-05 10:28:34,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:34,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:28:34,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:34,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:28:34,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:28:34,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:34,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 134 transitions, 1339 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:34,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:34,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:34,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:35,254 INFO L124 PetriNetUnfolderBase]: 1973/3902 cut-off events. [2024-02-05 10:28:35,254 INFO L125 PetriNetUnfolderBase]: For 17508/17697 co-relation queries the response was YES. [2024-02-05 10:28:35,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14303 conditions, 3902 events. 1973/3902 cut-off events. For 17508/17697 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 27444 event pairs, 1002 based on Foata normal form. 51/3511 useless extension candidates. Maximal degree in co-relation 14244. Up to 2667 conditions per place. [2024-02-05 10:28:35,282 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 88 selfloop transitions, 48 changer transitions 0/156 dead transitions. [2024-02-05 10:28:35,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 156 transitions, 1680 flow [2024-02-05 10:28:35,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:28:35,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:28:35,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 201 transitions. [2024-02-05 10:28:35,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4589041095890411 [2024-02-05 10:28:35,284 INFO L175 Difference]: Start difference. First operand has 150 places, 134 transitions, 1339 flow. Second operand 6 states and 201 transitions. [2024-02-05 10:28:35,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 156 transitions, 1680 flow [2024-02-05 10:28:35,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 156 transitions, 1642 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-02-05 10:28:35,318 INFO L231 Difference]: Finished difference. Result has 153 places, 134 transitions, 1413 flow [2024-02-05 10:28:35,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1303, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1413, PETRI_PLACES=153, PETRI_TRANSITIONS=134} [2024-02-05 10:28:35,319 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 76 predicate places. [2024-02-05 10:28:35,319 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 134 transitions, 1413 flow [2024-02-05 10:28:35,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:35,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:35,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:35,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-02-05 10:28:35,320 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:35,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:35,320 INFO L85 PathProgramCache]: Analyzing trace with hash 544965539, now seen corresponding path program 6 times [2024-02-05 10:28:35,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:35,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210705496] [2024-02-05 10:28:35,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:35,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:35,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:35,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:35,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:35,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210705496] [2024-02-05 10:28:35,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210705496] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:35,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:35,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:28:35,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123512558] [2024-02-05 10:28:35,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:35,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:28:35,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:35,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:28:35,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:28:35,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:35,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 134 transitions, 1413 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:35,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:35,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:35,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:36,021 INFO L124 PetriNetUnfolderBase]: 1948/3862 cut-off events. [2024-02-05 10:28:36,021 INFO L125 PetriNetUnfolderBase]: For 18954/19139 co-relation queries the response was YES. [2024-02-05 10:28:36,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14251 conditions, 3862 events. 1948/3862 cut-off events. For 18954/19139 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 27145 event pairs, 999 based on Foata normal form. 54/3474 useless extension candidates. Maximal degree in co-relation 14192. Up to 2754 conditions per place. [2024-02-05 10:28:36,048 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 89 selfloop transitions, 42 changer transitions 0/151 dead transitions. [2024-02-05 10:28:36,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 151 transitions, 1722 flow [2024-02-05 10:28:36,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-05 10:28:36,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-05 10:28:36,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 173 transitions. [2024-02-05 10:28:36,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.473972602739726 [2024-02-05 10:28:36,050 INFO L175 Difference]: Start difference. First operand has 153 places, 134 transitions, 1413 flow. Second operand 5 states and 173 transitions. [2024-02-05 10:28:36,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 151 transitions, 1722 flow [2024-02-05 10:28:36,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 151 transitions, 1610 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-02-05 10:28:36,084 INFO L231 Difference]: Finished difference. Result has 151 places, 134 transitions, 1421 flow [2024-02-05 10:28:36,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1301, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1421, PETRI_PLACES=151, PETRI_TRANSITIONS=134} [2024-02-05 10:28:36,084 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 74 predicate places. [2024-02-05 10:28:36,084 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 134 transitions, 1421 flow [2024-02-05 10:28:36,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:36,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:36,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:36,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-02-05 10:28:36,085 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:36,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:36,086 INFO L85 PathProgramCache]: Analyzing trace with hash -252802685, now seen corresponding path program 4 times [2024-02-05 10:28:36,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:36,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996996832] [2024-02-05 10:28:36,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:36,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:36,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:36,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:36,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:36,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996996832] [2024-02-05 10:28:36,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996996832] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:36,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:36,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:28:36,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892167229] [2024-02-05 10:28:36,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:36,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:28:36,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:36,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:28:36,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:28:36,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:36,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 134 transitions, 1421 flow. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:36,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:36,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:36,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:36,951 INFO L124 PetriNetUnfolderBase]: 1928/3865 cut-off events. [2024-02-05 10:28:36,951 INFO L125 PetriNetUnfolderBase]: For 18824/18999 co-relation queries the response was YES. [2024-02-05 10:28:36,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14245 conditions, 3865 events. 1928/3865 cut-off events. For 18824/18999 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 27199 event pairs, 781 based on Foata normal form. 42/3483 useless extension candidates. Maximal degree in co-relation 14187. Up to 2750 conditions per place. [2024-02-05 10:28:36,977 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 91 selfloop transitions, 44 changer transitions 0/155 dead transitions. [2024-02-05 10:28:36,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 155 transitions, 1742 flow [2024-02-05 10:28:36,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:28:36,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:28:36,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 199 transitions. [2024-02-05 10:28:36,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.454337899543379 [2024-02-05 10:28:36,979 INFO L175 Difference]: Start difference. First operand has 151 places, 134 transitions, 1421 flow. Second operand 6 states and 199 transitions. [2024-02-05 10:28:36,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 155 transitions, 1742 flow [2024-02-05 10:28:37,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 155 transitions, 1652 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-02-05 10:28:37,020 INFO L231 Difference]: Finished difference. Result has 153 places, 134 transitions, 1451 flow [2024-02-05 10:28:37,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1331, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1451, PETRI_PLACES=153, PETRI_TRANSITIONS=134} [2024-02-05 10:28:37,020 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 76 predicate places. [2024-02-05 10:28:37,020 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 134 transitions, 1451 flow [2024-02-05 10:28:37,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:37,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:37,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:37,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-02-05 10:28:37,021 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:37,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:37,021 INFO L85 PathProgramCache]: Analyzing trace with hash -172209662, now seen corresponding path program 1 times [2024-02-05 10:28:37,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:37,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916335465] [2024-02-05 10:28:37,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:37,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:37,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:37,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:37,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:37,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916335465] [2024-02-05 10:28:37,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916335465] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:37,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:37,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-05 10:28:37,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441120031] [2024-02-05 10:28:37,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:37,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-05 10:28:37,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:37,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-05 10:28:37,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-05 10:28:37,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:28:37,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 134 transitions, 1451 flow. Second operand has 7 states, 7 states have (on average 32.57142857142857) internal successors, (228), 7 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:37,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:37,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:28:37,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:37,591 INFO L124 PetriNetUnfolderBase]: 1563/3195 cut-off events. [2024-02-05 10:28:37,591 INFO L125 PetriNetUnfolderBase]: For 18148/18226 co-relation queries the response was YES. [2024-02-05 10:28:37,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12264 conditions, 3195 events. 1563/3195 cut-off events. For 18148/18226 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 22695 event pairs, 746 based on Foata normal form. 24/2874 useless extension candidates. Maximal degree in co-relation 12205. Up to 2297 conditions per place. [2024-02-05 10:28:37,616 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 116 selfloop transitions, 30 changer transitions 0/174 dead transitions. [2024-02-05 10:28:37,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 174 transitions, 2118 flow [2024-02-05 10:28:37,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:28:37,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:28:37,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 285 transitions. [2024-02-05 10:28:37,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5577299412915852 [2024-02-05 10:28:37,618 INFO L175 Difference]: Start difference. First operand has 153 places, 134 transitions, 1451 flow. Second operand 7 states and 285 transitions. [2024-02-05 10:28:37,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 174 transitions, 2118 flow [2024-02-05 10:28:37,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 174 transitions, 1992 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-02-05 10:28:37,647 INFO L231 Difference]: Finished difference. Result has 158 places, 155 transitions, 1757 flow [2024-02-05 10:28:37,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1349, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1757, PETRI_PLACES=158, PETRI_TRANSITIONS=155} [2024-02-05 10:28:37,648 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 81 predicate places. [2024-02-05 10:28:37,648 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 155 transitions, 1757 flow [2024-02-05 10:28:37,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.57142857142857) internal successors, (228), 7 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:37,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:37,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:37,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-02-05 10:28:37,649 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:37,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:37,649 INFO L85 PathProgramCache]: Analyzing trace with hash -826908090, now seen corresponding path program 1 times [2024-02-05 10:28:37,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:37,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996249042] [2024-02-05 10:28:37,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:37,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:37,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:37,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:37,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:37,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996249042] [2024-02-05 10:28:37,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996249042] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:37,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:37,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-05 10:28:37,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812189772] [2024-02-05 10:28:37,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:37,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-05 10:28:37,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:37,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-05 10:28:37,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-05 10:28:37,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:28:37,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 155 transitions, 1757 flow. Second operand has 7 states, 7 states have (on average 32.57142857142857) internal successors, (228), 7 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:37,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:37,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:28:37,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:38,171 INFO L124 PetriNetUnfolderBase]: 1293/2719 cut-off events. [2024-02-05 10:28:38,171 INFO L125 PetriNetUnfolderBase]: For 15155/15239 co-relation queries the response was YES. [2024-02-05 10:28:38,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10427 conditions, 2719 events. 1293/2719 cut-off events. For 15155/15239 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 19205 event pairs, 709 based on Foata normal form. 24/2500 useless extension candidates. Maximal degree in co-relation 10364. Up to 1912 conditions per place. [2024-02-05 10:28:38,188 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 134 selfloop transitions, 24 changer transitions 0/186 dead transitions. [2024-02-05 10:28:38,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 186 transitions, 2300 flow [2024-02-05 10:28:38,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-05 10:28:38,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-05 10:28:38,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 215 transitions. [2024-02-05 10:28:38,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.589041095890411 [2024-02-05 10:28:38,190 INFO L175 Difference]: Start difference. First operand has 158 places, 155 transitions, 1757 flow. Second operand 5 states and 215 transitions. [2024-02-05 10:28:38,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 186 transitions, 2300 flow [2024-02-05 10:28:38,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 186 transitions, 2298 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-02-05 10:28:38,212 INFO L231 Difference]: Finished difference. Result has 164 places, 167 transitions, 1977 flow [2024-02-05 10:28:38,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1755, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1977, PETRI_PLACES=164, PETRI_TRANSITIONS=167} [2024-02-05 10:28:38,212 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 87 predicate places. [2024-02-05 10:28:38,212 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 167 transitions, 1977 flow [2024-02-05 10:28:38,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.57142857142857) internal successors, (228), 7 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:38,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:38,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:38,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-02-05 10:28:38,213 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:38,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:38,213 INFO L85 PathProgramCache]: Analyzing trace with hash 2129257844, now seen corresponding path program 1 times [2024-02-05 10:28:38,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:38,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479572582] [2024-02-05 10:28:38,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:38,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:38,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:38,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:38,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479572582] [2024-02-05 10:28:38,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479572582] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:38,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:38,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:28:38,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550022884] [2024-02-05 10:28:38,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:38,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:28:38,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:38,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:28:38,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:28:38,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:28:38,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 167 transitions, 1977 flow. Second operand has 8 states, 8 states have (on average 32.375) internal successors, (259), 8 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:38,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:38,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:28:38,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:38,741 INFO L124 PetriNetUnfolderBase]: 1152/2366 cut-off events. [2024-02-05 10:28:38,741 INFO L125 PetriNetUnfolderBase]: For 16814/16876 co-relation queries the response was YES. [2024-02-05 10:28:38,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9800 conditions, 2366 events. 1152/2366 cut-off events. For 16814/16876 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 15769 event pairs, 338 based on Foata normal form. 66/2263 useless extension candidates. Maximal degree in co-relation 9733. Up to 1150 conditions per place. [2024-02-05 10:28:38,758 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 95 selfloop transitions, 79 changer transitions 0/202 dead transitions. [2024-02-05 10:28:38,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 202 transitions, 2519 flow [2024-02-05 10:28:38,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:28:38,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:28:38,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 301 transitions. [2024-02-05 10:28:38,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.589041095890411 [2024-02-05 10:28:38,760 INFO L175 Difference]: Start difference. First operand has 164 places, 167 transitions, 1977 flow. Second operand 7 states and 301 transitions. [2024-02-05 10:28:38,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 202 transitions, 2519 flow [2024-02-05 10:28:38,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 202 transitions, 2505 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-02-05 10:28:38,791 INFO L231 Difference]: Finished difference. Result has 171 places, 171 transitions, 2201 flow [2024-02-05 10:28:38,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1963, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2201, PETRI_PLACES=171, PETRI_TRANSITIONS=171} [2024-02-05 10:28:38,791 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 94 predicate places. [2024-02-05 10:28:38,791 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 171 transitions, 2201 flow [2024-02-05 10:28:38,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.375) internal successors, (259), 8 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:38,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:38,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:38,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-02-05 10:28:38,792 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:38,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:38,792 INFO L85 PathProgramCache]: Analyzing trace with hash -2106059276, now seen corresponding path program 2 times [2024-02-05 10:28:38,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:38,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141871020] [2024-02-05 10:28:38,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:38,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:38,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:38,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:38,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:38,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141871020] [2024-02-05 10:28:38,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141871020] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:38,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:38,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:28:38,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334036801] [2024-02-05 10:28:38,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:38,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:28:38,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:38,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:28:38,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:28:38,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:28:38,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 171 transitions, 2201 flow. Second operand has 8 states, 8 states have (on average 32.375) internal successors, (259), 8 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:38,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:38,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:28:38,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:39,528 INFO L124 PetriNetUnfolderBase]: 1422/2848 cut-off events. [2024-02-05 10:28:39,528 INFO L125 PetriNetUnfolderBase]: For 23235/23317 co-relation queries the response was YES. [2024-02-05 10:28:39,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12474 conditions, 2848 events. 1422/2848 cut-off events. For 23235/23317 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 19290 event pairs, 553 based on Foata normal form. 34/2697 useless extension candidates. Maximal degree in co-relation 12404. Up to 1784 conditions per place. [2024-02-05 10:28:39,550 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 111 selfloop transitions, 65 changer transitions 0/204 dead transitions. [2024-02-05 10:28:39,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 204 transitions, 2757 flow [2024-02-05 10:28:39,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:28:39,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:28:39,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 297 transitions. [2024-02-05 10:28:39,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5812133072407045 [2024-02-05 10:28:39,553 INFO L175 Difference]: Start difference. First operand has 171 places, 171 transitions, 2201 flow. Second operand 7 states and 297 transitions. [2024-02-05 10:28:39,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 204 transitions, 2757 flow [2024-02-05 10:28:39,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 204 transitions, 2630 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-02-05 10:28:39,599 INFO L231 Difference]: Finished difference. Result has 174 places, 175 transitions, 2250 flow [2024-02-05 10:28:39,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2078, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2250, PETRI_PLACES=174, PETRI_TRANSITIONS=175} [2024-02-05 10:28:39,600 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 97 predicate places. [2024-02-05 10:28:39,600 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 175 transitions, 2250 flow [2024-02-05 10:28:39,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.375) internal successors, (259), 8 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:39,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:39,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:39,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-02-05 10:28:39,601 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:39,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:39,602 INFO L85 PathProgramCache]: Analyzing trace with hash -2105318066, now seen corresponding path program 3 times [2024-02-05 10:28:39,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:39,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519991683] [2024-02-05 10:28:39,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:39,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:39,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:39,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:39,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:39,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519991683] [2024-02-05 10:28:39,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519991683] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:39,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:39,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:28:39,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454020911] [2024-02-05 10:28:39,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:39,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:28:39,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:39,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:28:39,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:28:39,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:28:39,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 175 transitions, 2250 flow. Second operand has 8 states, 8 states have (on average 32.375) internal successors, (259), 8 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:39,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:39,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:28:39,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:40,379 INFO L124 PetriNetUnfolderBase]: 1390/2800 cut-off events. [2024-02-05 10:28:40,380 INFO L125 PetriNetUnfolderBase]: For 22036/22114 co-relation queries the response was YES. [2024-02-05 10:28:40,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12200 conditions, 2800 events. 1390/2800 cut-off events. For 22036/22114 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 18918 event pairs, 533 based on Foata normal form. 34/2649 useless extension candidates. Maximal degree in co-relation 12129. Up to 1776 conditions per place. [2024-02-05 10:28:40,406 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 113 selfloop transitions, 67 changer transitions 0/208 dead transitions. [2024-02-05 10:28:40,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 208 transitions, 2770 flow [2024-02-05 10:28:40,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:28:40,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:28:40,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 365 transitions. [2024-02-05 10:28:40,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-02-05 10:28:40,407 INFO L175 Difference]: Start difference. First operand has 174 places, 175 transitions, 2250 flow. Second operand 9 states and 365 transitions. [2024-02-05 10:28:40,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 208 transitions, 2770 flow [2024-02-05 10:28:40,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 208 transitions, 2689 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-02-05 10:28:40,450 INFO L231 Difference]: Finished difference. Result has 180 places, 175 transitions, 2308 flow [2024-02-05 10:28:40,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2169, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2308, PETRI_PLACES=180, PETRI_TRANSITIONS=175} [2024-02-05 10:28:40,451 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 103 predicate places. [2024-02-05 10:28:40,451 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 175 transitions, 2308 flow [2024-02-05 10:28:40,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.375) internal successors, (259), 8 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:40,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:40,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:40,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-02-05 10:28:40,452 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:40,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:40,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1467285132, now seen corresponding path program 4 times [2024-02-05 10:28:40,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:40,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933940036] [2024-02-05 10:28:40,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:40,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:40,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:40,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:40,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:40,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933940036] [2024-02-05 10:28:40,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933940036] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:40,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:40,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:28:40,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651208856] [2024-02-05 10:28:40,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:40,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:28:40,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:40,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:28:40,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:28:40,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:28:40,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 175 transitions, 2308 flow. Second operand has 8 states, 8 states have (on average 32.375) internal successors, (259), 8 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:40,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:40,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:28:40,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:41,152 INFO L124 PetriNetUnfolderBase]: 1572/3086 cut-off events. [2024-02-05 10:28:41,153 INFO L125 PetriNetUnfolderBase]: For 25445/25533 co-relation queries the response was YES. [2024-02-05 10:28:41,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13834 conditions, 3086 events. 1572/3086 cut-off events. For 25445/25533 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 20859 event pairs, 508 based on Foata normal form. 34/2935 useless extension candidates. Maximal degree in co-relation 13761. Up to 1527 conditions per place. [2024-02-05 10:28:41,179 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 90 selfloop transitions, 87 changer transitions 0/205 dead transitions. [2024-02-05 10:28:41,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 205 transitions, 2848 flow [2024-02-05 10:28:41,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:28:41,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:28:41,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 263 transitions. [2024-02-05 10:28:41,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6004566210045662 [2024-02-05 10:28:41,180 INFO L175 Difference]: Start difference. First operand has 180 places, 175 transitions, 2308 flow. Second operand 6 states and 263 transitions. [2024-02-05 10:28:41,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 205 transitions, 2848 flow [2024-02-05 10:28:41,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 205 transitions, 2706 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-02-05 10:28:41,231 INFO L231 Difference]: Finished difference. Result has 178 places, 177 transitions, 2372 flow [2024-02-05 10:28:41,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2166, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2372, PETRI_PLACES=178, PETRI_TRANSITIONS=177} [2024-02-05 10:28:41,231 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 101 predicate places. [2024-02-05 10:28:41,231 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 177 transitions, 2372 flow [2024-02-05 10:28:41,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.375) internal successors, (259), 8 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:41,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:41,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:41,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-02-05 10:28:41,232 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:41,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:41,232 INFO L85 PathProgramCache]: Analyzing trace with hash 26038784, now seen corresponding path program 1 times [2024-02-05 10:28:41,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:41,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098598762] [2024-02-05 10:28:41,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:41,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:41,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:41,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:41,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:41,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098598762] [2024-02-05 10:28:41,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098598762] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:41,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:41,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:28:41,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327057283] [2024-02-05 10:28:41,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:41,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:28:41,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:41,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:28:41,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:28:41,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:41,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 177 transitions, 2372 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:41,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:41,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:41,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:42,162 INFO L124 PetriNetUnfolderBase]: 1886/3577 cut-off events. [2024-02-05 10:28:42,163 INFO L125 PetriNetUnfolderBase]: For 27341/27370 co-relation queries the response was YES. [2024-02-05 10:28:42,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15872 conditions, 3577 events. 1886/3577 cut-off events. For 27341/27370 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 23906 event pairs, 790 based on Foata normal form. 54/3463 useless extension candidates. Maximal degree in co-relation 15798. Up to 2727 conditions per place. [2024-02-05 10:28:42,193 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 143 selfloop transitions, 45 changer transitions 0/204 dead transitions. [2024-02-05 10:28:42,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 204 transitions, 2876 flow [2024-02-05 10:28:42,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:28:42,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:28:42,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 249 transitions. [2024-02-05 10:28:42,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263698630136986 [2024-02-05 10:28:42,195 INFO L175 Difference]: Start difference. First operand has 178 places, 177 transitions, 2372 flow. Second operand 8 states and 249 transitions. [2024-02-05 10:28:42,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 204 transitions, 2876 flow [2024-02-05 10:28:42,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 204 transitions, 2700 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-02-05 10:28:42,260 INFO L231 Difference]: Finished difference. Result has 181 places, 179 transitions, 2328 flow [2024-02-05 10:28:42,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2200, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2328, PETRI_PLACES=181, PETRI_TRANSITIONS=179} [2024-02-05 10:28:42,260 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 104 predicate places. [2024-02-05 10:28:42,260 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 179 transitions, 2328 flow [2024-02-05 10:28:42,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:42,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:42,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:42,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-02-05 10:28:42,261 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:42,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:42,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1354266706, now seen corresponding path program 5 times [2024-02-05 10:28:42,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:42,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231465522] [2024-02-05 10:28:42,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:42,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:42,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:42,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:42,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:42,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231465522] [2024-02-05 10:28:42,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231465522] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:42,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:42,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:28:42,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628548288] [2024-02-05 10:28:42,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:42,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:28:42,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:42,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:28:42,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:28:42,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:28:42,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 179 transitions, 2328 flow. Second operand has 8 states, 8 states have (on average 32.375) internal successors, (259), 8 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:42,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:42,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:28:42,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:42,960 INFO L124 PetriNetUnfolderBase]: 1503/3011 cut-off events. [2024-02-05 10:28:42,960 INFO L125 PetriNetUnfolderBase]: For 23822/23913 co-relation queries the response was YES. [2024-02-05 10:28:42,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13286 conditions, 3011 events. 1503/3011 cut-off events. For 23822/23913 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 20638 event pairs, 488 based on Foata normal form. 34/2858 useless extension candidates. Maximal degree in co-relation 13212. Up to 1500 conditions per place. [2024-02-05 10:28:42,986 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 92 selfloop transitions, 95 changer transitions 0/215 dead transitions. [2024-02-05 10:28:42,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 215 transitions, 2888 flow [2024-02-05 10:28:42,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:28:42,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:28:42,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 337 transitions. [2024-02-05 10:28:42,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.577054794520548 [2024-02-05 10:28:42,988 INFO L175 Difference]: Start difference. First operand has 181 places, 179 transitions, 2328 flow. Second operand 8 states and 337 transitions. [2024-02-05 10:28:42,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 215 transitions, 2888 flow [2024-02-05 10:28:43,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 215 transitions, 2800 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-02-05 10:28:43,047 INFO L231 Difference]: Finished difference. Result has 184 places, 179 transitions, 2439 flow [2024-02-05 10:28:43,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2240, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2439, PETRI_PLACES=184, PETRI_TRANSITIONS=179} [2024-02-05 10:28:43,047 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 107 predicate places. [2024-02-05 10:28:43,047 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 179 transitions, 2439 flow [2024-02-05 10:28:43,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.375) internal successors, (259), 8 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:43,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:43,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:43,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-02-05 10:28:43,048 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:43,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:43,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1968208340, now seen corresponding path program 1 times [2024-02-05 10:28:43,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:43,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012064333] [2024-02-05 10:28:43,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:43,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:43,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:43,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:43,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:43,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012064333] [2024-02-05 10:28:43,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012064333] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:43,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:43,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:28:43,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671994030] [2024-02-05 10:28:43,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:43,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:28:43,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:43,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:28:43,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:28:43,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:43,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 179 transitions, 2439 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:43,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:43,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:43,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:43,926 INFO L124 PetriNetUnfolderBase]: 2111/3957 cut-off events. [2024-02-05 10:28:43,926 INFO L125 PetriNetUnfolderBase]: For 28319/28495 co-relation queries the response was YES. [2024-02-05 10:28:43,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17608 conditions, 3957 events. 2111/3957 cut-off events. For 28319/28495 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 25948 event pairs, 571 based on Foata normal form. 63/3778 useless extension candidates. Maximal degree in co-relation 17532. Up to 1661 conditions per place. [2024-02-05 10:28:43,954 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 111 selfloop transitions, 90 changer transitions 0/221 dead transitions. [2024-02-05 10:28:43,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 221 transitions, 3023 flow [2024-02-05 10:28:43,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:28:43,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:28:43,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 270 transitions. [2024-02-05 10:28:43,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4623287671232877 [2024-02-05 10:28:43,956 INFO L175 Difference]: Start difference. First operand has 184 places, 179 transitions, 2439 flow. Second operand 8 states and 270 transitions. [2024-02-05 10:28:43,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 221 transitions, 3023 flow [2024-02-05 10:28:44,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 221 transitions, 2778 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-02-05 10:28:44,028 INFO L231 Difference]: Finished difference. Result has 184 places, 179 transitions, 2381 flow [2024-02-05 10:28:44,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2194, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2381, PETRI_PLACES=184, PETRI_TRANSITIONS=179} [2024-02-05 10:28:44,029 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 107 predicate places. [2024-02-05 10:28:44,029 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 179 transitions, 2381 flow [2024-02-05 10:28:44,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:44,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:44,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:44,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-02-05 10:28:44,030 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:44,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:44,030 INFO L85 PathProgramCache]: Analyzing trace with hash -149576838, now seen corresponding path program 2 times [2024-02-05 10:28:44,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:44,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991849348] [2024-02-05 10:28:44,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:44,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:44,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:44,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:44,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:44,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991849348] [2024-02-05 10:28:44,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991849348] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:44,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:44,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:28:44,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400067927] [2024-02-05 10:28:44,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:44,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:28:44,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:44,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:28:44,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:28:44,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:44,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 179 transitions, 2381 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:44,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:44,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:44,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:44,861 INFO L124 PetriNetUnfolderBase]: 2018/3769 cut-off events. [2024-02-05 10:28:44,861 INFO L125 PetriNetUnfolderBase]: For 25485/25514 co-relation queries the response was YES. [2024-02-05 10:28:44,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16947 conditions, 3769 events. 2018/3769 cut-off events. For 25485/25514 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 25084 event pairs, 496 based on Foata normal form. 26/3639 useless extension candidates. Maximal degree in co-relation 16871. Up to 1468 conditions per place. [2024-02-05 10:28:44,894 INFO L140 encePairwiseOnDemand]: 59/73 looper letters, 119 selfloop transitions, 101 changer transitions 0/236 dead transitions. [2024-02-05 10:28:44,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 236 transitions, 3136 flow [2024-02-05 10:28:44,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:28:44,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:28:44,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 283 transitions. [2024-02-05 10:28:44,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4845890410958904 [2024-02-05 10:28:44,896 INFO L175 Difference]: Start difference. First operand has 184 places, 179 transitions, 2381 flow. Second operand 8 states and 283 transitions. [2024-02-05 10:28:44,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 236 transitions, 3136 flow [2024-02-05 10:28:44,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 236 transitions, 2944 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-02-05 10:28:44,974 INFO L231 Difference]: Finished difference. Result has 186 places, 188 transitions, 2530 flow [2024-02-05 10:28:44,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2201, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2530, PETRI_PLACES=186, PETRI_TRANSITIONS=188} [2024-02-05 10:28:44,974 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 109 predicate places. [2024-02-05 10:28:44,974 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 188 transitions, 2530 flow [2024-02-05 10:28:44,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:44,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:44,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:44,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-02-05 10:28:44,975 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:44,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:44,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1012345677, now seen corresponding path program 1 times [2024-02-05 10:28:44,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:44,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030592776] [2024-02-05 10:28:44,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:44,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:45,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:45,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:45,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030592776] [2024-02-05 10:28:45,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030592776] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:45,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:45,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:28:45,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942496170] [2024-02-05 10:28:45,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:45,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:28:45,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:45,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:28:45,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:28:45,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:45,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 188 transitions, 2530 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:45,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:45,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:45,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:45,763 INFO L124 PetriNetUnfolderBase]: 2036/3847 cut-off events. [2024-02-05 10:28:45,764 INFO L125 PetriNetUnfolderBase]: For 27926/27955 co-relation queries the response was YES. [2024-02-05 10:28:45,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18036 conditions, 3847 events. 2036/3847 cut-off events. For 27926/27955 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 25927 event pairs, 741 based on Foata normal form. 18/3697 useless extension candidates. Maximal degree in co-relation 17958. Up to 3086 conditions per place. [2024-02-05 10:28:45,793 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 172 selfloop transitions, 34 changer transitions 0/222 dead transitions. [2024-02-05 10:28:45,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 222 transitions, 3118 flow [2024-02-05 10:28:45,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:28:45,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:28:45,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 252 transitions. [2024-02-05 10:28:45,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4315068493150685 [2024-02-05 10:28:45,795 INFO L175 Difference]: Start difference. First operand has 186 places, 188 transitions, 2530 flow. Second operand 8 states and 252 transitions. [2024-02-05 10:28:45,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 222 transitions, 3118 flow [2024-02-05 10:28:45,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 222 transitions, 2983 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-02-05 10:28:45,870 INFO L231 Difference]: Finished difference. Result has 190 places, 195 transitions, 2533 flow [2024-02-05 10:28:45,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2395, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2533, PETRI_PLACES=190, PETRI_TRANSITIONS=195} [2024-02-05 10:28:45,870 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 113 predicate places. [2024-02-05 10:28:45,870 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 195 transitions, 2533 flow [2024-02-05 10:28:45,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:45,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:45,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:45,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-02-05 10:28:45,871 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:45,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:45,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1012110387, now seen corresponding path program 2 times [2024-02-05 10:28:45,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:45,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039787388] [2024-02-05 10:28:45,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:45,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:46,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:46,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:46,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039787388] [2024-02-05 10:28:46,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039787388] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:46,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:46,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:28:46,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230306201] [2024-02-05 10:28:46,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:46,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:28:46,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:46,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:28:46,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:28:46,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:46,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 195 transitions, 2533 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:46,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:46,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:46,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:46,605 INFO L124 PetriNetUnfolderBase]: 2030/3837 cut-off events. [2024-02-05 10:28:46,606 INFO L125 PetriNetUnfolderBase]: For 26489/26518 co-relation queries the response was YES. [2024-02-05 10:28:46,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17650 conditions, 3837 events. 2030/3837 cut-off events. For 26489/26518 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 25877 event pairs, 734 based on Foata normal form. 18/3687 useless extension candidates. Maximal degree in co-relation 17570. Up to 3086 conditions per place. [2024-02-05 10:28:46,638 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 170 selfloop transitions, 36 changer transitions 0/222 dead transitions. [2024-02-05 10:28:46,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 222 transitions, 3063 flow [2024-02-05 10:28:46,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:28:46,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:28:46,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 252 transitions. [2024-02-05 10:28:46,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4315068493150685 [2024-02-05 10:28:46,640 INFO L175 Difference]: Start difference. First operand has 190 places, 195 transitions, 2533 flow. Second operand 8 states and 252 transitions. [2024-02-05 10:28:46,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 222 transitions, 3063 flow [2024-02-05 10:28:46,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 222 transitions, 3011 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-02-05 10:28:46,732 INFO L231 Difference]: Finished difference. Result has 194 places, 195 transitions, 2558 flow [2024-02-05 10:28:46,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2481, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2558, PETRI_PLACES=194, PETRI_TRANSITIONS=195} [2024-02-05 10:28:46,732 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 117 predicate places. [2024-02-05 10:28:46,732 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 195 transitions, 2558 flow [2024-02-05 10:28:46,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:46,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:46,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:46,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-02-05 10:28:46,733 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:46,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:46,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1037145914, now seen corresponding path program 2 times [2024-02-05 10:28:46,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:46,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491596311] [2024-02-05 10:28:46,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:46,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:46,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:46,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:46,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:46,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491596311] [2024-02-05 10:28:46,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491596311] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:46,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:46,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:28:46,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130332159] [2024-02-05 10:28:46,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:46,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:28:46,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:46,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:28:46,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:28:46,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:46,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 195 transitions, 2558 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:46,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:46,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:46,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:47,731 INFO L124 PetriNetUnfolderBase]: 2446/4527 cut-off events. [2024-02-05 10:28:47,732 INFO L125 PetriNetUnfolderBase]: For 32447/32668 co-relation queries the response was YES. [2024-02-05 10:28:47,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20807 conditions, 4527 events. 2446/4527 cut-off events. For 32447/32668 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 29948 event pairs, 797 based on Foata normal form. 108/4367 useless extension candidates. Maximal degree in co-relation 20726. Up to 2910 conditions per place. [2024-02-05 10:28:47,772 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 141 selfloop transitions, 70 changer transitions 0/235 dead transitions. [2024-02-05 10:28:47,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 235 transitions, 3187 flow [2024-02-05 10:28:47,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:28:47,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:28:47,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 267 transitions. [2024-02-05 10:28:47,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4571917808219178 [2024-02-05 10:28:47,773 INFO L175 Difference]: Start difference. First operand has 194 places, 195 transitions, 2558 flow. Second operand 8 states and 267 transitions. [2024-02-05 10:28:47,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 235 transitions, 3187 flow [2024-02-05 10:28:47,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 235 transitions, 3119 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-02-05 10:28:47,870 INFO L231 Difference]: Finished difference. Result has 197 places, 195 transitions, 2640 flow [2024-02-05 10:28:47,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2492, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2640, PETRI_PLACES=197, PETRI_TRANSITIONS=195} [2024-02-05 10:28:47,870 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 120 predicate places. [2024-02-05 10:28:47,870 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 195 transitions, 2640 flow [2024-02-05 10:28:47,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:47,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:47,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:47,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-02-05 10:28:47,871 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:47,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:47,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1092433342, now seen corresponding path program 3 times [2024-02-05 10:28:47,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:47,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238965546] [2024-02-05 10:28:47,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:47,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:47,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:48,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:48,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:48,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238965546] [2024-02-05 10:28:48,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238965546] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:48,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:48,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:28:48,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270387331] [2024-02-05 10:28:48,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:48,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:28:48,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:48,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:28:48,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:28:48,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:48,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 195 transitions, 2640 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:48,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:48,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:48,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:48,720 INFO L124 PetriNetUnfolderBase]: 1950/3709 cut-off events. [2024-02-05 10:28:48,720 INFO L125 PetriNetUnfolderBase]: For 28702/28731 co-relation queries the response was YES. [2024-02-05 10:28:48,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17527 conditions, 3709 events. 1950/3709 cut-off events. For 28702/28731 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 24955 event pairs, 758 based on Foata normal form. 26/3567 useless extension candidates. Maximal degree in co-relation 17445. Up to 2452 conditions per place. [2024-02-05 10:28:48,753 INFO L140 encePairwiseOnDemand]: 59/73 looper letters, 149 selfloop transitions, 74 changer transitions 0/239 dead transitions. [2024-02-05 10:28:48,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 239 transitions, 3328 flow [2024-02-05 10:28:48,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:28:48,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:28:48,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 276 transitions. [2024-02-05 10:28:48,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4726027397260274 [2024-02-05 10:28:48,755 INFO L175 Difference]: Start difference. First operand has 197 places, 195 transitions, 2640 flow. Second operand 8 states and 276 transitions. [2024-02-05 10:28:48,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 239 transitions, 3328 flow [2024-02-05 10:28:48,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 239 transitions, 3188 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-02-05 10:28:48,844 INFO L231 Difference]: Finished difference. Result has 198 places, 195 transitions, 2656 flow [2024-02-05 10:28:48,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2500, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2656, PETRI_PLACES=198, PETRI_TRANSITIONS=195} [2024-02-05 10:28:48,845 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 121 predicate places. [2024-02-05 10:28:48,845 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 195 transitions, 2656 flow [2024-02-05 10:28:48,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:48,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:48,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:48,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-02-05 10:28:48,846 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:48,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:48,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1312589031, now seen corresponding path program 3 times [2024-02-05 10:28:48,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:48,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745959699] [2024-02-05 10:28:48,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:48,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:48,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:49,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:49,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:49,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745959699] [2024-02-05 10:28:49,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745959699] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:49,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:49,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:28:49,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235362701] [2024-02-05 10:28:49,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:49,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:28:49,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:49,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:28:49,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:28:49,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:49,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 195 transitions, 2656 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:49,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:49,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:49,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:49,649 INFO L124 PetriNetUnfolderBase]: 1956/3714 cut-off events. [2024-02-05 10:28:49,649 INFO L125 PetriNetUnfolderBase]: For 29833/29862 co-relation queries the response was YES. [2024-02-05 10:28:49,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17778 conditions, 3714 events. 1956/3714 cut-off events. For 29833/29862 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 24904 event pairs, 772 based on Foata normal form. 18/3564 useless extension candidates. Maximal degree in co-relation 17695. Up to 2962 conditions per place. [2024-02-05 10:28:49,679 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 170 selfloop transitions, 37 changer transitions 0/223 dead transitions. [2024-02-05 10:28:49,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 223 transitions, 3210 flow [2024-02-05 10:28:49,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:28:49,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:28:49,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 250 transitions. [2024-02-05 10:28:49,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4280821917808219 [2024-02-05 10:28:49,681 INFO L175 Difference]: Start difference. First operand has 198 places, 195 transitions, 2656 flow. Second operand 8 states and 250 transitions. [2024-02-05 10:28:49,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 223 transitions, 3210 flow [2024-02-05 10:28:49,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 223 transitions, 3060 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-02-05 10:28:49,770 INFO L231 Difference]: Finished difference. Result has 200 places, 200 transitions, 2646 flow [2024-02-05 10:28:49,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2508, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2646, PETRI_PLACES=200, PETRI_TRANSITIONS=200} [2024-02-05 10:28:49,771 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 123 predicate places. [2024-02-05 10:28:49,771 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 200 transitions, 2646 flow [2024-02-05 10:28:49,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:49,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:49,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:49,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-02-05 10:28:49,772 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:49,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:49,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1813136114, now seen corresponding path program 3 times [2024-02-05 10:28:49,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:49,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22875308] [2024-02-05 10:28:49,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:49,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:49,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:50,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:50,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:50,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22875308] [2024-02-05 10:28:50,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22875308] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:50,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:50,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:28:50,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099971622] [2024-02-05 10:28:50,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:50,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:28:50,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:50,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:28:50,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:28:50,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:50,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 200 transitions, 2646 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:50,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:50,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:50,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:50,782 INFO L124 PetriNetUnfolderBase]: 2331/4332 cut-off events. [2024-02-05 10:28:50,783 INFO L125 PetriNetUnfolderBase]: For 33996/34206 co-relation queries the response was YES. [2024-02-05 10:28:50,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20277 conditions, 4332 events. 2331/4332 cut-off events. For 33996/34206 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 28442 event pairs, 771 based on Foata normal form. 133/4201 useless extension candidates. Maximal degree in co-relation 20192. Up to 2902 conditions per place. [2024-02-05 10:28:50,828 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 147 selfloop transitions, 72 changer transitions 0/244 dead transitions. [2024-02-05 10:28:50,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 244 transitions, 3271 flow [2024-02-05 10:28:50,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-05 10:28:50,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-05 10:28:50,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 315 transitions. [2024-02-05 10:28:50,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4315068493150685 [2024-02-05 10:28:50,830 INFO L175 Difference]: Start difference. First operand has 200 places, 200 transitions, 2646 flow. Second operand 10 states and 315 transitions. [2024-02-05 10:28:50,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 244 transitions, 3271 flow [2024-02-05 10:28:50,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 244 transitions, 3228 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-02-05 10:28:50,935 INFO L231 Difference]: Finished difference. Result has 208 places, 200 transitions, 2757 flow [2024-02-05 10:28:50,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2604, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2757, PETRI_PLACES=208, PETRI_TRANSITIONS=200} [2024-02-05 10:28:50,936 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 131 predicate places. [2024-02-05 10:28:50,936 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 200 transitions, 2757 flow [2024-02-05 10:28:50,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:50,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:50,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:50,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-02-05 10:28:50,937 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:50,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:50,937 INFO L85 PathProgramCache]: Analyzing trace with hash 765296424, now seen corresponding path program 4 times [2024-02-05 10:28:50,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:50,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302833801] [2024-02-05 10:28:50,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:50,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:50,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:51,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:51,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:51,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302833801] [2024-02-05 10:28:51,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302833801] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:51,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:51,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:28:51,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451499082] [2024-02-05 10:28:51,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:51,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:28:51,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:51,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:28:51,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:28:51,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:51,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 200 transitions, 2757 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:51,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:51,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:51,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:51,789 INFO L124 PetriNetUnfolderBase]: 1806/3477 cut-off events. [2024-02-05 10:28:51,789 INFO L125 PetriNetUnfolderBase]: For 29548/29577 co-relation queries the response was YES. [2024-02-05 10:28:51,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16626 conditions, 3477 events. 1806/3477 cut-off events. For 29548/29577 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 23200 event pairs, 706 based on Foata normal form. 38/3347 useless extension candidates. Maximal degree in co-relation 16539. Up to 2438 conditions per place. [2024-02-05 10:28:51,822 INFO L140 encePairwiseOnDemand]: 59/73 looper letters, 151 selfloop transitions, 77 changer transitions 0/244 dead transitions. [2024-02-05 10:28:51,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 244 transitions, 3414 flow [2024-02-05 10:28:51,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-05 10:28:51,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-05 10:28:51,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 321 transitions. [2024-02-05 10:28:51,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4397260273972603 [2024-02-05 10:28:51,823 INFO L175 Difference]: Start difference. First operand has 208 places, 200 transitions, 2757 flow. Second operand 10 states and 321 transitions. [2024-02-05 10:28:51,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 244 transitions, 3414 flow [2024-02-05 10:28:51,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 244 transitions, 3270 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-02-05 10:28:51,902 INFO L231 Difference]: Finished difference. Result has 209 places, 200 transitions, 2776 flow [2024-02-05 10:28:51,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2613, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2776, PETRI_PLACES=209, PETRI_TRANSITIONS=200} [2024-02-05 10:28:51,903 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 132 predicate places. [2024-02-05 10:28:51,903 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 200 transitions, 2776 flow [2024-02-05 10:28:51,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:51,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:51,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:51,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-02-05 10:28:51,904 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:51,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:51,904 INFO L85 PathProgramCache]: Analyzing trace with hash 443041453, now seen corresponding path program 4 times [2024-02-05 10:28:51,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:51,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032184038] [2024-02-05 10:28:51,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:51,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:51,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:52,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:52,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:52,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032184038] [2024-02-05 10:28:52,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032184038] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:52,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:52,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:28:52,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121680424] [2024-02-05 10:28:52,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:52,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:28:52,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:52,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:28:52,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:28:52,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:52,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 200 transitions, 2776 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:52,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:52,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:52,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:52,761 INFO L124 PetriNetUnfolderBase]: 1800/3446 cut-off events. [2024-02-05 10:28:52,762 INFO L125 PetriNetUnfolderBase]: For 30049/30081 co-relation queries the response was YES. [2024-02-05 10:28:52,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16718 conditions, 3446 events. 1800/3446 cut-off events. For 30049/30081 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 22912 event pairs, 730 based on Foata normal form. 19/3295 useless extension candidates. Maximal degree in co-relation 16630. Up to 2722 conditions per place. [2024-02-05 10:28:52,794 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 166 selfloop transitions, 41 changer transitions 0/223 dead transitions. [2024-02-05 10:28:52,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 223 transitions, 3293 flow [2024-02-05 10:28:52,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:28:52,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:28:52,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 246 transitions. [2024-02-05 10:28:52,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212328767123288 [2024-02-05 10:28:52,796 INFO L175 Difference]: Start difference. First operand has 209 places, 200 transitions, 2776 flow. Second operand 8 states and 246 transitions. [2024-02-05 10:28:52,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 223 transitions, 3293 flow [2024-02-05 10:28:52,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 223 transitions, 3139 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-02-05 10:28:52,881 INFO L231 Difference]: Finished difference. Result has 209 places, 205 transitions, 2770 flow [2024-02-05 10:28:52,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2622, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2770, PETRI_PLACES=209, PETRI_TRANSITIONS=205} [2024-02-05 10:28:52,882 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 132 predicate places. [2024-02-05 10:28:52,882 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 205 transitions, 2770 flow [2024-02-05 10:28:52,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:52,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:52,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:52,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-02-05 10:28:52,883 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:52,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:52,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1967459716, now seen corresponding path program 4 times [2024-02-05 10:28:52,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:52,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864646160] [2024-02-05 10:28:52,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:52,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:52,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:53,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:53,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:53,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864646160] [2024-02-05 10:28:53,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864646160] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:53,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:53,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:28:53,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599710380] [2024-02-05 10:28:53,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:53,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:28:53,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:53,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:28:53,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:28:53,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:53,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 205 transitions, 2770 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:53,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:53,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:53,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:54,014 INFO L124 PetriNetUnfolderBase]: 2752/5048 cut-off events. [2024-02-05 10:28:54,014 INFO L125 PetriNetUnfolderBase]: For 42263/42522 co-relation queries the response was YES. [2024-02-05 10:28:54,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24295 conditions, 5048 events. 2752/5048 cut-off events. For 42263/42522 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 34019 event pairs, 846 based on Foata normal form. 136/4904 useless extension candidates. Maximal degree in co-relation 24205. Up to 2951 conditions per place. [2024-02-05 10:28:54,067 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 165 selfloop transitions, 74 changer transitions 0/265 dead transitions. [2024-02-05 10:28:54,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 265 transitions, 3635 flow [2024-02-05 10:28:54,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:28:54,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:28:54,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 297 transitions. [2024-02-05 10:28:54,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520547945205479 [2024-02-05 10:28:54,069 INFO L175 Difference]: Start difference. First operand has 209 places, 205 transitions, 2770 flow. Second operand 9 states and 297 transitions. [2024-02-05 10:28:54,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 265 transitions, 3635 flow [2024-02-05 10:28:54,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 265 transitions, 3591 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:28:54,218 INFO L231 Difference]: Finished difference. Result has 217 places, 215 transitions, 3025 flow [2024-02-05 10:28:54,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2728, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3025, PETRI_PLACES=217, PETRI_TRANSITIONS=215} [2024-02-05 10:28:54,219 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 140 predicate places. [2024-02-05 10:28:54,219 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 215 transitions, 3025 flow [2024-02-05 10:28:54,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:54,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:54,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:54,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-02-05 10:28:54,219 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:54,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:54,220 INFO L85 PathProgramCache]: Analyzing trace with hash 197912130, now seen corresponding path program 5 times [2024-02-05 10:28:54,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:54,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139470584] [2024-02-05 10:28:54,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:54,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:54,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:54,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:54,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:54,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139470584] [2024-02-05 10:28:54,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139470584] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:54,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:54,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:28:54,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488047775] [2024-02-05 10:28:54,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:54,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:28:54,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:54,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:28:54,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:28:54,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:54,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 215 transitions, 3025 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:54,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:54,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:54,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:55,381 INFO L124 PetriNetUnfolderBase]: 2060/3876 cut-off events. [2024-02-05 10:28:55,381 INFO L125 PetriNetUnfolderBase]: For 36932/36964 co-relation queries the response was YES. [2024-02-05 10:28:55,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19112 conditions, 3876 events. 2060/3876 cut-off events. For 36932/36964 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 26194 event pairs, 724 based on Foata normal form. 111/3831 useless extension candidates. Maximal degree in co-relation 19019. Up to 1711 conditions per place. [2024-02-05 10:28:55,411 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 155 selfloop transitions, 101 changer transitions 0/272 dead transitions. [2024-02-05 10:28:55,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 272 transitions, 3898 flow [2024-02-05 10:28:55,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-05 10:28:55,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-05 10:28:55,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 354 transitions. [2024-02-05 10:28:55,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44084682440846823 [2024-02-05 10:28:55,423 INFO L175 Difference]: Start difference. First operand has 217 places, 215 transitions, 3025 flow. Second operand 11 states and 354 transitions. [2024-02-05 10:28:55,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 272 transitions, 3898 flow [2024-02-05 10:28:55,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 272 transitions, 3741 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-02-05 10:28:55,513 INFO L231 Difference]: Finished difference. Result has 222 places, 215 transitions, 3084 flow [2024-02-05 10:28:55,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2868, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3084, PETRI_PLACES=222, PETRI_TRANSITIONS=215} [2024-02-05 10:28:55,514 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 145 predicate places. [2024-02-05 10:28:55,514 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 215 transitions, 3084 flow [2024-02-05 10:28:55,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:55,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:55,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:55,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-02-05 10:28:55,515 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:55,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:55,515 INFO L85 PathProgramCache]: Analyzing trace with hash 189510946, now seen corresponding path program 5 times [2024-02-05 10:28:55,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:55,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895984650] [2024-02-05 10:28:55,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:55,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:55,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:55,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:55,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:55,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895984650] [2024-02-05 10:28:55,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895984650] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:55,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:55,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:28:55,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913721860] [2024-02-05 10:28:55,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:55,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:28:55,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:55,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:28:55,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:28:55,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:55,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 215 transitions, 3084 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:55,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:55,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:55,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:56,667 INFO L124 PetriNetUnfolderBase]: 2453/4563 cut-off events. [2024-02-05 10:28:56,668 INFO L125 PetriNetUnfolderBase]: For 41983/42240 co-relation queries the response was YES. [2024-02-05 10:28:56,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22466 conditions, 4563 events. 2453/4563 cut-off events. For 41983/42240 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 30506 event pairs, 718 based on Foata normal form. 136/4430 useless extension candidates. Maximal degree in co-relation 22372. Up to 2720 conditions per place. [2024-02-05 10:28:56,716 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 172 selfloop transitions, 76 changer transitions 0/274 dead transitions. [2024-02-05 10:28:56,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 274 transitions, 3874 flow [2024-02-05 10:28:56,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-05 10:28:56,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-05 10:28:56,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 351 transitions. [2024-02-05 10:28:56,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43711083437110837 [2024-02-05 10:28:56,718 INFO L175 Difference]: Start difference. First operand has 222 places, 215 transitions, 3084 flow. Second operand 11 states and 351 transitions. [2024-02-05 10:28:56,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 274 transitions, 3874 flow [2024-02-05 10:28:56,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 274 transitions, 3607 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-02-05 10:28:56,837 INFO L231 Difference]: Finished difference. Result has 222 places, 215 transitions, 2978 flow [2024-02-05 10:28:56,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2817, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2978, PETRI_PLACES=222, PETRI_TRANSITIONS=215} [2024-02-05 10:28:56,838 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 145 predicate places. [2024-02-05 10:28:56,838 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 215 transitions, 2978 flow [2024-02-05 10:28:56,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:56,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:56,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:56,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-02-05 10:28:56,839 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:56,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:56,839 INFO L85 PathProgramCache]: Analyzing trace with hash 197255550, now seen corresponding path program 6 times [2024-02-05 10:28:56,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:56,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606714041] [2024-02-05 10:28:56,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:56,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:56,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:57,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:57,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:57,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606714041] [2024-02-05 10:28:57,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606714041] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:57,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:57,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:28:57,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825015308] [2024-02-05 10:28:57,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:57,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:28:57,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:57,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:28:57,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:28:57,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:57,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 215 transitions, 2978 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:57,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:57,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:57,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:57,877 INFO L124 PetriNetUnfolderBase]: 1930/3668 cut-off events. [2024-02-05 10:28:57,878 INFO L125 PetriNetUnfolderBase]: For 33970/34002 co-relation queries the response was YES. [2024-02-05 10:28:57,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17708 conditions, 3668 events. 1930/3668 cut-off events. For 33970/34002 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 24653 event pairs, 694 based on Foata normal form. 51/3563 useless extension candidates. Maximal degree in co-relation 17614. Up to 1687 conditions per place. [2024-02-05 10:28:57,920 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 143 selfloop transitions, 97 changer transitions 0/256 dead transitions. [2024-02-05 10:28:57,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 256 transitions, 3702 flow [2024-02-05 10:28:57,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:28:57,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:28:57,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 293 transitions. [2024-02-05 10:28:57,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4459665144596651 [2024-02-05 10:28:57,922 INFO L175 Difference]: Start difference. First operand has 222 places, 215 transitions, 2978 flow. Second operand 9 states and 293 transitions. [2024-02-05 10:28:57,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 256 transitions, 3702 flow [2024-02-05 10:28:58,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 256 transitions, 3546 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-02-05 10:28:58,013 INFO L231 Difference]: Finished difference. Result has 222 places, 215 transitions, 3028 flow [2024-02-05 10:28:58,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2822, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3028, PETRI_PLACES=222, PETRI_TRANSITIONS=215} [2024-02-05 10:28:58,014 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 145 predicate places. [2024-02-05 10:28:58,014 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 215 transitions, 3028 flow [2024-02-05 10:28:58,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:58,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:58,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:58,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-02-05 10:28:58,015 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:58,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:58,015 INFO L85 PathProgramCache]: Analyzing trace with hash 937562956, now seen corresponding path program 6 times [2024-02-05 10:28:58,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:58,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877615752] [2024-02-05 10:28:58,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:58,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:58,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:58,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:58,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:58,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877615752] [2024-02-05 10:28:58,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877615752] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:58,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:58,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:28:58,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223660885] [2024-02-05 10:28:58,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:58,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:28:58,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:58,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:28:58,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:28:58,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:58,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 215 transitions, 3028 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:58,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:58,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:58,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:59,110 INFO L124 PetriNetUnfolderBase]: 2291/4295 cut-off events. [2024-02-05 10:28:59,110 INFO L125 PetriNetUnfolderBase]: For 39335/39566 co-relation queries the response was YES. [2024-02-05 10:28:59,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20628 conditions, 4295 events. 2291/4295 cut-off events. For 39335/39566 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 28618 event pairs, 788 based on Foata normal form. 118/4145 useless extension candidates. Maximal degree in co-relation 20533. Up to 3370 conditions per place. [2024-02-05 10:28:59,153 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 181 selfloop transitions, 37 changer transitions 0/244 dead transitions. [2024-02-05 10:28:59,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 244 transitions, 3593 flow [2024-02-05 10:28:59,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:28:59,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:28:59,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 250 transitions. [2024-02-05 10:28:59,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4280821917808219 [2024-02-05 10:28:59,154 INFO L175 Difference]: Start difference. First operand has 222 places, 215 transitions, 3028 flow. Second operand 8 states and 250 transitions. [2024-02-05 10:28:59,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 244 transitions, 3593 flow [2024-02-05 10:28:59,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 244 transitions, 3395 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-02-05 10:28:59,256 INFO L231 Difference]: Finished difference. Result has 222 places, 215 transitions, 2914 flow [2024-02-05 10:28:59,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2830, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2914, PETRI_PLACES=222, PETRI_TRANSITIONS=215} [2024-02-05 10:28:59,257 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 145 predicate places. [2024-02-05 10:28:59,257 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 215 transitions, 2914 flow [2024-02-05 10:28:59,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:59,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:59,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:59,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-02-05 10:28:59,258 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:59,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:59,258 INFO L85 PathProgramCache]: Analyzing trace with hash 995958211, now seen corresponding path program 1 times [2024-02-05 10:28:59,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:59,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628689568] [2024-02-05 10:28:59,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:59,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:59,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:59,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:59,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:59,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628689568] [2024-02-05 10:28:59,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628689568] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:59,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:59,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:28:59,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090364651] [2024-02-05 10:28:59,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:59,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:28:59,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:59,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:28:59,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:28:59,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:59,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 215 transitions, 2914 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:59,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:59,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:59,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:00,173 INFO L124 PetriNetUnfolderBase]: 2288/4354 cut-off events. [2024-02-05 10:29:00,173 INFO L125 PetriNetUnfolderBase]: For 36959/37182 co-relation queries the response was YES. [2024-02-05 10:29:00,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20291 conditions, 4354 events. 2288/4354 cut-off events. For 36959/37182 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 29408 event pairs, 830 based on Foata normal form. 84/4153 useless extension candidates. Maximal degree in co-relation 20195. Up to 3366 conditions per place. [2024-02-05 10:29:00,207 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 194 selfloop transitions, 36 changer transitions 0/256 dead transitions. [2024-02-05 10:29:00,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 256 transitions, 3604 flow [2024-02-05 10:29:00,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:29:00,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:29:00,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 254 transitions. [2024-02-05 10:29:00,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4349315068493151 [2024-02-05 10:29:00,208 INFO L175 Difference]: Start difference. First operand has 222 places, 215 transitions, 2914 flow. Second operand 8 states and 254 transitions. [2024-02-05 10:29:00,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 256 transitions, 3604 flow [2024-02-05 10:29:00,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 256 transitions, 3516 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-02-05 10:29:00,291 INFO L231 Difference]: Finished difference. Result has 225 places, 228 transitions, 3045 flow [2024-02-05 10:29:00,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2834, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3045, PETRI_PLACES=225, PETRI_TRANSITIONS=228} [2024-02-05 10:29:00,292 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 148 predicate places. [2024-02-05 10:29:00,292 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 228 transitions, 3045 flow [2024-02-05 10:29:00,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:00,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:00,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:00,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-02-05 10:29:00,292 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:00,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:00,293 INFO L85 PathProgramCache]: Analyzing trace with hash -270546486, now seen corresponding path program 7 times [2024-02-05 10:29:00,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:00,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515904301] [2024-02-05 10:29:00,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:00,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:00,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:00,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:00,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:00,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515904301] [2024-02-05 10:29:00,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515904301] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:00,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:00,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:29:00,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377992439] [2024-02-05 10:29:00,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:00,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:29:00,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:00,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:29:00,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:29:00,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:00,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 228 transitions, 3045 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:00,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:00,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:00,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:01,321 INFO L124 PetriNetUnfolderBase]: 2386/4467 cut-off events. [2024-02-05 10:29:01,321 INFO L125 PetriNetUnfolderBase]: For 37818/38064 co-relation queries the response was YES. [2024-02-05 10:29:01,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20919 conditions, 4467 events. 2386/4467 cut-off events. For 37818/38064 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 30044 event pairs, 835 based on Foata normal form. 134/4339 useless extension candidates. Maximal degree in co-relation 20820. Up to 3336 conditions per place. [2024-02-05 10:29:01,368 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 182 selfloop transitions, 48 changer transitions 0/256 dead transitions. [2024-02-05 10:29:01,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 256 transitions, 3641 flow [2024-02-05 10:29:01,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:29:01,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:29:01,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 225 transitions. [2024-02-05 10:29:01,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44031311154598823 [2024-02-05 10:29:01,370 INFO L175 Difference]: Start difference. First operand has 225 places, 228 transitions, 3045 flow. Second operand 7 states and 225 transitions. [2024-02-05 10:29:01,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 256 transitions, 3641 flow [2024-02-05 10:29:01,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 256 transitions, 3599 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-02-05 10:29:01,478 INFO L231 Difference]: Finished difference. Result has 230 places, 232 transitions, 3166 flow [2024-02-05 10:29:01,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3004, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3166, PETRI_PLACES=230, PETRI_TRANSITIONS=232} [2024-02-05 10:29:01,479 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 153 predicate places. [2024-02-05 10:29:01,479 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 232 transitions, 3166 flow [2024-02-05 10:29:01,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:01,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:01,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:01,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-02-05 10:29:01,480 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:01,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:01,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1041594606, now seen corresponding path program 8 times [2024-02-05 10:29:01,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:01,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871198482] [2024-02-05 10:29:01,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:01,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:01,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:01,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:01,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:01,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871198482] [2024-02-05 10:29:01,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871198482] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:01,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:01,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:29:01,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65420462] [2024-02-05 10:29:01,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:01,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:29:01,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:01,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:29:01,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:29:01,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:01,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 232 transitions, 3166 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:01,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:01,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:01,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:02,545 INFO L124 PetriNetUnfolderBase]: 2402/4467 cut-off events. [2024-02-05 10:29:02,547 INFO L125 PetriNetUnfolderBase]: For 40199/40439 co-relation queries the response was YES. [2024-02-05 10:29:02,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21476 conditions, 4467 events. 2402/4467 cut-off events. For 40199/40439 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 29911 event pairs, 577 based on Foata normal form. 116/4309 useless extension candidates. Maximal degree in co-relation 21375. Up to 2037 conditions per place. [2024-02-05 10:29:02,584 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 122 selfloop transitions, 115 changer transitions 0/263 dead transitions. [2024-02-05 10:29:02,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 263 transitions, 3783 flow [2024-02-05 10:29:02,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:29:02,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:29:02,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 238 transitions. [2024-02-05 10:29:02,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4657534246575342 [2024-02-05 10:29:02,586 INFO L175 Difference]: Start difference. First operand has 230 places, 232 transitions, 3166 flow. Second operand 7 states and 238 transitions. [2024-02-05 10:29:02,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 263 transitions, 3783 flow [2024-02-05 10:29:02,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 263 transitions, 3679 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-02-05 10:29:02,688 INFO L231 Difference]: Finished difference. Result has 231 places, 232 transitions, 3312 flow [2024-02-05 10:29:02,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3066, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3312, PETRI_PLACES=231, PETRI_TRANSITIONS=232} [2024-02-05 10:29:02,689 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 154 predicate places. [2024-02-05 10:29:02,689 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 232 transitions, 3312 flow [2024-02-05 10:29:02,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:02,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:02,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:02,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-02-05 10:29:02,690 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:02,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:02,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1040941746, now seen corresponding path program 9 times [2024-02-05 10:29:02,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:02,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725554013] [2024-02-05 10:29:02,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:02,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:02,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:02,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:02,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:02,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725554013] [2024-02-05 10:29:02,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725554013] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:02,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:02,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:29:02,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787304672] [2024-02-05 10:29:02,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:02,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:29:02,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:02,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:29:02,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:29:03,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:03,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 232 transitions, 3312 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:03,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:03,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:03,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:03,780 INFO L124 PetriNetUnfolderBase]: 2358/4383 cut-off events. [2024-02-05 10:29:03,780 INFO L125 PetriNetUnfolderBase]: For 43202/43436 co-relation queries the response was YES. [2024-02-05 10:29:03,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21438 conditions, 4383 events. 2358/4383 cut-off events. For 43202/43436 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 29047 event pairs, 545 based on Foata normal form. 137/4262 useless extension candidates. Maximal degree in co-relation 21337. Up to 2025 conditions per place. [2024-02-05 10:29:03,823 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 127 selfloop transitions, 121 changer transitions 0/274 dead transitions. [2024-02-05 10:29:03,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 274 transitions, 3992 flow [2024-02-05 10:29:03,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:29:03,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:29:03,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 294 transitions. [2024-02-05 10:29:03,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4474885844748858 [2024-02-05 10:29:03,824 INFO L175 Difference]: Start difference. First operand has 231 places, 232 transitions, 3312 flow. Second operand 9 states and 294 transitions. [2024-02-05 10:29:03,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 274 transitions, 3992 flow [2024-02-05 10:29:03,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 274 transitions, 3738 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-02-05 10:29:03,928 INFO L231 Difference]: Finished difference. Result has 233 places, 232 transitions, 3327 flow [2024-02-05 10:29:03,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3066, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3327, PETRI_PLACES=233, PETRI_TRANSITIONS=232} [2024-02-05 10:29:03,930 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 156 predicate places. [2024-02-05 10:29:03,930 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 232 transitions, 3327 flow [2024-02-05 10:29:03,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:03,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:03,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:03,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-02-05 10:29:03,931 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:03,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:03,931 INFO L85 PathProgramCache]: Analyzing trace with hash -274114362, now seen corresponding path program 10 times [2024-02-05 10:29:03,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:03,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929353968] [2024-02-05 10:29:03,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:03,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:03,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:04,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:04,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:04,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929353968] [2024-02-05 10:29:04,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929353968] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:04,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:04,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:29:04,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118834720] [2024-02-05 10:29:04,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:04,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:29:04,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:04,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:29:04,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:29:04,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:04,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 232 transitions, 3327 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:04,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:04,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:04,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:04,989 INFO L124 PetriNetUnfolderBase]: 2308/4301 cut-off events. [2024-02-05 10:29:04,989 INFO L125 PetriNetUnfolderBase]: For 41142/41375 co-relation queries the response was YES. [2024-02-05 10:29:05,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20896 conditions, 4301 events. 2308/4301 cut-off events. For 41142/41375 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 28532 event pairs, 629 based on Foata normal form. 116/4136 useless extension candidates. Maximal degree in co-relation 20795. Up to 2748 conditions per place. [2024-02-05 10:29:05,026 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 137 selfloop transitions, 93 changer transitions 0/256 dead transitions. [2024-02-05 10:29:05,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 256 transitions, 3871 flow [2024-02-05 10:29:05,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:29:05,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:29:05,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 207 transitions. [2024-02-05 10:29:05,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4726027397260274 [2024-02-05 10:29:05,027 INFO L175 Difference]: Start difference. First operand has 233 places, 232 transitions, 3327 flow. Second operand 6 states and 207 transitions. [2024-02-05 10:29:05,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 256 transitions, 3871 flow [2024-02-05 10:29:05,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 256 transitions, 3607 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-02-05 10:29:05,120 INFO L231 Difference]: Finished difference. Result has 229 places, 232 transitions, 3303 flow [2024-02-05 10:29:05,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3063, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3303, PETRI_PLACES=229, PETRI_TRANSITIONS=232} [2024-02-05 10:29:05,121 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 152 predicate places. [2024-02-05 10:29:05,122 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 232 transitions, 3303 flow [2024-02-05 10:29:05,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:05,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:05,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:05,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-02-05 10:29:05,122 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:05,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:05,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1861315819, now seen corresponding path program 2 times [2024-02-05 10:29:05,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:05,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309110141] [2024-02-05 10:29:05,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:05,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:05,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:05,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:05,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:05,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309110141] [2024-02-05 10:29:05,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309110141] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:05,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:05,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:29:05,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488708998] [2024-02-05 10:29:05,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:05,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:29:05,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:05,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:29:05,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:29:05,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:05,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 232 transitions, 3303 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:05,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:05,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:05,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:06,003 INFO L124 PetriNetUnfolderBase]: 2272/4327 cut-off events. [2024-02-05 10:29:06,004 INFO L125 PetriNetUnfolderBase]: For 38389/38598 co-relation queries the response was YES. [2024-02-05 10:29:06,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20415 conditions, 4327 events. 2272/4327 cut-off events. For 38389/38598 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 29255 event pairs, 822 based on Foata normal form. 76/4120 useless extension candidates. Maximal degree in co-relation 20315. Up to 3333 conditions per place. [2024-02-05 10:29:06,057 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 196 selfloop transitions, 40 changer transitions 0/262 dead transitions. [2024-02-05 10:29:06,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 262 transitions, 3906 flow [2024-02-05 10:29:06,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:29:06,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:29:06,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 229 transitions. [2024-02-05 10:29:06,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4481409001956947 [2024-02-05 10:29:06,059 INFO L175 Difference]: Start difference. First operand has 229 places, 232 transitions, 3303 flow. Second operand 7 states and 229 transitions. [2024-02-05 10:29:06,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 262 transitions, 3906 flow [2024-02-05 10:29:06,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 262 transitions, 3716 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-02-05 10:29:06,165 INFO L231 Difference]: Finished difference. Result has 232 places, 236 transitions, 3250 flow [2024-02-05 10:29:06,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3113, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3250, PETRI_PLACES=232, PETRI_TRANSITIONS=236} [2024-02-05 10:29:06,166 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 155 predicate places. [2024-02-05 10:29:06,166 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 236 transitions, 3250 flow [2024-02-05 10:29:06,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:06,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:06,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:06,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-02-05 10:29:06,167 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:06,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:06,167 INFO L85 PathProgramCache]: Analyzing trace with hash 670526463, now seen corresponding path program 3 times [2024-02-05 10:29:06,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:06,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148916929] [2024-02-05 10:29:06,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:06,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:06,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:06,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:06,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:06,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148916929] [2024-02-05 10:29:06,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148916929] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:06,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:06,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:29:06,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908285889] [2024-02-05 10:29:06,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:06,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:29:06,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:06,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:29:06,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:29:06,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:06,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 236 transitions, 3250 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:06,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:06,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:06,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:07,132 INFO L124 PetriNetUnfolderBase]: 2302/4365 cut-off events. [2024-02-05 10:29:07,132 INFO L125 PetriNetUnfolderBase]: For 35786/36008 co-relation queries the response was YES. [2024-02-05 10:29:07,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20348 conditions, 4365 events. 2302/4365 cut-off events. For 35786/36008 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 29317 event pairs, 777 based on Foata normal form. 82/4157 useless extension candidates. Maximal degree in co-relation 20246. Up to 3361 conditions per place. [2024-02-05 10:29:07,167 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 195 selfloop transitions, 41 changer transitions 0/262 dead transitions. [2024-02-05 10:29:07,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 262 transitions, 3835 flow [2024-02-05 10:29:07,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:29:07,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:29:07,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 203 transitions. [2024-02-05 10:29:07,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634703196347032 [2024-02-05 10:29:07,168 INFO L175 Difference]: Start difference. First operand has 232 places, 236 transitions, 3250 flow. Second operand 6 states and 203 transitions. [2024-02-05 10:29:07,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 262 transitions, 3835 flow [2024-02-05 10:29:07,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 262 transitions, 3775 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-02-05 10:29:07,258 INFO L231 Difference]: Finished difference. Result has 234 places, 238 transitions, 3303 flow [2024-02-05 10:29:07,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3194, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3303, PETRI_PLACES=234, PETRI_TRANSITIONS=238} [2024-02-05 10:29:07,258 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 157 predicate places. [2024-02-05 10:29:07,259 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 238 transitions, 3303 flow [2024-02-05 10:29:07,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:07,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:07,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:07,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-02-05 10:29:07,259 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:07,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:07,260 INFO L85 PathProgramCache]: Analyzing trace with hash 671600613, now seen corresponding path program 4 times [2024-02-05 10:29:07,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:07,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236001326] [2024-02-05 10:29:07,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:07,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:07,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:07,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:07,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:07,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236001326] [2024-02-05 10:29:07,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236001326] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:07,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:07,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:29:07,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650007777] [2024-02-05 10:29:07,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:07,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:29:07,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:07,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:29:07,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:29:07,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:07,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 238 transitions, 3303 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:07,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:07,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:07,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:08,115 INFO L124 PetriNetUnfolderBase]: 2296/4352 cut-off events. [2024-02-05 10:29:08,115 INFO L125 PetriNetUnfolderBase]: For 36422/36614 co-relation queries the response was YES. [2024-02-05 10:29:08,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20329 conditions, 4352 events. 2296/4352 cut-off events. For 36422/36614 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 29246 event pairs, 782 based on Foata normal form. 74/4130 useless extension candidates. Maximal degree in co-relation 20227. Up to 3361 conditions per place. [2024-02-05 10:29:08,159 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 193 selfloop transitions, 39 changer transitions 0/258 dead transitions. [2024-02-05 10:29:08,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 258 transitions, 3843 flow [2024-02-05 10:29:08,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:29:08,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:29:08,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 198 transitions. [2024-02-05 10:29:08,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520547945205479 [2024-02-05 10:29:08,161 INFO L175 Difference]: Start difference. First operand has 234 places, 238 transitions, 3303 flow. Second operand 6 states and 198 transitions. [2024-02-05 10:29:08,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 258 transitions, 3843 flow [2024-02-05 10:29:08,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 258 transitions, 3784 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-02-05 10:29:08,255 INFO L231 Difference]: Finished difference. Result has 236 places, 238 transitions, 3327 flow [2024-02-05 10:29:08,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3244, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3327, PETRI_PLACES=236, PETRI_TRANSITIONS=238} [2024-02-05 10:29:08,256 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 159 predicate places. [2024-02-05 10:29:08,256 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 238 transitions, 3327 flow [2024-02-05 10:29:08,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:08,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:08,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:08,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-02-05 10:29:08,257 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:08,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:08,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1188406002, now seen corresponding path program 1 times [2024-02-05 10:29:08,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:08,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591867238] [2024-02-05 10:29:08,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:08,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:08,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:08,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:08,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:08,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591867238] [2024-02-05 10:29:08,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591867238] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:08,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:08,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:29:08,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563239891] [2024-02-05 10:29:08,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:08,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:29:08,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:08,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:29:08,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:29:08,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:08,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 238 transitions, 3327 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:08,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:08,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:08,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:09,080 INFO L124 PetriNetUnfolderBase]: 1787/3454 cut-off events. [2024-02-05 10:29:09,081 INFO L125 PetriNetUnfolderBase]: For 29896/29919 co-relation queries the response was YES. [2024-02-05 10:29:09,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16183 conditions, 3454 events. 1787/3454 cut-off events. For 29896/29919 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 23193 event pairs, 649 based on Foata normal form. 19/3311 useless extension candidates. Maximal degree in co-relation 16081. Up to 2792 conditions per place. [2024-02-05 10:29:09,118 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 199 selfloop transitions, 65 changer transitions 0/284 dead transitions. [2024-02-05 10:29:09,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 284 transitions, 4291 flow [2024-02-05 10:29:09,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:29:09,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:29:09,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 277 transitions. [2024-02-05 10:29:09,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4216133942161339 [2024-02-05 10:29:09,119 INFO L175 Difference]: Start difference. First operand has 236 places, 238 transitions, 3327 flow. Second operand 9 states and 277 transitions. [2024-02-05 10:29:09,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 284 transitions, 4291 flow [2024-02-05 10:29:09,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 284 transitions, 4209 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-02-05 10:29:09,205 INFO L231 Difference]: Finished difference. Result has 244 places, 264 transitions, 3806 flow [2024-02-05 10:29:09,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3249, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3806, PETRI_PLACES=244, PETRI_TRANSITIONS=264} [2024-02-05 10:29:09,205 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 167 predicate places. [2024-02-05 10:29:09,205 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 264 transitions, 3806 flow [2024-02-05 10:29:09,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:09,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:09,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:09,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-02-05 10:29:09,206 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:09,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:09,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1546796256, now seen corresponding path program 1 times [2024-02-05 10:29:09,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:09,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613047306] [2024-02-05 10:29:09,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:09,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:09,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:09,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:09,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:09,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613047306] [2024-02-05 10:29:09,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613047306] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:09,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:09,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:29:09,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92665096] [2024-02-05 10:29:09,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:09,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:29:09,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:09,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:29:09,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:29:09,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:29:09,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 264 transitions, 3806 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:09,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:09,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:29:09,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:10,103 INFO L124 PetriNetUnfolderBase]: 1538/3147 cut-off events. [2024-02-05 10:29:10,104 INFO L125 PetriNetUnfolderBase]: For 33337/33443 co-relation queries the response was YES. [2024-02-05 10:29:10,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15605 conditions, 3147 events. 1538/3147 cut-off events. For 33337/33443 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 22054 event pairs, 420 based on Foata normal form. 52/3038 useless extension candidates. Maximal degree in co-relation 15499. Up to 2260 conditions per place. [2024-02-05 10:29:10,138 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 203 selfloop transitions, 40 changer transitions 0/282 dead transitions. [2024-02-05 10:29:10,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 282 transitions, 4375 flow [2024-02-05 10:29:10,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:29:10,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:29:10,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 279 transitions. [2024-02-05 10:29:10,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5459882583170255 [2024-02-05 10:29:10,140 INFO L175 Difference]: Start difference. First operand has 244 places, 264 transitions, 3806 flow. Second operand 7 states and 279 transitions. [2024-02-05 10:29:10,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 282 transitions, 4375 flow [2024-02-05 10:29:10,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 282 transitions, 4313 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-02-05 10:29:10,229 INFO L231 Difference]: Finished difference. Result has 249 places, 266 transitions, 3869 flow [2024-02-05 10:29:10,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3744, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3869, PETRI_PLACES=249, PETRI_TRANSITIONS=266} [2024-02-05 10:29:10,229 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 172 predicate places. [2024-02-05 10:29:10,229 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 266 transitions, 3869 flow [2024-02-05 10:29:10,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:10,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:10,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:10,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-02-05 10:29:10,230 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:10,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:10,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1397308596, now seen corresponding path program 2 times [2024-02-05 10:29:10,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:10,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931093442] [2024-02-05 10:29:10,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:10,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:10,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:10,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:10,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:10,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931093442] [2024-02-05 10:29:10,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931093442] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:10,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:10,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:29:10,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176922138] [2024-02-05 10:29:10,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:10,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:29:10,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:10,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:29:10,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:29:10,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:10,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 266 transitions, 3869 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:10,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:10,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:10,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:11,144 INFO L124 PetriNetUnfolderBase]: 1787/3452 cut-off events. [2024-02-05 10:29:11,145 INFO L125 PetriNetUnfolderBase]: For 32703/32726 co-relation queries the response was YES. [2024-02-05 10:29:11,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16673 conditions, 3452 events. 1787/3452 cut-off events. For 32703/32726 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 23239 event pairs, 646 based on Foata normal form. 19/3352 useless extension candidates. Maximal degree in co-relation 16566. Up to 2724 conditions per place. [2024-02-05 10:29:11,180 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 204 selfloop transitions, 74 changer transitions 0/298 dead transitions. [2024-02-05 10:29:11,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 298 transitions, 4649 flow [2024-02-05 10:29:11,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-05 10:29:11,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-05 10:29:11,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 299 transitions. [2024-02-05 10:29:11,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4095890410958904 [2024-02-05 10:29:11,181 INFO L175 Difference]: Start difference. First operand has 249 places, 266 transitions, 3869 flow. Second operand 10 states and 299 transitions. [2024-02-05 10:29:11,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 298 transitions, 4649 flow [2024-02-05 10:29:11,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 298 transitions, 4542 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-02-05 10:29:11,276 INFO L231 Difference]: Finished difference. Result has 255 places, 277 transitions, 4103 flow [2024-02-05 10:29:11,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3762, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4103, PETRI_PLACES=255, PETRI_TRANSITIONS=277} [2024-02-05 10:29:11,277 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 178 predicate places. [2024-02-05 10:29:11,277 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 277 transitions, 4103 flow [2024-02-05 10:29:11,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:11,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:11,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:11,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-02-05 10:29:11,277 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:11,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:11,278 INFO L85 PathProgramCache]: Analyzing trace with hash -714349246, now seen corresponding path program 1 times [2024-02-05 10:29:11,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:11,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090707772] [2024-02-05 10:29:11,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:11,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:11,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:11,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:11,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:11,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090707772] [2024-02-05 10:29:11,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090707772] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:11,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:11,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:29:11,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642770044] [2024-02-05 10:29:11,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:11,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:29:11,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:11,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:29:11,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:29:11,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:29:11,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 277 transitions, 4103 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:11,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:11,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:29:11,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:12,011 INFO L124 PetriNetUnfolderBase]: 1487/3056 cut-off events. [2024-02-05 10:29:12,012 INFO L125 PetriNetUnfolderBase]: For 35579/35681 co-relation queries the response was YES. [2024-02-05 10:29:12,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15582 conditions, 3056 events. 1487/3056 cut-off events. For 35579/35681 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 21380 event pairs, 452 based on Foata normal form. 56/2965 useless extension candidates. Maximal degree in co-relation 15474. Up to 2207 conditions per place. [2024-02-05 10:29:12,045 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 220 selfloop transitions, 30 changer transitions 0/289 dead transitions. [2024-02-05 10:29:12,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 289 transitions, 4661 flow [2024-02-05 10:29:12,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-05 10:29:12,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-05 10:29:12,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 208 transitions. [2024-02-05 10:29:12,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5698630136986301 [2024-02-05 10:29:12,046 INFO L175 Difference]: Start difference. First operand has 255 places, 277 transitions, 4103 flow. Second operand 5 states and 208 transitions. [2024-02-05 10:29:12,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 289 transitions, 4661 flow [2024-02-05 10:29:12,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 289 transitions, 4557 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-02-05 10:29:12,141 INFO L231 Difference]: Finished difference. Result has 258 places, 279 transitions, 4107 flow [2024-02-05 10:29:12,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3999, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4107, PETRI_PLACES=258, PETRI_TRANSITIONS=279} [2024-02-05 10:29:12,141 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 181 predicate places. [2024-02-05 10:29:12,141 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 279 transitions, 4107 flow [2024-02-05 10:29:12,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:12,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:12,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:12,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-02-05 10:29:12,142 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:12,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:12,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1368953142, now seen corresponding path program 1 times [2024-02-05 10:29:12,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:12,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703090766] [2024-02-05 10:29:12,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:12,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:12,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:12,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:12,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703090766] [2024-02-05 10:29:12,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703090766] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:12,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:12,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:29:12,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930216935] [2024-02-05 10:29:12,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:12,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:29:12,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:12,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:29:12,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:29:12,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:29:12,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 279 transitions, 4107 flow. Second operand has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:12,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:12,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:29:12,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:12,859 INFO L124 PetriNetUnfolderBase]: 1516/3121 cut-off events. [2024-02-05 10:29:12,860 INFO L125 PetriNetUnfolderBase]: For 37013/37116 co-relation queries the response was YES. [2024-02-05 10:29:12,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15815 conditions, 3121 events. 1516/3121 cut-off events. For 37013/37116 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 21759 event pairs, 351 based on Foata normal form. 56/3049 useless extension candidates. Maximal degree in co-relation 15704. Up to 1868 conditions per place. [2024-02-05 10:29:12,894 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 185 selfloop transitions, 87 changer transitions 0/311 dead transitions. [2024-02-05 10:29:12,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 311 transitions, 4852 flow [2024-02-05 10:29:12,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:29:12,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:29:12,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 328 transitions. [2024-02-05 10:29:12,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5616438356164384 [2024-02-05 10:29:12,896 INFO L175 Difference]: Start difference. First operand has 258 places, 279 transitions, 4107 flow. Second operand 8 states and 328 transitions. [2024-02-05 10:29:12,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 311 transitions, 4852 flow [2024-02-05 10:29:13,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 311 transitions, 4786 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-02-05 10:29:13,004 INFO L231 Difference]: Finished difference. Result has 265 places, 285 transitions, 4286 flow [2024-02-05 10:29:13,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4041, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4286, PETRI_PLACES=265, PETRI_TRANSITIONS=285} [2024-02-05 10:29:13,005 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 188 predicate places. [2024-02-05 10:29:13,005 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 285 transitions, 4286 flow [2024-02-05 10:29:13,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:13,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:13,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:13,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-02-05 10:29:13,006 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:13,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:13,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1368601452, now seen corresponding path program 1 times [2024-02-05 10:29:13,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:13,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441054957] [2024-02-05 10:29:13,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:13,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:13,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:13,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:13,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:13,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441054957] [2024-02-05 10:29:13,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441054957] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:13,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:13,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:29:13,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655447480] [2024-02-05 10:29:13,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:13,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:29:13,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:13,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:29:13,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:29:13,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:13,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 285 transitions, 4286 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:13,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:13,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:13,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:13,885 INFO L124 PetriNetUnfolderBase]: 1833/3512 cut-off events. [2024-02-05 10:29:13,886 INFO L125 PetriNetUnfolderBase]: For 37400/37423 co-relation queries the response was YES. [2024-02-05 10:29:13,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17706 conditions, 3512 events. 1833/3512 cut-off events. For 37400/37423 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 23360 event pairs, 560 based on Foata normal form. 19/3429 useless extension candidates. Maximal degree in co-relation 17593. Up to 2715 conditions per place. [2024-02-05 10:29:13,926 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 257 selfloop transitions, 51 changer transitions 0/328 dead transitions. [2024-02-05 10:29:13,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 328 transitions, 5158 flow [2024-02-05 10:29:13,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:29:13,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:29:13,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 258 transitions. [2024-02-05 10:29:13,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417808219178082 [2024-02-05 10:29:13,927 INFO L175 Difference]: Start difference. First operand has 265 places, 285 transitions, 4286 flow. Second operand 8 states and 258 transitions. [2024-02-05 10:29:13,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 328 transitions, 5158 flow [2024-02-05 10:29:14,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 328 transitions, 5020 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-02-05 10:29:14,052 INFO L231 Difference]: Finished difference. Result has 270 places, 298 transitions, 4418 flow [2024-02-05 10:29:14,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4150, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4418, PETRI_PLACES=270, PETRI_TRANSITIONS=298} [2024-02-05 10:29:14,053 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 193 predicate places. [2024-02-05 10:29:14,053 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 298 transitions, 4418 flow [2024-02-05 10:29:14,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:14,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:14,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:14,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-02-05 10:29:14,054 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:14,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:14,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1392170400, now seen corresponding path program 2 times [2024-02-05 10:29:14,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:14,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175224744] [2024-02-05 10:29:14,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:14,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:14,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:14,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:14,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:14,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175224744] [2024-02-05 10:29:14,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175224744] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:14,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:14,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:29:14,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404481810] [2024-02-05 10:29:14,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:14,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:29:14,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:14,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:29:14,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:29:14,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:29:14,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 298 transitions, 4418 flow. Second operand has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:14,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:14,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:29:14,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:14,794 INFO L124 PetriNetUnfolderBase]: 1557/3209 cut-off events. [2024-02-05 10:29:14,794 INFO L125 PetriNetUnfolderBase]: For 37758/37859 co-relation queries the response was YES. [2024-02-05 10:29:14,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16568 conditions, 3209 events. 1557/3209 cut-off events. For 37758/37859 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 22658 event pairs, 286 based on Foata normal form. 55/3130 useless extension candidates. Maximal degree in co-relation 16453. Up to 1852 conditions per place. [2024-02-05 10:29:14,828 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 189 selfloop transitions, 97 changer transitions 0/325 dead transitions. [2024-02-05 10:29:14,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 325 transitions, 5122 flow [2024-02-05 10:29:14,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:29:14,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:29:14,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 327 transitions. [2024-02-05 10:29:14,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.559931506849315 [2024-02-05 10:29:14,829 INFO L175 Difference]: Start difference. First operand has 270 places, 298 transitions, 4418 flow. Second operand 8 states and 327 transitions. [2024-02-05 10:29:14,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 325 transitions, 5122 flow [2024-02-05 10:29:14,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 325 transitions, 5055 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-02-05 10:29:14,950 INFO L231 Difference]: Finished difference. Result has 273 places, 299 transitions, 4558 flow [2024-02-05 10:29:14,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4351, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4558, PETRI_PLACES=273, PETRI_TRANSITIONS=299} [2024-02-05 10:29:14,951 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 196 predicate places. [2024-02-05 10:29:14,951 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 299 transitions, 4558 flow [2024-02-05 10:29:14,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:14,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:14,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:14,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-02-05 10:29:14,952 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:14,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:14,952 INFO L85 PathProgramCache]: Analyzing trace with hash 928660008, now seen corresponding path program 2 times [2024-02-05 10:29:14,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:14,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415298605] [2024-02-05 10:29:14,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:14,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:14,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:15,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:15,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:15,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415298605] [2024-02-05 10:29:15,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415298605] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:15,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:15,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:29:15,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304632694] [2024-02-05 10:29:15,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:15,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:29:15,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:15,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:29:15,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:29:15,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:15,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 299 transitions, 4558 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:15,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:15,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:15,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:15,833 INFO L124 PetriNetUnfolderBase]: 1804/3461 cut-off events. [2024-02-05 10:29:15,834 INFO L125 PetriNetUnfolderBase]: For 36749/36772 co-relation queries the response was YES. [2024-02-05 10:29:15,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17595 conditions, 3461 events. 1804/3461 cut-off events. For 36749/36772 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 22986 event pairs, 555 based on Foata normal form. 27/3386 useless extension candidates. Maximal degree in co-relation 17481. Up to 2700 conditions per place. [2024-02-05 10:29:15,878 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 250 selfloop transitions, 51 changer transitions 0/321 dead transitions. [2024-02-05 10:29:15,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 321 transitions, 5223 flow [2024-02-05 10:29:15,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:29:15,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:29:15,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 224 transitions. [2024-02-05 10:29:15,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4383561643835616 [2024-02-05 10:29:15,880 INFO L175 Difference]: Start difference. First operand has 273 places, 299 transitions, 4558 flow. Second operand 7 states and 224 transitions. [2024-02-05 10:29:15,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 321 transitions, 5223 flow [2024-02-05 10:29:16,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 321 transitions, 5069 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-02-05 10:29:16,006 INFO L231 Difference]: Finished difference. Result has 275 places, 299 transitions, 4515 flow [2024-02-05 10:29:16,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4404, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4515, PETRI_PLACES=275, PETRI_TRANSITIONS=299} [2024-02-05 10:29:16,007 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 198 predicate places. [2024-02-05 10:29:16,007 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 299 transitions, 4515 flow [2024-02-05 10:29:16,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:16,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:16,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:16,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-02-05 10:29:16,008 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:16,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:16,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1446960790, now seen corresponding path program 3 times [2024-02-05 10:29:16,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:16,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3067110] [2024-02-05 10:29:16,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:16,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:16,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:16,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:16,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:16,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3067110] [2024-02-05 10:29:16,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3067110] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:16,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:16,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:29:16,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430659452] [2024-02-05 10:29:16,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:16,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:29:16,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:16,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:29:16,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:29:16,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:16,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 299 transitions, 4515 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:16,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:16,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:16,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:16,893 INFO L124 PetriNetUnfolderBase]: 1814/3479 cut-off events. [2024-02-05 10:29:16,894 INFO L125 PetriNetUnfolderBase]: For 36512/36535 co-relation queries the response was YES. [2024-02-05 10:29:16,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17589 conditions, 3479 events. 1814/3479 cut-off events. For 36512/36535 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 23145 event pairs, 557 based on Foata normal form. 19/3396 useless extension candidates. Maximal degree in co-relation 17474. Up to 2708 conditions per place. [2024-02-05 10:29:16,929 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 258 selfloop transitions, 45 changer transitions 0/323 dead transitions. [2024-02-05 10:29:16,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 323 transitions, 5208 flow [2024-02-05 10:29:16,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:29:16,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:29:16,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 225 transitions. [2024-02-05 10:29:16,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44031311154598823 [2024-02-05 10:29:16,930 INFO L175 Difference]: Start difference. First operand has 275 places, 299 transitions, 4515 flow. Second operand 7 states and 225 transitions. [2024-02-05 10:29:16,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 323 transitions, 5208 flow [2024-02-05 10:29:17,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 323 transitions, 5105 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-02-05 10:29:17,053 INFO L231 Difference]: Finished difference. Result has 276 places, 301 transitions, 4529 flow [2024-02-05 10:29:17,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4414, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4529, PETRI_PLACES=276, PETRI_TRANSITIONS=301} [2024-02-05 10:29:17,053 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 199 predicate places. [2024-02-05 10:29:17,053 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 301 transitions, 4529 flow [2024-02-05 10:29:17,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:17,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:17,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:17,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-02-05 10:29:17,054 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:17,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:17,054 INFO L85 PathProgramCache]: Analyzing trace with hash -900335302, now seen corresponding path program 1 times [2024-02-05 10:29:17,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:17,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621785169] [2024-02-05 10:29:17,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:17,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:17,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:17,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:17,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:17,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621785169] [2024-02-05 10:29:17,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621785169] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:17,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:17,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:29:17,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055501934] [2024-02-05 10:29:17,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:17,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:29:17,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:17,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:29:17,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:29:17,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:29:17,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 301 transitions, 4529 flow. Second operand has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:17,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:17,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:29:17,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:17,836 INFO L124 PetriNetUnfolderBase]: 1546/3184 cut-off events. [2024-02-05 10:29:17,836 INFO L125 PetriNetUnfolderBase]: For 39234/39334 co-relation queries the response was YES. [2024-02-05 10:29:17,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16432 conditions, 3184 events. 1546/3184 cut-off events. For 39234/39334 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 22496 event pairs, 445 based on Foata normal form. 47/3087 useless extension candidates. Maximal degree in co-relation 16318. Up to 1983 conditions per place. [2024-02-05 10:29:17,874 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 232 selfloop transitions, 81 changer transitions 0/352 dead transitions. [2024-02-05 10:29:17,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 352 transitions, 5636 flow [2024-02-05 10:29:17,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:29:17,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:29:17,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 330 transitions. [2024-02-05 10:29:17,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.565068493150685 [2024-02-05 10:29:17,876 INFO L175 Difference]: Start difference. First operand has 276 places, 301 transitions, 4529 flow. Second operand 8 states and 330 transitions. [2024-02-05 10:29:17,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 352 transitions, 5636 flow [2024-02-05 10:29:17,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 352 transitions, 5563 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-02-05 10:29:18,001 INFO L231 Difference]: Finished difference. Result has 280 places, 316 transitions, 4851 flow [2024-02-05 10:29:18,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4456, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4851, PETRI_PLACES=280, PETRI_TRANSITIONS=316} [2024-02-05 10:29:18,002 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 203 predicate places. [2024-02-05 10:29:18,002 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 316 transitions, 4851 flow [2024-02-05 10:29:18,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:18,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:18,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:18,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-02-05 10:29:18,003 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:18,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:18,004 INFO L85 PathProgramCache]: Analyzing trace with hash -817182764, now seen corresponding path program 4 times [2024-02-05 10:29:18,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:18,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814014031] [2024-02-05 10:29:18,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:18,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:18,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:18,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:18,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:18,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814014031] [2024-02-05 10:29:18,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814014031] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:18,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:18,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:29:18,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521582193] [2024-02-05 10:29:18,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:18,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:29:18,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:18,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:29:18,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:29:18,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:18,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 316 transitions, 4851 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:18,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:18,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:18,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:18,993 INFO L124 PetriNetUnfolderBase]: 1816/3474 cut-off events. [2024-02-05 10:29:18,993 INFO L125 PetriNetUnfolderBase]: For 38677/38700 co-relation queries the response was YES. [2024-02-05 10:29:19,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17902 conditions, 3474 events. 1816/3474 cut-off events. For 38677/38700 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 23188 event pairs, 575 based on Foata normal form. 19/3388 useless extension candidates. Maximal degree in co-relation 17787. Up to 2728 conditions per place. [2024-02-05 10:29:19,031 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 269 selfloop transitions, 45 changer transitions 0/334 dead transitions. [2024-02-05 10:29:19,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 334 transitions, 5515 flow [2024-02-05 10:29:19,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:29:19,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:29:19,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 221 transitions. [2024-02-05 10:29:19,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4324853228962818 [2024-02-05 10:29:19,033 INFO L175 Difference]: Start difference. First operand has 280 places, 316 transitions, 4851 flow. Second operand 7 states and 221 transitions. [2024-02-05 10:29:19,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 334 transitions, 5515 flow [2024-02-05 10:29:19,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 334 transitions, 5397 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-02-05 10:29:19,162 INFO L231 Difference]: Finished difference. Result has 275 places, 315 transitions, 4801 flow [2024-02-05 10:29:19,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4711, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4801, PETRI_PLACES=275, PETRI_TRANSITIONS=315} [2024-02-05 10:29:19,162 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 198 predicate places. [2024-02-05 10:29:19,163 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 315 transitions, 4801 flow [2024-02-05 10:29:19,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:19,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:19,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:19,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-02-05 10:29:19,163 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:19,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:19,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1820271472, now seen corresponding path program 2 times [2024-02-05 10:29:19,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:19,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989434865] [2024-02-05 10:29:19,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:19,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:19,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:19,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:19,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:19,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989434865] [2024-02-05 10:29:19,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989434865] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:19,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:19,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:29:19,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173593778] [2024-02-05 10:29:19,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:19,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:29:19,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:19,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:29:19,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:29:19,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:29:19,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 315 transitions, 4801 flow. Second operand has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:19,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:19,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:29:19,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:19,920 INFO L124 PetriNetUnfolderBase]: 1548/3188 cut-off events. [2024-02-05 10:29:19,920 INFO L125 PetriNetUnfolderBase]: For 40614/40714 co-relation queries the response was YES. [2024-02-05 10:29:19,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16508 conditions, 3188 events. 1548/3188 cut-off events. For 40614/40714 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 22550 event pairs, 437 based on Foata normal form. 47/3092 useless extension candidates. Maximal degree in co-relation 16400. Up to 1969 conditions per place. [2024-02-05 10:29:19,954 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 226 selfloop transitions, 88 changer transitions 0/353 dead transitions. [2024-02-05 10:29:19,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 353 transitions, 5715 flow [2024-02-05 10:29:19,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:29:19,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:29:19,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 294 transitions. [2024-02-05 10:29:19,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5753424657534246 [2024-02-05 10:29:19,955 INFO L175 Difference]: Start difference. First operand has 275 places, 315 transitions, 4801 flow. Second operand 7 states and 294 transitions. [2024-02-05 10:29:19,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 353 transitions, 5715 flow [2024-02-05 10:29:20,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 353 transitions, 5592 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-02-05 10:29:20,078 INFO L231 Difference]: Finished difference. Result has 277 places, 320 transitions, 4927 flow [2024-02-05 10:29:20,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4678, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4927, PETRI_PLACES=277, PETRI_TRANSITIONS=320} [2024-02-05 10:29:20,079 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 200 predicate places. [2024-02-05 10:29:20,079 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 320 transitions, 4927 flow [2024-02-05 10:29:20,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:20,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:20,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:20,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-02-05 10:29:20,079 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:20,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:20,080 INFO L85 PathProgramCache]: Analyzing trace with hash -251349052, now seen corresponding path program 1 times [2024-02-05 10:29:20,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:20,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200679377] [2024-02-05 10:29:20,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:20,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:20,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:20,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:20,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:20,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200679377] [2024-02-05 10:29:20,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200679377] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:20,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:20,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:29:20,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481756398] [2024-02-05 10:29:20,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:20,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:29:20,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:20,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:29:20,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:29:20,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:20,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 320 transitions, 4927 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:20,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:20,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:20,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:21,199 INFO L124 PetriNetUnfolderBase]: 2355/4428 cut-off events. [2024-02-05 10:29:21,199 INFO L125 PetriNetUnfolderBase]: For 49910/50119 co-relation queries the response was YES. [2024-02-05 10:29:21,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22668 conditions, 4428 events. 2355/4428 cut-off events. For 49910/50119 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 29678 event pairs, 701 based on Foata normal form. 78/4291 useless extension candidates. Maximal degree in co-relation 22558. Up to 3498 conditions per place. [2024-02-05 10:29:21,238 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 281 selfloop transitions, 56 changer transitions 0/364 dead transitions. [2024-02-05 10:29:21,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 364 transitions, 5912 flow [2024-02-05 10:29:21,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:29:21,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:29:21,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 258 transitions. [2024-02-05 10:29:21,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417808219178082 [2024-02-05 10:29:21,240 INFO L175 Difference]: Start difference. First operand has 277 places, 320 transitions, 4927 flow. Second operand 8 states and 258 transitions. [2024-02-05 10:29:21,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 364 transitions, 5912 flow [2024-02-05 10:29:21,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 364 transitions, 5779 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-02-05 10:29:21,386 INFO L231 Difference]: Finished difference. Result has 282 places, 336 transitions, 5172 flow [2024-02-05 10:29:21,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4797, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5172, PETRI_PLACES=282, PETRI_TRANSITIONS=336} [2024-02-05 10:29:21,386 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 205 predicate places. [2024-02-05 10:29:21,387 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 336 transitions, 5172 flow [2024-02-05 10:29:21,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:21,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:21,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:21,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-02-05 10:29:21,387 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:21,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:21,388 INFO L85 PathProgramCache]: Analyzing trace with hash 887775766, now seen corresponding path program 3 times [2024-02-05 10:29:21,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:21,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42455177] [2024-02-05 10:29:21,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:21,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:21,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:21,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:21,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:21,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42455177] [2024-02-05 10:29:21,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42455177] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:21,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:21,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:29:21,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203894837] [2024-02-05 10:29:21,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:21,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:29:21,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:21,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:29:21,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:29:21,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:29:21,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 336 transitions, 5172 flow. Second operand has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:21,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:21,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:29:21,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:22,179 INFO L124 PetriNetUnfolderBase]: 1603/3284 cut-off events. [2024-02-05 10:29:22,179 INFO L125 PetriNetUnfolderBase]: For 42745/42856 co-relation queries the response was YES. [2024-02-05 10:29:22,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17315 conditions, 3284 events. 1603/3284 cut-off events. For 42745/42856 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 23275 event pairs, 447 based on Foata normal form. 44/3171 useless extension candidates. Maximal degree in co-relation 17204. Up to 2211 conditions per place. [2024-02-05 10:29:22,215 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 242 selfloop transitions, 84 changer transitions 0/365 dead transitions. [2024-02-05 10:29:22,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 365 transitions, 6053 flow [2024-02-05 10:29:22,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:29:22,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:29:22,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 254 transitions. [2024-02-05 10:29:22,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5799086757990868 [2024-02-05 10:29:22,217 INFO L175 Difference]: Start difference. First operand has 282 places, 336 transitions, 5172 flow. Second operand 6 states and 254 transitions. [2024-02-05 10:29:22,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 365 transitions, 6053 flow [2024-02-05 10:29:22,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 365 transitions, 6006 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-02-05 10:29:22,359 INFO L231 Difference]: Finished difference. Result has 286 places, 344 transitions, 5461 flow [2024-02-05 10:29:22,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5125, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5461, PETRI_PLACES=286, PETRI_TRANSITIONS=344} [2024-02-05 10:29:22,360 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 209 predicate places. [2024-02-05 10:29:22,360 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 344 transitions, 5461 flow [2024-02-05 10:29:22,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:22,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:22,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:22,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-02-05 10:29:22,361 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:22,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:22,361 INFO L85 PathProgramCache]: Analyzing trace with hash -120412422, now seen corresponding path program 4 times [2024-02-05 10:29:22,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:22,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028131951] [2024-02-05 10:29:22,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:22,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:22,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:22,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:22,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028131951] [2024-02-05 10:29:22,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028131951] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:22,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:22,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:29:22,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424813423] [2024-02-05 10:29:22,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:22,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:29:22,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:22,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:29:22,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:29:22,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:29:22,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 344 transitions, 5461 flow. Second operand has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:22,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:22,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:29:22,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:23,181 INFO L124 PetriNetUnfolderBase]: 1597/3275 cut-off events. [2024-02-05 10:29:23,182 INFO L125 PetriNetUnfolderBase]: For 45084/45194 co-relation queries the response was YES. [2024-02-05 10:29:23,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17533 conditions, 3275 events. 1597/3275 cut-off events. For 45084/45194 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 23201 event pairs, 437 based on Foata normal form. 45/3162 useless extension candidates. Maximal degree in co-relation 17420. Up to 2209 conditions per place. [2024-02-05 10:29:23,216 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 238 selfloop transitions, 90 changer transitions 0/367 dead transitions. [2024-02-05 10:29:23,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 367 transitions, 6221 flow [2024-02-05 10:29:23,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:29:23,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:29:23,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 321 transitions. [2024-02-05 10:29:23,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5496575342465754 [2024-02-05 10:29:23,218 INFO L175 Difference]: Start difference. First operand has 286 places, 344 transitions, 5461 flow. Second operand 8 states and 321 transitions. [2024-02-05 10:29:23,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 367 transitions, 6221 flow [2024-02-05 10:29:23,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 367 transitions, 6057 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-02-05 10:29:23,359 INFO L231 Difference]: Finished difference. Result has 290 places, 345 transitions, 5497 flow [2024-02-05 10:29:23,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5299, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5497, PETRI_PLACES=290, PETRI_TRANSITIONS=345} [2024-02-05 10:29:23,360 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 213 predicate places. [2024-02-05 10:29:23,360 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 345 transitions, 5497 flow [2024-02-05 10:29:23,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:23,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:23,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:23,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-02-05 10:29:23,360 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:23,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:23,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1549041070, now seen corresponding path program 3 times [2024-02-05 10:29:23,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:23,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129822699] [2024-02-05 10:29:23,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:23,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:23,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:23,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:23,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:23,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129822699] [2024-02-05 10:29:23,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129822699] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:23,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:23,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:29:23,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872513804] [2024-02-05 10:29:23,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:23,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:29:23,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:23,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:29:23,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:29:23,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:23,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 345 transitions, 5497 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:23,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:23,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:23,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:24,292 INFO L124 PetriNetUnfolderBase]: 1883/3604 cut-off events. [2024-02-05 10:29:24,292 INFO L125 PetriNetUnfolderBase]: For 42123/42166 co-relation queries the response was YES. [2024-02-05 10:29:24,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18845 conditions, 3604 events. 1883/3604 cut-off events. For 42123/42166 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 24140 event pairs, 480 based on Foata normal form. 9/3500 useless extension candidates. Maximal degree in co-relation 18731. Up to 2333 conditions per place. [2024-02-05 10:29:24,333 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 267 selfloop transitions, 101 changer transitions 0/388 dead transitions. [2024-02-05 10:29:24,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 388 transitions, 6431 flow [2024-02-05 10:29:24,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:29:24,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:29:24,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 289 transitions. [2024-02-05 10:29:24,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398782343987823 [2024-02-05 10:29:24,334 INFO L175 Difference]: Start difference. First operand has 290 places, 345 transitions, 5497 flow. Second operand 9 states and 289 transitions. [2024-02-05 10:29:24,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 388 transitions, 6431 flow [2024-02-05 10:29:24,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 388 transitions, 6241 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-02-05 10:29:24,476 INFO L231 Difference]: Finished difference. Result has 294 places, 353 transitions, 5596 flow [2024-02-05 10:29:24,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5307, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5596, PETRI_PLACES=294, PETRI_TRANSITIONS=353} [2024-02-05 10:29:24,477 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 217 predicate places. [2024-02-05 10:29:24,477 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 353 transitions, 5596 flow [2024-02-05 10:29:24,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:24,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:24,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:24,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-02-05 10:29:24,477 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:24,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:24,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1921327780, now seen corresponding path program 4 times [2024-02-05 10:29:24,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:24,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031031079] [2024-02-05 10:29:24,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:24,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:24,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:24,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:24,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:24,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031031079] [2024-02-05 10:29:24,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031031079] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:24,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:24,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:29:24,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235726770] [2024-02-05 10:29:24,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:24,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:29:24,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:24,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:29:24,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:29:24,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:24,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 353 transitions, 5596 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:24,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:24,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:24,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:25,450 INFO L124 PetriNetUnfolderBase]: 1907/3644 cut-off events. [2024-02-05 10:29:25,450 INFO L125 PetriNetUnfolderBase]: For 42228/42271 co-relation queries the response was YES. [2024-02-05 10:29:25,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19174 conditions, 3644 events. 1907/3644 cut-off events. For 42228/42271 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 24382 event pairs, 480 based on Foata normal form. 9/3540 useless extension candidates. Maximal degree in co-relation 19058. Up to 2345 conditions per place. [2024-02-05 10:29:25,493 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 265 selfloop transitions, 109 changer transitions 0/394 dead transitions. [2024-02-05 10:29:25,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 394 transitions, 6560 flow [2024-02-05 10:29:25,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:29:25,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:29:25,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 289 transitions. [2024-02-05 10:29:25,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398782343987823 [2024-02-05 10:29:25,494 INFO L175 Difference]: Start difference. First operand has 294 places, 353 transitions, 5596 flow. Second operand 9 states and 289 transitions. [2024-02-05 10:29:25,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 394 transitions, 6560 flow [2024-02-05 10:29:25,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 394 transitions, 6401 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-02-05 10:29:25,655 INFO L231 Difference]: Finished difference. Result has 297 places, 359 transitions, 5710 flow [2024-02-05 10:29:25,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5445, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5710, PETRI_PLACES=297, PETRI_TRANSITIONS=359} [2024-02-05 10:29:25,655 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 220 predicate places. [2024-02-05 10:29:25,655 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 359 transitions, 5710 flow [2024-02-05 10:29:25,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:25,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:25,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:25,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-02-05 10:29:25,656 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:25,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:25,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1916859130, now seen corresponding path program 5 times [2024-02-05 10:29:25,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:25,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818628870] [2024-02-05 10:29:25,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:25,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:25,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:25,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:25,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:25,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818628870] [2024-02-05 10:29:25,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818628870] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:25,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:25,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:29:25,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008653812] [2024-02-05 10:29:25,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:25,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:29:25,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:25,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:29:25,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:29:25,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:25,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 359 transitions, 5710 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:25,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:25,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:25,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:26,596 INFO L124 PetriNetUnfolderBase]: 1907/3604 cut-off events. [2024-02-05 10:29:26,596 INFO L125 PetriNetUnfolderBase]: For 42424/42467 co-relation queries the response was YES. [2024-02-05 10:29:26,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19189 conditions, 3604 events. 1907/3604 cut-off events. For 42424/42467 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 24016 event pairs, 330 based on Foata normal form. 9/3517 useless extension candidates. Maximal degree in co-relation 19072. Up to 2349 conditions per place. [2024-02-05 10:29:26,633 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 261 selfloop transitions, 115 changer transitions 0/396 dead transitions. [2024-02-05 10:29:26,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 396 transitions, 6627 flow [2024-02-05 10:29:26,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:29:26,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:29:26,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 288 transitions. [2024-02-05 10:29:26,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4383561643835616 [2024-02-05 10:29:26,634 INFO L175 Difference]: Start difference. First operand has 297 places, 359 transitions, 5710 flow. Second operand 9 states and 288 transitions. [2024-02-05 10:29:26,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 396 transitions, 6627 flow [2024-02-05 10:29:26,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 396 transitions, 6478 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-02-05 10:29:26,786 INFO L231 Difference]: Finished difference. Result has 303 places, 362 transitions, 5859 flow [2024-02-05 10:29:26,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5563, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5859, PETRI_PLACES=303, PETRI_TRANSITIONS=362} [2024-02-05 10:29:26,787 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 226 predicate places. [2024-02-05 10:29:26,787 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 362 transitions, 5859 flow [2024-02-05 10:29:26,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:26,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:26,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:26,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-02-05 10:29:26,787 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:26,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:26,788 INFO L85 PathProgramCache]: Analyzing trace with hash 323902608, now seen corresponding path program 1 times [2024-02-05 10:29:26,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:26,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673505786] [2024-02-05 10:29:26,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:26,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:26,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:26,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:27,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:27,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673505786] [2024-02-05 10:29:27,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673505786] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:27,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:27,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:29:27,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643437415] [2024-02-05 10:29:27,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:27,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:29:27,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:27,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:29:27,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:29:27,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:27,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 362 transitions, 5859 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:27,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:27,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:27,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:27,835 INFO L124 PetriNetUnfolderBase]: 2406/4511 cut-off events. [2024-02-05 10:29:27,835 INFO L125 PetriNetUnfolderBase]: For 56487/56698 co-relation queries the response was YES. [2024-02-05 10:29:27,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24115 conditions, 4511 events. 2406/4511 cut-off events. For 56487/56698 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 30247 event pairs, 644 based on Foata normal form. 79/4368 useless extension candidates. Maximal degree in co-relation 23996. Up to 2897 conditions per place. [2024-02-05 10:29:27,889 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 276 selfloop transitions, 93 changer transitions 0/399 dead transitions. [2024-02-05 10:29:27,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 399 transitions, 6756 flow [2024-02-05 10:29:27,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:29:27,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:29:27,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 288 transitions. [2024-02-05 10:29:27,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4383561643835616 [2024-02-05 10:29:27,891 INFO L175 Difference]: Start difference. First operand has 303 places, 362 transitions, 5859 flow. Second operand 9 states and 288 transitions. [2024-02-05 10:29:27,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 399 transitions, 6756 flow [2024-02-05 10:29:28,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 399 transitions, 6556 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-02-05 10:29:28,069 INFO L231 Difference]: Finished difference. Result has 305 places, 362 transitions, 5850 flow [2024-02-05 10:29:28,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5659, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5850, PETRI_PLACES=305, PETRI_TRANSITIONS=362} [2024-02-05 10:29:28,070 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 228 predicate places. [2024-02-05 10:29:28,070 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 362 transitions, 5850 flow [2024-02-05 10:29:28,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:28,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:28,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:28,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-02-05 10:29:28,071 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:28,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:28,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1652488270, now seen corresponding path program 2 times [2024-02-05 10:29:28,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:28,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491897741] [2024-02-05 10:29:28,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:28,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:28,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:28,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:28,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:28,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491897741] [2024-02-05 10:29:28,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491897741] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:28,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:28,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:29:28,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630192816] [2024-02-05 10:29:28,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:28,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:29:28,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:28,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:29:28,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:29:28,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:28,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 362 transitions, 5850 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:28,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:28,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:28,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:29,136 INFO L124 PetriNetUnfolderBase]: 2455/4592 cut-off events. [2024-02-05 10:29:29,137 INFO L125 PetriNetUnfolderBase]: For 56856/57072 co-relation queries the response was YES. [2024-02-05 10:29:29,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24405 conditions, 4592 events. 2455/4592 cut-off events. For 56856/57072 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 30757 event pairs, 655 based on Foata normal form. 80/4452 useless extension candidates. Maximal degree in co-relation 24286. Up to 2910 conditions per place. [2024-02-05 10:29:29,188 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 287 selfloop transitions, 95 changer transitions 0/412 dead transitions. [2024-02-05 10:29:29,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 412 transitions, 6897 flow [2024-02-05 10:29:29,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:29:29,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:29:29,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 292 transitions. [2024-02-05 10:29:29,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-02-05 10:29:29,189 INFO L175 Difference]: Start difference. First operand has 305 places, 362 transitions, 5850 flow. Second operand 9 states and 292 transitions. [2024-02-05 10:29:29,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 412 transitions, 6897 flow [2024-02-05 10:29:29,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 412 transitions, 6750 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-02-05 10:29:29,361 INFO L231 Difference]: Finished difference. Result has 308 places, 372 transitions, 5999 flow [2024-02-05 10:29:29,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5713, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5999, PETRI_PLACES=308, PETRI_TRANSITIONS=372} [2024-02-05 10:29:29,362 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 231 predicate places. [2024-02-05 10:29:29,362 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 372 transitions, 5999 flow [2024-02-05 10:29:29,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:29,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:29,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:29,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-02-05 10:29:29,363 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:29,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:29,363 INFO L85 PathProgramCache]: Analyzing trace with hash -662923126, now seen corresponding path program 3 times [2024-02-05 10:29:29,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:29,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669963144] [2024-02-05 10:29:29,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:29,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:29,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:29,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:29,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:29,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669963144] [2024-02-05 10:29:29,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669963144] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:29,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:29,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:29:29,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178093421] [2024-02-05 10:29:29,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:29,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:29:29,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:29,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:29:29,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:29:29,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:29,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 372 transitions, 5999 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:29,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:29,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:29,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:30,509 INFO L124 PetriNetUnfolderBase]: 2443/4572 cut-off events. [2024-02-05 10:29:30,509 INFO L125 PetriNetUnfolderBase]: For 58468/58686 co-relation queries the response was YES. [2024-02-05 10:29:30,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24340 conditions, 4572 events. 2443/4572 cut-off events. For 58468/58686 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 30735 event pairs, 702 based on Foata normal form. 76/4423 useless extension candidates. Maximal degree in co-relation 24220. Up to 3558 conditions per place. [2024-02-05 10:29:30,562 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 309 selfloop transitions, 62 changer transitions 0/401 dead transitions. [2024-02-05 10:29:30,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 401 transitions, 6858 flow [2024-02-05 10:29:30,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:29:30,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:29:30,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 279 transitions. [2024-02-05 10:29:30,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4246575342465753 [2024-02-05 10:29:30,564 INFO L175 Difference]: Start difference. First operand has 308 places, 372 transitions, 5999 flow. Second operand 9 states and 279 transitions. [2024-02-05 10:29:30,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 401 transitions, 6858 flow [2024-02-05 10:29:30,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 401 transitions, 6727 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-02-05 10:29:30,762 INFO L231 Difference]: Finished difference. Result has 313 places, 372 transitions, 5998 flow [2024-02-05 10:29:30,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5868, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5998, PETRI_PLACES=313, PETRI_TRANSITIONS=372} [2024-02-05 10:29:30,763 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 236 predicate places. [2024-02-05 10:29:30,763 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 372 transitions, 5998 flow [2024-02-05 10:29:30,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:30,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:30,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:30,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-02-05 10:29:30,764 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:30,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:30,764 INFO L85 PathProgramCache]: Analyzing trace with hash -661853626, now seen corresponding path program 4 times [2024-02-05 10:29:30,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:30,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188496088] [2024-02-05 10:29:30,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:30,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:30,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:30,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:30,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:30,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188496088] [2024-02-05 10:29:30,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188496088] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:30,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:30,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:29:30,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61166404] [2024-02-05 10:29:30,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:30,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:29:30,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:30,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:29:30,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:29:31,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:31,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 372 transitions, 5998 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:31,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:31,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:31,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:32,041 INFO L124 PetriNetUnfolderBase]: 2438/4570 cut-off events. [2024-02-05 10:29:32,041 INFO L125 PetriNetUnfolderBase]: For 59282/59504 co-relation queries the response was YES. [2024-02-05 10:29:32,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24242 conditions, 4570 events. 2438/4570 cut-off events. For 59282/59504 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 30628 event pairs, 692 based on Foata normal form. 74/4420 useless extension candidates. Maximal degree in co-relation 24121. Up to 3557 conditions per place. [2024-02-05 10:29:32,098 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 310 selfloop transitions, 63 changer transitions 0/403 dead transitions. [2024-02-05 10:29:32,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 403 transitions, 6855 flow [2024-02-05 10:29:32,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-05 10:29:32,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-05 10:29:32,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 327 transitions. [2024-02-05 10:29:32,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40722291407222916 [2024-02-05 10:29:32,099 INFO L175 Difference]: Start difference. First operand has 313 places, 372 transitions, 5998 flow. Second operand 11 states and 327 transitions. [2024-02-05 10:29:32,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 403 transitions, 6855 flow [2024-02-05 10:29:32,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 403 transitions, 6728 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-02-05 10:29:32,304 INFO L231 Difference]: Finished difference. Result has 317 places, 372 transitions, 6002 flow [2024-02-05 10:29:32,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5871, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6002, PETRI_PLACES=317, PETRI_TRANSITIONS=372} [2024-02-05 10:29:32,305 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 240 predicate places. [2024-02-05 10:29:32,305 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 372 transitions, 6002 flow [2024-02-05 10:29:32,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:32,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:32,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:32,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-02-05 10:29:32,306 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:32,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:32,306 INFO L85 PathProgramCache]: Analyzing trace with hash -2131769834, now seen corresponding path program 1 times [2024-02-05 10:29:32,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:32,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460616257] [2024-02-05 10:29:32,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:32,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:32,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:32,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:32,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:32,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460616257] [2024-02-05 10:29:32,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460616257] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:32,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:32,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-05 10:29:32,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977222137] [2024-02-05 10:29:32,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:32,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-05 10:29:32,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:32,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-05 10:29:32,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-05 10:29:32,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:29:32,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 372 transitions, 6002 flow. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:32,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:32,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:29:32,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:33,071 INFO L124 PetriNetUnfolderBase]: 1658/3329 cut-off events. [2024-02-05 10:29:33,072 INFO L125 PetriNetUnfolderBase]: For 52886/53016 co-relation queries the response was YES. [2024-02-05 10:29:33,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18507 conditions, 3329 events. 1658/3329 cut-off events. For 52886/53016 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 23693 event pairs, 294 based on Foata normal form. 98/3186 useless extension candidates. Maximal degree in co-relation 18385. Up to 903 conditions per place. [2024-02-05 10:29:33,107 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 245 selfloop transitions, 113 changer transitions 0/400 dead transitions. [2024-02-05 10:29:33,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 400 transitions, 6982 flow [2024-02-05 10:29:33,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:29:33,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:29:33,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 186 transitions. [2024-02-05 10:29:33,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.636986301369863 [2024-02-05 10:29:33,109 INFO L175 Difference]: Start difference. First operand has 317 places, 372 transitions, 6002 flow. Second operand 4 states and 186 transitions. [2024-02-05 10:29:33,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 400 transitions, 6982 flow [2024-02-05 10:29:33,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 400 transitions, 6873 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-02-05 10:29:33,268 INFO L231 Difference]: Finished difference. Result has 313 places, 373 transitions, 6253 flow [2024-02-05 10:29:33,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5899, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=6253, PETRI_PLACES=313, PETRI_TRANSITIONS=373} [2024-02-05 10:29:33,269 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 236 predicate places. [2024-02-05 10:29:33,269 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 373 transitions, 6253 flow [2024-02-05 10:29:33,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:33,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:33,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:33,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-02-05 10:29:33,270 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:33,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:33,270 INFO L85 PathProgramCache]: Analyzing trace with hash -2127782146, now seen corresponding path program 2 times [2024-02-05 10:29:33,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:33,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110931160] [2024-02-05 10:29:33,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:33,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:33,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:33,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:33,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:33,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110931160] [2024-02-05 10:29:33,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110931160] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:33,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:33,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-05 10:29:33,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614056396] [2024-02-05 10:29:33,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:33,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-05 10:29:33,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:33,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-05 10:29:33,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-05 10:29:33,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:29:33,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 373 transitions, 6253 flow. Second operand has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:33,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:33,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:29:33,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:33,925 INFO L124 PetriNetUnfolderBase]: 1242/2433 cut-off events. [2024-02-05 10:29:33,926 INFO L125 PetriNetUnfolderBase]: For 48863/48953 co-relation queries the response was YES. [2024-02-05 10:29:33,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15346 conditions, 2433 events. 1242/2433 cut-off events. For 48863/48953 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 16524 event pairs, 276 based on Foata normal form. 98/2382 useless extension candidates. Maximal degree in co-relation 15223. Up to 941 conditions per place. [2024-02-05 10:29:33,955 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 242 selfloop transitions, 88 changer transitions 1/373 dead transitions. [2024-02-05 10:29:33,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 373 transitions, 6912 flow [2024-02-05 10:29:33,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-05 10:29:33,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-05 10:29:33,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 208 transitions. [2024-02-05 10:29:33,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5698630136986301 [2024-02-05 10:29:33,957 INFO L175 Difference]: Start difference. First operand has 313 places, 373 transitions, 6253 flow. Second operand 5 states and 208 transitions. [2024-02-05 10:29:33,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 373 transitions, 6912 flow [2024-02-05 10:29:34,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 373 transitions, 6735 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-02-05 10:29:34,132 INFO L231 Difference]: Finished difference. Result has 311 places, 361 transitions, 6266 flow [2024-02-05 10:29:34,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5987, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6266, PETRI_PLACES=311, PETRI_TRANSITIONS=361} [2024-02-05 10:29:34,133 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 234 predicate places. [2024-02-05 10:29:34,133 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 361 transitions, 6266 flow [2024-02-05 10:29:34,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:34,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:34,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:34,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-02-05 10:29:34,134 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:34,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:34,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1129089042, now seen corresponding path program 2 times [2024-02-05 10:29:34,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:34,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244334072] [2024-02-05 10:29:34,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:34,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:34,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:34,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:34,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:34,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244334072] [2024-02-05 10:29:34,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244334072] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:34,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:34,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:29:34,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069899110] [2024-02-05 10:29:34,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:34,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:29:34,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:34,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:29:34,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:29:34,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:34,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 361 transitions, 6266 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:34,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:34,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:34,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:35,090 INFO L124 PetriNetUnfolderBase]: 1943/3539 cut-off events. [2024-02-05 10:29:35,090 INFO L125 PetriNetUnfolderBase]: For 58884/59083 co-relation queries the response was YES. [2024-02-05 10:29:35,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21407 conditions, 3539 events. 1943/3539 cut-off events. For 58884/59083 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 23107 event pairs, 414 based on Foata normal form. 76/3484 useless extension candidates. Maximal degree in co-relation 21285. Up to 2945 conditions per place. [2024-02-05 10:29:35,129 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 301 selfloop transitions, 45 changer transitions 0/376 dead transitions. [2024-02-05 10:29:35,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 376 transitions, 7014 flow [2024-02-05 10:29:35,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:29:35,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:29:35,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 190 transitions. [2024-02-05 10:29:35,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4337899543378995 [2024-02-05 10:29:35,131 INFO L175 Difference]: Start difference. First operand has 311 places, 361 transitions, 6266 flow. Second operand 6 states and 190 transitions. [2024-02-05 10:29:35,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 376 transitions, 7014 flow [2024-02-05 10:29:35,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 376 transitions, 6791 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-02-05 10:29:35,433 INFO L231 Difference]: Finished difference. Result has 311 places, 362 transitions, 6149 flow [2024-02-05 10:29:35,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6044, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6149, PETRI_PLACES=311, PETRI_TRANSITIONS=362} [2024-02-05 10:29:35,433 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 234 predicate places. [2024-02-05 10:29:35,433 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 362 transitions, 6149 flow [2024-02-05 10:29:35,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:35,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:35,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:35,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-02-05 10:29:35,434 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:35,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:35,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1494792898, now seen corresponding path program 3 times [2024-02-05 10:29:35,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:35,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260109201] [2024-02-05 10:29:35,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:35,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:35,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:35,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:35,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:35,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260109201] [2024-02-05 10:29:35,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260109201] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:35,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:35,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:29:35,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304290605] [2024-02-05 10:29:35,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:35,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:29:35,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:35,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:29:35,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:29:35,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:35,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 362 transitions, 6149 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:35,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:35,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:35,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:36,391 INFO L124 PetriNetUnfolderBase]: 1943/3539 cut-off events. [2024-02-05 10:29:36,391 INFO L125 PetriNetUnfolderBase]: For 56312/56513 co-relation queries the response was YES. [2024-02-05 10:29:36,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20974 conditions, 3539 events. 1943/3539 cut-off events. For 56312/56513 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 23111 event pairs, 412 based on Foata normal form. 76/3484 useless extension candidates. Maximal degree in co-relation 20854. Up to 2947 conditions per place. [2024-02-05 10:29:36,429 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 300 selfloop transitions, 45 changer transitions 0/375 dead transitions. [2024-02-05 10:29:36,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 375 transitions, 6886 flow [2024-02-05 10:29:36,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-05 10:29:36,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-05 10:29:36,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 164 transitions. [2024-02-05 10:29:36,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44931506849315067 [2024-02-05 10:29:36,430 INFO L175 Difference]: Start difference. First operand has 311 places, 362 transitions, 6149 flow. Second operand 5 states and 164 transitions. [2024-02-05 10:29:36,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 375 transitions, 6886 flow [2024-02-05 10:29:36,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 375 transitions, 6829 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-02-05 10:29:36,698 INFO L231 Difference]: Finished difference. Result has 312 places, 363 transitions, 6205 flow [2024-02-05 10:29:36,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6093, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6205, PETRI_PLACES=312, PETRI_TRANSITIONS=363} [2024-02-05 10:29:36,699 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 235 predicate places. [2024-02-05 10:29:36,699 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 363 transitions, 6205 flow [2024-02-05 10:29:36,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:36,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:36,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:36,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-02-05 10:29:36,700 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:36,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:36,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1494829168, now seen corresponding path program 4 times [2024-02-05 10:29:36,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:36,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206120767] [2024-02-05 10:29:36,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:36,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:36,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:36,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:36,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:36,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206120767] [2024-02-05 10:29:36,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206120767] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:36,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:36,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:29:36,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769808515] [2024-02-05 10:29:36,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:36,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:29:36,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:36,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:29:36,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:29:36,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:36,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 363 transitions, 6205 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:36,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:36,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:36,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:37,623 INFO L124 PetriNetUnfolderBase]: 1976/3563 cut-off events. [2024-02-05 10:29:37,623 INFO L125 PetriNetUnfolderBase]: For 58742/58916 co-relation queries the response was YES. [2024-02-05 10:29:37,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21326 conditions, 3563 events. 1976/3563 cut-off events. For 58742/58916 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 23044 event pairs, 412 based on Foata normal form. 83/3498 useless extension candidates. Maximal degree in co-relation 21206. Up to 2983 conditions per place. [2024-02-05 10:29:37,662 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 300 selfloop transitions, 41 changer transitions 0/371 dead transitions. [2024-02-05 10:29:37,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 371 transitions, 6902 flow [2024-02-05 10:29:37,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-05 10:29:37,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-05 10:29:37,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 159 transitions. [2024-02-05 10:29:37,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43561643835616437 [2024-02-05 10:29:37,664 INFO L175 Difference]: Start difference. First operand has 312 places, 363 transitions, 6205 flow. Second operand 5 states and 159 transitions. [2024-02-05 10:29:37,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 371 transitions, 6902 flow [2024-02-05 10:29:37,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 371 transitions, 6760 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-02-05 10:29:37,950 INFO L231 Difference]: Finished difference. Result has 307 places, 362 transitions, 6133 flow [2024-02-05 10:29:37,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6051, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6133, PETRI_PLACES=307, PETRI_TRANSITIONS=362} [2024-02-05 10:29:37,951 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 230 predicate places. [2024-02-05 10:29:37,951 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 362 transitions, 6133 flow [2024-02-05 10:29:37,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:37,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:37,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:37,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-02-05 10:29:37,952 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:37,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:37,952 INFO L85 PathProgramCache]: Analyzing trace with hash -2019163812, now seen corresponding path program 5 times [2024-02-05 10:29:37,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:37,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213968342] [2024-02-05 10:29:37,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:37,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:37,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:38,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:38,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:38,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213968342] [2024-02-05 10:29:38,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213968342] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:38,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:38,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:29:38,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365055821] [2024-02-05 10:29:38,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:38,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:29:38,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:38,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:29:38,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:29:38,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:38,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 362 transitions, 6133 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:38,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:38,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:38,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:38,971 INFO L124 PetriNetUnfolderBase]: 1964/3574 cut-off events. [2024-02-05 10:29:38,972 INFO L125 PetriNetUnfolderBase]: For 56654/56852 co-relation queries the response was YES. [2024-02-05 10:29:38,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20958 conditions, 3574 events. 1964/3574 cut-off events. For 56654/56852 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 23323 event pairs, 387 based on Foata normal form. 78/3527 useless extension candidates. Maximal degree in co-relation 20843. Up to 2839 conditions per place. [2024-02-05 10:29:39,004 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 292 selfloop transitions, 70 changer transitions 0/392 dead transitions. [2024-02-05 10:29:39,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 392 transitions, 7014 flow [2024-02-05 10:29:39,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:29:39,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:29:39,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 249 transitions. [2024-02-05 10:29:39,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263698630136986 [2024-02-05 10:29:39,005 INFO L175 Difference]: Start difference. First operand has 307 places, 362 transitions, 6133 flow. Second operand 8 states and 249 transitions. [2024-02-05 10:29:39,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 392 transitions, 7014 flow [2024-02-05 10:29:39,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 392 transitions, 6887 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-02-05 10:29:39,249 INFO L231 Difference]: Finished difference. Result has 311 places, 367 transitions, 6238 flow [2024-02-05 10:29:39,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6006, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6238, PETRI_PLACES=311, PETRI_TRANSITIONS=367} [2024-02-05 10:29:39,250 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 234 predicate places. [2024-02-05 10:29:39,250 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 367 transitions, 6238 flow [2024-02-05 10:29:39,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:39,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:39,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:39,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-02-05 10:29:39,251 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:39,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:39,251 INFO L85 PathProgramCache]: Analyzing trace with hash 405277318, now seen corresponding path program 6 times [2024-02-05 10:29:39,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:39,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002847889] [2024-02-05 10:29:39,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:39,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:39,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:39,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:39,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002847889] [2024-02-05 10:29:39,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002847889] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:39,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:39,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:29:39,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204662809] [2024-02-05 10:29:39,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:39,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:29:39,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:39,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:29:39,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:29:39,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:39,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 367 transitions, 6238 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:39,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:39,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:39,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:40,197 INFO L124 PetriNetUnfolderBase]: 1963/3570 cut-off events. [2024-02-05 10:29:40,197 INFO L125 PetriNetUnfolderBase]: For 57049/57247 co-relation queries the response was YES. [2024-02-05 10:29:40,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21172 conditions, 3570 events. 1963/3570 cut-off events. For 57049/57247 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 23344 event pairs, 348 based on Foata normal form. 79/3523 useless extension candidates. Maximal degree in co-relation 21056. Up to 2319 conditions per place. [2024-02-05 10:29:40,236 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 253 selfloop transitions, 112 changer transitions 0/395 dead transitions. [2024-02-05 10:29:40,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 395 transitions, 7087 flow [2024-02-05 10:29:40,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:29:40,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:29:40,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 253 transitions. [2024-02-05 10:29:40,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4332191780821918 [2024-02-05 10:29:40,238 INFO L175 Difference]: Start difference. First operand has 311 places, 367 transitions, 6238 flow. Second operand 8 states and 253 transitions. [2024-02-05 10:29:40,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 395 transitions, 7087 flow [2024-02-05 10:29:40,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 395 transitions, 6979 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-02-05 10:29:40,518 INFO L231 Difference]: Finished difference. Result has 314 places, 367 transitions, 6367 flow [2024-02-05 10:29:40,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6132, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6367, PETRI_PLACES=314, PETRI_TRANSITIONS=367} [2024-02-05 10:29:40,519 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 237 predicate places. [2024-02-05 10:29:40,519 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 367 transitions, 6367 flow [2024-02-05 10:29:40,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:40,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:40,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:40,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-02-05 10:29:40,520 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:40,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:40,520 INFO L85 PathProgramCache]: Analyzing trace with hash -2018094312, now seen corresponding path program 7 times [2024-02-05 10:29:40,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:40,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135656668] [2024-02-05 10:29:40,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:40,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:40,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:40,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:40,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:40,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135656668] [2024-02-05 10:29:40,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135656668] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:40,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:40,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:29:40,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126859738] [2024-02-05 10:29:40,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:40,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:29:40,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:40,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:29:40,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:29:40,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:40,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 367 transitions, 6367 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:40,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:40,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:40,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:41,541 INFO L124 PetriNetUnfolderBase]: 1952/3551 cut-off events. [2024-02-05 10:29:41,542 INFO L125 PetriNetUnfolderBase]: For 59545/59748 co-relation queries the response was YES. [2024-02-05 10:29:41,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21256 conditions, 3551 events. 1952/3551 cut-off events. For 59545/59748 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 23188 event pairs, 389 based on Foata normal form. 78/3503 useless extension candidates. Maximal degree in co-relation 21140. Up to 2826 conditions per place. [2024-02-05 10:29:41,581 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 292 selfloop transitions, 72 changer transitions 0/394 dead transitions. [2024-02-05 10:29:41,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 394 transitions, 7188 flow [2024-02-05 10:29:41,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-05 10:29:41,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-05 10:29:41,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 297 transitions. [2024-02-05 10:29:41,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40684931506849314 [2024-02-05 10:29:41,583 INFO L175 Difference]: Start difference. First operand has 314 places, 367 transitions, 6367 flow. Second operand 10 states and 297 transitions. [2024-02-05 10:29:41,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 394 transitions, 7188 flow [2024-02-05 10:29:41,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 394 transitions, 6952 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-02-05 10:29:41,873 INFO L231 Difference]: Finished difference. Result has 315 places, 367 transitions, 6283 flow [2024-02-05 10:29:41,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6131, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6283, PETRI_PLACES=315, PETRI_TRANSITIONS=367} [2024-02-05 10:29:41,874 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 238 predicate places. [2024-02-05 10:29:41,874 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 367 transitions, 6283 flow [2024-02-05 10:29:41,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:41,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:41,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:41,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-02-05 10:29:41,875 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:41,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:41,875 INFO L85 PathProgramCache]: Analyzing trace with hash 129779654, now seen corresponding path program 8 times [2024-02-05 10:29:41,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:41,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658936253] [2024-02-05 10:29:41,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:41,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:42,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:42,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:42,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658936253] [2024-02-05 10:29:42,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658936253] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:42,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:42,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:29:42,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833177841] [2024-02-05 10:29:42,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:42,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:29:42,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:42,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:29:42,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:29:42,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:42,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 367 transitions, 6283 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:42,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:42,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:42,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:42,832 INFO L124 PetriNetUnfolderBase]: 1951/3550 cut-off events. [2024-02-05 10:29:42,832 INFO L125 PetriNetUnfolderBase]: For 57613/57815 co-relation queries the response was YES. [2024-02-05 10:29:42,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21081 conditions, 3550 events. 1951/3550 cut-off events. For 57613/57815 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 23226 event pairs, 336 based on Foata normal form. 79/3503 useless extension candidates. Maximal degree in co-relation 20966. Up to 2671 conditions per place. [2024-02-05 10:29:42,873 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 262 selfloop transitions, 100 changer transitions 0/392 dead transitions. [2024-02-05 10:29:42,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 392 transitions, 7112 flow [2024-02-05 10:29:42,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:29:42,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:29:42,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 226 transitions. [2024-02-05 10:29:42,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44227005870841485 [2024-02-05 10:29:42,874 INFO L175 Difference]: Start difference. First operand has 315 places, 367 transitions, 6283 flow. Second operand 7 states and 226 transitions. [2024-02-05 10:29:42,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 392 transitions, 7112 flow [2024-02-05 10:29:43,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 392 transitions, 6965 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-02-05 10:29:43,168 INFO L231 Difference]: Finished difference. Result has 314 places, 367 transitions, 6352 flow [2024-02-05 10:29:43,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6138, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6352, PETRI_PLACES=314, PETRI_TRANSITIONS=367} [2024-02-05 10:29:43,169 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 237 predicate places. [2024-02-05 10:29:43,169 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 367 transitions, 6352 flow [2024-02-05 10:29:43,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:43,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:43,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:43,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-02-05 10:29:43,169 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:43,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:43,170 INFO L85 PathProgramCache]: Analyzing trace with hash 130849154, now seen corresponding path program 9 times [2024-02-05 10:29:43,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:43,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730436379] [2024-02-05 10:29:43,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:43,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:43,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:43,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:43,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:43,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730436379] [2024-02-05 10:29:43,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730436379] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:43,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:43,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:29:43,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591092497] [2024-02-05 10:29:43,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:43,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:29:43,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:43,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:29:43,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:29:43,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:43,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 367 transitions, 6352 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:43,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:43,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:43,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:44,133 INFO L124 PetriNetUnfolderBase]: 1963/3570 cut-off events. [2024-02-05 10:29:44,134 INFO L125 PetriNetUnfolderBase]: For 59400/59602 co-relation queries the response was YES. [2024-02-05 10:29:44,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21305 conditions, 3570 events. 1963/3570 cut-off events. For 59400/59602 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 23352 event pairs, 336 based on Foata normal form. 79/3523 useless extension candidates. Maximal degree in co-relation 21190. Up to 2679 conditions per place. [2024-02-05 10:29:44,172 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 263 selfloop transitions, 106 changer transitions 0/399 dead transitions. [2024-02-05 10:29:44,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 399 transitions, 7235 flow [2024-02-05 10:29:44,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:29:44,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:29:44,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 277 transitions. [2024-02-05 10:29:44,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4216133942161339 [2024-02-05 10:29:44,173 INFO L175 Difference]: Start difference. First operand has 314 places, 367 transitions, 6352 flow. Second operand 9 states and 277 transitions. [2024-02-05 10:29:44,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 399 transitions, 7235 flow [2024-02-05 10:29:44,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 399 transitions, 7027 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-02-05 10:29:44,438 INFO L231 Difference]: Finished difference. Result has 317 places, 369 transitions, 6399 flow [2024-02-05 10:29:44,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6150, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6399, PETRI_PLACES=317, PETRI_TRANSITIONS=369} [2024-02-05 10:29:44,439 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 240 predicate places. [2024-02-05 10:29:44,439 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 369 transitions, 6399 flow [2024-02-05 10:29:44,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:44,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:44,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:44,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-02-05 10:29:44,440 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:44,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:44,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1163107304, now seen corresponding path program 10 times [2024-02-05 10:29:44,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:44,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079060811] [2024-02-05 10:29:44,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:44,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:44,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:44,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:44,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:44,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079060811] [2024-02-05 10:29:44,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079060811] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:44,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:44,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:29:44,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455252931] [2024-02-05 10:29:44,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:44,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:29:44,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:44,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:29:44,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:29:44,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:44,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 369 transitions, 6399 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:44,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:44,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:44,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:45,453 INFO L124 PetriNetUnfolderBase]: 2011/3623 cut-off events. [2024-02-05 10:29:45,453 INFO L125 PetriNetUnfolderBase]: For 62002/62171 co-relation queries the response was YES. [2024-02-05 10:29:45,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21810 conditions, 3623 events. 2011/3623 cut-off events. For 62002/62171 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 23501 event pairs, 340 based on Foata normal form. 89/3570 useless extension candidates. Maximal degree in co-relation 21694. Up to 2727 conditions per place. [2024-02-05 10:29:45,484 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 261 selfloop transitions, 111 changer transitions 0/402 dead transitions. [2024-02-05 10:29:45,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 402 transitions, 7317 flow [2024-02-05 10:29:45,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-05 10:29:45,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-05 10:29:45,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 296 transitions. [2024-02-05 10:29:45,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4054794520547945 [2024-02-05 10:29:45,485 INFO L175 Difference]: Start difference. First operand has 317 places, 369 transitions, 6399 flow. Second operand 10 states and 296 transitions. [2024-02-05 10:29:45,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 402 transitions, 7317 flow [2024-02-05 10:29:45,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 402 transitions, 7165 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-02-05 10:29:45,728 INFO L231 Difference]: Finished difference. Result has 322 places, 376 transitions, 6586 flow [2024-02-05 10:29:45,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6259, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6586, PETRI_PLACES=322, PETRI_TRANSITIONS=376} [2024-02-05 10:29:45,729 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 245 predicate places. [2024-02-05 10:29:45,729 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 376 transitions, 6586 flow [2024-02-05 10:29:45,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:45,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:45,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:45,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-02-05 10:29:45,730 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:45,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:45,730 INFO L85 PathProgramCache]: Analyzing trace with hash 948710849, now seen corresponding path program 1 times [2024-02-05 10:29:45,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:45,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591408731] [2024-02-05 10:29:45,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:45,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:45,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:45,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:45,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:45,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591408731] [2024-02-05 10:29:45,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591408731] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:45,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:45,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:29:45,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675981945] [2024-02-05 10:29:45,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:45,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:29:45,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:45,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:29:45,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:29:46,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:46,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 376 transitions, 6586 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:46,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:46,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:46,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:46,653 INFO L124 PetriNetUnfolderBase]: 1558/2928 cut-off events. [2024-02-05 10:29:46,653 INFO L125 PetriNetUnfolderBase]: For 51853/51886 co-relation queries the response was YES. [2024-02-05 10:29:46,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17791 conditions, 2928 events. 1558/2928 cut-off events. For 51853/51886 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 19321 event pairs, 323 based on Foata normal form. 4/2877 useless extension candidates. Maximal degree in co-relation 17674. Up to 2394 conditions per place. [2024-02-05 10:29:46,683 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 307 selfloop transitions, 69 changer transitions 0/397 dead transitions. [2024-02-05 10:29:46,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 397 transitions, 7447 flow [2024-02-05 10:29:46,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:29:46,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:29:46,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 245 transitions. [2024-02-05 10:29:46,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4195205479452055 [2024-02-05 10:29:46,685 INFO L175 Difference]: Start difference. First operand has 322 places, 376 transitions, 6586 flow. Second operand 8 states and 245 transitions. [2024-02-05 10:29:46,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 397 transitions, 7447 flow [2024-02-05 10:29:46,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 397 transitions, 7193 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-02-05 10:29:46,917 INFO L231 Difference]: Finished difference. Result has 321 places, 377 transitions, 6492 flow [2024-02-05 10:29:46,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6332, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6492, PETRI_PLACES=321, PETRI_TRANSITIONS=377} [2024-02-05 10:29:46,917 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 244 predicate places. [2024-02-05 10:29:46,917 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 377 transitions, 6492 flow [2024-02-05 10:29:46,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:46,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:46,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:46,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-02-05 10:29:46,918 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:46,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:46,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1106046833, now seen corresponding path program 1 times [2024-02-05 10:29:46,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:46,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553380535] [2024-02-05 10:29:46,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:46,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:46,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:47,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:47,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:47,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553380535] [2024-02-05 10:29:47,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553380535] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:47,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:47,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:29:47,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648306152] [2024-02-05 10:29:47,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:47,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:29:47,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:47,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:29:47,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:29:47,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:47,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 377 transitions, 6492 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:47,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:47,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:47,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:47,871 INFO L124 PetriNetUnfolderBase]: 1988/3629 cut-off events. [2024-02-05 10:29:47,872 INFO L125 PetriNetUnfolderBase]: For 61153/61360 co-relation queries the response was YES. [2024-02-05 10:29:47,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21636 conditions, 3629 events. 1988/3629 cut-off events. For 61153/61360 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 23919 event pairs, 415 based on Foata normal form. 76/3574 useless extension candidates. Maximal degree in co-relation 21519. Up to 2904 conditions per place. [2024-02-05 10:29:47,911 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 318 selfloop transitions, 55 changer transitions 0/403 dead transitions. [2024-02-05 10:29:47,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 403 transitions, 7352 flow [2024-02-05 10:29:47,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:29:47,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:29:47,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 245 transitions. [2024-02-05 10:29:47,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4195205479452055 [2024-02-05 10:29:47,913 INFO L175 Difference]: Start difference. First operand has 321 places, 377 transitions, 6492 flow. Second operand 8 states and 245 transitions. [2024-02-05 10:29:47,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 403 transitions, 7352 flow [2024-02-05 10:29:48,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 403 transitions, 7218 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-02-05 10:29:48,197 INFO L231 Difference]: Finished difference. Result has 323 places, 379 transitions, 6495 flow [2024-02-05 10:29:48,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6358, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6495, PETRI_PLACES=323, PETRI_TRANSITIONS=379} [2024-02-05 10:29:48,197 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 246 predicate places. [2024-02-05 10:29:48,197 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 379 transitions, 6495 flow [2024-02-05 10:29:48,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:48,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:48,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:48,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-02-05 10:29:48,198 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:48,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:48,198 INFO L85 PathProgramCache]: Analyzing trace with hash -475969707, now seen corresponding path program 2 times [2024-02-05 10:29:48,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:48,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520116255] [2024-02-05 10:29:48,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:48,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:48,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:48,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:48,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:48,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520116255] [2024-02-05 10:29:48,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520116255] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:48,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:48,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:29:48,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170447979] [2024-02-05 10:29:48,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:48,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:29:48,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:48,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:29:48,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:29:48,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:48,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 379 transitions, 6495 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:48,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:48,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:48,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:49,176 INFO L124 PetriNetUnfolderBase]: 1573/2971 cut-off events. [2024-02-05 10:29:49,176 INFO L125 PetriNetUnfolderBase]: For 50202/50238 co-relation queries the response was YES. [2024-02-05 10:29:49,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17844 conditions, 2971 events. 1573/2971 cut-off events. For 50202/50238 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 19851 event pairs, 329 based on Foata normal form. 7/2916 useless extension candidates. Maximal degree in co-relation 17726. Up to 2300 conditions per place. [2024-02-05 10:29:49,209 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 292 selfloop transitions, 95 changer transitions 0/408 dead transitions. [2024-02-05 10:29:49,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 408 transitions, 7524 flow [2024-02-05 10:29:49,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-05 10:29:49,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-05 10:29:49,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 293 transitions. [2024-02-05 10:29:49,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40136986301369865 [2024-02-05 10:29:49,210 INFO L175 Difference]: Start difference. First operand has 323 places, 379 transitions, 6495 flow. Second operand 10 states and 293 transitions. [2024-02-05 10:29:49,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 408 transitions, 7524 flow [2024-02-05 10:29:49,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 408 transitions, 7459 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-02-05 10:29:49,451 INFO L231 Difference]: Finished difference. Result has 330 places, 387 transitions, 6814 flow [2024-02-05 10:29:49,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6436, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6814, PETRI_PLACES=330, PETRI_TRANSITIONS=387} [2024-02-05 10:29:49,452 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 253 predicate places. [2024-02-05 10:29:49,452 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 387 transitions, 6814 flow [2024-02-05 10:29:49,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:49,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:49,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:49,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-02-05 10:29:49,452 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:49,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:49,453 INFO L85 PathProgramCache]: Analyzing trace with hash -550115773, now seen corresponding path program 2 times [2024-02-05 10:29:49,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:49,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141931696] [2024-02-05 10:29:49,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:49,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:49,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:49,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:49,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:49,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141931696] [2024-02-05 10:29:49,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141931696] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:49,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:49,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:29:49,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954660424] [2024-02-05 10:29:49,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:49,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:29:49,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:49,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:29:49,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:29:49,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:49,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 387 transitions, 6814 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:49,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:49,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:49,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:50,512 INFO L124 PetriNetUnfolderBase]: 2002/3674 cut-off events. [2024-02-05 10:29:50,512 INFO L125 PetriNetUnfolderBase]: For 63369/63579 co-relation queries the response was YES. [2024-02-05 10:29:50,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22174 conditions, 3674 events. 2002/3674 cut-off events. For 63369/63579 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 24448 event pairs, 423 based on Foata normal form. 79/3622 useless extension candidates. Maximal degree in co-relation 22053. Up to 2803 conditions per place. [2024-02-05 10:29:50,551 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 312 selfloop transitions, 70 changer transitions 0/412 dead transitions. [2024-02-05 10:29:50,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 412 transitions, 7696 flow [2024-02-05 10:29:50,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:29:50,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:29:50,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 220 transitions. [2024-02-05 10:29:50,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43052837573385516 [2024-02-05 10:29:50,553 INFO L175 Difference]: Start difference. First operand has 330 places, 387 transitions, 6814 flow. Second operand 7 states and 220 transitions. [2024-02-05 10:29:50,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 412 transitions, 7696 flow [2024-02-05 10:29:50,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 412 transitions, 7502 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-02-05 10:29:50,870 INFO L231 Difference]: Finished difference. Result has 329 places, 389 transitions, 6798 flow [2024-02-05 10:29:50,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6620, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6798, PETRI_PLACES=329, PETRI_TRANSITIONS=389} [2024-02-05 10:29:50,870 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 252 predicate places. [2024-02-05 10:29:50,870 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 389 transitions, 6798 flow [2024-02-05 10:29:50,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:50,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:50,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:50,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-02-05 10:29:50,871 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:50,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:50,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1346435349, now seen corresponding path program 1 times [2024-02-05 10:29:50,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:50,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321873291] [2024-02-05 10:29:50,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:50,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:50,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:51,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:51,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:51,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321873291] [2024-02-05 10:29:51,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321873291] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:51,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:51,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:29:51,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019979796] [2024-02-05 10:29:51,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:51,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:29:51,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:51,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:29:51,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:29:51,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:51,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 389 transitions, 6798 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:51,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:51,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:51,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:52,046 INFO L124 PetriNetUnfolderBase]: 1780/3349 cut-off events. [2024-02-05 10:29:52,047 INFO L125 PetriNetUnfolderBase]: For 66920/66958 co-relation queries the response was YES. [2024-02-05 10:29:52,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20501 conditions, 3349 events. 1780/3349 cut-off events. For 66920/66958 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 22658 event pairs, 382 based on Foata normal form. 29/3326 useless extension candidates. Maximal degree in co-relation 20379. Up to 1880 conditions per place. [2024-02-05 10:29:52,079 INFO L140 encePairwiseOnDemand]: 56/73 looper letters, 310 selfloop transitions, 160 changer transitions 0/491 dead transitions. [2024-02-05 10:29:52,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 491 transitions, 8623 flow [2024-02-05 10:29:52,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-05 10:29:52,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-05 10:29:52,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 399 transitions. [2024-02-05 10:29:52,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4554794520547945 [2024-02-05 10:29:52,080 INFO L175 Difference]: Start difference. First operand has 329 places, 389 transitions, 6798 flow. Second operand 12 states and 399 transitions. [2024-02-05 10:29:52,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 491 transitions, 8623 flow [2024-02-05 10:29:52,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 491 transitions, 8551 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-02-05 10:29:52,352 INFO L231 Difference]: Finished difference. Result has 339 places, 416 transitions, 7441 flow [2024-02-05 10:29:52,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6726, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7441, PETRI_PLACES=339, PETRI_TRANSITIONS=416} [2024-02-05 10:29:52,353 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 262 predicate places. [2024-02-05 10:29:52,353 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 416 transitions, 7441 flow [2024-02-05 10:29:52,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:52,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:52,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:52,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-02-05 10:29:52,354 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:52,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:52,354 INFO L85 PathProgramCache]: Analyzing trace with hash -232780721, now seen corresponding path program 3 times [2024-02-05 10:29:52,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:52,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891010804] [2024-02-05 10:29:52,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:52,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:52,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:52,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:52,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:52,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891010804] [2024-02-05 10:29:52,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891010804] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:52,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:52,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:29:52,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396149856] [2024-02-05 10:29:52,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:52,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:29:52,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:52,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:29:52,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:29:52,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:52,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 416 transitions, 7441 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:52,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:52,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:52,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:53,516 INFO L124 PetriNetUnfolderBase]: 2256/4138 cut-off events. [2024-02-05 10:29:53,516 INFO L125 PetriNetUnfolderBase]: For 82057/82273 co-relation queries the response was YES. [2024-02-05 10:29:53,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26361 conditions, 4138 events. 2256/4138 cut-off events. For 82057/82273 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 27879 event pairs, 509 based on Foata normal form. 77/4085 useless extension candidates. Maximal degree in co-relation 26236. Up to 2930 conditions per place. [2024-02-05 10:29:53,564 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 292 selfloop transitions, 114 changer transitions 0/438 dead transitions. [2024-02-05 10:29:53,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 438 transitions, 8367 flow [2024-02-05 10:29:53,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:29:53,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:29:53,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 197 transitions. [2024-02-05 10:29:53,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497716894977169 [2024-02-05 10:29:53,566 INFO L175 Difference]: Start difference. First operand has 339 places, 416 transitions, 7441 flow. Second operand 6 states and 197 transitions. [2024-02-05 10:29:53,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 438 transitions, 8367 flow [2024-02-05 10:29:53,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 438 transitions, 7983 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-02-05 10:29:53,966 INFO L231 Difference]: Finished difference. Result has 337 places, 418 transitions, 7334 flow [2024-02-05 10:29:53,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7061, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7334, PETRI_PLACES=337, PETRI_TRANSITIONS=418} [2024-02-05 10:29:53,967 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 260 predicate places. [2024-02-05 10:29:53,967 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 418 transitions, 7334 flow [2024-02-05 10:29:53,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:53,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:53,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:53,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-02-05 10:29:53,968 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:53,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:53,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1865827103, now seen corresponding path program 2 times [2024-02-05 10:29:53,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:53,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382366624] [2024-02-05 10:29:53,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:53,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:53,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:54,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:54,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:54,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382366624] [2024-02-05 10:29:54,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382366624] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:54,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:54,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:29:54,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519070410] [2024-02-05 10:29:54,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:54,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:29:54,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:54,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:29:54,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:29:54,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:54,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 418 transitions, 7334 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:54,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:54,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:54,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:55,219 INFO L124 PetriNetUnfolderBase]: 2079/3875 cut-off events. [2024-02-05 10:29:55,219 INFO L125 PetriNetUnfolderBase]: For 88382/88430 co-relation queries the response was YES. [2024-02-05 10:29:55,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24907 conditions, 3875 events. 2079/3875 cut-off events. For 88382/88430 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 26680 event pairs, 471 based on Foata normal form. 35/3866 useless extension candidates. Maximal degree in co-relation 24781. Up to 1314 conditions per place. [2024-02-05 10:29:55,260 INFO L140 encePairwiseOnDemand]: 61/73 looper letters, 357 selfloop transitions, 176 changer transitions 0/554 dead transitions. [2024-02-05 10:29:55,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 554 transitions, 9841 flow [2024-02-05 10:29:55,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-05 10:29:55,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-05 10:29:55,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 436 transitions. [2024-02-05 10:29:55,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594309799789252 [2024-02-05 10:29:55,261 INFO L175 Difference]: Start difference. First operand has 337 places, 418 transitions, 7334 flow. Second operand 13 states and 436 transitions. [2024-02-05 10:29:55,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 554 transitions, 9841 flow [2024-02-05 10:29:55,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 554 transitions, 9752 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-02-05 10:29:55,635 INFO L231 Difference]: Finished difference. Result has 347 places, 437 transitions, 7883 flow [2024-02-05 10:29:55,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7245, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7883, PETRI_PLACES=347, PETRI_TRANSITIONS=437} [2024-02-05 10:29:55,635 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 270 predicate places. [2024-02-05 10:29:55,636 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 437 transitions, 7883 flow [2024-02-05 10:29:55,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:55,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:55,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:55,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-02-05 10:29:55,636 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:55,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:55,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1118963363, now seen corresponding path program 3 times [2024-02-05 10:29:55,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:55,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598787399] [2024-02-05 10:29:55,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:55,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:55,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:55,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:55,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:55,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598787399] [2024-02-05 10:29:55,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598787399] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:55,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:55,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:29:55,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956421688] [2024-02-05 10:29:55,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:55,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:29:55,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:55,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:29:55,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:29:55,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:55,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 437 transitions, 7883 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:55,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:55,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:55,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:56,734 INFO L124 PetriNetUnfolderBase]: 2090/3908 cut-off events. [2024-02-05 10:29:56,734 INFO L125 PetriNetUnfolderBase]: For 89053/89095 co-relation queries the response was YES. [2024-02-05 10:29:56,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26050 conditions, 3908 events. 2090/3908 cut-off events. For 89053/89095 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 27101 event pairs, 457 based on Foata normal form. 5/3861 useless extension candidates. Maximal degree in co-relation 25923. Up to 2891 conditions per place. [2024-02-05 10:29:56,778 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 333 selfloop transitions, 109 changer transitions 0/463 dead transitions. [2024-02-05 10:29:56,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 463 transitions, 8887 flow [2024-02-05 10:29:56,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:29:56,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:29:56,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 248 transitions. [2024-02-05 10:29:56,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4246575342465753 [2024-02-05 10:29:56,780 INFO L175 Difference]: Start difference. First operand has 347 places, 437 transitions, 7883 flow. Second operand 8 states and 248 transitions. [2024-02-05 10:29:56,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 463 transitions, 8887 flow [2024-02-05 10:29:57,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 463 transitions, 8646 flow, removed 33 selfloop flow, removed 4 redundant places. [2024-02-05 10:29:57,191 INFO L231 Difference]: Finished difference. Result has 352 places, 441 transitions, 7954 flow [2024-02-05 10:29:57,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7642, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7954, PETRI_PLACES=352, PETRI_TRANSITIONS=441} [2024-02-05 10:29:57,191 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 275 predicate places. [2024-02-05 10:29:57,191 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 441 transitions, 7954 flow [2024-02-05 10:29:57,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:57,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:57,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:57,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-02-05 10:29:57,192 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:57,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:57,192 INFO L85 PathProgramCache]: Analyzing trace with hash 695165335, now seen corresponding path program 1 times [2024-02-05 10:29:57,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:57,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353201863] [2024-02-05 10:29:57,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:57,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:57,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:57,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:57,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:57,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353201863] [2024-02-05 10:29:57,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353201863] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:57,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:57,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:29:57,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362097993] [2024-02-05 10:29:57,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:57,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:29:57,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:57,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:29:57,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:29:57,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:29:57,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 441 transitions, 7954 flow. Second operand has 8 states, 8 states have (on average 32.625) internal successors, (261), 8 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:57,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:57,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:29:57,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:58,186 INFO L124 PetriNetUnfolderBase]: 1704/3396 cut-off events. [2024-02-05 10:29:58,186 INFO L125 PetriNetUnfolderBase]: For 88979/89083 co-relation queries the response was YES. [2024-02-05 10:29:58,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22726 conditions, 3396 events. 1704/3396 cut-off events. For 88979/89083 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 24861 event pairs, 295 based on Foata normal form. 52/3357 useless extension candidates. Maximal degree in co-relation 22596. Up to 1311 conditions per place. [2024-02-05 10:29:58,222 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 298 selfloop transitions, 161 changer transitions 2/507 dead transitions. [2024-02-05 10:29:58,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 507 transitions, 9623 flow [2024-02-05 10:29:58,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:29:58,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:29:58,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 339 transitions. [2024-02-05 10:29:58,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5804794520547946 [2024-02-05 10:29:58,223 INFO L175 Difference]: Start difference. First operand has 352 places, 441 transitions, 7954 flow. Second operand 8 states and 339 transitions. [2024-02-05 10:29:58,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 507 transitions, 9623 flow [2024-02-05 10:29:58,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 507 transitions, 9447 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-02-05 10:29:58,571 INFO L231 Difference]: Finished difference. Result has 355 places, 445 transitions, 8165 flow [2024-02-05 10:29:58,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7780, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8165, PETRI_PLACES=355, PETRI_TRANSITIONS=445} [2024-02-05 10:29:58,572 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 278 predicate places. [2024-02-05 10:29:58,572 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 445 transitions, 8165 flow [2024-02-05 10:29:58,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.625) internal successors, (261), 8 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:58,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:58,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:58,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-02-05 10:29:58,573 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:58,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:58,573 INFO L85 PathProgramCache]: Analyzing trace with hash 402494655, now seen corresponding path program 2 times [2024-02-05 10:29:58,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:58,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061776957] [2024-02-05 10:29:58,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:58,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:58,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:58,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:58,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:58,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061776957] [2024-02-05 10:29:58,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061776957] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:58,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:58,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:29:58,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727846006] [2024-02-05 10:29:58,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:58,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:29:58,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:58,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:29:58,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:29:58,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:29:58,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 445 transitions, 8165 flow. Second operand has 8 states, 8 states have (on average 32.625) internal successors, (261), 8 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:58,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:58,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:29:58,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:59,513 INFO L124 PetriNetUnfolderBase]: 1736/3460 cut-off events. [2024-02-05 10:29:59,513 INFO L125 PetriNetUnfolderBase]: For 92000/92102 co-relation queries the response was YES. [2024-02-05 10:29:59,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23570 conditions, 3460 events. 1736/3460 cut-off events. For 92000/92102 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 25426 event pairs, 295 based on Foata normal form. 40/3409 useless extension candidates. Maximal degree in co-relation 23440. Up to 1311 conditions per place. [2024-02-05 10:29:59,549 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 304 selfloop transitions, 161 changer transitions 2/513 dead transitions. [2024-02-05 10:29:59,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 513 transitions, 9908 flow [2024-02-05 10:29:59,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:29:59,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:29:59,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 343 transitions. [2024-02-05 10:29:59,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5873287671232876 [2024-02-05 10:29:59,551 INFO L175 Difference]: Start difference. First operand has 355 places, 445 transitions, 8165 flow. Second operand 8 states and 343 transitions. [2024-02-05 10:29:59,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 513 transitions, 9908 flow [2024-02-05 10:29:59,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 513 transitions, 9514 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-02-05 10:29:59,934 INFO L231 Difference]: Finished difference. Result has 358 places, 448 transitions, 8156 flow [2024-02-05 10:29:59,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7783, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8156, PETRI_PLACES=358, PETRI_TRANSITIONS=448} [2024-02-05 10:29:59,935 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 281 predicate places. [2024-02-05 10:29:59,935 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 448 transitions, 8156 flow [2024-02-05 10:29:59,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.625) internal successors, (261), 8 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:59,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:59,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:59,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-02-05 10:29:59,936 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:59,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:59,936 INFO L85 PathProgramCache]: Analyzing trace with hash 64195695, now seen corresponding path program 4 times [2024-02-05 10:29:59,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:59,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609361553] [2024-02-05 10:29:59,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:59,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:59,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:00,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:00,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:00,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609361553] [2024-02-05 10:30:00,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609361553] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:00,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:00,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:30:00,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59110759] [2024-02-05 10:30:00,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:00,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:30:00,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:00,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:30:00,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:30:00,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:30:00,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 448 transitions, 8156 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:00,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:00,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:30:00,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:01,140 INFO L124 PetriNetUnfolderBase]: 2182/4086 cut-off events. [2024-02-05 10:30:01,140 INFO L125 PetriNetUnfolderBase]: For 97611/97653 co-relation queries the response was YES. [2024-02-05 10:30:01,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26686 conditions, 4086 events. 2182/4086 cut-off events. For 97611/97653 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 28601 event pairs, 441 based on Foata normal form. 5/4039 useless extension candidates. Maximal degree in co-relation 26555. Up to 3031 conditions per place. [2024-02-05 10:30:01,184 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 330 selfloop transitions, 141 changer transitions 0/492 dead transitions. [2024-02-05 10:30:01,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 492 transitions, 9530 flow [2024-02-05 10:30:01,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:30:01,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:30:01,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 276 transitions. [2024-02-05 10:30:01,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4200913242009132 [2024-02-05 10:30:01,185 INFO L175 Difference]: Start difference. First operand has 358 places, 448 transitions, 8156 flow. Second operand 9 states and 276 transitions. [2024-02-05 10:30:01,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 492 transitions, 9530 flow [2024-02-05 10:30:01,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 492 transitions, 9235 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-05 10:30:01,640 INFO L231 Difference]: Finished difference. Result has 364 places, 468 transitions, 8535 flow [2024-02-05 10:30:01,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7865, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8535, PETRI_PLACES=364, PETRI_TRANSITIONS=468} [2024-02-05 10:30:01,641 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 287 predicate places. [2024-02-05 10:30:01,641 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 468 transitions, 8535 flow [2024-02-05 10:30:01,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:01,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:01,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:01,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-02-05 10:30:01,642 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:01,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:01,642 INFO L85 PathProgramCache]: Analyzing trace with hash 370873405, now seen corresponding path program 3 times [2024-02-05 10:30:01,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:01,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441492884] [2024-02-05 10:30:01,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:01,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:01,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:01,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:01,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:01,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441492884] [2024-02-05 10:30:01,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441492884] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:01,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:01,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:30:01,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758592008] [2024-02-05 10:30:01,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:01,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:30:01,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:01,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:30:01,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:30:01,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:30:01,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 468 transitions, 8535 flow. Second operand has 8 states, 8 states have (on average 32.625) internal successors, (261), 8 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:01,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:01,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:30:01,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:02,698 INFO L124 PetriNetUnfolderBase]: 1799/3588 cut-off events. [2024-02-05 10:30:02,698 INFO L125 PetriNetUnfolderBase]: For 94082/94173 co-relation queries the response was YES. [2024-02-05 10:30:02,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24052 conditions, 3588 events. 1799/3588 cut-off events. For 94082/94173 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 26512 event pairs, 260 based on Foata normal form. 33/3527 useless extension candidates. Maximal degree in co-relation 23919. Up to 1061 conditions per place. [2024-02-05 10:30:02,744 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 275 selfloop transitions, 207 changer transitions 2/530 dead transitions. [2024-02-05 10:30:02,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 530 transitions, 10184 flow [2024-02-05 10:30:02,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:30:02,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:30:02,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 337 transitions. [2024-02-05 10:30:02,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.577054794520548 [2024-02-05 10:30:02,745 INFO L175 Difference]: Start difference. First operand has 364 places, 468 transitions, 8535 flow. Second operand 8 states and 337 transitions. [2024-02-05 10:30:02,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 530 transitions, 10184 flow [2024-02-05 10:30:03,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 530 transitions, 9999 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-02-05 10:30:03,246 INFO L231 Difference]: Finished difference. Result has 369 places, 489 transitions, 9212 flow [2024-02-05 10:30:03,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8350, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9212, PETRI_PLACES=369, PETRI_TRANSITIONS=489} [2024-02-05 10:30:03,246 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 292 predicate places. [2024-02-05 10:30:03,246 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 489 transitions, 9212 flow [2024-02-05 10:30:03,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.625) internal successors, (261), 8 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:03,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:03,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:03,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-02-05 10:30:03,247 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:03,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:03,247 INFO L85 PathProgramCache]: Analyzing trace with hash 55604921, now seen corresponding path program 5 times [2024-02-05 10:30:03,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:03,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476992595] [2024-02-05 10:30:03,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:03,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:03,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:03,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:03,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:03,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476992595] [2024-02-05 10:30:03,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476992595] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:03,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:03,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:30:03,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721146951] [2024-02-05 10:30:03,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:03,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:30:03,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:03,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:30:03,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:30:03,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:30:03,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 489 transitions, 9212 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:03,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:03,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:30:03,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:04,491 INFO L124 PetriNetUnfolderBase]: 2208/4136 cut-off events. [2024-02-05 10:30:04,491 INFO L125 PetriNetUnfolderBase]: For 104410/104452 co-relation queries the response was YES. [2024-02-05 10:30:04,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28118 conditions, 4136 events. 2208/4136 cut-off events. For 104410/104452 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 28985 event pairs, 423 based on Foata normal form. 5/4089 useless extension candidates. Maximal degree in co-relation 27983. Up to 3077 conditions per place. [2024-02-05 10:30:04,531 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 352 selfloop transitions, 139 changer transitions 0/512 dead transitions. [2024-02-05 10:30:04,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 512 transitions, 10264 flow [2024-02-05 10:30:04,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:30:04,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:30:04,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 247 transitions. [2024-02-05 10:30:04,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229452054794521 [2024-02-05 10:30:04,533 INFO L175 Difference]: Start difference. First operand has 369 places, 489 transitions, 9212 flow. Second operand 8 states and 247 transitions. [2024-02-05 10:30:04,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 512 transitions, 10264 flow [2024-02-05 10:30:05,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 512 transitions, 9880 flow, removed 13 selfloop flow, removed 13 redundant places. [2024-02-05 10:30:05,037 INFO L231 Difference]: Finished difference. Result has 363 places, 490 transitions, 9149 flow [2024-02-05 10:30:05,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8801, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9149, PETRI_PLACES=363, PETRI_TRANSITIONS=490} [2024-02-05 10:30:05,038 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 286 predicate places. [2024-02-05 10:30:05,038 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 490 transitions, 9149 flow [2024-02-05 10:30:05,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:05,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:05,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:05,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-02-05 10:30:05,039 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:05,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:05,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1786556527, now seen corresponding path program 4 times [2024-02-05 10:30:05,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:05,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231660605] [2024-02-05 10:30:05,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:05,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:05,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:05,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:05,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231660605] [2024-02-05 10:30:05,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231660605] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:05,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:05,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:30:05,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107711254] [2024-02-05 10:30:05,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:05,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:30:05,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:05,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:30:05,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:30:05,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:30:05,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 490 transitions, 9149 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:05,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:05,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:30:05,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:06,077 INFO L124 PetriNetUnfolderBase]: 1811/3635 cut-off events. [2024-02-05 10:30:06,078 INFO L125 PetriNetUnfolderBase]: For 102386/102477 co-relation queries the response was YES. [2024-02-05 10:30:06,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24740 conditions, 3635 events. 1811/3635 cut-off events. For 102386/102477 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 27115 event pairs, 355 based on Foata normal form. 45/3583 useless extension candidates. Maximal degree in co-relation 24613. Up to 2085 conditions per place. [2024-02-05 10:30:06,120 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 341 selfloop transitions, 150 changer transitions 0/538 dead transitions. [2024-02-05 10:30:06,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 538 transitions, 10636 flow [2024-02-05 10:30:06,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:30:06,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:30:06,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 375 transitions. [2024-02-05 10:30:06,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5707762557077626 [2024-02-05 10:30:06,122 INFO L175 Difference]: Start difference. First operand has 363 places, 490 transitions, 9149 flow. Second operand 9 states and 375 transitions. [2024-02-05 10:30:06,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 538 transitions, 10636 flow [2024-02-05 10:30:06,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 538 transitions, 10362 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-02-05 10:30:06,554 INFO L231 Difference]: Finished difference. Result has 367 places, 492 transitions, 9215 flow [2024-02-05 10:30:06,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8875, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9215, PETRI_PLACES=367, PETRI_TRANSITIONS=492} [2024-02-05 10:30:06,555 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 290 predicate places. [2024-02-05 10:30:06,555 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 492 transitions, 9215 flow [2024-02-05 10:30:06,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:06,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:06,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:06,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-02-05 10:30:06,555 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:06,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:06,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1682668039, now seen corresponding path program 5 times [2024-02-05 10:30:06,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:06,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901764434] [2024-02-05 10:30:06,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:06,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:06,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:06,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:06,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:06,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901764434] [2024-02-05 10:30:06,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901764434] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:06,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:06,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:30:06,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006816623] [2024-02-05 10:30:06,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:06,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:30:06,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:06,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:30:06,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:30:06,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:30:06,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 492 transitions, 9215 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:06,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:06,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:30:06,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:07,661 INFO L124 PetriNetUnfolderBase]: 1807/3629 cut-off events. [2024-02-05 10:30:07,661 INFO L125 PetriNetUnfolderBase]: For 98495/98582 co-relation queries the response was YES. [2024-02-05 10:30:07,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24720 conditions, 3629 events. 1807/3629 cut-off events. For 98495/98582 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 27032 event pairs, 349 based on Foata normal form. 33/3566 useless extension candidates. Maximal degree in co-relation 24592. Up to 2089 conditions per place. [2024-02-05 10:30:07,696 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 333 selfloop transitions, 155 changer transitions 0/535 dead transitions. [2024-02-05 10:30:07,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 535 transitions, 10603 flow [2024-02-05 10:30:07,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:30:07,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:30:07,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 373 transitions. [2024-02-05 10:30:07,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5677321156773212 [2024-02-05 10:30:07,698 INFO L175 Difference]: Start difference. First operand has 367 places, 492 transitions, 9215 flow. Second operand 9 states and 373 transitions. [2024-02-05 10:30:07,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 535 transitions, 10603 flow [2024-02-05 10:30:08,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 535 transitions, 10223 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-02-05 10:30:08,100 INFO L231 Difference]: Finished difference. Result has 368 places, 493 transitions, 9165 flow [2024-02-05 10:30:08,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8839, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9165, PETRI_PLACES=368, PETRI_TRANSITIONS=493} [2024-02-05 10:30:08,101 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 291 predicate places. [2024-02-05 10:30:08,101 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 493 transitions, 9165 flow [2024-02-05 10:30:08,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:08,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:08,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:08,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-02-05 10:30:08,101 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:08,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:08,102 INFO L85 PathProgramCache]: Analyzing trace with hash 964292895, now seen corresponding path program 4 times [2024-02-05 10:30:08,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:08,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516890362] [2024-02-05 10:30:08,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:08,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:08,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:08,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:08,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:08,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516890362] [2024-02-05 10:30:08,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516890362] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:08,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:08,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:30:08,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954801504] [2024-02-05 10:30:08,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:08,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:30:08,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:08,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:30:08,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:30:08,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:30:08,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 493 transitions, 9165 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:08,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:08,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:30:08,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:09,452 INFO L124 PetriNetUnfolderBase]: 2696/4948 cut-off events. [2024-02-05 10:30:09,452 INFO L125 PetriNetUnfolderBase]: For 118532/118749 co-relation queries the response was YES. [2024-02-05 10:30:09,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32123 conditions, 4948 events. 2696/4948 cut-off events. For 118532/118749 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 34484 event pairs, 667 based on Foata normal form. 59/4861 useless extension candidates. Maximal degree in co-relation 31995. Up to 3512 conditions per place. [2024-02-05 10:30:09,513 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 371 selfloop transitions, 112 changer transitions 0/517 dead transitions. [2024-02-05 10:30:09,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 517 transitions, 10232 flow [2024-02-05 10:30:09,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:30:09,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:30:09,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 246 transitions. [2024-02-05 10:30:09,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212328767123288 [2024-02-05 10:30:09,514 INFO L175 Difference]: Start difference. First operand has 368 places, 493 transitions, 9165 flow. Second operand 8 states and 246 transitions. [2024-02-05 10:30:09,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 517 transitions, 10232 flow [2024-02-05 10:30:10,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 517 transitions, 9965 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-02-05 10:30:10,173 INFO L231 Difference]: Finished difference. Result has 371 places, 494 transitions, 9139 flow [2024-02-05 10:30:10,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8900, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9139, PETRI_PLACES=371, PETRI_TRANSITIONS=494} [2024-02-05 10:30:10,173 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 294 predicate places. [2024-02-05 10:30:10,174 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 494 transitions, 9139 flow [2024-02-05 10:30:10,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:10,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:10,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:10,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-02-05 10:30:10,174 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:10,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:10,175 INFO L85 PathProgramCache]: Analyzing trace with hash 995211323, now seen corresponding path program 1 times [2024-02-05 10:30:10,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:10,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892157584] [2024-02-05 10:30:10,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:10,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:10,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:10,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:10,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:10,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892157584] [2024-02-05 10:30:10,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892157584] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:10,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:10,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:30:10,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337266494] [2024-02-05 10:30:10,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:10,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:30:10,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:10,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:30:10,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:30:10,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:30:10,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 494 transitions, 9139 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:10,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:10,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:30:10,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:11,281 INFO L124 PetriNetUnfolderBase]: 1805/3627 cut-off events. [2024-02-05 10:30:11,281 INFO L125 PetriNetUnfolderBase]: For 97413/97500 co-relation queries the response was YES. [2024-02-05 10:30:11,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24301 conditions, 3627 events. 1805/3627 cut-off events. For 97413/97500 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 26960 event pairs, 339 based on Foata normal form. 33/3564 useless extension candidates. Maximal degree in co-relation 24172. Up to 2097 conditions per place. [2024-02-05 10:30:11,317 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 334 selfloop transitions, 160 changer transitions 0/541 dead transitions. [2024-02-05 10:30:11,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 541 transitions, 10488 flow [2024-02-05 10:30:11,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-05 10:30:11,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-05 10:30:11,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 475 transitions. [2024-02-05 10:30:11,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5422374429223744 [2024-02-05 10:30:11,318 INFO L175 Difference]: Start difference. First operand has 371 places, 494 transitions, 9139 flow. Second operand 12 states and 475 transitions. [2024-02-05 10:30:11,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 541 transitions, 10488 flow [2024-02-05 10:30:11,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 541 transitions, 10351 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-02-05 10:30:11,748 INFO L231 Difference]: Finished difference. Result has 378 places, 495 transitions, 9337 flow [2024-02-05 10:30:11,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9002, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9337, PETRI_PLACES=378, PETRI_TRANSITIONS=495} [2024-02-05 10:30:11,748 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 301 predicate places. [2024-02-05 10:30:11,748 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 495 transitions, 9337 flow [2024-02-05 10:30:11,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:11,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:11,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:11,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-02-05 10:30:11,749 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:11,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:11,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1497782991, now seen corresponding path program 5 times [2024-02-05 10:30:11,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:11,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993198679] [2024-02-05 10:30:11,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:11,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:11,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:12,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:12,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:12,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993198679] [2024-02-05 10:30:12,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993198679] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:12,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:12,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:30:12,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340260595] [2024-02-05 10:30:12,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:12,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:30:12,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:12,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:30:12,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:30:12,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:30:12,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 495 transitions, 9337 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:12,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:12,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:30:12,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:13,118 INFO L124 PetriNetUnfolderBase]: 2689/4942 cut-off events. [2024-02-05 10:30:13,119 INFO L125 PetriNetUnfolderBase]: For 120306/120524 co-relation queries the response was YES. [2024-02-05 10:30:13,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32058 conditions, 4942 events. 2689/4942 cut-off events. For 120306/120524 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 34438 event pairs, 656 based on Foata normal form. 59/4856 useless extension candidates. Maximal degree in co-relation 31928. Up to 3498 conditions per place. [2024-02-05 10:30:13,180 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 380 selfloop transitions, 115 changer transitions 0/529 dead transitions. [2024-02-05 10:30:13,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 529 transitions, 10492 flow [2024-02-05 10:30:13,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:30:13,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:30:13,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 281 transitions. [2024-02-05 10:30:13,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4277016742770167 [2024-02-05 10:30:13,182 INFO L175 Difference]: Start difference. First operand has 378 places, 495 transitions, 9337 flow. Second operand 9 states and 281 transitions. [2024-02-05 10:30:13,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 529 transitions, 10492 flow [2024-02-05 10:30:13,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 529 transitions, 10202 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-02-05 10:30:13,841 INFO L231 Difference]: Finished difference. Result has 379 places, 496 transitions, 9295 flow [2024-02-05 10:30:13,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9049, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9295, PETRI_PLACES=379, PETRI_TRANSITIONS=496} [2024-02-05 10:30:13,841 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 302 predicate places. [2024-02-05 10:30:13,841 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 496 transitions, 9295 flow [2024-02-05 10:30:13,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:13,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:13,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:13,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-02-05 10:30:13,842 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:13,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:13,842 INFO L85 PathProgramCache]: Analyzing trace with hash -752234971, now seen corresponding path program 6 times [2024-02-05 10:30:13,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:13,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188858509] [2024-02-05 10:30:13,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:13,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:13,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:14,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:14,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:14,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188858509] [2024-02-05 10:30:14,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188858509] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:14,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:14,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:30:14,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914310104] [2024-02-05 10:30:14,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:14,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:30:14,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:14,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:30:14,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:30:14,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:30:14,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 496 transitions, 9295 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:14,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:14,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:30:14,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:15,294 INFO L124 PetriNetUnfolderBase]: 2679/4918 cut-off events. [2024-02-05 10:30:15,294 INFO L125 PetriNetUnfolderBase]: For 119816/120050 co-relation queries the response was YES. [2024-02-05 10:30:15,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31767 conditions, 4918 events. 2679/4918 cut-off events. For 119816/120050 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 34244 event pairs, 734 based on Foata normal form. 59/4826 useless extension candidates. Maximal degree in co-relation 31636. Up to 4130 conditions per place. [2024-02-05 10:30:15,355 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 420 selfloop transitions, 72 changer transitions 0/526 dead transitions. [2024-02-05 10:30:15,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 526 transitions, 10402 flow [2024-02-05 10:30:15,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-05 10:30:15,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-05 10:30:15,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 321 transitions. [2024-02-05 10:30:15,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39975093399750933 [2024-02-05 10:30:15,357 INFO L175 Difference]: Start difference. First operand has 379 places, 496 transitions, 9295 flow. Second operand 11 states and 321 transitions. [2024-02-05 10:30:15,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 526 transitions, 10402 flow [2024-02-05 10:30:15,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 526 transitions, 10265 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-02-05 10:30:15,961 INFO L231 Difference]: Finished difference. Result has 385 places, 496 transitions, 9309 flow [2024-02-05 10:30:15,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9158, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9309, PETRI_PLACES=385, PETRI_TRANSITIONS=496} [2024-02-05 10:30:15,962 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 308 predicate places. [2024-02-05 10:30:15,962 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 496 transitions, 9309 flow [2024-02-05 10:30:15,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:15,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:15,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:15,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-02-05 10:30:15,963 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:15,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:15,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1206842629, now seen corresponding path program 6 times [2024-02-05 10:30:15,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:15,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70947274] [2024-02-05 10:30:15,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:15,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:15,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:16,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:16,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:16,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70947274] [2024-02-05 10:30:16,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70947274] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:16,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:16,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:30:16,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663017353] [2024-02-05 10:30:16,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:16,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:30:16,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:16,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:30:16,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:30:16,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:30:16,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 496 transitions, 9309 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:16,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:16,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:30:16,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:17,025 INFO L124 PetriNetUnfolderBase]: 1813/3634 cut-off events. [2024-02-05 10:30:17,026 INFO L125 PetriNetUnfolderBase]: For 102411/102498 co-relation queries the response was YES. [2024-02-05 10:30:17,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24231 conditions, 3634 events. 1813/3634 cut-off events. For 102411/102498 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 26994 event pairs, 247 based on Foata normal form. 45/3584 useless extension candidates. Maximal degree in co-relation 24099. Up to 1114 conditions per place. [2024-02-05 10:30:17,072 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 294 selfloop transitions, 202 changer transitions 0/543 dead transitions. [2024-02-05 10:30:17,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 543 transitions, 10808 flow [2024-02-05 10:30:17,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:30:17,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:30:17,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 339 transitions. [2024-02-05 10:30:17,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5804794520547946 [2024-02-05 10:30:17,074 INFO L175 Difference]: Start difference. First operand has 385 places, 496 transitions, 9309 flow. Second operand 8 states and 339 transitions. [2024-02-05 10:30:17,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 543 transitions, 10808 flow [2024-02-05 10:30:17,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 543 transitions, 10650 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-02-05 10:30:17,607 INFO L231 Difference]: Finished difference. Result has 384 places, 498 transitions, 9623 flow [2024-02-05 10:30:17,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9153, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9623, PETRI_PLACES=384, PETRI_TRANSITIONS=498} [2024-02-05 10:30:17,608 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 307 predicate places. [2024-02-05 10:30:17,608 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 498 transitions, 9623 flow [2024-02-05 10:30:17,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:17,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:17,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:17,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-02-05 10:30:17,609 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:17,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:17,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1490752839, now seen corresponding path program 7 times [2024-02-05 10:30:17,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:17,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824345494] [2024-02-05 10:30:17,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:17,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:17,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:17,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:17,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:17,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824345494] [2024-02-05 10:30:17,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824345494] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:17,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:17,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:30:17,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633004280] [2024-02-05 10:30:17,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:17,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:30:17,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:17,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:30:17,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:30:17,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:30:17,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 498 transitions, 9623 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:17,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:17,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:30:17,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:18,675 INFO L124 PetriNetUnfolderBase]: 1810/3632 cut-off events. [2024-02-05 10:30:18,675 INFO L125 PetriNetUnfolderBase]: For 100343/100424 co-relation queries the response was YES. [2024-02-05 10:30:18,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24691 conditions, 3632 events. 1810/3632 cut-off events. For 100343/100424 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 26933 event pairs, 243 based on Foata normal form. 33/3571 useless extension candidates. Maximal degree in co-relation 24557. Up to 1118 conditions per place. [2024-02-05 10:30:18,724 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 261 selfloop transitions, 233 changer transitions 0/541 dead transitions. [2024-02-05 10:30:18,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 541 transitions, 11031 flow [2024-02-05 10:30:18,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:30:18,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:30:18,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 339 transitions. [2024-02-05 10:30:18,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5804794520547946 [2024-02-05 10:30:18,726 INFO L175 Difference]: Start difference. First operand has 384 places, 498 transitions, 9623 flow. Second operand 8 states and 339 transitions. [2024-02-05 10:30:18,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 541 transitions, 11031 flow [2024-02-05 10:30:19,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 541 transitions, 10644 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-02-05 10:30:19,203 INFO L231 Difference]: Finished difference. Result has 386 places, 499 transitions, 9729 flow [2024-02-05 10:30:19,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9241, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=232, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9729, PETRI_PLACES=386, PETRI_TRANSITIONS=499} [2024-02-05 10:30:19,204 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 309 predicate places. [2024-02-05 10:30:19,204 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 499 transitions, 9729 flow [2024-02-05 10:30:19,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:19,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:19,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:19,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-02-05 10:30:19,204 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:19,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:19,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1510305879, now seen corresponding path program 8 times [2024-02-05 10:30:19,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:19,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660129346] [2024-02-05 10:30:19,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:19,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:19,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:19,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:19,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:19,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660129346] [2024-02-05 10:30:19,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660129346] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:19,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:19,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:30:19,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597440459] [2024-02-05 10:30:19,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:19,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:30:19,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:19,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:30:19,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:30:19,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:30:19,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 499 transitions, 9729 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:19,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:19,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:30:19,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:20,288 INFO L124 PetriNetUnfolderBase]: 1768/3573 cut-off events. [2024-02-05 10:30:20,288 INFO L125 PetriNetUnfolderBase]: For 97866/97951 co-relation queries the response was YES. [2024-02-05 10:30:20,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23913 conditions, 3573 events. 1768/3573 cut-off events. For 97866/97951 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 26612 event pairs, 289 based on Foata normal form. 52/3539 useless extension candidates. Maximal degree in co-relation 23779. Up to 2144 conditions per place. [2024-02-05 10:30:20,332 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 319 selfloop transitions, 169 changer transitions 0/535 dead transitions. [2024-02-05 10:30:20,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 535 transitions, 11044 flow [2024-02-05 10:30:20,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:30:20,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:30:20,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 300 transitions. [2024-02-05 10:30:20,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5870841487279843 [2024-02-05 10:30:20,334 INFO L175 Difference]: Start difference. First operand has 386 places, 499 transitions, 9729 flow. Second operand 7 states and 300 transitions. [2024-02-05 10:30:20,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 535 transitions, 11044 flow [2024-02-05 10:30:20,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 535 transitions, 10842 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-02-05 10:30:20,743 INFO L231 Difference]: Finished difference. Result has 389 places, 499 transitions, 9910 flow [2024-02-05 10:30:20,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9529, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9910, PETRI_PLACES=389, PETRI_TRANSITIONS=499} [2024-02-05 10:30:20,744 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 312 predicate places. [2024-02-05 10:30:20,744 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 499 transitions, 9910 flow [2024-02-05 10:30:20,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:20,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:20,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:20,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-02-05 10:30:20,744 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:20,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:20,745 INFO L85 PathProgramCache]: Analyzing trace with hash 451528423, now seen corresponding path program 2 times [2024-02-05 10:30:20,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:20,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627646331] [2024-02-05 10:30:20,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:20,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:20,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:20,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:20,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:20,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627646331] [2024-02-05 10:30:20,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627646331] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:20,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:20,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:30:20,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368467818] [2024-02-05 10:30:20,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:20,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:30:20,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:20,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:30:20,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:30:20,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:30:20,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 499 transitions, 9910 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:20,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:20,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:30:20,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:21,863 INFO L124 PetriNetUnfolderBase]: 1774/3597 cut-off events. [2024-02-05 10:30:21,863 INFO L125 PetriNetUnfolderBase]: For 91340/91422 co-relation queries the response was YES. [2024-02-05 10:30:21,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23893 conditions, 3597 events. 1774/3597 cut-off events. For 91340/91422 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 26815 event pairs, 212 based on Foata normal form. 38/3551 useless extension candidates. Maximal degree in co-relation 23759. Up to 1120 conditions per place. [2024-02-05 10:30:21,906 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 283 selfloop transitions, 225 changer transitions 0/555 dead transitions. [2024-02-05 10:30:21,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 555 transitions, 11424 flow [2024-02-05 10:30:21,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-05 10:30:21,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-05 10:30:21,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 448 transitions. [2024-02-05 10:30:21,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5579078455790785 [2024-02-05 10:30:21,907 INFO L175 Difference]: Start difference. First operand has 389 places, 499 transitions, 9910 flow. Second operand 11 states and 448 transitions. [2024-02-05 10:30:21,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 555 transitions, 11424 flow [2024-02-05 10:30:22,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 555 transitions, 11164 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-02-05 10:30:22,287 INFO L231 Difference]: Finished difference. Result has 394 places, 500 transitions, 10119 flow [2024-02-05 10:30:22,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9650, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10119, PETRI_PLACES=394, PETRI_TRANSITIONS=500} [2024-02-05 10:30:22,288 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 317 predicate places. [2024-02-05 10:30:22,288 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 500 transitions, 10119 flow [2024-02-05 10:30:22,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:22,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:22,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:22,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-02-05 10:30:22,289 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:22,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:22,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1147552583, now seen corresponding path program 3 times [2024-02-05 10:30:22,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:22,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255722304] [2024-02-05 10:30:22,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:22,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:22,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:22,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:22,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:22,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255722304] [2024-02-05 10:30:22,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255722304] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:22,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:22,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:30:22,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859108848] [2024-02-05 10:30:22,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:22,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:30:22,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:22,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:30:22,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:30:22,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:30:22,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 500 transitions, 10119 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:22,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:22,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:30:22,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:23,384 INFO L124 PetriNetUnfolderBase]: 1796/3626 cut-off events. [2024-02-05 10:30:23,385 INFO L125 PetriNetUnfolderBase]: For 94330/94415 co-relation queries the response was YES. [2024-02-05 10:30:23,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24525 conditions, 3626 events. 1796/3626 cut-off events. For 94330/94415 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 27068 event pairs, 281 based on Foata normal form. 39/3578 useless extension candidates. Maximal degree in co-relation 24392. Up to 2148 conditions per place. [2024-02-05 10:30:23,433 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 336 selfloop transitions, 156 changer transitions 0/539 dead transitions. [2024-02-05 10:30:23,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 539 transitions, 11446 flow [2024-02-05 10:30:23,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:30:23,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:30:23,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 299 transitions. [2024-02-05 10:30:23,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5851272015655578 [2024-02-05 10:30:23,435 INFO L175 Difference]: Start difference. First operand has 394 places, 500 transitions, 10119 flow. Second operand 7 states and 299 transitions. [2024-02-05 10:30:23,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 539 transitions, 11446 flow [2024-02-05 10:30:23,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 539 transitions, 11068 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-02-05 10:30:23,837 INFO L231 Difference]: Finished difference. Result has 394 places, 503 transitions, 10196 flow [2024-02-05 10:30:23,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9745, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10196, PETRI_PLACES=394, PETRI_TRANSITIONS=503} [2024-02-05 10:30:23,838 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 317 predicate places. [2024-02-05 10:30:23,838 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 503 transitions, 10196 flow [2024-02-05 10:30:23,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:23,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:23,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:23,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-02-05 10:30:23,839 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:23,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:23,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1451521879, now seen corresponding path program 4 times [2024-02-05 10:30:23,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:23,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363212631] [2024-02-05 10:30:23,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:23,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:23,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:24,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:24,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:24,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363212631] [2024-02-05 10:30:24,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363212631] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:24,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:24,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:30:24,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535241215] [2024-02-05 10:30:24,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:24,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:30:24,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:24,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:30:24,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:30:24,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:30:24,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 503 transitions, 10196 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:24,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:24,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:30:24,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:25,015 INFO L124 PetriNetUnfolderBase]: 1792/3618 cut-off events. [2024-02-05 10:30:25,015 INFO L125 PetriNetUnfolderBase]: For 90034/90118 co-relation queries the response was YES. [2024-02-05 10:30:25,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24363 conditions, 3618 events. 1792/3618 cut-off events. For 90034/90118 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 26946 event pairs, 279 based on Foata normal form. 39/3570 useless extension candidates. Maximal degree in co-relation 24229. Up to 2152 conditions per place. [2024-02-05 10:30:25,059 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 328 selfloop transitions, 163 changer transitions 0/538 dead transitions. [2024-02-05 10:30:25,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 538 transitions, 11398 flow [2024-02-05 10:30:25,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:30:25,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:30:25,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 364 transitions. [2024-02-05 10:30:25,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5540334855403348 [2024-02-05 10:30:25,060 INFO L175 Difference]: Start difference. First operand has 394 places, 503 transitions, 10196 flow. Second operand 9 states and 364 transitions. [2024-02-05 10:30:25,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 538 transitions, 11398 flow [2024-02-05 10:30:25,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 538 transitions, 10845 flow, removed 3 selfloop flow, removed 24 redundant places. [2024-02-05 10:30:25,383 INFO L231 Difference]: Finished difference. Result has 377 places, 503 transitions, 9922 flow [2024-02-05 10:30:25,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9585, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9922, PETRI_PLACES=377, PETRI_TRANSITIONS=503} [2024-02-05 10:30:25,383 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 300 predicate places. [2024-02-05 10:30:25,384 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 503 transitions, 9922 flow [2024-02-05 10:30:25,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:25,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:25,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:25,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-02-05 10:30:25,384 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:25,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:25,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1839109195, now seen corresponding path program 3 times [2024-02-05 10:30:25,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:25,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612007447] [2024-02-05 10:30:25,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:25,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:25,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:25,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:25,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612007447] [2024-02-05 10:30:25,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612007447] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:25,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:25,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:30:25,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886643968] [2024-02-05 10:30:25,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:25,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:30:25,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:25,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:30:25,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:30:25,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:30:25,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 503 transitions, 9922 flow. Second operand has 9 states, 9 states have (on average 22.77777777777778) internal successors, (205), 9 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:25,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:25,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:30:25,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:26,601 INFO L124 PetriNetUnfolderBase]: 2307/4312 cut-off events. [2024-02-05 10:30:26,602 INFO L125 PetriNetUnfolderBase]: For 87550/87592 co-relation queries the response was YES. [2024-02-05 10:30:26,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27219 conditions, 4312 events. 2307/4312 cut-off events. For 87550/87592 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 30158 event pairs, 160 based on Foata normal form. 9/4269 useless extension candidates. Maximal degree in co-relation 27106. Up to 1438 conditions per place. [2024-02-05 10:30:26,649 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 356 selfloop transitions, 214 changer transitions 2/593 dead transitions. [2024-02-05 10:30:26,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 593 transitions, 11912 flow [2024-02-05 10:30:26,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:30:26,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:30:26,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 317 transitions. [2024-02-05 10:30:26,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824961948249619 [2024-02-05 10:30:26,651 INFO L175 Difference]: Start difference. First operand has 377 places, 503 transitions, 9922 flow. Second operand 9 states and 317 transitions. [2024-02-05 10:30:26,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 593 transitions, 11912 flow [2024-02-05 10:30:27,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 593 transitions, 11513 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-02-05 10:30:27,014 INFO L231 Difference]: Finished difference. Result has 381 places, 525 transitions, 10291 flow [2024-02-05 10:30:27,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9544, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10291, PETRI_PLACES=381, PETRI_TRANSITIONS=525} [2024-02-05 10:30:27,014 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 304 predicate places. [2024-02-05 10:30:27,015 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 525 transitions, 10291 flow [2024-02-05 10:30:27,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.77777777777778) internal successors, (205), 9 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:27,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:27,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:27,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-02-05 10:30:27,015 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:27,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:27,016 INFO L85 PathProgramCache]: Analyzing trace with hash -738967817, now seen corresponding path program 4 times [2024-02-05 10:30:27,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:27,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335014183] [2024-02-05 10:30:27,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:27,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:27,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:27,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:27,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:27,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335014183] [2024-02-05 10:30:27,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335014183] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:27,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:27,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:30:27,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911665745] [2024-02-05 10:30:27,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:27,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:30:27,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:27,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:30:27,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:30:27,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:30:27,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 525 transitions, 10291 flow. Second operand has 9 states, 9 states have (on average 22.77777777777778) internal successors, (205), 9 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:27,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:27,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:30:27,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:28,247 INFO L124 PetriNetUnfolderBase]: 2295/4292 cut-off events. [2024-02-05 10:30:28,247 INFO L125 PetriNetUnfolderBase]: For 94083/94137 co-relation queries the response was YES. [2024-02-05 10:30:28,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28449 conditions, 4292 events. 2295/4292 cut-off events. For 94083/94137 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 30031 event pairs, 160 based on Foata normal form. 9/4249 useless extension candidates. Maximal degree in co-relation 28334. Up to 1434 conditions per place. [2024-02-05 10:30:28,295 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 362 selfloop transitions, 211 changer transitions 2/596 dead transitions. [2024-02-05 10:30:28,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 596 transitions, 12141 flow [2024-02-05 10:30:28,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:30:28,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:30:28,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 322 transitions. [2024-02-05 10:30:28,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4901065449010654 [2024-02-05 10:30:28,297 INFO L175 Difference]: Start difference. First operand has 381 places, 525 transitions, 10291 flow. Second operand 9 states and 322 transitions. [2024-02-05 10:30:28,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 596 transitions, 12141 flow [2024-02-05 10:30:28,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 596 transitions, 11849 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-02-05 10:30:28,656 INFO L231 Difference]: Finished difference. Result has 384 places, 525 transitions, 10429 flow [2024-02-05 10:30:28,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9999, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10429, PETRI_PLACES=384, PETRI_TRANSITIONS=525} [2024-02-05 10:30:28,656 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 307 predicate places. [2024-02-05 10:30:28,656 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 525 transitions, 10429 flow [2024-02-05 10:30:28,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.77777777777778) internal successors, (205), 9 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:28,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:28,657 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] [2024-02-05 10:30:28,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-02-05 10:30:28,657 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:28,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:28,657 INFO L85 PathProgramCache]: Analyzing trace with hash 2107558711, now seen corresponding path program 5 times [2024-02-05 10:30:28,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:28,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537524552] [2024-02-05 10:30:28,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:28,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:28,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:28,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:28,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:28,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537524552] [2024-02-05 10:30:28,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537524552] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:28,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:28,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:30:28,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500453615] [2024-02-05 10:30:28,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:28,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:30:28,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:28,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:30:28,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:30:28,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:30:28,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 525 transitions, 10429 flow. Second operand has 9 states, 9 states have (on average 22.77777777777778) internal successors, (205), 9 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:28,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:28,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:30:28,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:29,919 INFO L124 PetriNetUnfolderBase]: 2473/4602 cut-off events. [2024-02-05 10:30:29,919 INFO L125 PetriNetUnfolderBase]: For 102317/102371 co-relation queries the response was YES. [2024-02-05 10:30:29,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30350 conditions, 4602 events. 2473/4602 cut-off events. For 102317/102371 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 32394 event pairs, 163 based on Foata normal form. 9/4559 useless extension candidates. Maximal degree in co-relation 30234. Up to 1500 conditions per place. [2024-02-05 10:30:29,973 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 331 selfloop transitions, 251 changer transitions 2/605 dead transitions. [2024-02-05 10:30:29,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 605 transitions, 12459 flow [2024-02-05 10:30:29,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:30:29,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:30:29,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 317 transitions. [2024-02-05 10:30:29,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824961948249619 [2024-02-05 10:30:29,974 INFO L175 Difference]: Start difference. First operand has 384 places, 525 transitions, 10429 flow. Second operand 9 states and 317 transitions. [2024-02-05 10:30:29,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 605 transitions, 12459 flow [2024-02-05 10:30:30,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 605 transitions, 12099 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-02-05 10:30:30,376 INFO L231 Difference]: Finished difference. Result has 387 places, 544 transitions, 10959 flow [2024-02-05 10:30:30,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10093, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=232, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10959, PETRI_PLACES=387, PETRI_TRANSITIONS=544} [2024-02-05 10:30:30,376 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 310 predicate places. [2024-02-05 10:30:30,376 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 544 transitions, 10959 flow [2024-02-05 10:30:30,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.77777777777778) internal successors, (205), 9 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:30,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:30,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:30,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-02-05 10:30:30,377 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:30,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:30,377 INFO L85 PathProgramCache]: Analyzing trace with hash -439332579, now seen corresponding path program 6 times [2024-02-05 10:30:30,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:30,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791056685] [2024-02-05 10:30:30,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:30,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:30,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:30,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:30,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:30,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791056685] [2024-02-05 10:30:30,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791056685] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:30,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:30,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:30:30,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752345211] [2024-02-05 10:30:30,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:30,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:30:30,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:30,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:30:30,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:30:30,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:30:30,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 544 transitions, 10959 flow. Second operand has 9 states, 9 states have (on average 22.77777777777778) internal successors, (205), 9 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:30,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:30,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:30:30,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:31,668 INFO L124 PetriNetUnfolderBase]: 2581/4782 cut-off events. [2024-02-05 10:30:31,669 INFO L125 PetriNetUnfolderBase]: For 111082/111136 co-relation queries the response was YES. [2024-02-05 10:30:31,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32070 conditions, 4782 events. 2581/4782 cut-off events. For 111082/111136 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 33692 event pairs, 209 based on Foata normal form. 9/4739 useless extension candidates. Maximal degree in co-relation 31952. Up to 1536 conditions per place. [2024-02-05 10:30:31,724 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 321 selfloop transitions, 269 changer transitions 2/613 dead transitions. [2024-02-05 10:30:31,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 613 transitions, 12781 flow [2024-02-05 10:30:31,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:30:31,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:30:31,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 314 transitions. [2024-02-05 10:30:31,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4779299847792998 [2024-02-05 10:30:31,725 INFO L175 Difference]: Start difference. First operand has 387 places, 544 transitions, 10959 flow. Second operand 9 states and 314 transitions. [2024-02-05 10:30:31,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 613 transitions, 12781 flow [2024-02-05 10:30:32,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 613 transitions, 12434 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-02-05 10:30:32,169 INFO L231 Difference]: Finished difference. Result has 392 places, 555 transitions, 11389 flow [2024-02-05 10:30:32,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10619, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11389, PETRI_PLACES=392, PETRI_TRANSITIONS=555} [2024-02-05 10:30:32,170 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 315 predicate places. [2024-02-05 10:30:32,170 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 555 transitions, 11389 flow [2024-02-05 10:30:32,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.77777777777778) internal successors, (205), 9 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:32,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:32,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:32,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-02-05 10:30:32,171 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:32,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:32,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1027125709, now seen corresponding path program 1 times [2024-02-05 10:30:32,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:32,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125390919] [2024-02-05 10:30:32,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:32,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:32,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:32,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:32,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:32,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125390919] [2024-02-05 10:30:32,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125390919] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:32,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:32,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:30:32,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174654574] [2024-02-05 10:30:32,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:32,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:30:32,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:32,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:30:32,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:30:32,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:30:32,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 555 transitions, 11389 flow. Second operand has 9 states, 9 states have (on average 22.77777777777778) internal successors, (205), 9 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:32,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:32,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:30:32,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:33,734 INFO L124 PetriNetUnfolderBase]: 3056/5641 cut-off events. [2024-02-05 10:30:33,735 INFO L125 PetriNetUnfolderBase]: For 145873/146092 co-relation queries the response was YES. [2024-02-05 10:30:33,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39144 conditions, 5641 events. 3056/5641 cut-off events. For 145873/146092 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 40128 event pairs, 437 based on Foata normal form. 70/5541 useless extension candidates. Maximal degree in co-relation 39024. Up to 2354 conditions per place. [2024-02-05 10:30:33,916 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 354 selfloop transitions, 213 changer transitions 2/609 dead transitions. [2024-02-05 10:30:33,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 609 transitions, 12936 flow [2024-02-05 10:30:33,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:30:33,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:30:33,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 297 transitions. [2024-02-05 10:30:33,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520547945205479 [2024-02-05 10:30:33,917 INFO L175 Difference]: Start difference. First operand has 392 places, 555 transitions, 11389 flow. Second operand 9 states and 297 transitions. [2024-02-05 10:30:33,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 609 transitions, 12936 flow [2024-02-05 10:30:34,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 609 transitions, 12379 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-02-05 10:30:34,418 INFO L231 Difference]: Finished difference. Result has 393 places, 555 transitions, 11291 flow [2024-02-05 10:30:34,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10850, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11291, PETRI_PLACES=393, PETRI_TRANSITIONS=555} [2024-02-05 10:30:34,418 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 316 predicate places. [2024-02-05 10:30:34,418 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 555 transitions, 11291 flow [2024-02-05 10:30:34,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.77777777777778) internal successors, (205), 9 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:34,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:34,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:34,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-02-05 10:30:34,419 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:34,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:34,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1483693307, now seen corresponding path program 7 times [2024-02-05 10:30:34,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:34,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108841163] [2024-02-05 10:30:34,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:34,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:34,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:34,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:34,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:34,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108841163] [2024-02-05 10:30:34,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108841163] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:34,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:34,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:30:34,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460159164] [2024-02-05 10:30:34,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:34,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:30:34,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:34,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:30:34,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:30:34,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:30:34,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 555 transitions, 11291 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:34,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:34,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:30:34,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:35,877 INFO L124 PetriNetUnfolderBase]: 2545/4750 cut-off events. [2024-02-05 10:30:35,877 INFO L125 PetriNetUnfolderBase]: For 114057/114111 co-relation queries the response was YES. [2024-02-05 10:30:35,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32514 conditions, 4750 events. 2545/4750 cut-off events. For 114057/114111 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 33729 event pairs, 486 based on Foata normal form. 17/4715 useless extension candidates. Maximal degree in co-relation 32394. Up to 3107 conditions per place. [2024-02-05 10:30:35,938 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 438 selfloop transitions, 175 changer transitions 0/634 dead transitions. [2024-02-05 10:30:35,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 634 transitions, 13287 flow [2024-02-05 10:30:35,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-05 10:30:35,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-05 10:30:35,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 342 transitions. [2024-02-05 10:30:35,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4684931506849315 [2024-02-05 10:30:35,940 INFO L175 Difference]: Start difference. First operand has 393 places, 555 transitions, 11291 flow. Second operand 10 states and 342 transitions. [2024-02-05 10:30:35,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 634 transitions, 13287 flow [2024-02-05 10:30:36,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 634 transitions, 12861 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-02-05 10:30:36,404 INFO L231 Difference]: Finished difference. Result has 395 places, 555 transitions, 11227 flow [2024-02-05 10:30:36,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10865, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11227, PETRI_PLACES=395, PETRI_TRANSITIONS=555} [2024-02-05 10:30:36,404 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 318 predicate places. [2024-02-05 10:30:36,404 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 555 transitions, 11227 flow [2024-02-05 10:30:36,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:36,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:36,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:36,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-02-05 10:30:36,405 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:36,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:36,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1225022063, now seen corresponding path program 8 times [2024-02-05 10:30:36,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:36,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677568230] [2024-02-05 10:30:36,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:36,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:36,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:36,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:36,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677568230] [2024-02-05 10:30:36,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677568230] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:36,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:36,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:30:36,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800618494] [2024-02-05 10:30:36,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:36,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:30:36,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:36,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:30:36,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:30:36,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:30:36,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 555 transitions, 11227 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:36,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:36,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:30:36,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:37,850 INFO L124 PetriNetUnfolderBase]: 2521/4710 cut-off events. [2024-02-05 10:30:37,850 INFO L125 PetriNetUnfolderBase]: For 110169/110223 co-relation queries the response was YES. [2024-02-05 10:30:37,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31929 conditions, 4710 events. 2521/4710 cut-off events. For 110169/110223 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 33520 event pairs, 490 based on Foata normal form. 17/4675 useless extension candidates. Maximal degree in co-relation 31808. Up to 3099 conditions per place. [2024-02-05 10:30:37,900 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 426 selfloop transitions, 179 changer transitions 0/626 dead transitions. [2024-02-05 10:30:37,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 626 transitions, 13088 flow [2024-02-05 10:30:37,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-05 10:30:37,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-05 10:30:37,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 340 transitions. [2024-02-05 10:30:37,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4657534246575342 [2024-02-05 10:30:37,902 INFO L175 Difference]: Start difference. First operand has 395 places, 555 transitions, 11227 flow. Second operand 10 states and 340 transitions. [2024-02-05 10:30:37,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 626 transitions, 13088 flow [2024-02-05 10:30:38,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 626 transitions, 12738 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-02-05 10:30:38,302 INFO L231 Difference]: Finished difference. Result has 396 places, 555 transitions, 11245 flow [2024-02-05 10:30:38,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10877, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11245, PETRI_PLACES=396, PETRI_TRANSITIONS=555} [2024-02-05 10:30:38,302 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 319 predicate places. [2024-02-05 10:30:38,303 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 555 transitions, 11245 flow [2024-02-05 10:30:38,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:38,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:38,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:38,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-02-05 10:30:38,303 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:38,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:38,303 INFO L85 PathProgramCache]: Analyzing trace with hash -926213513, now seen corresponding path program 2 times [2024-02-05 10:30:38,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:38,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259710683] [2024-02-05 10:30:38,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:38,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:38,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:38,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:38,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:38,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259710683] [2024-02-05 10:30:38,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259710683] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:38,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:38,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:30:38,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300908438] [2024-02-05 10:30:38,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:38,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:30:38,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:38,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:30:38,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:30:38,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:30:38,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 555 transitions, 11245 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:38,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:38,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:30:38,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:39,813 INFO L124 PetriNetUnfolderBase]: 2988/5518 cut-off events. [2024-02-05 10:30:39,814 INFO L125 PetriNetUnfolderBase]: For 135988/136270 co-relation queries the response was YES. [2024-02-05 10:30:39,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37641 conditions, 5518 events. 2988/5518 cut-off events. For 135988/136270 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 39400 event pairs, 538 based on Foata normal form. 92/5435 useless extension candidates. Maximal degree in co-relation 37519. Up to 3418 conditions per place. [2024-02-05 10:30:39,884 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 408 selfloop transitions, 168 changer transitions 0/616 dead transitions. [2024-02-05 10:30:39,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 616 transitions, 12840 flow [2024-02-05 10:30:39,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-05 10:30:39,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-05 10:30:39,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 322 transitions. [2024-02-05 10:30:39,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4410958904109589 [2024-02-05 10:30:39,885 INFO L175 Difference]: Start difference. First operand has 396 places, 555 transitions, 11245 flow. Second operand 10 states and 322 transitions. [2024-02-05 10:30:39,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 616 transitions, 12840 flow [2024-02-05 10:30:40,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 616 transitions, 12534 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-02-05 10:30:40,441 INFO L231 Difference]: Finished difference. Result has 398 places, 555 transitions, 11287 flow [2024-02-05 10:30:40,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10939, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11287, PETRI_PLACES=398, PETRI_TRANSITIONS=555} [2024-02-05 10:30:40,442 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 321 predicate places. [2024-02-05 10:30:40,442 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 555 transitions, 11287 flow [2024-02-05 10:30:40,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:40,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:40,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:40,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-02-05 10:30:40,442 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:40,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:40,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1152858191, now seen corresponding path program 3 times [2024-02-05 10:30:40,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:40,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699793455] [2024-02-05 10:30:40,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:40,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:40,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:40,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:40,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:40,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699793455] [2024-02-05 10:30:40,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699793455] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:40,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:40,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:30:40,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093994889] [2024-02-05 10:30:40,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:40,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:30:40,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:40,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:30:40,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:30:40,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:30:40,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 555 transitions, 11287 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:40,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:40,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:30:40,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:42,062 INFO L124 PetriNetUnfolderBase]: 2978/5493 cut-off events. [2024-02-05 10:30:42,062 INFO L125 PetriNetUnfolderBase]: For 137869/138165 co-relation queries the response was YES. [2024-02-05 10:30:42,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37597 conditions, 5493 events. 2978/5493 cut-off events. For 137869/138165 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 39195 event pairs, 522 based on Foata normal form. 96/5413 useless extension candidates. Maximal degree in co-relation 37474. Up to 3414 conditions per place. [2024-02-05 10:30:42,141 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 410 selfloop transitions, 172 changer transitions 0/622 dead transitions. [2024-02-05 10:30:42,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 622 transitions, 12916 flow [2024-02-05 10:30:42,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-05 10:30:42,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-05 10:30:42,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 375 transitions. [2024-02-05 10:30:42,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4280821917808219 [2024-02-05 10:30:42,142 INFO L175 Difference]: Start difference. First operand has 398 places, 555 transitions, 11287 flow. Second operand 12 states and 375 transitions. [2024-02-05 10:30:42,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 622 transitions, 12916 flow [2024-02-05 10:30:42,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 622 transitions, 12580 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-02-05 10:30:42,717 INFO L231 Difference]: Finished difference. Result has 401 places, 555 transitions, 11313 flow [2024-02-05 10:30:42,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10951, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11313, PETRI_PLACES=401, PETRI_TRANSITIONS=555} [2024-02-05 10:30:42,718 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 324 predicate places. [2024-02-05 10:30:42,718 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 555 transitions, 11313 flow [2024-02-05 10:30:42,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:42,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:42,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:42,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-02-05 10:30:42,719 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:42,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:42,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1151937491, now seen corresponding path program 4 times [2024-02-05 10:30:42,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:42,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258716851] [2024-02-05 10:30:42,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:42,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:42,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:42,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:42,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258716851] [2024-02-05 10:30:42,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258716851] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:42,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:42,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:30:42,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543246684] [2024-02-05 10:30:42,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:42,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:30:42,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:42,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:30:42,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:30:42,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:30:42,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 555 transitions, 11313 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:42,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:42,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:30:42,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:44,368 INFO L124 PetriNetUnfolderBase]: 2963/5464 cut-off events. [2024-02-05 10:30:44,368 INFO L125 PetriNetUnfolderBase]: For 138593/138885 co-relation queries the response was YES. [2024-02-05 10:30:44,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37511 conditions, 5464 events. 2963/5464 cut-off events. For 138593/138885 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 38947 event pairs, 518 based on Foata normal form. 96/5380 useless extension candidates. Maximal degree in co-relation 37387. Up to 3408 conditions per place. [2024-02-05 10:30:44,425 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 402 selfloop transitions, 175 changer transitions 0/617 dead transitions. [2024-02-05 10:30:44,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 617 transitions, 12832 flow [2024-02-05 10:30:44,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-05 10:30:44,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-05 10:30:44,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 396 transitions. [2024-02-05 10:30:44,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4172813487881981 [2024-02-05 10:30:44,426 INFO L175 Difference]: Start difference. First operand has 401 places, 555 transitions, 11313 flow. Second operand 13 states and 396 transitions. [2024-02-05 10:30:44,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 617 transitions, 12832 flow [2024-02-05 10:30:44,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 617 transitions, 12484 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-02-05 10:30:44,949 INFO L231 Difference]: Finished difference. Result has 403 places, 555 transitions, 11325 flow [2024-02-05 10:30:44,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10965, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=11325, PETRI_PLACES=403, PETRI_TRANSITIONS=555} [2024-02-05 10:30:44,949 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 326 predicate places. [2024-02-05 10:30:44,950 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 555 transitions, 11325 flow [2024-02-05 10:30:44,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:44,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:44,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:44,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-02-05 10:30:44,950 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:44,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:44,950 INFO L85 PathProgramCache]: Analyzing trace with hash 515570913, now seen corresponding path program 9 times [2024-02-05 10:30:44,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:44,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156503134] [2024-02-05 10:30:44,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:44,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:44,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:45,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:45,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:45,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156503134] [2024-02-05 10:30:45,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156503134] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:45,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:45,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:30:45,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49649293] [2024-02-05 10:30:45,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:45,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:30:45,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:45,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:30:45,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:30:45,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:30:45,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 555 transitions, 11325 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:45,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:45,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:30:45,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:46,331 INFO L124 PetriNetUnfolderBase]: 2457/4595 cut-off events. [2024-02-05 10:30:46,332 INFO L125 PetriNetUnfolderBase]: For 111691/111745 co-relation queries the response was YES. [2024-02-05 10:30:46,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31498 conditions, 4595 events. 2457/4595 cut-off events. For 111691/111745 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 32624 event pairs, 423 based on Foata normal form. 17/4559 useless extension candidates. Maximal degree in co-relation 31373. Up to 1651 conditions per place. [2024-02-05 10:30:46,388 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 408 selfloop transitions, 213 changer transitions 0/642 dead transitions. [2024-02-05 10:30:46,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 642 transitions, 13503 flow [2024-02-05 10:30:46,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-05 10:30:46,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-05 10:30:46,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 361 transitions. [2024-02-05 10:30:46,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44956413449564137 [2024-02-05 10:30:46,389 INFO L175 Difference]: Start difference. First operand has 403 places, 555 transitions, 11325 flow. Second operand 11 states and 361 transitions. [2024-02-05 10:30:46,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 642 transitions, 13503 flow [2024-02-05 10:30:46,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 642 transitions, 13153 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-02-05 10:30:46,844 INFO L231 Difference]: Finished difference. Result has 402 places, 555 transitions, 11415 flow [2024-02-05 10:30:46,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10975, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11415, PETRI_PLACES=402, PETRI_TRANSITIONS=555} [2024-02-05 10:30:46,844 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 325 predicate places. [2024-02-05 10:30:46,844 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 555 transitions, 11415 flow [2024-02-05 10:30:46,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:46,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:46,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:46,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-02-05 10:30:46,845 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:46,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:46,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1858065641, now seen corresponding path program 10 times [2024-02-05 10:30:46,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:46,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284994256] [2024-02-05 10:30:46,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:46,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:46,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:47,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:47,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:47,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284994256] [2024-02-05 10:30:47,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284994256] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:47,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:47,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:30:47,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734884189] [2024-02-05 10:30:47,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:47,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:30:47,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:47,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:30:47,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:30:47,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:30:47,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 555 transitions, 11415 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:47,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:47,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:30:47,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:48,213 INFO L124 PetriNetUnfolderBase]: 2433/4555 cut-off events. [2024-02-05 10:30:48,214 INFO L125 PetriNetUnfolderBase]: For 112420/112474 co-relation queries the response was YES. [2024-02-05 10:30:48,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31478 conditions, 4555 events. 2433/4555 cut-off events. For 112420/112474 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 32282 event pairs, 431 based on Foata normal form. 17/4519 useless extension candidates. Maximal degree in co-relation 31352. Up to 1643 conditions per place. [2024-02-05 10:30:48,272 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 376 selfloop transitions, 237 changer transitions 0/634 dead transitions. [2024-02-05 10:30:48,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 634 transitions, 13454 flow [2024-02-05 10:30:48,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-05 10:30:48,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-05 10:30:48,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 359 transitions. [2024-02-05 10:30:48,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44707347447073476 [2024-02-05 10:30:48,273 INFO L175 Difference]: Start difference. First operand has 402 places, 555 transitions, 11415 flow. Second operand 11 states and 359 transitions. [2024-02-05 10:30:48,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 634 transitions, 13454 flow [2024-02-05 10:30:48,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 634 transitions, 12993 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-02-05 10:30:48,714 INFO L231 Difference]: Finished difference. Result has 403 places, 555 transitions, 11438 flow [2024-02-05 10:30:48,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10954, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=237, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11438, PETRI_PLACES=403, PETRI_TRANSITIONS=555} [2024-02-05 10:30:48,714 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 326 predicate places. [2024-02-05 10:30:48,715 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 555 transitions, 11438 flow [2024-02-05 10:30:48,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:48,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:48,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:48,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-02-05 10:30:48,715 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:48,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:48,715 INFO L85 PathProgramCache]: Analyzing trace with hash 507480577, now seen corresponding path program 5 times [2024-02-05 10:30:48,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:48,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639455933] [2024-02-05 10:30:48,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:48,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:48,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:48,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:48,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:48,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639455933] [2024-02-05 10:30:48,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639455933] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:48,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:48,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:30:48,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866584426] [2024-02-05 10:30:48,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:48,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:30:48,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:48,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:30:48,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:30:48,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:30:48,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 555 transitions, 11438 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:48,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:48,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:30:48,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:50,514 INFO L124 PetriNetUnfolderBase]: 3448/6360 cut-off events. [2024-02-05 10:30:50,515 INFO L125 PetriNetUnfolderBase]: For 160491/160802 co-relation queries the response was YES. [2024-02-05 10:30:50,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42875 conditions, 6360 events. 3448/6360 cut-off events. For 160491/160802 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 46540 event pairs, 639 based on Foata normal form. 100/6269 useless extension candidates. Maximal degree in co-relation 42748. Up to 3203 conditions per place. [2024-02-05 10:30:50,581 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 449 selfloop transitions, 202 changer transitions 0/691 dead transitions. [2024-02-05 10:30:50,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 691 transitions, 14399 flow [2024-02-05 10:30:50,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-05 10:30:50,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-05 10:30:50,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 356 transitions. [2024-02-05 10:30:50,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44333748443337484 [2024-02-05 10:30:50,583 INFO L175 Difference]: Start difference. First operand has 403 places, 555 transitions, 11438 flow. Second operand 11 states and 356 transitions. [2024-02-05 10:30:50,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 691 transitions, 14399 flow [2024-02-05 10:30:51,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 691 transitions, 13735 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-02-05 10:30:51,182 INFO L231 Difference]: Finished difference. Result has 406 places, 602 transitions, 12168 flow [2024-02-05 10:30:51,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10876, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12168, PETRI_PLACES=406, PETRI_TRANSITIONS=602} [2024-02-05 10:30:51,182 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 329 predicate places. [2024-02-05 10:30:51,183 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 602 transitions, 12168 flow [2024-02-05 10:30:51,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:51,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:51,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:51,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-02-05 10:30:51,183 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:51,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:51,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1097579979, now seen corresponding path program 6 times [2024-02-05 10:30:51,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:51,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078000825] [2024-02-05 10:30:51,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:51,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:51,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:51,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:51,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:51,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078000825] [2024-02-05 10:30:51,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078000825] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:51,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:51,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:30:51,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512550014] [2024-02-05 10:30:51,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:51,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:30:51,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:51,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:30:51,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:30:51,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:30:51,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 602 transitions, 12168 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:51,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:51,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:30:51,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:53,018 INFO L124 PetriNetUnfolderBase]: 3437/6339 cut-off events. [2024-02-05 10:30:53,018 INFO L125 PetriNetUnfolderBase]: For 158369/158693 co-relation queries the response was YES. [2024-02-05 10:30:53,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42848 conditions, 6339 events. 3437/6339 cut-off events. For 158369/158693 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 46333 event pairs, 615 based on Foata normal form. 108/6260 useless extension candidates. Maximal degree in co-relation 42718. Up to 3200 conditions per place. [2024-02-05 10:30:53,097 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 467 selfloop transitions, 206 changer transitions 0/713 dead transitions. [2024-02-05 10:30:53,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 713 transitions, 14585 flow [2024-02-05 10:30:53,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-05 10:30:53,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-05 10:30:53,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 417 transitions. [2024-02-05 10:30:53,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43940990516332984 [2024-02-05 10:30:53,098 INFO L175 Difference]: Start difference. First operand has 406 places, 602 transitions, 12168 flow. Second operand 13 states and 417 transitions. [2024-02-05 10:30:53,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 713 transitions, 14585 flow [2024-02-05 10:30:53,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 713 transitions, 14304 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-02-05 10:30:53,811 INFO L231 Difference]: Finished difference. Result has 413 places, 604 transitions, 12374 flow [2024-02-05 10:30:53,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11887, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12374, PETRI_PLACES=413, PETRI_TRANSITIONS=604} [2024-02-05 10:30:53,812 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 336 predicate places. [2024-02-05 10:30:53,812 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 604 transitions, 12374 flow [2024-02-05 10:30:53,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:53,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:53,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:53,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-02-05 10:30:53,813 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:53,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:53,813 INFO L85 PathProgramCache]: Analyzing trace with hash 138387437, now seen corresponding path program 7 times [2024-02-05 10:30:53,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:53,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606018007] [2024-02-05 10:30:53,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:53,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:53,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:54,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:54,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:54,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606018007] [2024-02-05 10:30:54,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606018007] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:54,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:54,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:30:54,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648827697] [2024-02-05 10:30:54,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:54,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:30:54,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:54,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:30:54,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:30:54,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:30:54,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 604 transitions, 12374 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:54,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:54,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:30:54,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:55,713 INFO L124 PetriNetUnfolderBase]: 3423/6309 cut-off events. [2024-02-05 10:30:55,714 INFO L125 PetriNetUnfolderBase]: For 165134/165468 co-relation queries the response was YES. [2024-02-05 10:30:55,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42939 conditions, 6309 events. 3423/6309 cut-off events. For 165134/165468 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 46128 event pairs, 611 based on Foata normal form. 112/6232 useless extension candidates. Maximal degree in co-relation 42808. Up to 3194 conditions per place. [2024-02-05 10:30:55,805 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 459 selfloop transitions, 209 changer transitions 0/708 dead transitions. [2024-02-05 10:30:55,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 708 transitions, 14632 flow [2024-02-05 10:30:55,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-02-05 10:30:55,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-02-05 10:30:55,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 438 transitions. [2024-02-05 10:30:55,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-02-05 10:30:55,806 INFO L175 Difference]: Start difference. First operand has 413 places, 604 transitions, 12374 flow. Second operand 14 states and 438 transitions. [2024-02-05 10:30:55,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 708 transitions, 14632 flow [2024-02-05 10:30:56,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 708 transitions, 14170 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-02-05 10:30:56,561 INFO L231 Difference]: Finished difference. Result has 416 places, 604 transitions, 12340 flow [2024-02-05 10:30:56,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11912, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=12340, PETRI_PLACES=416, PETRI_TRANSITIONS=604} [2024-02-05 10:30:56,562 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 339 predicate places. [2024-02-05 10:30:56,562 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 604 transitions, 12340 flow [2024-02-05 10:30:56,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:56,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:56,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:56,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-02-05 10:30:56,562 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:56,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:56,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1645048373, now seen corresponding path program 8 times [2024-02-05 10:30:56,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:56,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66868939] [2024-02-05 10:30:56,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:56,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:56,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:56,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:56,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:56,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66868939] [2024-02-05 10:30:56,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66868939] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:56,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:56,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:30:56,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339635367] [2024-02-05 10:30:56,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:56,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:30:56,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:56,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:30:56,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:30:56,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:30:56,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 604 transitions, 12340 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:56,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:56,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:30:56,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:58,361 INFO L124 PetriNetUnfolderBase]: 3404/6285 cut-off events. [2024-02-05 10:30:58,361 INFO L125 PetriNetUnfolderBase]: For 161798/162097 co-relation queries the response was YES. [2024-02-05 10:30:58,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42898 conditions, 6285 events. 3404/6285 cut-off events. For 161798/162097 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 46024 event pairs, 720 based on Foata normal form. 90/6170 useless extension candidates. Maximal degree in co-relation 42766. Up to 4959 conditions per place. [2024-02-05 10:30:58,434 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 528 selfloop transitions, 91 changer transitions 0/659 dead transitions. [2024-02-05 10:30:58,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 659 transitions, 14130 flow [2024-02-05 10:30:58,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-05 10:30:58,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-05 10:30:58,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 311 transitions. [2024-02-05 10:30:58,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.426027397260274 [2024-02-05 10:30:58,436 INFO L175 Difference]: Start difference. First operand has 416 places, 604 transitions, 12340 flow. Second operand 10 states and 311 transitions. [2024-02-05 10:30:58,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 659 transitions, 14130 flow [2024-02-05 10:30:59,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 659 transitions, 13795 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-02-05 10:30:59,201 INFO L231 Difference]: Finished difference. Result has 419 places, 608 transitions, 12322 flow [2024-02-05 10:30:59,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12005, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12322, PETRI_PLACES=419, PETRI_TRANSITIONS=608} [2024-02-05 10:30:59,202 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 342 predicate places. [2024-02-05 10:30:59,202 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 608 transitions, 12322 flow [2024-02-05 10:30:59,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:59,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:59,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:59,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-02-05 10:30:59,202 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:59,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:59,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1645969073, now seen corresponding path program 9 times [2024-02-05 10:30:59,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:59,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621782710] [2024-02-05 10:30:59,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:59,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:59,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:59,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:59,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:59,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621782710] [2024-02-05 10:30:59,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621782710] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:59,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:59,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:30:59,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660207087] [2024-02-05 10:30:59,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:59,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:30:59,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:59,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:30:59,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:30:59,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:30:59,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 608 transitions, 12322 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:59,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:59,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:30:59,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:01,072 INFO L124 PetriNetUnfolderBase]: 3388/6257 cut-off events. [2024-02-05 10:31:01,073 INFO L125 PetriNetUnfolderBase]: For 160836/161137 co-relation queries the response was YES. [2024-02-05 10:31:01,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42440 conditions, 6257 events. 3388/6257 cut-off events. For 160836/161137 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 45720 event pairs, 716 based on Foata normal form. 94/6146 useless extension candidates. Maximal degree in co-relation 42306. Up to 4953 conditions per place. [2024-02-05 10:31:01,152 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 536 selfloop transitions, 87 changer transitions 0/663 dead transitions. [2024-02-05 10:31:01,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 663 transitions, 14055 flow [2024-02-05 10:31:01,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-05 10:31:01,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-05 10:31:01,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 316 transitions. [2024-02-05 10:31:01,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4328767123287671 [2024-02-05 10:31:01,153 INFO L175 Difference]: Start difference. First operand has 419 places, 608 transitions, 12322 flow. Second operand 10 states and 316 transitions. [2024-02-05 10:31:01,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 663 transitions, 14055 flow [2024-02-05 10:31:01,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 663 transitions, 13904 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-02-05 10:31:01,828 INFO L231 Difference]: Finished difference. Result has 423 places, 608 transitions, 12356 flow [2024-02-05 10:31:01,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12171, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=521, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12356, PETRI_PLACES=423, PETRI_TRANSITIONS=608} [2024-02-05 10:31:01,829 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 346 predicate places. [2024-02-05 10:31:01,829 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 608 transitions, 12356 flow [2024-02-05 10:31:01,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:01,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:01,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:31:01,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-02-05 10:31:01,830 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:31:01,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:01,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1857578209, now seen corresponding path program 11 times [2024-02-05 10:31:01,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:01,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476565659] [2024-02-05 10:31:01,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:01,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:01,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:02,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:02,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:02,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476565659] [2024-02-05 10:31:02,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476565659] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:02,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:02,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:31:02,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747230618] [2024-02-05 10:31:02,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:02,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:31:02,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:02,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:31:02,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:31:02,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:31:02,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 608 transitions, 12356 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:02,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:02,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:31:02,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:03,500 INFO L124 PetriNetUnfolderBase]: 2817/5262 cut-off events. [2024-02-05 10:31:03,500 INFO L125 PetriNetUnfolderBase]: For 128511/128565 co-relation queries the response was YES. [2024-02-05 10:31:03,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35070 conditions, 5262 events. 2817/5262 cut-off events. For 128511/128565 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 38234 event pairs, 536 based on Foata normal form. 57/5267 useless extension candidates. Maximal degree in co-relation 34935. Up to 3736 conditions per place. [2024-02-05 10:31:03,555 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 491 selfloop transitions, 148 changer transitions 0/660 dead transitions. [2024-02-05 10:31:03,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 660 transitions, 14168 flow [2024-02-05 10:31:03,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-05 10:31:03,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-05 10:31:03,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 310 transitions. [2024-02-05 10:31:03,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4246575342465753 [2024-02-05 10:31:03,556 INFO L175 Difference]: Start difference. First operand has 423 places, 608 transitions, 12356 flow. Second operand 10 states and 310 transitions. [2024-02-05 10:31:03,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 660 transitions, 14168 flow [2024-02-05 10:31:04,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 660 transitions, 14039 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-02-05 10:31:04,066 INFO L231 Difference]: Finished difference. Result has 427 places, 608 transitions, 12569 flow [2024-02-05 10:31:04,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12227, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12569, PETRI_PLACES=427, PETRI_TRANSITIONS=608} [2024-02-05 10:31:04,067 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 350 predicate places. [2024-02-05 10:31:04,067 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 608 transitions, 12569 flow [2024-02-05 10:31:04,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:04,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:04,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:31:04,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-02-05 10:31:04,067 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:31:04,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:04,068 INFO L85 PathProgramCache]: Analyzing trace with hash 300510759, now seen corresponding path program 10 times [2024-02-05 10:31:04,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:04,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922101028] [2024-02-05 10:31:04,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:04,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:04,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:04,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:04,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:04,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922101028] [2024-02-05 10:31:04,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922101028] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:04,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:04,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:31:04,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403902826] [2024-02-05 10:31:04,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:04,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:31:04,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:04,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:31:04,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:31:04,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:31:04,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 608 transitions, 12569 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:04,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:04,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:31:04,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:05,879 INFO L124 PetriNetUnfolderBase]: 3284/6084 cut-off events. [2024-02-05 10:31:05,879 INFO L125 PetriNetUnfolderBase]: For 155102/155396 co-relation queries the response was YES. [2024-02-05 10:31:05,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41158 conditions, 6084 events. 3284/6084 cut-off events. For 155102/155396 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 44471 event pairs, 689 based on Foata normal form. 94/5979 useless extension candidates. Maximal degree in co-relation 41022. Up to 4860 conditions per place. [2024-02-05 10:31:05,963 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 536 selfloop transitions, 86 changer transitions 0/662 dead transitions. [2024-02-05 10:31:05,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 662 transitions, 14164 flow [2024-02-05 10:31:05,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-05 10:31:05,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-05 10:31:05,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 361 transitions. [2024-02-05 10:31:05,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121004566210046 [2024-02-05 10:31:05,964 INFO L175 Difference]: Start difference. First operand has 427 places, 608 transitions, 12569 flow. Second operand 12 states and 361 transitions. [2024-02-05 10:31:05,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 662 transitions, 14164 flow [2024-02-05 10:31:06,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 662 transitions, 13526 flow, removed 15 selfloop flow, removed 14 redundant places. [2024-02-05 10:31:06,680 INFO L231 Difference]: Finished difference. Result has 425 places, 608 transitions, 12114 flow [2024-02-05 10:31:06,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11931, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12114, PETRI_PLACES=425, PETRI_TRANSITIONS=608} [2024-02-05 10:31:06,681 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 348 predicate places. [2024-02-05 10:31:06,681 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 608 transitions, 12114 flow [2024-02-05 10:31:06,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:06,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:06,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:31:06,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-02-05 10:31:06,681 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:31:06,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:06,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1922008381, now seen corresponding path program 7 times [2024-02-05 10:31:06,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:06,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138930802] [2024-02-05 10:31:06,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:06,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:06,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:06,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:06,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:06,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138930802] [2024-02-05 10:31:06,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138930802] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:06,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:06,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:31:06,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210643924] [2024-02-05 10:31:06,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:06,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:31:06,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:06,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:31:06,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:31:06,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:31:06,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 608 transitions, 12114 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:06,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:06,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:31:06,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:08,535 INFO L124 PetriNetUnfolderBase]: 3293/6093 cut-off events. [2024-02-05 10:31:08,535 INFO L125 PetriNetUnfolderBase]: For 141697/141992 co-relation queries the response was YES. [2024-02-05 10:31:08,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40373 conditions, 6093 events. 3293/6093 cut-off events. For 141697/141992 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 44451 event pairs, 714 based on Foata normal form. 83/5967 useless extension candidates. Maximal degree in co-relation 40240. Up to 5023 conditions per place. [2024-02-05 10:31:08,614 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 519 selfloop transitions, 76 changer transitions 0/635 dead transitions. [2024-02-05 10:31:08,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 635 transitions, 13447 flow [2024-02-05 10:31:08,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:31:08,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:31:08,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 266 transitions. [2024-02-05 10:31:08,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4048706240487062 [2024-02-05 10:31:08,615 INFO L175 Difference]: Start difference. First operand has 425 places, 608 transitions, 12114 flow. Second operand 9 states and 266 transitions. [2024-02-05 10:31:08,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 635 transitions, 13447 flow [2024-02-05 10:31:09,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 635 transitions, 13272 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-02-05 10:31:09,310 INFO L231 Difference]: Finished difference. Result has 425 places, 608 transitions, 12103 flow [2024-02-05 10:31:09,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11939, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=532, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12103, PETRI_PLACES=425, PETRI_TRANSITIONS=608} [2024-02-05 10:31:09,310 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 348 predicate places. [2024-02-05 10:31:09,310 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 608 transitions, 12103 flow [2024-02-05 10:31:09,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:09,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:09,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:31:09,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-02-05 10:31:09,311 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:31:09,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:09,311 INFO L85 PathProgramCache]: Analyzing trace with hash -289591987, now seen corresponding path program 8 times [2024-02-05 10:31:09,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:09,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505768519] [2024-02-05 10:31:09,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:09,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:09,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:09,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:09,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:09,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505768519] [2024-02-05 10:31:09,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505768519] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:09,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:09,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:31:09,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703518874] [2024-02-05 10:31:09,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:09,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:31:09,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:09,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:31:09,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:31:09,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:31:09,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 608 transitions, 12103 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:09,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:09,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:31:09,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:11,037 INFO L124 PetriNetUnfolderBase]: 3285/6092 cut-off events. [2024-02-05 10:31:11,038 INFO L125 PetriNetUnfolderBase]: For 142308/142592 co-relation queries the response was YES. [2024-02-05 10:31:11,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40314 conditions, 6092 events. 3285/6092 cut-off events. For 142308/142592 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 44331 event pairs, 661 based on Foata normal form. 83/5975 useless extension candidates. Maximal degree in co-relation 40180. Up to 4525 conditions per place. [2024-02-05 10:31:11,112 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 469 selfloop transitions, 120 changer transitions 0/629 dead transitions. [2024-02-05 10:31:11,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 629 transitions, 13389 flow [2024-02-05 10:31:11,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:31:11,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:31:11,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 219 transitions. [2024-02-05 10:31:11,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-02-05 10:31:11,113 INFO L175 Difference]: Start difference. First operand has 425 places, 608 transitions, 12103 flow. Second operand 7 states and 219 transitions. [2024-02-05 10:31:11,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 629 transitions, 13389 flow [2024-02-05 10:31:11,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 629 transitions, 13228 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-02-05 10:31:11,734 INFO L231 Difference]: Finished difference. Result has 424 places, 608 transitions, 12196 flow [2024-02-05 10:31:11,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11942, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12196, PETRI_PLACES=424, PETRI_TRANSITIONS=608} [2024-02-05 10:31:11,734 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 347 predicate places. [2024-02-05 10:31:11,735 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 608 transitions, 12196 flow [2024-02-05 10:31:11,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:11,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:11,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:31:11,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-02-05 10:31:11,735 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:31:11,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:11,736 INFO L85 PathProgramCache]: Analyzing trace with hash -323967013, now seen corresponding path program 9 times [2024-02-05 10:31:11,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:11,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117434251] [2024-02-05 10:31:11,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:11,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:11,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:11,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:11,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:11,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117434251] [2024-02-05 10:31:11,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117434251] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:11,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:11,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:31:11,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158049316] [2024-02-05 10:31:11,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:11,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:31:11,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:11,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:31:11,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:31:12,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:31:12,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 608 transitions, 12196 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:12,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:12,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:31:12,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:13,536 INFO L124 PetriNetUnfolderBase]: 3289/6104 cut-off events. [2024-02-05 10:31:13,536 INFO L125 PetriNetUnfolderBase]: For 144799/145083 co-relation queries the response was YES. [2024-02-05 10:31:13,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40556 conditions, 6104 events. 3289/6104 cut-off events. For 144799/145083 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 44529 event pairs, 651 based on Foata normal form. 83/5987 useless extension candidates. Maximal degree in co-relation 40422. Up to 4717 conditions per place. [2024-02-05 10:31:13,617 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 471 selfloop transitions, 123 changer transitions 0/634 dead transitions. [2024-02-05 10:31:13,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 634 transitions, 13520 flow [2024-02-05 10:31:13,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:31:13,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:31:13,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 245 transitions. [2024-02-05 10:31:13,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4195205479452055 [2024-02-05 10:31:13,618 INFO L175 Difference]: Start difference. First operand has 424 places, 608 transitions, 12196 flow. Second operand 8 states and 245 transitions. [2024-02-05 10:31:13,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 634 transitions, 13520 flow [2024-02-05 10:31:14,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 634 transitions, 13196 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-02-05 10:31:14,284 INFO L231 Difference]: Finished difference. Result has 423 places, 609 transitions, 12151 flow [2024-02-05 10:31:14,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11875, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12151, PETRI_PLACES=423, PETRI_TRANSITIONS=609} [2024-02-05 10:31:14,285 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 346 predicate places. [2024-02-05 10:31:14,285 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 609 transitions, 12151 flow [2024-02-05 10:31:14,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:14,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:14,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:31:14,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-02-05 10:31:14,285 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:31:14,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:14,286 INFO L85 PathProgramCache]: Analyzing trace with hash 708291137, now seen corresponding path program 10 times [2024-02-05 10:31:14,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:14,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318458871] [2024-02-05 10:31:14,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:14,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:14,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:14,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:14,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:14,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318458871] [2024-02-05 10:31:14,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318458871] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:14,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:14,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:31:14,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070264753] [2024-02-05 10:31:14,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:14,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:31:14,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:14,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:31:14,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:31:14,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:31:14,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 609 transitions, 12151 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:14,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:14,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:31:14,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:15,979 INFO L124 PetriNetUnfolderBase]: 3349/6169 cut-off events. [2024-02-05 10:31:15,979 INFO L125 PetriNetUnfolderBase]: For 150383/150631 co-relation queries the response was YES. [2024-02-05 10:31:16,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41053 conditions, 6169 events. 3349/6169 cut-off events. For 150383/150631 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 44756 event pairs, 645 based on Foata normal form. 83/6024 useless extension candidates. Maximal degree in co-relation 40922. Up to 4775 conditions per place. [2024-02-05 10:31:16,060 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 469 selfloop transitions, 124 changer transitions 0/633 dead transitions. [2024-02-05 10:31:16,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 633 transitions, 13453 flow [2024-02-05 10:31:16,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:31:16,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:31:16,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 264 transitions. [2024-02-05 10:31:16,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4018264840182648 [2024-02-05 10:31:16,061 INFO L175 Difference]: Start difference. First operand has 423 places, 609 transitions, 12151 flow. Second operand 9 states and 264 transitions. [2024-02-05 10:31:16,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 633 transitions, 13453 flow [2024-02-05 10:31:16,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 633 transitions, 13016 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-02-05 10:31:16,687 INFO L231 Difference]: Finished difference. Result has 418 places, 612 transitions, 12009 flow [2024-02-05 10:31:16,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11705, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12009, PETRI_PLACES=418, PETRI_TRANSITIONS=612} [2024-02-05 10:31:16,687 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 341 predicate places. [2024-02-05 10:31:16,687 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 612 transitions, 12009 flow [2024-02-05 10:31:16,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:16,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:16,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:31:16,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-02-05 10:31:16,688 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:31:16,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:16,688 INFO L85 PathProgramCache]: Analyzing trace with hash 773793389, now seen corresponding path program 11 times [2024-02-05 10:31:16,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:16,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075342709] [2024-02-05 10:31:16,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:16,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:16,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:16,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:16,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:16,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075342709] [2024-02-05 10:31:16,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075342709] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:16,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:16,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:31:16,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519599787] [2024-02-05 10:31:16,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:16,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:31:16,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:16,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:31:16,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:31:16,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:31:16,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 612 transitions, 12009 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:16,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:16,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:31:16,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:18,446 INFO L124 PetriNetUnfolderBase]: 3292/6126 cut-off events. [2024-02-05 10:31:18,446 INFO L125 PetriNetUnfolderBase]: For 140282/140514 co-relation queries the response was YES. [2024-02-05 10:31:18,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39990 conditions, 6126 events. 3292/6126 cut-off events. For 140282/140514 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 44567 event pairs, 388 based on Foata normal form. 76/6033 useless extension candidates. Maximal degree in co-relation 39865. Up to 2058 conditions per place. [2024-02-05 10:31:18,509 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 332 selfloop transitions, 292 changer transitions 0/664 dead transitions. [2024-02-05 10:31:18,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 664 transitions, 13650 flow [2024-02-05 10:31:18,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:31:18,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:31:18,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 293 transitions. [2024-02-05 10:31:18,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4459665144596651 [2024-02-05 10:31:18,511 INFO L175 Difference]: Start difference. First operand has 418 places, 612 transitions, 12009 flow. Second operand 9 states and 293 transitions. [2024-02-05 10:31:18,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 664 transitions, 13650 flow [2024-02-05 10:31:19,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 664 transitions, 13419 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-02-05 10:31:19,092 INFO L231 Difference]: Finished difference. Result has 421 places, 612 transitions, 12392 flow [2024-02-05 10:31:19,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11780, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=292, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12392, PETRI_PLACES=421, PETRI_TRANSITIONS=612} [2024-02-05 10:31:19,092 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 344 predicate places. [2024-02-05 10:31:19,093 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 612 transitions, 12392 flow [2024-02-05 10:31:19,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:19,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:19,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:31:19,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-02-05 10:31:19,093 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:31:19,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:19,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1834741821, now seen corresponding path program 12 times [2024-02-05 10:31:19,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:19,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603402123] [2024-02-05 10:31:19,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:19,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:19,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:19,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:19,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603402123] [2024-02-05 10:31:19,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603402123] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:19,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:19,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:31:19,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281390845] [2024-02-05 10:31:19,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:19,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:31:19,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:19,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:31:19,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:31:19,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:31:19,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 612 transitions, 12392 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:19,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:19,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:31:19,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:20,888 INFO L124 PetriNetUnfolderBase]: 3276/6089 cut-off events. [2024-02-05 10:31:20,889 INFO L125 PetriNetUnfolderBase]: For 149097/149361 co-relation queries the response was YES. [2024-02-05 10:31:20,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40748 conditions, 6089 events. 3276/6089 cut-off events. For 149097/149361 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 44310 event pairs, 333 based on Foata normal form. 94/6015 useless extension candidates. Maximal degree in co-relation 40622. Up to 1849 conditions per place. [2024-02-05 10:31:20,958 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 342 selfloop transitions, 304 changer transitions 0/686 dead transitions. [2024-02-05 10:31:20,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 686 transitions, 14331 flow [2024-02-05 10:31:20,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-05 10:31:20,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-05 10:31:20,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 354 transitions. [2024-02-05 10:31:20,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44084682440846823 [2024-02-05 10:31:20,959 INFO L175 Difference]: Start difference. First operand has 421 places, 612 transitions, 12392 flow. Second operand 11 states and 354 transitions. [2024-02-05 10:31:20,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 686 transitions, 14331 flow [2024-02-05 10:31:21,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 686 transitions, 13641 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-02-05 10:31:21,599 INFO L231 Difference]: Finished difference. Result has 422 places, 612 transitions, 12378 flow [2024-02-05 10:31:21,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11724, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=304, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12378, PETRI_PLACES=422, PETRI_TRANSITIONS=612} [2024-02-05 10:31:21,600 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 345 predicate places. [2024-02-05 10:31:21,600 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 612 transitions, 12378 flow [2024-02-05 10:31:21,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:21,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:21,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:31:21,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-02-05 10:31:21,601 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:31:21,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:21,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1371199085, now seen corresponding path program 13 times [2024-02-05 10:31:21,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:21,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466647525] [2024-02-05 10:31:21,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:21,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:21,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:21,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:21,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:21,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466647525] [2024-02-05 10:31:21,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466647525] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:21,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:21,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:31:21,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121980091] [2024-02-05 10:31:21,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:21,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:31:21,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:21,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:31:21,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:31:21,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:31:21,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 612 transitions, 12378 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:21,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:21,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:31:21,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:23,452 INFO L124 PetriNetUnfolderBase]: 3476/6437 cut-off events. [2024-02-05 10:31:23,452 INFO L125 PetriNetUnfolderBase]: For 158836/159149 co-relation queries the response was YES. [2024-02-05 10:31:23,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42671 conditions, 6437 events. 3476/6437 cut-off events. For 158836/159149 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 47532 event pairs, 694 based on Foata normal form. 106/6343 useless extension candidates. Maximal degree in co-relation 42546. Up to 4721 conditions per place. [2024-02-05 10:31:23,532 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 512 selfloop transitions, 128 changer transitions 0/680 dead transitions. [2024-02-05 10:31:23,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 680 transitions, 14438 flow [2024-02-05 10:31:23,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:31:23,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:31:23,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 283 transitions. [2024-02-05 10:31:23,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4307458143074581 [2024-02-05 10:31:23,533 INFO L175 Difference]: Start difference. First operand has 422 places, 612 transitions, 12378 flow. Second operand 9 states and 283 transitions. [2024-02-05 10:31:23,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 680 transitions, 14438 flow [2024-02-05 10:31:24,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 680 transitions, 13752 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-02-05 10:31:24,215 INFO L231 Difference]: Finished difference. Result has 420 places, 633 transitions, 12473 flow [2024-02-05 10:31:24,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11734, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12473, PETRI_PLACES=420, PETRI_TRANSITIONS=633} [2024-02-05 10:31:24,215 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 343 predicate places. [2024-02-05 10:31:24,216 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 633 transitions, 12473 flow [2024-02-05 10:31:24,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:24,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:24,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:31:24,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-02-05 10:31:24,216 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:31:24,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:24,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1833821121, now seen corresponding path program 14 times [2024-02-05 10:31:24,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:24,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644309782] [2024-02-05 10:31:24,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:24,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:24,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:24,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:24,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:24,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644309782] [2024-02-05 10:31:24,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644309782] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:24,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:24,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:31:24,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681347786] [2024-02-05 10:31:24,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:24,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:31:24,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:24,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:31:24,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:31:24,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:31:24,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 633 transitions, 12473 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:24,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:24,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:31:24,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:26,197 INFO L124 PetriNetUnfolderBase]: 3472/6452 cut-off events. [2024-02-05 10:31:26,197 INFO L125 PetriNetUnfolderBase]: For 148465/148717 co-relation queries the response was YES. [2024-02-05 10:31:26,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41835 conditions, 6452 events. 3472/6452 cut-off events. For 148465/148717 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 47494 event pairs, 373 based on Foata normal form. 86/6352 useless extension candidates. Maximal degree in co-relation 41710. Up to 1931 conditions per place. [2024-02-05 10:31:26,264 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 332 selfloop transitions, 330 changer transitions 0/702 dead transitions. [2024-02-05 10:31:26,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 702 transitions, 14296 flow [2024-02-05 10:31:26,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-05 10:31:26,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-05 10:31:26,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 375 transitions. [2024-02-05 10:31:26,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4280821917808219 [2024-02-05 10:31:26,265 INFO L175 Difference]: Start difference. First operand has 420 places, 633 transitions, 12473 flow. Second operand 12 states and 375 transitions. [2024-02-05 10:31:26,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 702 transitions, 14296 flow [2024-02-05 10:31:26,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 702 transitions, 14079 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-02-05 10:31:26,895 INFO L231 Difference]: Finished difference. Result has 425 places, 633 transitions, 12942 flow [2024-02-05 10:31:26,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12260, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=330, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12942, PETRI_PLACES=425, PETRI_TRANSITIONS=633} [2024-02-05 10:31:26,895 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 348 predicate places. [2024-02-05 10:31:26,896 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 633 transitions, 12942 flow [2024-02-05 10:31:26,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:26,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:26,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:31:26,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-02-05 10:31:26,896 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:31:26,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:26,897 INFO L85 PathProgramCache]: Analyzing trace with hash 908807231, now seen corresponding path program 15 times [2024-02-05 10:31:26,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:26,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288928887] [2024-02-05 10:31:26,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:26,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:27,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:27,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:27,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288928887] [2024-02-05 10:31:27,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288928887] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:27,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:27,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:31:27,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863276314] [2024-02-05 10:31:27,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:27,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:31:27,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:27,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:31:27,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:31:27,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:31:27,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 633 transitions, 12942 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:27,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:27,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:31:27,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:28,788 INFO L124 PetriNetUnfolderBase]: 3444/6381 cut-off events. [2024-02-05 10:31:28,788 INFO L125 PetriNetUnfolderBase]: For 159816/160129 co-relation queries the response was YES. [2024-02-05 10:31:28,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42533 conditions, 6381 events. 3444/6381 cut-off events. For 159816/160129 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 47085 event pairs, 686 based on Foata normal form. 110/6291 useless extension candidates. Maximal degree in co-relation 42408. Up to 4687 conditions per place. [2024-02-05 10:31:28,868 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 524 selfloop transitions, 120 changer transitions 0/684 dead transitions. [2024-02-05 10:31:28,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 684 transitions, 14628 flow [2024-02-05 10:31:28,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:31:28,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:31:28,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 288 transitions. [2024-02-05 10:31:28,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4383561643835616 [2024-02-05 10:31:28,869 INFO L175 Difference]: Start difference. First operand has 425 places, 633 transitions, 12942 flow. Second operand 9 states and 288 transitions. [2024-02-05 10:31:28,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 684 transitions, 14628 flow [2024-02-05 10:31:29,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 684 transitions, 13955 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-02-05 10:31:29,544 INFO L231 Difference]: Finished difference. Result has 422 places, 633 transitions, 12535 flow [2024-02-05 10:31:29,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12277, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12535, PETRI_PLACES=422, PETRI_TRANSITIONS=633} [2024-02-05 10:31:29,545 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 345 predicate places. [2024-02-05 10:31:29,545 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 633 transitions, 12535 flow [2024-02-05 10:31:29,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:29,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:29,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:31:29,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-02-05 10:31:29,546 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:31:29,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:29,546 INFO L85 PathProgramCache]: Analyzing trace with hash 163287981, now seen corresponding path program 16 times [2024-02-05 10:31:29,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:29,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199498523] [2024-02-05 10:31:29,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:29,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:29,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:29,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:29,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:29,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199498523] [2024-02-05 10:31:29,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199498523] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:29,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:29,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:31:29,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848006549] [2024-02-05 10:31:29,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:29,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:31:29,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:29,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:31:29,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:31:29,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:31:29,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 633 transitions, 12535 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:29,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:29,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:31:29,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:31,337 INFO L124 PetriNetUnfolderBase]: 3444/6406 cut-off events. [2024-02-05 10:31:31,337 INFO L125 PetriNetUnfolderBase]: For 146217/146464 co-relation queries the response was YES. [2024-02-05 10:31:31,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41418 conditions, 6406 events. 3444/6406 cut-off events. For 146217/146464 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 47061 event pairs, 412 based on Foata normal form. 79/6295 useless extension candidates. Maximal degree in co-relation 41294. Up to 3893 conditions per place. [2024-02-05 10:31:31,423 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 401 selfloop transitions, 240 changer transitions 0/681 dead transitions. [2024-02-05 10:31:31,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 681 transitions, 14192 flow [2024-02-05 10:31:31,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:31:31,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:31:31,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 266 transitions. [2024-02-05 10:31:31,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4554794520547945 [2024-02-05 10:31:31,428 INFO L175 Difference]: Start difference. First operand has 422 places, 633 transitions, 12535 flow. Second operand 8 states and 266 transitions. [2024-02-05 10:31:31,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 681 transitions, 14192 flow [2024-02-05 10:31:32,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 681 transitions, 14027 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-02-05 10:31:32,095 INFO L231 Difference]: Finished difference. Result has 424 places, 633 transitions, 12947 flow [2024-02-05 10:31:32,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12374, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=240, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12947, PETRI_PLACES=424, PETRI_TRANSITIONS=633} [2024-02-05 10:31:32,096 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 347 predicate places. [2024-02-05 10:31:32,096 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 633 transitions, 12947 flow [2024-02-05 10:31:32,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:32,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:32,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:31:32,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-02-05 10:31:32,097 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:31:32,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:32,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1936596731, now seen corresponding path program 17 times [2024-02-05 10:31:32,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:32,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794137361] [2024-02-05 10:31:32,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:32,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:32,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:32,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:32,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:32,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794137361] [2024-02-05 10:31:32,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794137361] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:32,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:32,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:31:32,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959302640] [2024-02-05 10:31:32,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:32,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:31:32,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:32,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:31:32,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:31:32,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:31:32,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 633 transitions, 12947 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:32,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:32,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:31:32,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:33,968 INFO L124 PetriNetUnfolderBase]: 3415/6337 cut-off events. [2024-02-05 10:31:33,968 INFO L125 PetriNetUnfolderBase]: For 159502/159808 co-relation queries the response was YES. [2024-02-05 10:31:34,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41803 conditions, 6337 events. 3415/6337 cut-off events. For 159502/159808 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 46660 event pairs, 674 based on Foata normal form. 110/6249 useless extension candidates. Maximal degree in co-relation 41679. Up to 4660 conditions per place. [2024-02-05 10:31:34,163 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 527 selfloop transitions, 118 changer transitions 0/685 dead transitions. [2024-02-05 10:31:34,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 685 transitions, 14575 flow [2024-02-05 10:31:34,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-05 10:31:34,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-05 10:31:34,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 335 transitions. [2024-02-05 10:31:34,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41718555417185554 [2024-02-05 10:31:34,164 INFO L175 Difference]: Start difference. First operand has 424 places, 633 transitions, 12947 flow. Second operand 11 states and 335 transitions. [2024-02-05 10:31:34,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 685 transitions, 14575 flow [2024-02-05 10:31:34,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 685 transitions, 14083 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-02-05 10:31:34,736 INFO L231 Difference]: Finished difference. Result has 428 places, 633 transitions, 12709 flow [2024-02-05 10:31:34,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12455, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12709, PETRI_PLACES=428, PETRI_TRANSITIONS=633} [2024-02-05 10:31:34,736 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 351 predicate places. [2024-02-05 10:31:34,736 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 633 transitions, 12709 flow [2024-02-05 10:31:34,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:34,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:34,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:31:34,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-02-05 10:31:34,737 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:31:34,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:34,737 INFO L85 PathProgramCache]: Analyzing trace with hash 164208681, now seen corresponding path program 18 times [2024-02-05 10:31:34,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:34,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974193408] [2024-02-05 10:31:34,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:34,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:34,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:34,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:34,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:34,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974193408] [2024-02-05 10:31:34,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974193408] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:34,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:34,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:31:34,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976399302] [2024-02-05 10:31:34,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:34,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:31:34,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:34,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:31:34,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:31:34,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:31:34,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 633 transitions, 12709 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:34,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:34,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:31:34,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:36,532 INFO L124 PetriNetUnfolderBase]: 3412/6351 cut-off events. [2024-02-05 10:31:36,532 INFO L125 PetriNetUnfolderBase]: For 149767/150014 co-relation queries the response was YES. [2024-02-05 10:31:36,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41190 conditions, 6351 events. 3412/6351 cut-off events. For 149767/150014 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 46713 event pairs, 404 based on Foata normal form. 83/6244 useless extension candidates. Maximal degree in co-relation 41065. Up to 3881 conditions per place. [2024-02-05 10:31:36,638 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 424 selfloop transitions, 219 changer transitions 0/683 dead transitions. [2024-02-05 10:31:36,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 683 transitions, 14379 flow [2024-02-05 10:31:36,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:31:36,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:31:36,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 267 transitions. [2024-02-05 10:31:36,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4571917808219178 [2024-02-05 10:31:36,639 INFO L175 Difference]: Start difference. First operand has 428 places, 633 transitions, 12709 flow. Second operand 8 states and 267 transitions. [2024-02-05 10:31:36,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 683 transitions, 14379 flow [2024-02-05 10:31:37,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 683 transitions, 14200 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-02-05 10:31:37,318 INFO L231 Difference]: Finished difference. Result has 428 places, 633 transitions, 12997 flow [2024-02-05 10:31:37,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12534, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12997, PETRI_PLACES=428, PETRI_TRANSITIONS=633} [2024-02-05 10:31:37,319 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 351 predicate places. [2024-02-05 10:31:37,319 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 633 transitions, 12997 flow [2024-02-05 10:31:37,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:37,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:37,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:31:37,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-02-05 10:31:37,319 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:31:37,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:37,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1191998181, now seen corresponding path program 19 times [2024-02-05 10:31:37,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:37,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347365178] [2024-02-05 10:31:37,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:37,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:37,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:37,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:37,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347365178] [2024-02-05 10:31:37,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347365178] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:37,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:37,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:31:37,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416372622] [2024-02-05 10:31:37,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:37,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:31:37,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:37,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:31:37,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:31:37,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:31:37,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 633 transitions, 12997 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:37,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:37,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:31:37,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:39,181 INFO L124 PetriNetUnfolderBase]: 3456/6434 cut-off events. [2024-02-05 10:31:39,181 INFO L125 PetriNetUnfolderBase]: For 160418/160665 co-relation queries the response was YES. [2024-02-05 10:31:39,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42249 conditions, 6434 events. 3456/6434 cut-off events. For 160418/160665 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 47401 event pairs, 412 based on Foata normal form. 83/6327 useless extension candidates. Maximal degree in co-relation 42124. Up to 3901 conditions per place. [2024-02-05 10:31:39,268 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 432 selfloop transitions, 224 changer transitions 0/696 dead transitions. [2024-02-05 10:31:39,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 696 transitions, 14880 flow [2024-02-05 10:31:39,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-05 10:31:39,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-05 10:31:39,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 318 transitions. [2024-02-05 10:31:39,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43561643835616437 [2024-02-05 10:31:39,270 INFO L175 Difference]: Start difference. First operand has 428 places, 633 transitions, 12997 flow. Second operand 10 states and 318 transitions. [2024-02-05 10:31:39,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 696 transitions, 14880 flow [2024-02-05 10:31:39,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 696 transitions, 14406 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-02-05 10:31:39,947 INFO L231 Difference]: Finished difference. Result has 431 places, 640 transitions, 13251 flow [2024-02-05 10:31:39,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12541, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13251, PETRI_PLACES=431, PETRI_TRANSITIONS=640} [2024-02-05 10:31:39,961 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 354 predicate places. [2024-02-05 10:31:39,961 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 640 transitions, 13251 flow [2024-02-05 10:31:39,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:39,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:39,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:31:39,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-02-05 10:31:39,961 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:31:39,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:39,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1054634955, now seen corresponding path program 20 times [2024-02-05 10:31:39,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:39,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999299020] [2024-02-05 10:31:39,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:39,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:40,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:40,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:40,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999299020] [2024-02-05 10:31:40,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999299020] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:40,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:40,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:31:40,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671525143] [2024-02-05 10:31:40,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:40,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:31:40,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:40,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:31:40,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:31:40,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:31:40,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 640 transitions, 13251 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:40,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:40,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:31:40,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:42,464 INFO L124 PetriNetUnfolderBase]: 3537/6540 cut-off events. [2024-02-05 10:31:42,464 INFO L125 PetriNetUnfolderBase]: For 168830/169027 co-relation queries the response was YES. [2024-02-05 10:31:42,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43602 conditions, 6540 events. 3537/6540 cut-off events. For 168830/169027 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 48022 event pairs, 400 based on Foata normal form. 82/6410 useless extension candidates. Maximal degree in co-relation 43476. Up to 3927 conditions per place. [2024-02-05 10:31:42,531 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 425 selfloop transitions, 233 changer transitions 0/698 dead transitions. [2024-02-05 10:31:42,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 698 transitions, 14979 flow [2024-02-05 10:31:42,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-05 10:31:42,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-05 10:31:42,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 340 transitions. [2024-02-05 10:31:42,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42341220423412207 [2024-02-05 10:31:42,536 INFO L175 Difference]: Start difference. First operand has 431 places, 640 transitions, 13251 flow. Second operand 11 states and 340 transitions. [2024-02-05 10:31:42,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 698 transitions, 14979 flow [2024-02-05 10:31:43,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 698 transitions, 14715 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-02-05 10:31:43,148 INFO L231 Difference]: Finished difference. Result has 437 places, 647 transitions, 13610 flow [2024-02-05 10:31:43,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12990, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=226, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13610, PETRI_PLACES=437, PETRI_TRANSITIONS=647} [2024-02-05 10:31:43,149 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 360 predicate places. [2024-02-05 10:31:43,163 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 647 transitions, 13610 flow [2024-02-05 10:31:43,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:43,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:43,163 INFO L208 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] [2024-02-05 10:31:43,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-02-05 10:31:43,163 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:31:43,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:43,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1305232400, now seen corresponding path program 1 times [2024-02-05 10:31:43,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:43,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593944087] [2024-02-05 10:31:43,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:43,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:43,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:43,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:43,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:43,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593944087] [2024-02-05 10:31:43,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593944087] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:43,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:43,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:31:43,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765218701] [2024-02-05 10:31:43,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:43,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:31:43,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:43,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:31:43,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:31:43,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:31:43,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 647 transitions, 13610 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:43,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:43,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:31:43,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:45,078 INFO L124 PetriNetUnfolderBase]: 3072/5839 cut-off events. [2024-02-05 10:31:45,079 INFO L125 PetriNetUnfolderBase]: For 147322/147597 co-relation queries the response was YES. [2024-02-05 10:31:45,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39492 conditions, 5839 events. 3072/5839 cut-off events. For 147322/147597 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 43954 event pairs, 629 based on Foata normal form. 9/5755 useless extension candidates. Maximal degree in co-relation 39365. Up to 3767 conditions per place. [2024-02-05 10:31:45,157 INFO L140 encePairwiseOnDemand]: 56/73 looper letters, 559 selfloop transitions, 154 changer transitions 7/744 dead transitions. [2024-02-05 10:31:45,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 744 transitions, 16104 flow [2024-02-05 10:31:45,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-05 10:31:45,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-05 10:31:45,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 370 transitions. [2024-02-05 10:31:45,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46077210460772106 [2024-02-05 10:31:45,158 INFO L175 Difference]: Start difference. First operand has 437 places, 647 transitions, 13610 flow. Second operand 11 states and 370 transitions. [2024-02-05 10:31:45,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 744 transitions, 16104 flow [2024-02-05 10:31:45,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 744 transitions, 15683 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-02-05 10:31:45,833 INFO L231 Difference]: Finished difference. Result has 445 places, 647 transitions, 13610 flow [2024-02-05 10:31:45,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=13201, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=647, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13610, PETRI_PLACES=445, PETRI_TRANSITIONS=647} [2024-02-05 10:31:45,833 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 368 predicate places. [2024-02-05 10:31:45,833 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 647 transitions, 13610 flow [2024-02-05 10:31:45,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:45,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:45,848 INFO L208 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] [2024-02-05 10:31:45,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-02-05 10:31:45,849 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:31:45,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:45,849 INFO L85 PathProgramCache]: Analyzing trace with hash -2082046030, now seen corresponding path program 1 times [2024-02-05 10:31:45,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:45,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107134625] [2024-02-05 10:31:45,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:45,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:45,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:46,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:46,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:46,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107134625] [2024-02-05 10:31:46,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107134625] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:46,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:46,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:31:46,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63403571] [2024-02-05 10:31:46,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:46,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:31:46,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:46,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:31:46,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:31:46,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:31:46,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 647 transitions, 13610 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:46,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:46,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:31:46,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:48,231 INFO L124 PetriNetUnfolderBase]: 3575/6801 cut-off events. [2024-02-05 10:31:48,231 INFO L125 PetriNetUnfolderBase]: For 179351/179677 co-relation queries the response was YES. [2024-02-05 10:31:48,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46222 conditions, 6801 events. 3575/6801 cut-off events. For 179351/179677 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 52052 event pairs, 877 based on Foata normal form. 107/6710 useless extension candidates. Maximal degree in co-relation 46091. Up to 5171 conditions per place. [2024-02-05 10:31:48,323 INFO L140 encePairwiseOnDemand]: 61/73 looper letters, 594 selfloop transitions, 68 changer transitions 5/707 dead transitions. [2024-02-05 10:31:48,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 707 transitions, 15535 flow [2024-02-05 10:31:48,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:31:48,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:31:48,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 286 transitions. [2024-02-05 10:31:48,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4353120243531202 [2024-02-05 10:31:48,325 INFO L175 Difference]: Start difference. First operand has 445 places, 647 transitions, 13610 flow. Second operand 9 states and 286 transitions. [2024-02-05 10:31:48,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 707 transitions, 15535 flow [2024-02-05 10:31:49,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 707 transitions, 15246 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-02-05 10:31:49,117 INFO L231 Difference]: Finished difference. Result has 446 places, 644 transitions, 13465 flow [2024-02-05 10:31:49,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=13343, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=647, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=579, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13465, PETRI_PLACES=446, PETRI_TRANSITIONS=644} [2024-02-05 10:31:49,118 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 369 predicate places. [2024-02-05 10:31:49,118 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 644 transitions, 13465 flow [2024-02-05 10:31:49,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:49,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:49,118 INFO L208 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] [2024-02-05 10:31:49,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-02-05 10:31:49,118 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:31:49,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:49,119 INFO L85 PathProgramCache]: Analyzing trace with hash 992808500, now seen corresponding path program 2 times [2024-02-05 10:31:49,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:49,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648176165] [2024-02-05 10:31:49,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:49,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:49,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:49,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:49,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648176165] [2024-02-05 10:31:49,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648176165] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:49,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:49,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:31:49,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827739346] [2024-02-05 10:31:49,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:49,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:31:49,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:49,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:31:49,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:31:49,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:31:49,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 644 transitions, 13465 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:49,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:49,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:31:49,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:51,189 INFO L124 PetriNetUnfolderBase]: 3145/6185 cut-off events. [2024-02-05 10:31:51,189 INFO L125 PetriNetUnfolderBase]: For 155534/155835 co-relation queries the response was YES. [2024-02-05 10:31:51,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41521 conditions, 6185 events. 3145/6185 cut-off events. For 155534/155835 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 48692 event pairs, 731 based on Foata normal form. 41/6171 useless extension candidates. Maximal degree in co-relation 41389. Up to 1826 conditions per place. [2024-02-05 10:31:51,279 INFO L140 encePairwiseOnDemand]: 61/73 looper letters, 589 selfloop transitions, 157 changer transitions 12/782 dead transitions. [2024-02-05 10:31:51,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 782 transitions, 16681 flow [2024-02-05 10:31:51,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-05 10:31:51,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-05 10:31:51,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 414 transitions. [2024-02-05 10:31:51,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4726027397260274 [2024-02-05 10:31:51,280 INFO L175 Difference]: Start difference. First operand has 446 places, 644 transitions, 13465 flow. Second operand 12 states and 414 transitions. [2024-02-05 10:31:51,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 782 transitions, 16681 flow [2024-02-05 10:31:52,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 782 transitions, 16555 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-02-05 10:31:52,118 INFO L231 Difference]: Finished difference. Result has 454 places, 634 transitions, 13640 flow [2024-02-05 10:31:52,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=13339, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=644, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=13640, PETRI_PLACES=454, PETRI_TRANSITIONS=634} [2024-02-05 10:31:52,119 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 377 predicate places. [2024-02-05 10:31:52,119 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 634 transitions, 13640 flow [2024-02-05 10:31:52,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:52,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:52,119 INFO L208 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] [2024-02-05 10:31:52,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-02-05 10:31:52,120 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:31:52,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:52,120 INFO L85 PathProgramCache]: Analyzing trace with hash 802610698, now seen corresponding path program 3 times [2024-02-05 10:31:52,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:52,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433941915] [2024-02-05 10:31:52,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:52,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:52,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:52,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:52,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:52,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433941915] [2024-02-05 10:31:52,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433941915] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:52,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:52,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:31:52,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117444293] [2024-02-05 10:31:52,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:52,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:31:52,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:52,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:31:52,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:31:52,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:31:52,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 634 transitions, 13640 flow. Second operand has 10 states, 10 states have (on average 22.8) internal successors, (228), 10 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:52,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:52,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:31:52,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:53,963 INFO L124 PetriNetUnfolderBase]: 3167/6372 cut-off events. [2024-02-05 10:31:53,963 INFO L125 PetriNetUnfolderBase]: For 170597/170901 co-relation queries the response was YES. [2024-02-05 10:31:54,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43341 conditions, 6372 events. 3167/6372 cut-off events. For 170597/170901 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 51357 event pairs, 375 based on Foata normal form. 17/6308 useless extension candidates. Maximal degree in co-relation 43205. Up to 3290 conditions per place. [2024-02-05 10:31:54,049 INFO L140 encePairwiseOnDemand]: 55/73 looper letters, 488 selfloop transitions, 182 changer transitions 6/700 dead transitions. [2024-02-05 10:31:54,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 700 transitions, 15760 flow [2024-02-05 10:31:54,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:31:54,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:31:54,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 307 transitions. [2024-02-05 10:31:54,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4672754946727549 [2024-02-05 10:31:54,050 INFO L175 Difference]: Start difference. First operand has 454 places, 634 transitions, 13640 flow. Second operand 9 states and 307 transitions. [2024-02-05 10:31:54,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 700 transitions, 15760 flow [2024-02-05 10:31:54,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 700 transitions, 15468 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-02-05 10:31:54,938 INFO L231 Difference]: Finished difference. Result has 457 places, 636 transitions, 13907 flow [2024-02-05 10:31:54,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=13360, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13907, PETRI_PLACES=457, PETRI_TRANSITIONS=636} [2024-02-05 10:31:54,939 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 380 predicate places. [2024-02-05 10:31:54,939 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 636 transitions, 13907 flow [2024-02-05 10:31:54,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.8) internal successors, (228), 10 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:54,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:54,940 INFO L208 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] [2024-02-05 10:31:54,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-02-05 10:31:54,940 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:31:54,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:54,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1353169066, now seen corresponding path program 4 times [2024-02-05 10:31:54,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:54,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943868080] [2024-02-05 10:31:54,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:54,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:55,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:55,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:55,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943868080] [2024-02-05 10:31:55,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943868080] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:55,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:55,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:31:55,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821776201] [2024-02-05 10:31:55,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:55,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:31:55,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:55,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:31:55,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:31:55,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:31:55,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 636 transitions, 13907 flow. Second operand has 10 states, 10 states have (on average 22.8) internal successors, (228), 10 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:55,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:55,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:31:55,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:57,062 INFO L124 PetriNetUnfolderBase]: 3154/6377 cut-off events. [2024-02-05 10:31:57,063 INFO L125 PetriNetUnfolderBase]: For 177732/178054 co-relation queries the response was YES. [2024-02-05 10:31:57,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45432 conditions, 6377 events. 3154/6377 cut-off events. For 177732/178054 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 51575 event pairs, 382 based on Foata normal form. 9/6305 useless extension candidates. Maximal degree in co-relation 45294. Up to 3282 conditions per place. [2024-02-05 10:31:57,137 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 494 selfloop transitions, 175 changer transitions 8/701 dead transitions. [2024-02-05 10:31:57,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 701 transitions, 16064 flow [2024-02-05 10:31:57,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:31:57,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:31:57,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 313 transitions. [2024-02-05 10:31:57,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4764079147640791 [2024-02-05 10:31:57,138 INFO L175 Difference]: Start difference. First operand has 457 places, 636 transitions, 13907 flow. Second operand 9 states and 313 transitions. [2024-02-05 10:31:57,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 701 transitions, 16064 flow [2024-02-05 10:31:57,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 701 transitions, 15674 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-02-05 10:31:57,999 INFO L231 Difference]: Finished difference. Result has 456 places, 630 transitions, 13827 flow [2024-02-05 10:31:57,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=13536, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=636, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13827, PETRI_PLACES=456, PETRI_TRANSITIONS=630} [2024-02-05 10:31:58,000 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 379 predicate places. [2024-02-05 10:31:58,000 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 630 transitions, 13827 flow [2024-02-05 10:31:58,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.8) internal successors, (228), 10 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:58,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:58,000 INFO L208 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] [2024-02-05 10:31:58,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-02-05 10:31:58,001 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:31:58,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:58,001 INFO L85 PathProgramCache]: Analyzing trace with hash 708010728, now seen corresponding path program 5 times [2024-02-05 10:31:58,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:58,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926424300] [2024-02-05 10:31:58,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:58,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:58,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:58,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:58,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:58,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926424300] [2024-02-05 10:31:58,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926424300] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:58,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:58,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:31:58,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606334884] [2024-02-05 10:31:58,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:58,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:31:58,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:58,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:31:58,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:31:58,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:31:58,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 630 transitions, 13827 flow. Second operand has 10 states, 10 states have (on average 22.8) internal successors, (228), 10 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:58,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:58,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:31:58,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:32:00,177 INFO L124 PetriNetUnfolderBase]: 3360/6940 cut-off events. [2024-02-05 10:32:00,177 INFO L125 PetriNetUnfolderBase]: For 202705/203060 co-relation queries the response was YES. [2024-02-05 10:32:00,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50590 conditions, 6940 events. 3360/6940 cut-off events. For 202705/203060 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 58084 event pairs, 422 based on Foata normal form. 9/6856 useless extension candidates. Maximal degree in co-relation 50455. Up to 2428 conditions per place. [2024-02-05 10:32:00,282 INFO L140 encePairwiseOnDemand]: 54/73 looper letters, 404 selfloop transitions, 314 changer transitions 12/754 dead transitions. [2024-02-05 10:32:00,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 754 transitions, 17522 flow [2024-02-05 10:32:00,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-05 10:32:00,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-05 10:32:00,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 348 transitions. [2024-02-05 10:32:00,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4767123287671233 [2024-02-05 10:32:00,284 INFO L175 Difference]: Start difference. First operand has 456 places, 630 transitions, 13827 flow. Second operand 10 states and 348 transitions. [2024-02-05 10:32:00,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 754 transitions, 17522 flow [2024-02-05 10:32:01,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 754 transitions, 17144 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-02-05 10:32:01,283 INFO L231 Difference]: Finished difference. Result has 459 places, 677 transitions, 15565 flow [2024-02-05 10:32:01,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=13462, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=260, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15565, PETRI_PLACES=459, PETRI_TRANSITIONS=677} [2024-02-05 10:32:01,284 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 382 predicate places. [2024-02-05 10:32:01,284 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 677 transitions, 15565 flow [2024-02-05 10:32:01,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.8) internal successors, (228), 10 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:01,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:32:01,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:32:01,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-02-05 10:32:01,284 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:32:01,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:32:01,285 INFO L85 PathProgramCache]: Analyzing trace with hash -644259220, now seen corresponding path program 6 times [2024-02-05 10:32:01,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:32:01,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273063784] [2024-02-05 10:32:01,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:32:01,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:32:01,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:32:01,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:32:01,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:32:01,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273063784] [2024-02-05 10:32:01,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273063784] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:32:01,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:32:01,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:32:01,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935267158] [2024-02-05 10:32:01,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:32:01,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:32:01,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:32:01,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:32:01,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:32:01,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:32:01,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 677 transitions, 15565 flow. Second operand has 10 states, 10 states have (on average 22.8) internal successors, (228), 10 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:01,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:32:01,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:32:01,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:32:03,447 INFO L124 PetriNetUnfolderBase]: 3359/7021 cut-off events. [2024-02-05 10:32:03,447 INFO L125 PetriNetUnfolderBase]: For 216814/217166 co-relation queries the response was YES. [2024-02-05 10:32:03,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53361 conditions, 7021 events. 3359/7021 cut-off events. For 216814/217166 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 59297 event pairs, 436 based on Foata normal form. 9/6937 useless extension candidates. Maximal degree in co-relation 53225. Up to 2796 conditions per place. [2024-02-05 10:32:03,553 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 421 selfloop transitions, 272 changer transitions 17/734 dead transitions. [2024-02-05 10:32:03,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 734 transitions, 17608 flow [2024-02-05 10:32:03,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:32:03,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:32:03,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 303 transitions. [2024-02-05 10:32:03,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4611872146118721 [2024-02-05 10:32:03,554 INFO L175 Difference]: Start difference. First operand has 459 places, 677 transitions, 15565 flow. Second operand 9 states and 303 transitions. [2024-02-05 10:32:03,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 734 transitions, 17608 flow [2024-02-05 10:32:04,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 734 transitions, 17306 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-02-05 10:32:04,761 INFO L231 Difference]: Finished difference. Result has 463 places, 667 transitions, 15953 flow [2024-02-05 10:32:04,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=15277, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=677, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=267, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15953, PETRI_PLACES=463, PETRI_TRANSITIONS=667} [2024-02-05 10:32:04,762 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 386 predicate places. [2024-02-05 10:32:04,762 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 667 transitions, 15953 flow [2024-02-05 10:32:04,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.8) internal successors, (228), 10 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:04,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:32:04,763 INFO L208 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] [2024-02-05 10:32:04,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-02-05 10:32:04,763 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:32:04,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:32:04,763 INFO L85 PathProgramCache]: Analyzing trace with hash 459543378, now seen corresponding path program 2 times [2024-02-05 10:32:04,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:32:04,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449165214] [2024-02-05 10:32:04,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:32:04,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:32:04,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:32:05,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:32:05,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:32:05,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449165214] [2024-02-05 10:32:05,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449165214] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:32:05,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:32:05,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:32:05,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813328529] [2024-02-05 10:32:05,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:32:05,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:32:05,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:32:05,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:32:05,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:32:05,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:32:05,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 667 transitions, 15953 flow. Second operand has 10 states, 10 states have (on average 22.8) internal successors, (228), 10 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:05,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:32:05,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:32:05,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:32:07,228 INFO L124 PetriNetUnfolderBase]: 3903/7964 cut-off events. [2024-02-05 10:32:07,229 INFO L125 PetriNetUnfolderBase]: For 270203/270608 co-relation queries the response was YES. [2024-02-05 10:32:07,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62840 conditions, 7964 events. 3903/7964 cut-off events. For 270203/270608 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 66698 event pairs, 1101 based on Foata normal form. 27/7715 useless extension candidates. Maximal degree in co-relation 62701. Up to 5735 conditions per place. [2024-02-05 10:32:07,331 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 520 selfloop transitions, 128 changer transitions 19/708 dead transitions. [2024-02-05 10:32:07,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 708 transitions, 17609 flow [2024-02-05 10:32:07,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:32:07,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:32:07,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 281 transitions. [2024-02-05 10:32:07,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4277016742770167 [2024-02-05 10:32:07,332 INFO L175 Difference]: Start difference. First operand has 463 places, 667 transitions, 15953 flow. Second operand 9 states and 281 transitions. [2024-02-05 10:32:07,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 708 transitions, 17609 flow [2024-02-05 10:32:08,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 708 transitions, 17065 flow, removed 24 selfloop flow, removed 18 redundant places. [2024-02-05 10:32:08,687 INFO L231 Difference]: Finished difference. Result has 454 places, 648 transitions, 15260 flow [2024-02-05 10:32:08,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=15417, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=667, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15260, PETRI_PLACES=454, PETRI_TRANSITIONS=648} [2024-02-05 10:32:08,688 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 377 predicate places. [2024-02-05 10:32:08,688 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 648 transitions, 15260 flow [2024-02-05 10:32:08,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.8) internal successors, (228), 10 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:08,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:32:08,688 INFO L208 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] [2024-02-05 10:32:08,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-02-05 10:32:08,689 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:32:08,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:32:08,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1629493230, now seen corresponding path program 7 times [2024-02-05 10:32:08,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:32:08,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861694972] [2024-02-05 10:32:08,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:32:08,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:32:08,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:32:08,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:32:08,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:32:08,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861694972] [2024-02-05 10:32:08,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861694972] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:32:08,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:32:08,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:32:08,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609295380] [2024-02-05 10:32:08,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:32:08,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:32:08,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:32:08,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:32:08,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:32:08,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:32:08,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 648 transitions, 15260 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:08,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:32:08,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:32:08,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:32:10,796 INFO L124 PetriNetUnfolderBase]: 3249/6748 cut-off events. [2024-02-05 10:32:10,797 INFO L125 PetriNetUnfolderBase]: For 208521/208849 co-relation queries the response was YES. [2024-02-05 10:32:10,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52259 conditions, 6748 events. 3249/6748 cut-off events. For 208521/208849 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 56151 event pairs, 935 based on Foata normal form. 21/6676 useless extension candidates. Maximal degree in co-relation 52125. Up to 4473 conditions per place. [2024-02-05 10:32:10,901 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 552 selfloop transitions, 147 changer transitions 14/737 dead transitions. [2024-02-05 10:32:10,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 737 transitions, 17881 flow [2024-02-05 10:32:10,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:32:10,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:32:10,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 316 transitions. [2024-02-05 10:32:10,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4809741248097412 [2024-02-05 10:32:10,903 INFO L175 Difference]: Start difference. First operand has 454 places, 648 transitions, 15260 flow. Second operand 9 states and 316 transitions. [2024-02-05 10:32:10,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 737 transitions, 17881 flow [2024-02-05 10:32:12,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 737 transitions, 17284 flow, removed 20 selfloop flow, removed 20 redundant places. [2024-02-05 10:32:12,086 INFO L231 Difference]: Finished difference. Result has 443 places, 636 transitions, 14802 flow [2024-02-05 10:32:12,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=14689, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=648, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14802, PETRI_PLACES=443, PETRI_TRANSITIONS=636} [2024-02-05 10:32:12,087 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 366 predicate places. [2024-02-05 10:32:12,087 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 636 transitions, 14802 flow [2024-02-05 10:32:12,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:12,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:32:12,087 INFO L208 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] [2024-02-05 10:32:12,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-02-05 10:32:12,087 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:32:12,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:32:12,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1730473514, now seen corresponding path program 8 times [2024-02-05 10:32:12,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:32:12,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408723628] [2024-02-05 10:32:12,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:32:12,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:32:12,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:32:12,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:32:12,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:32:12,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408723628] [2024-02-05 10:32:12,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408723628] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:32:12,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:32:12,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:32:12,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714375885] [2024-02-05 10:32:12,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:32:12,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:32:12,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:32:12,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:32:12,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:32:12,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:32:12,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 636 transitions, 14802 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:12,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:32:12,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:32:12,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:32:14,075 INFO L124 PetriNetUnfolderBase]: 3188/6609 cut-off events. [2024-02-05 10:32:14,075 INFO L125 PetriNetUnfolderBase]: For 192212/192540 co-relation queries the response was YES. [2024-02-05 10:32:14,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50347 conditions, 6609 events. 3188/6609 cut-off events. For 192212/192540 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 54696 event pairs, 907 based on Foata normal form. 21/6537 useless extension candidates. Maximal degree in co-relation 50217. Up to 4473 conditions per place. [2024-02-05 10:32:14,167 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 557 selfloop transitions, 139 changer transitions 5/725 dead transitions. [2024-02-05 10:32:14,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 725 transitions, 17298 flow [2024-02-05 10:32:14,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:32:14,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:32:14,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 313 transitions. [2024-02-05 10:32:14,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4764079147640791 [2024-02-05 10:32:14,168 INFO L175 Difference]: Start difference. First operand has 443 places, 636 transitions, 14802 flow. Second operand 9 states and 313 transitions. [2024-02-05 10:32:14,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 725 transitions, 17298 flow [2024-02-05 10:32:15,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 725 transitions, 16976 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-02-05 10:32:15,201 INFO L231 Difference]: Finished difference. Result has 442 places, 634 transitions, 14736 flow [2024-02-05 10:32:15,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=14480, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=636, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14736, PETRI_PLACES=442, PETRI_TRANSITIONS=634} [2024-02-05 10:32:15,202 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 365 predicate places. [2024-02-05 10:32:15,202 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 634 transitions, 14736 flow [2024-02-05 10:32:15,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:15,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:32:15,202 INFO L208 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] [2024-02-05 10:32:15,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-02-05 10:32:15,203 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:32:15,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:32:15,203 INFO L85 PathProgramCache]: Analyzing trace with hash 94499068, now seen corresponding path program 3 times [2024-02-05 10:32:15,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:32:15,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884134261] [2024-02-05 10:32:15,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:32:15,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:32:15,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:32:15,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:32:15,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:32:15,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884134261] [2024-02-05 10:32:15,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884134261] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:32:15,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:32:15,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:32:15,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248511166] [2024-02-05 10:32:15,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:32:15,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:32:15,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:32:15,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:32:15,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:32:15,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:32:15,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 634 transitions, 14736 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:15,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:32:15,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:32:15,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:32:17,528 INFO L124 PetriNetUnfolderBase]: 3761/7571 cut-off events. [2024-02-05 10:32:17,528 INFO L125 PetriNetUnfolderBase]: For 222759/223191 co-relation queries the response was YES. [2024-02-05 10:32:17,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57788 conditions, 7571 events. 3761/7571 cut-off events. For 222759/223191 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 61930 event pairs, 1039 based on Foata normal form. 43/7351 useless extension candidates. Maximal degree in co-relation 57659. Up to 4869 conditions per place. [2024-02-05 10:32:17,617 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 532 selfloop transitions, 119 changer transitions 11/703 dead transitions. [2024-02-05 10:32:17,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 703 transitions, 16752 flow [2024-02-05 10:32:17,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:32:17,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:32:17,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 296 transitions. [2024-02-05 10:32:17,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4505327245053272 [2024-02-05 10:32:17,619 INFO L175 Difference]: Start difference. First operand has 442 places, 634 transitions, 14736 flow. Second operand 9 states and 296 transitions. [2024-02-05 10:32:17,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 703 transitions, 16752 flow [2024-02-05 10:32:18,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 703 transitions, 16468 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-02-05 10:32:18,679 INFO L231 Difference]: Finished difference. Result has 443 places, 623 transitions, 14520 flow [2024-02-05 10:32:18,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=14452, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14520, PETRI_PLACES=443, PETRI_TRANSITIONS=623} [2024-02-05 10:32:18,679 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 366 predicate places. [2024-02-05 10:32:18,680 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 623 transitions, 14520 flow [2024-02-05 10:32:18,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:18,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:32:18,680 INFO L208 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] [2024-02-05 10:32:18,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-02-05 10:32:18,680 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:32:18,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:32:18,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1729902698, now seen corresponding path program 9 times [2024-02-05 10:32:18,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:32:18,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753265397] [2024-02-05 10:32:18,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:32:18,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:32:18,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:32:18,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:32:18,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:32:18,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753265397] [2024-02-05 10:32:18,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753265397] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:32:18,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:32:18,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:32:18,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220495802] [2024-02-05 10:32:18,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:32:18,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:32:18,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:32:18,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:32:18,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:32:18,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:32:18,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 623 transitions, 14520 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:18,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:32:18,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:32:18,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:32:20,733 INFO L124 PetriNetUnfolderBase]: 3123/6513 cut-off events. [2024-02-05 10:32:20,733 INFO L125 PetriNetUnfolderBase]: For 188197/188511 co-relation queries the response was YES. [2024-02-05 10:32:20,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49248 conditions, 6513 events. 3123/6513 cut-off events. For 188197/188511 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 53889 event pairs, 819 based on Foata normal form. 25/6459 useless extension candidates. Maximal degree in co-relation 49119. Up to 2495 conditions per place. [2024-02-05 10:32:20,819 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 462 selfloop transitions, 203 changer transitions 22/711 dead transitions. [2024-02-05 10:32:20,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 711 transitions, 17004 flow [2024-02-05 10:32:20,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-05 10:32:20,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-05 10:32:20,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 332 transitions. [2024-02-05 10:32:20,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4547945205479452 [2024-02-05 10:32:20,820 INFO L175 Difference]: Start difference. First operand has 443 places, 623 transitions, 14520 flow. Second operand 10 states and 332 transitions. [2024-02-05 10:32:20,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 711 transitions, 17004 flow [2024-02-05 10:32:21,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 711 transitions, 16738 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-02-05 10:32:21,843 INFO L231 Difference]: Finished difference. Result has 444 places, 602 transitions, 14257 flow [2024-02-05 10:32:21,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=14254, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14257, PETRI_PLACES=444, PETRI_TRANSITIONS=602} [2024-02-05 10:32:21,844 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 367 predicate places. [2024-02-05 10:32:21,844 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 602 transitions, 14257 flow [2024-02-05 10:32:21,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:21,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:32:21,845 INFO L208 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] [2024-02-05 10:32:21,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-02-05 10:32:21,845 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:32:21,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:32:21,845 INFO L85 PathProgramCache]: Analyzing trace with hash -475428944, now seen corresponding path program 4 times [2024-02-05 10:32:21,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:32:21,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889545094] [2024-02-05 10:32:21,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:32:21,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:32:21,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:32:22,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:32:22,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:32:22,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889545094] [2024-02-05 10:32:22,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889545094] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:32:22,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:32:22,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:32:22,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12793852] [2024-02-05 10:32:22,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:32:22,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:32:22,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:32:22,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:32:22,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:32:22,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:32:22,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 602 transitions, 14257 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:22,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:32:22,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:32:22,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:32:24,092 INFO L124 PetriNetUnfolderBase]: 3657/7371 cut-off events. [2024-02-05 10:32:24,092 INFO L125 PetriNetUnfolderBase]: For 222306/222724 co-relation queries the response was YES. [2024-02-05 10:32:24,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56530 conditions, 7371 events. 3657/7371 cut-off events. For 222306/222724 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 59933 event pairs, 1000 based on Foata normal form. 62/7183 useless extension candidates. Maximal degree in co-relation 56400. Up to 4808 conditions per place. [2024-02-05 10:32:24,188 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 502 selfloop transitions, 127 changer transitions 8/677 dead transitions. [2024-02-05 10:32:24,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 677 transitions, 16239 flow [2024-02-05 10:32:24,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-05 10:32:24,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-05 10:32:24,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 348 transitions. [2024-02-05 10:32:24,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43337484433374845 [2024-02-05 10:32:24,190 INFO L175 Difference]: Start difference. First operand has 444 places, 602 transitions, 14257 flow. Second operand 11 states and 348 transitions. [2024-02-05 10:32:24,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 677 transitions, 16239 flow [2024-02-05 10:32:25,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 677 transitions, 15653 flow, removed 8 selfloop flow, removed 16 redundant places. [2024-02-05 10:32:25,356 INFO L231 Difference]: Finished difference. Result has 439 places, 595 transitions, 13820 flow [2024-02-05 10:32:25,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=13671, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13820, PETRI_PLACES=439, PETRI_TRANSITIONS=595} [2024-02-05 10:32:25,357 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 362 predicate places. [2024-02-05 10:32:25,357 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 595 transitions, 13820 flow [2024-02-05 10:32:25,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:25,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:32:25,357 INFO L208 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] [2024-02-05 10:32:25,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-02-05 10:32:25,357 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:32:25,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:32:25,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1895581332, now seen corresponding path program 5 times [2024-02-05 10:32:25,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:32:25,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72939580] [2024-02-05 10:32:25,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:32:25,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:32:25,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:32:25,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:32:25,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:32:25,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72939580] [2024-02-05 10:32:25,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72939580] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:32:25,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:32:25,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:32:25,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512815858] [2024-02-05 10:32:25,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:32:25,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:32:25,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:32:25,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:32:25,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:32:25,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:32:25,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 595 transitions, 13820 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:25,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:32:25,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:32:25,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:32:27,681 INFO L124 PetriNetUnfolderBase]: 3593/7248 cut-off events. [2024-02-05 10:32:27,681 INFO L125 PetriNetUnfolderBase]: For 210655/211052 co-relation queries the response was YES. [2024-02-05 10:32:27,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54896 conditions, 7248 events. 3593/7248 cut-off events. For 210655/211052 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 58741 event pairs, 990 based on Foata normal form. 48/7046 useless extension candidates. Maximal degree in co-relation 54768. Up to 4808 conditions per place. [2024-02-05 10:32:27,765 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 486 selfloop transitions, 117 changer transitions 24/666 dead transitions. [2024-02-05 10:32:27,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 666 transitions, 15647 flow [2024-02-05 10:32:27,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-05 10:32:27,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-05 10:32:27,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 368 transitions. [2024-02-05 10:32:27,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4200913242009132 [2024-02-05 10:32:27,766 INFO L175 Difference]: Start difference. First operand has 439 places, 595 transitions, 13820 flow. Second operand 12 states and 368 transitions. [2024-02-05 10:32:27,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 666 transitions, 15647 flow [2024-02-05 10:32:28,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 666 transitions, 15377 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-02-05 10:32:28,731 INFO L231 Difference]: Finished difference. Result has 441 places, 572 transitions, 13355 flow [2024-02-05 10:32:28,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=13550, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=13355, PETRI_PLACES=441, PETRI_TRANSITIONS=572} [2024-02-05 10:32:28,732 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 364 predicate places. [2024-02-05 10:32:28,732 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 572 transitions, 13355 flow [2024-02-05 10:32:28,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:28,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:32:28,732 INFO L208 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] [2024-02-05 10:32:28,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-02-05 10:32:28,733 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:32:28,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:32:28,733 INFO L85 PathProgramCache]: Analyzing trace with hash -920760780, now seen corresponding path program 10 times [2024-02-05 10:32:28,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:32:28,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080914415] [2024-02-05 10:32:28,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:32:28,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:32:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:32:28,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:32:28,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:32:28,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080914415] [2024-02-05 10:32:28,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080914415] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:32:28,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:32:28,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:32:28,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117739959] [2024-02-05 10:32:28,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:32:28,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:32:28,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:32:28,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:32:28,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:32:29,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:32:29,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 572 transitions, 13355 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:29,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:32:29,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:32:29,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:32:30,704 INFO L124 PetriNetUnfolderBase]: 2967/6183 cut-off events. [2024-02-05 10:32:30,704 INFO L125 PetriNetUnfolderBase]: For 175356/175652 co-relation queries the response was YES. [2024-02-05 10:32:30,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46360 conditions, 6183 events. 2967/6183 cut-off events. For 175356/175652 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 50605 event pairs, 767 based on Foata normal form. 21/6125 useless extension candidates. Maximal degree in co-relation 46232. Up to 3068 conditions per place. [2024-02-05 10:32:30,785 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 501 selfloop transitions, 127 changer transitions 8/660 dead transitions. [2024-02-05 10:32:30,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 660 transitions, 15691 flow [2024-02-05 10:32:30,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-05 10:32:30,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-05 10:32:30,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 330 transitions. [2024-02-05 10:32:30,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520547945205479 [2024-02-05 10:32:30,786 INFO L175 Difference]: Start difference. First operand has 441 places, 572 transitions, 13355 flow. Second operand 10 states and 330 transitions. [2024-02-05 10:32:30,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 660 transitions, 15691 flow [2024-02-05 10:32:31,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 660 transitions, 15392 flow, removed 4 selfloop flow, removed 21 redundant places. [2024-02-05 10:32:31,656 INFO L231 Difference]: Finished difference. Result has 430 places, 566 transitions, 13235 flow [2024-02-05 10:32:31,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=13062, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13235, PETRI_PLACES=430, PETRI_TRANSITIONS=566} [2024-02-05 10:32:31,657 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 353 predicate places. [2024-02-05 10:32:31,657 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 566 transitions, 13235 flow [2024-02-05 10:32:31,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:31,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:32:31,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:32:31,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-02-05 10:32:31,657 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:32:31,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:32:31,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1659206028, now seen corresponding path program 6 times [2024-02-05 10:32:31,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:32:31,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936620371] [2024-02-05 10:32:31,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:32:31,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:32:31,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:32:31,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:32:31,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:32:31,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936620371] [2024-02-05 10:32:31,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936620371] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:32:31,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:32:31,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:32:31,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458087061] [2024-02-05 10:32:31,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:32:31,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:32:31,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:32:31,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:32:31,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:32:31,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:32:31,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 566 transitions, 13235 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:31,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:32:31,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:32:31,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:32:33,832 INFO L124 PetriNetUnfolderBase]: 3561/7288 cut-off events. [2024-02-05 10:32:33,832 INFO L125 PetriNetUnfolderBase]: For 210986/211455 co-relation queries the response was YES. [2024-02-05 10:32:33,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54679 conditions, 7288 events. 3561/7288 cut-off events. For 210986/211455 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 59804 event pairs, 1074 based on Foata normal form. 65/7123 useless extension candidates. Maximal degree in co-relation 54556. Up to 3170 conditions per place. [2024-02-05 10:32:33,952 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 532 selfloop transitions, 93 changer transitions 11/674 dead transitions. [2024-02-05 10:32:33,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 674 transitions, 15694 flow [2024-02-05 10:32:33,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-05 10:32:33,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-05 10:32:33,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 333 transitions. [2024-02-05 10:32:33,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45616438356164385 [2024-02-05 10:32:33,953 INFO L175 Difference]: Start difference. First operand has 430 places, 566 transitions, 13235 flow. Second operand 10 states and 333 transitions. [2024-02-05 10:32:33,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 674 transitions, 15694 flow [2024-02-05 10:32:35,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 674 transitions, 15432 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-02-05 10:32:35,110 INFO L231 Difference]: Finished difference. Result has 432 places, 555 transitions, 12934 flow [2024-02-05 10:32:35,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12977, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12934, PETRI_PLACES=432, PETRI_TRANSITIONS=555} [2024-02-05 10:32:35,111 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 355 predicate places. [2024-02-05 10:32:35,111 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 555 transitions, 12934 flow [2024-02-05 10:32:35,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:35,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:32:35,112 INFO L208 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] [2024-02-05 10:32:35,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-02-05 10:32:35,112 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:32:35,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:32:35,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1761055624, now seen corresponding path program 7 times [2024-02-05 10:32:35,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:32:35,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745133073] [2024-02-05 10:32:35,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:32:35,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:32:35,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:32:35,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:32:35,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:32:35,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745133073] [2024-02-05 10:32:35,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745133073] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:32:35,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:32:35,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:32:35,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776975116] [2024-02-05 10:32:35,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:32:35,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:32:35,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:32:35,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:32:35,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:32:35,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:32:35,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 555 transitions, 12934 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:35,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:32:35,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:32:35,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:32:37,463 INFO L124 PetriNetUnfolderBase]: 3506/7212 cut-off events. [2024-02-05 10:32:37,463 INFO L125 PetriNetUnfolderBase]: For 208535/209012 co-relation queries the response was YES. [2024-02-05 10:32:37,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54110 conditions, 7212 events. 3506/7212 cut-off events. For 208535/209012 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 59345 event pairs, 1030 based on Foata normal form. 84/7074 useless extension candidates. Maximal degree in co-relation 53987. Up to 3170 conditions per place. [2024-02-05 10:32:37,551 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 548 selfloop transitions, 101 changer transitions 8/695 dead transitions. [2024-02-05 10:32:37,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 695 transitions, 15838 flow [2024-02-05 10:32:37,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-05 10:32:37,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-05 10:32:37,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 397 transitions. [2024-02-05 10:32:37,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4531963470319635 [2024-02-05 10:32:37,552 INFO L175 Difference]: Start difference. First operand has 432 places, 555 transitions, 12934 flow. Second operand 12 states and 397 transitions. [2024-02-05 10:32:37,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 695 transitions, 15838 flow [2024-02-05 10:32:38,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 695 transitions, 15652 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-02-05 10:32:38,558 INFO L231 Difference]: Finished difference. Result has 437 places, 548 transitions, 12823 flow [2024-02-05 10:32:38,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12748, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12823, PETRI_PLACES=437, PETRI_TRANSITIONS=548} [2024-02-05 10:32:38,559 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 360 predicate places. [2024-02-05 10:32:38,559 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 548 transitions, 12823 flow [2024-02-05 10:32:38,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:38,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:32:38,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:32:38,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-02-05 10:32:38,559 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:32:38,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:32:38,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1761976324, now seen corresponding path program 8 times [2024-02-05 10:32:38,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:32:38,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698272831] [2024-02-05 10:32:38,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:32:38,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:32:38,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:32:38,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:32:38,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:32:38,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698272831] [2024-02-05 10:32:38,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698272831] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:32:38,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:32:38,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:32:38,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992332323] [2024-02-05 10:32:38,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:32:38,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:32:38,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:32:38,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:32:38,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:32:38,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:32:38,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 548 transitions, 12823 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:38,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:32:38,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:32:38,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:32:40,817 INFO L124 PetriNetUnfolderBase]: 3442/7089 cut-off events. [2024-02-05 10:32:40,818 INFO L125 PetriNetUnfolderBase]: For 207684/208148 co-relation queries the response was YES. [2024-02-05 10:32:40,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53134 conditions, 7089 events. 3442/7089 cut-off events. For 207684/208148 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 58153 event pairs, 1020 based on Foata normal form. 86/6957 useless extension candidates. Maximal degree in co-relation 53010. Up to 3170 conditions per place. [2024-02-05 10:32:40,924 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 534 selfloop transitions, 99 changer transitions 13/684 dead transitions. [2024-02-05 10:32:40,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 684 transitions, 15564 flow [2024-02-05 10:32:40,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-05 10:32:40,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-05 10:32:40,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 417 transitions. [2024-02-05 10:32:40,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43940990516332984 [2024-02-05 10:32:40,926 INFO L175 Difference]: Start difference. First operand has 437 places, 548 transitions, 12823 flow. Second operand 13 states and 417 transitions. [2024-02-05 10:32:40,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 684 transitions, 15564 flow [2024-02-05 10:32:42,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 684 transitions, 15364 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-02-05 10:32:42,071 INFO L231 Difference]: Finished difference. Result has 441 places, 536 transitions, 12625 flow [2024-02-05 10:32:42,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12623, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12625, PETRI_PLACES=441, PETRI_TRANSITIONS=536} [2024-02-05 10:32:42,072 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 364 predicate places. [2024-02-05 10:32:42,072 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 536 transitions, 12625 flow [2024-02-05 10:32:42,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:42,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:32:42,072 INFO L208 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] [2024-02-05 10:32:42,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-02-05 10:32:42,073 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:32:42,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:32:42,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1135679304, now seen corresponding path program 9 times [2024-02-05 10:32:42,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:32:42,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718667737] [2024-02-05 10:32:42,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:32:42,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:32:42,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:32:42,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:32:42,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:32:42,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718667737] [2024-02-05 10:32:42,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718667737] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:32:42,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:32:42,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:32:42,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873658169] [2024-02-05 10:32:42,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:32:42,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:32:42,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:32:42,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:32:42,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:32:42,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:32:42,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 536 transitions, 12625 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:42,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:32:42,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:32:42,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:32:44,146 INFO L124 PetriNetUnfolderBase]: 3424/7091 cut-off events. [2024-02-05 10:32:44,146 INFO L125 PetriNetUnfolderBase]: For 207374/207778 co-relation queries the response was YES. [2024-02-05 10:32:44,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53200 conditions, 7091 events. 3424/7091 cut-off events. For 207374/207778 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 58424 event pairs, 1120 based on Foata normal form. 61/6920 useless extension candidates. Maximal degree in co-relation 53075. Up to 5222 conditions per place. [2024-02-05 10:32:44,244 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 509 selfloop transitions, 55 changer transitions 11/613 dead transitions. [2024-02-05 10:32:44,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 613 transitions, 14613 flow [2024-02-05 10:32:44,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:32:44,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:32:44,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 292 transitions. [2024-02-05 10:32:44,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-02-05 10:32:44,246 INFO L175 Difference]: Start difference. First operand has 441 places, 536 transitions, 12625 flow. Second operand 9 states and 292 transitions. [2024-02-05 10:32:44,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 613 transitions, 14613 flow [2024-02-05 10:32:45,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 613 transitions, 14399 flow, removed 0 selfloop flow, removed 13 redundant places. [2024-02-05 10:32:45,346 INFO L231 Difference]: Finished difference. Result has 437 places, 527 transitions, 12341 flow [2024-02-05 10:32:45,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12411, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12341, PETRI_PLACES=437, PETRI_TRANSITIONS=527} [2024-02-05 10:32:45,347 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 360 predicate places. [2024-02-05 10:32:45,347 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 527 transitions, 12341 flow [2024-02-05 10:32:45,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:45,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:32:45,347 INFO L208 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] [2024-02-05 10:32:45,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-02-05 10:32:45,347 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:32:45,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:32:45,348 INFO L85 PathProgramCache]: Analyzing trace with hash 627094416, now seen corresponding path program 10 times [2024-02-05 10:32:45,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:32:45,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323386914] [2024-02-05 10:32:45,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:32:45,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:32:45,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:32:45,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:32:45,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:32:45,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323386914] [2024-02-05 10:32:45,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323386914] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:32:45,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:32:45,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:32:45,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960889540] [2024-02-05 10:32:45,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:32:45,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:32:45,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:32:45,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:32:45,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:32:45,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:32:45,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 527 transitions, 12341 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:45,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:32:45,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:32:45,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:32:47,616 INFO L124 PetriNetUnfolderBase]: 3390/7000 cut-off events. [2024-02-05 10:32:47,616 INFO L125 PetriNetUnfolderBase]: For 198802/199208 co-relation queries the response was YES. [2024-02-05 10:32:47,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52280 conditions, 7000 events. 3390/7000 cut-off events. For 198802/199208 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 57388 event pairs, 1107 based on Foata normal form. 61/6829 useless extension candidates. Maximal degree in co-relation 52154. Up to 5222 conditions per place. [2024-02-05 10:32:47,690 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 503 selfloop transitions, 52 changer transitions 12/605 dead transitions. [2024-02-05 10:32:47,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 605 transitions, 14230 flow [2024-02-05 10:32:47,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-05 10:32:47,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-05 10:32:47,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 339 transitions. [2024-02-05 10:32:47,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42216687422166876 [2024-02-05 10:32:47,691 INFO L175 Difference]: Start difference. First operand has 437 places, 527 transitions, 12341 flow. Second operand 11 states and 339 transitions. [2024-02-05 10:32:47,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 605 transitions, 14230 flow [2024-02-05 10:32:48,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 605 transitions, 14118 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-02-05 10:32:48,637 INFO L231 Difference]: Finished difference. Result has 440 places, 517 transitions, 12150 flow [2024-02-05 10:32:48,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12229, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12150, PETRI_PLACES=440, PETRI_TRANSITIONS=517} [2024-02-05 10:32:48,638 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 363 predicate places. [2024-02-05 10:32:48,638 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 517 transitions, 12150 flow [2024-02-05 10:32:48,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:48,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:32:48,639 INFO L208 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] [2024-02-05 10:32:48,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-02-05 10:32:48,639 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:32:48,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:32:48,639 INFO L85 PathProgramCache]: Analyzing trace with hash -189085948, now seen corresponding path program 11 times [2024-02-05 10:32:48,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:32:48,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782903738] [2024-02-05 10:32:48,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:32:48,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:32:48,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:32:48,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:32:48,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:32:48,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782903738] [2024-02-05 10:32:48,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782903738] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:32:48,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:32:48,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:32:48,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729692092] [2024-02-05 10:32:48,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:32:48,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:32:48,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:32:48,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:32:48,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:32:48,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:32:48,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 517 transitions, 12150 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:48,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:32:48,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:32:48,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:32:50,548 INFO L124 PetriNetUnfolderBase]: 2830/6030 cut-off events. [2024-02-05 10:32:50,549 INFO L125 PetriNetUnfolderBase]: For 169782/170057 co-relation queries the response was YES. [2024-02-05 10:32:50,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43997 conditions, 6030 events. 2830/6030 cut-off events. For 169782/170057 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 49770 event pairs, 881 based on Foata normal form. 95/6067 useless extension candidates. Maximal degree in co-relation 43870. Up to 3095 conditions per place. [2024-02-05 10:32:50,631 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 389 selfloop transitions, 113 changer transitions 46/572 dead transitions. [2024-02-05 10:32:50,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 572 transitions, 13916 flow [2024-02-05 10:32:50,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:32:50,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:32:50,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 278 transitions. [2024-02-05 10:32:50,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4231354642313546 [2024-02-05 10:32:50,633 INFO L175 Difference]: Start difference. First operand has 440 places, 517 transitions, 12150 flow. Second operand 9 states and 278 transitions. [2024-02-05 10:32:50,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 572 transitions, 13916 flow [2024-02-05 10:32:51,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 572 transitions, 13519 flow, removed 0 selfloop flow, removed 29 redundant places. [2024-02-05 10:32:51,485 INFO L231 Difference]: Finished difference. Result has 416 places, 469 transitions, 10965 flow [2024-02-05 10:32:51,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11651, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10965, PETRI_PLACES=416, PETRI_TRANSITIONS=469} [2024-02-05 10:32:51,485 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 339 predicate places. [2024-02-05 10:32:51,486 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 469 transitions, 10965 flow [2024-02-05 10:32:51,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:51,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:32:51,486 INFO L208 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] [2024-02-05 10:32:51,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-02-05 10:32:51,486 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:32:51,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:32:51,487 INFO L85 PathProgramCache]: Analyzing trace with hash -961957312, now seen corresponding path program 11 times [2024-02-05 10:32:51,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:32:51,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922199484] [2024-02-05 10:32:51,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:32:51,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:32:51,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:32:51,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:32:51,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:32:51,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922199484] [2024-02-05 10:32:51,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922199484] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:32:51,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:32:51,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:32:51,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987502072] [2024-02-05 10:32:51,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:32:51,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:32:51,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:32:51,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:32:51,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:32:51,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:32:51,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 469 transitions, 10965 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:51,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:32:51,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:32:51,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:32:53,252 INFO L124 PetriNetUnfolderBase]: 3114/6467 cut-off events. [2024-02-05 10:32:53,253 INFO L125 PetriNetUnfolderBase]: For 161619/161933 co-relation queries the response was YES. [2024-02-05 10:32:53,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47007 conditions, 6467 events. 3114/6467 cut-off events. For 161619/161933 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 52146 event pairs, 796 based on Foata normal form. 26/6291 useless extension candidates. Maximal degree in co-relation 46899. Up to 3782 conditions per place. [2024-02-05 10:32:53,336 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 352 selfloop transitions, 118 changer transitions 13/517 dead transitions. [2024-02-05 10:32:53,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 517 transitions, 12337 flow [2024-02-05 10:32:53,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:32:53,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:32:53,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 261 transitions. [2024-02-05 10:32:53,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4469178082191781 [2024-02-05 10:32:53,337 INFO L175 Difference]: Start difference. First operand has 416 places, 469 transitions, 10965 flow. Second operand 8 states and 261 transitions. [2024-02-05 10:32:53,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 517 transitions, 12337 flow [2024-02-05 10:32:54,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 517 transitions, 12129 flow, removed 0 selfloop flow, removed 13 redundant places. [2024-02-05 10:32:54,101 INFO L231 Difference]: Finished difference. Result has 411 places, 456 transitions, 10764 flow [2024-02-05 10:32:54,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10757, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10764, PETRI_PLACES=411, PETRI_TRANSITIONS=456} [2024-02-05 10:32:54,102 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 334 predicate places. [2024-02-05 10:32:54,102 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 456 transitions, 10764 flow [2024-02-05 10:32:54,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:54,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:32:54,102 INFO L208 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] [2024-02-05 10:32:54,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-02-05 10:32:54,102 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:32:54,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:32:54,103 INFO L85 PathProgramCache]: Analyzing trace with hash 874066804, now seen corresponding path program 12 times [2024-02-05 10:32:54,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:32:54,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068157445] [2024-02-05 10:32:54,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:32:54,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:32:54,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:32:54,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:32:54,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:32:54,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068157445] [2024-02-05 10:32:54,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068157445] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:32:54,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:32:54,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:32:54,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214217450] [2024-02-05 10:32:54,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:32:54,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:32:54,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:32:54,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:32:54,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:32:54,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:32:54,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 456 transitions, 10764 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:54,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:32:54,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:32:54,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:32:55,851 INFO L124 PetriNetUnfolderBase]: 3067/6356 cut-off events. [2024-02-05 10:32:55,851 INFO L125 PetriNetUnfolderBase]: For 159208/159553 co-relation queries the response was YES. [2024-02-05 10:32:55,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46599 conditions, 6356 events. 3067/6356 cut-off events. For 159208/159553 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 50848 event pairs, 697 based on Foata normal form. 88/6271 useless extension candidates. Maximal degree in co-relation 46490. Up to 2307 conditions per place. [2024-02-05 10:32:55,943 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 354 selfloop transitions, 140 changer transitions 8/536 dead transitions. [2024-02-05 10:32:55,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 536 transitions, 12599 flow [2024-02-05 10:32:55,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-05 10:32:55,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-05 10:32:55,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 325 transitions. [2024-02-05 10:32:55,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4452054794520548 [2024-02-05 10:32:55,945 INFO L175 Difference]: Start difference. First operand has 411 places, 456 transitions, 10764 flow. Second operand 10 states and 325 transitions. [2024-02-05 10:32:55,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 536 transitions, 12599 flow [2024-02-05 10:32:56,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 536 transitions, 12090 flow, removed 18 selfloop flow, removed 15 redundant places. [2024-02-05 10:32:56,722 INFO L231 Difference]: Finished difference. Result has 406 places, 449 transitions, 10464 flow [2024-02-05 10:32:56,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10275, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10464, PETRI_PLACES=406, PETRI_TRANSITIONS=449} [2024-02-05 10:32:56,723 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 329 predicate places. [2024-02-05 10:32:56,723 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 449 transitions, 10464 flow [2024-02-05 10:32:56,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:56,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:32:56,723 INFO L208 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] [2024-02-05 10:32:56,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-02-05 10:32:56,723 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:32:56,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:32:56,724 INFO L85 PathProgramCache]: Analyzing trace with hash -115475604, now seen corresponding path program 13 times [2024-02-05 10:32:56,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:32:56,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784839919] [2024-02-05 10:32:56,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:32:56,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:32:56,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:32:56,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:32:56,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:32:56,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784839919] [2024-02-05 10:32:56,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784839919] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:32:56,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:32:56,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:32:56,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605612769] [2024-02-05 10:32:56,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:32:56,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:32:56,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:32:56,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:32:56,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:32:57,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:32:57,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 449 transitions, 10464 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:57,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:32:57,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:32:57,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:32:58,500 INFO L124 PetriNetUnfolderBase]: 3046/6398 cut-off events. [2024-02-05 10:32:58,500 INFO L125 PetriNetUnfolderBase]: For 153544/153896 co-relation queries the response was YES. [2024-02-05 10:32:58,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46373 conditions, 6398 events. 3046/6398 cut-off events. For 153544/153896 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 51894 event pairs, 1018 based on Foata normal form. 68/6278 useless extension candidates. Maximal degree in co-relation 46267. Up to 4102 conditions per place. [2024-02-05 10:32:58,572 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 392 selfloop transitions, 73 changer transitions 11/510 dead transitions. [2024-02-05 10:32:58,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 510 transitions, 12041 flow [2024-02-05 10:32:58,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:32:58,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:32:58,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 254 transitions. [2024-02-05 10:32:58,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4349315068493151 [2024-02-05 10:32:58,574 INFO L175 Difference]: Start difference. First operand has 406 places, 449 transitions, 10464 flow. Second operand 8 states and 254 transitions. [2024-02-05 10:32:58,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 510 transitions, 12041 flow [2024-02-05 10:32:59,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 510 transitions, 11636 flow, removed 18 selfloop flow, removed 12 redundant places. [2024-02-05 10:32:59,331 INFO L231 Difference]: Finished difference. Result has 402 places, 440 transitions, 10056 flow [2024-02-05 10:32:59,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10071, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10056, PETRI_PLACES=402, PETRI_TRANSITIONS=440} [2024-02-05 10:32:59,331 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 325 predicate places. [2024-02-05 10:32:59,331 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 440 transitions, 10056 flow [2024-02-05 10:32:59,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:59,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:32:59,332 INFO L208 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] [2024-02-05 10:32:59,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-02-05 10:32:59,332 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:32:59,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:32:59,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1946928380, now seen corresponding path program 14 times [2024-02-05 10:32:59,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:32:59,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624554829] [2024-02-05 10:32:59,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:32:59,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:32:59,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:32:59,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:32:59,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:32:59,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624554829] [2024-02-05 10:32:59,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624554829] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:32:59,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:32:59,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:32:59,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111946789] [2024-02-05 10:32:59,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:32:59,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:32:59,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:32:59,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:32:59,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:32:59,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:32:59,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 440 transitions, 10056 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:32:59,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:32:59,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:32:59,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:33:01,026 INFO L124 PetriNetUnfolderBase]: 2957/6264 cut-off events. [2024-02-05 10:33:01,027 INFO L125 PetriNetUnfolderBase]: For 137482/137797 co-relation queries the response was YES. [2024-02-05 10:33:01,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44428 conditions, 6264 events. 2957/6264 cut-off events. For 137482/137797 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 50783 event pairs, 739 based on Foata normal form. 50/6137 useless extension candidates. Maximal degree in co-relation 44325. Up to 2370 conditions per place. [2024-02-05 10:33:01,105 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 329 selfloop transitions, 139 changer transitions 15/516 dead transitions. [2024-02-05 10:33:01,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 516 transitions, 11678 flow [2024-02-05 10:33:01,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-05 10:33:01,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-05 10:33:01,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 345 transitions. [2024-02-05 10:33:01,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42963885429638854 [2024-02-05 10:33:01,107 INFO L175 Difference]: Start difference. First operand has 402 places, 440 transitions, 10056 flow. Second operand 11 states and 345 transitions. [2024-02-05 10:33:01,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 516 transitions, 11678 flow [2024-02-05 10:33:01,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 516 transitions, 11514 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-02-05 10:33:01,794 INFO L231 Difference]: Finished difference. Result has 405 places, 426 transitions, 9961 flow [2024-02-05 10:33:01,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9892, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9961, PETRI_PLACES=405, PETRI_TRANSITIONS=426} [2024-02-05 10:33:01,795 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 328 predicate places. [2024-02-05 10:33:01,795 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 426 transitions, 9961 flow [2024-02-05 10:33:01,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:33:01,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:33:01,795 INFO L208 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] [2024-02-05 10:33:01,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-02-05 10:33:01,795 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:33:01,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:33:01,796 INFO L85 PathProgramCache]: Analyzing trace with hash -114554904, now seen corresponding path program 15 times [2024-02-05 10:33:01,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:33:01,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372307569] [2024-02-05 10:33:01,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:33:01,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:33:01,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:33:02,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:33:02,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:33:02,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372307569] [2024-02-05 10:33:02,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372307569] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:33:02,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:33:02,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:33:02,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928111406] [2024-02-05 10:33:02,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:33:02,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:33:02,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:33:02,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:33:02,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:33:02,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:33:02,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 426 transitions, 9961 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:33:02,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:33:02,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:33:02,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:33:03,487 INFO L124 PetriNetUnfolderBase]: 2946/6255 cut-off events. [2024-02-05 10:33:03,487 INFO L125 PetriNetUnfolderBase]: For 139233/139574 co-relation queries the response was YES. [2024-02-05 10:33:03,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44976 conditions, 6255 events. 2946/6255 cut-off events. For 139233/139574 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 50877 event pairs, 1018 based on Foata normal form. 72/6148 useless extension candidates. Maximal degree in co-relation 44873. Up to 3996 conditions per place. [2024-02-05 10:33:03,560 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 392 selfloop transitions, 56 changer transitions 15/496 dead transitions. [2024-02-05 10:33:03,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 496 transitions, 11574 flow [2024-02-05 10:33:03,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:33:03,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:33:03,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 262 transitions. [2024-02-05 10:33:03,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486301369863014 [2024-02-05 10:33:03,562 INFO L175 Difference]: Start difference. First operand has 405 places, 426 transitions, 9961 flow. Second operand 8 states and 262 transitions. [2024-02-05 10:33:03,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 496 transitions, 11574 flow [2024-02-05 10:33:04,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 496 transitions, 11166 flow, removed 15 selfloop flow, removed 21 redundant places. [2024-02-05 10:33:04,190 INFO L231 Difference]: Finished difference. Result has 392 places, 414 transitions, 9468 flow [2024-02-05 10:33:04,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9569, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9468, PETRI_PLACES=392, PETRI_TRANSITIONS=414} [2024-02-05 10:33:04,191 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 315 predicate places. [2024-02-05 10:33:04,191 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 414 transitions, 9468 flow [2024-02-05 10:33:04,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:33:04,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:33:04,191 INFO L208 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] [2024-02-05 10:33:04,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-02-05 10:33:04,192 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:33:04,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:33:04,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1527640186, now seen corresponding path program 16 times [2024-02-05 10:33:04,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:33:04,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158429369] [2024-02-05 10:33:04,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:33:04,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:33:04,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:33:04,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:33:04,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:33:04,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158429369] [2024-02-05 10:33:04,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158429369] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:33:04,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:33:04,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:33:04,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843765800] [2024-02-05 10:33:04,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:33:04,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:33:04,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:33:04,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:33:04,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:33:04,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:33:04,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 414 transitions, 9468 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:33:04,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:33:04,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:33:04,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:33:05,822 INFO L124 PetriNetUnfolderBase]: 2882/6147 cut-off events. [2024-02-05 10:33:05,822 INFO L125 PetriNetUnfolderBase]: For 123685/123982 co-relation queries the response was YES. [2024-02-05 10:33:05,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43203 conditions, 6147 events. 2882/6147 cut-off events. For 123685/123982 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 49892 event pairs, 809 based on Foata normal form. 21/5991 useless extension candidates. Maximal degree in co-relation 43105. Up to 2676 conditions per place. [2024-02-05 10:33:05,899 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 282 selfloop transitions, 137 changer transitions 13/463 dead transitions. [2024-02-05 10:33:05,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 463 transitions, 10753 flow [2024-02-05 10:33:05,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:33:05,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:33:05,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 234 transitions. [2024-02-05 10:33:05,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45792563600782776 [2024-02-05 10:33:05,900 INFO L175 Difference]: Start difference. First operand has 392 places, 414 transitions, 9468 flow. Second operand 7 states and 234 transitions. [2024-02-05 10:33:05,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 463 transitions, 10753 flow [2024-02-05 10:33:06,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 463 transitions, 10621 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-02-05 10:33:06,492 INFO L231 Difference]: Finished difference. Result has 390 places, 402 transitions, 9474 flow [2024-02-05 10:33:06,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9336, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9474, PETRI_PLACES=390, PETRI_TRANSITIONS=402} [2024-02-05 10:33:06,493 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 313 predicate places. [2024-02-05 10:33:06,493 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 402 transitions, 9474 flow [2024-02-05 10:33:06,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:33:06,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:33:06,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:33:06,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-02-05 10:33:06,494 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:33:06,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:33:06,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1330602984, now seen corresponding path program 17 times [2024-02-05 10:33:06,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:33:06,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610533113] [2024-02-05 10:33:06,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:33:06,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:33:06,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:33:06,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:33:06,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:33:06,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610533113] [2024-02-05 10:33:06,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610533113] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:33:06,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:33:06,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:33:06,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061849372] [2024-02-05 10:33:06,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:33:06,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:33:06,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:33:06,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:33:06,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:33:06,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:33:06,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 402 transitions, 9474 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:33:06,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:33:06,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:33:06,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:33:08,093 INFO L124 PetriNetUnfolderBase]: 2818/6002 cut-off events. [2024-02-05 10:33:08,094 INFO L125 PetriNetUnfolderBase]: For 128996/129321 co-relation queries the response was YES. [2024-02-05 10:33:08,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42661 conditions, 6002 events. 2818/6002 cut-off events. For 128996/129321 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 48421 event pairs, 974 based on Foata normal form. 64/5897 useless extension candidates. Maximal degree in co-relation 42563. Up to 3874 conditions per place. [2024-02-05 10:33:08,161 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 376 selfloop transitions, 48 changer transitions 17/472 dead transitions. [2024-02-05 10:33:08,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 472 transitions, 10950 flow [2024-02-05 10:33:08,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-05 10:33:08,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-05 10:33:08,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 308 transitions. [2024-02-05 10:33:08,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42191780821917807 [2024-02-05 10:33:08,162 INFO L175 Difference]: Start difference. First operand has 390 places, 402 transitions, 9474 flow. Second operand 10 states and 308 transitions. [2024-02-05 10:33:08,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 472 transitions, 10950 flow [2024-02-05 10:33:08,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 472 transitions, 10334 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-02-05 10:33:08,715 INFO L231 Difference]: Finished difference. Result has 390 places, 387 transitions, 8715 flow [2024-02-05 10:33:08,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8862, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8715, PETRI_PLACES=390, PETRI_TRANSITIONS=387} [2024-02-05 10:33:08,716 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 313 predicate places. [2024-02-05 10:33:08,716 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 387 transitions, 8715 flow [2024-02-05 10:33:08,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:33:08,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:33:08,717 INFO L208 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] [2024-02-05 10:33:08,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-02-05 10:33:08,717 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:33:08,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:33:08,717 INFO L85 PathProgramCache]: Analyzing trace with hash -318383308, now seen corresponding path program 18 times [2024-02-05 10:33:08,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:33:08,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013936676] [2024-02-05 10:33:08,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:33:08,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:33:08,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:33:09,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:33:09,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:33:09,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013936676] [2024-02-05 10:33:09,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013936676] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:33:09,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:33:09,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:33:09,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380413741] [2024-02-05 10:33:09,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:33:09,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:33:09,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:33:09,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:33:09,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:33:09,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:33:09,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 387 transitions, 8715 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:33:09,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:33:09,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:33:09,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:33:10,312 INFO L124 PetriNetUnfolderBase]: 2792/6016 cut-off events. [2024-02-05 10:33:10,312 INFO L125 PetriNetUnfolderBase]: For 110770/111050 co-relation queries the response was YES. [2024-02-05 10:33:10,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40791 conditions, 6016 events. 2792/6016 cut-off events. For 110770/111050 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 48912 event pairs, 814 based on Foata normal form. 28/5875 useless extension candidates. Maximal degree in co-relation 40696. Up to 2676 conditions per place. [2024-02-05 10:33:10,379 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 297 selfloop transitions, 101 changer transitions 17/444 dead transitions. [2024-02-05 10:33:10,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 444 transitions, 10035 flow [2024-02-05 10:33:10,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:33:10,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:33:10,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 238 transitions. [2024-02-05 10:33:10,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4657534246575342 [2024-02-05 10:33:10,381 INFO L175 Difference]: Start difference. First operand has 390 places, 387 transitions, 8715 flow. Second operand 7 states and 238 transitions. [2024-02-05 10:33:10,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 444 transitions, 10035 flow [2024-02-05 10:33:10,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 444 transitions, 9883 flow, removed 2 selfloop flow, removed 15 redundant places. [2024-02-05 10:33:10,883 INFO L231 Difference]: Finished difference. Result has 382 places, 371 transitions, 8545 flow [2024-02-05 10:33:10,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8563, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8545, PETRI_PLACES=382, PETRI_TRANSITIONS=371} [2024-02-05 10:33:10,883 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 305 predicate places. [2024-02-05 10:33:10,883 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 371 transitions, 8545 flow [2024-02-05 10:33:10,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:33:10,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:33:10,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:33:10,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-02-05 10:33:10,884 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:33:10,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:33:10,884 INFO L85 PathProgramCache]: Analyzing trace with hash 709406192, now seen corresponding path program 19 times [2024-02-05 10:33:10,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:33:10,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404972405] [2024-02-05 10:33:10,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:33:10,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:33:10,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:33:11,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:33:11,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:33:11,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404972405] [2024-02-05 10:33:11,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404972405] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:33:11,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:33:11,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:33:11,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644671450] [2024-02-05 10:33:11,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:33:11,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:33:11,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:33:11,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:33:11,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:33:11,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:33:11,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 371 transitions, 8545 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:33:11,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:33:11,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:33:11,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:33:12,421 INFO L124 PetriNetUnfolderBase]: 2762/6006 cut-off events. [2024-02-05 10:33:12,421 INFO L125 PetriNetUnfolderBase]: For 111315/111591 co-relation queries the response was YES. [2024-02-05 10:33:12,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40764 conditions, 6006 events. 2762/6006 cut-off events. For 111315/111591 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 49125 event pairs, 836 based on Foata normal form. 28/5870 useless extension candidates. Maximal degree in co-relation 40670. Up to 2676 conditions per place. [2024-02-05 10:33:12,483 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 298 selfloop transitions, 94 changer transitions 16/437 dead transitions. [2024-02-05 10:33:12,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 437 transitions, 9915 flow [2024-02-05 10:33:12,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:33:12,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:33:12,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 289 transitions. [2024-02-05 10:33:12,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398782343987823 [2024-02-05 10:33:12,484 INFO L175 Difference]: Start difference. First operand has 382 places, 371 transitions, 8545 flow. Second operand 9 states and 289 transitions. [2024-02-05 10:33:12,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 437 transitions, 9915 flow [2024-02-05 10:33:12,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 437 transitions, 9598 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-02-05 10:33:12,941 INFO L231 Difference]: Finished difference. Result has 379 places, 357 transitions, 8211 flow [2024-02-05 10:33:12,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8228, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8211, PETRI_PLACES=379, PETRI_TRANSITIONS=357} [2024-02-05 10:33:12,942 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 302 predicate places. [2024-02-05 10:33:12,942 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 357 transitions, 8211 flow [2024-02-05 10:33:12,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:33:12,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:33:12,942 INFO L208 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] [2024-02-05 10:33:12,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-02-05 10:33:12,942 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:33:12,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:33:12,943 INFO L85 PathProgramCache]: Analyzing trace with hash 572042966, now seen corresponding path program 20 times [2024-02-05 10:33:12,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:33:12,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940441923] [2024-02-05 10:33:12,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:33:12,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:33:12,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:33:13,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:33:13,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:33:13,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940441923] [2024-02-05 10:33:13,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940441923] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:33:13,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:33:13,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:33:13,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040264247] [2024-02-05 10:33:13,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:33:13,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:33:13,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:33:13,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:33:13,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:33:13,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:33:13,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 357 transitions, 8211 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:33:13,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:33:13,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:33:13,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:33:14,508 INFO L124 PetriNetUnfolderBase]: 2733/5908 cut-off events. [2024-02-05 10:33:14,508 INFO L125 PetriNetUnfolderBase]: For 107764/107997 co-relation queries the response was YES. [2024-02-05 10:33:14,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39800 conditions, 5908 events. 2733/5908 cut-off events. For 107764/107997 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 47895 event pairs, 760 based on Foata normal form. 20/5754 useless extension candidates. Maximal degree in co-relation 39709. Up to 2676 conditions per place. [2024-02-05 10:33:14,575 INFO L140 encePairwiseOnDemand]: 59/73 looper letters, 269 selfloop transitions, 96 changer transitions 23/416 dead transitions. [2024-02-05 10:33:14,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 416 transitions, 9412 flow [2024-02-05 10:33:14,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-05 10:33:14,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-05 10:33:14,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 310 transitions. [2024-02-05 10:33:14,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4246575342465753 [2024-02-05 10:33:14,577 INFO L175 Difference]: Start difference. First operand has 379 places, 357 transitions, 8211 flow. Second operand 10 states and 310 transitions. [2024-02-05 10:33:14,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 416 transitions, 9412 flow [2024-02-05 10:33:15,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 416 transitions, 8850 flow, removed 2 selfloop flow, removed 29 redundant places. [2024-02-05 10:33:15,030 INFO L231 Difference]: Finished difference. Result has 357 places, 332 transitions, 7502 flow [2024-02-05 10:33:15,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7583, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7502, PETRI_PLACES=357, PETRI_TRANSITIONS=332} [2024-02-05 10:33:15,030 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 280 predicate places. [2024-02-05 10:33:15,030 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 332 transitions, 7502 flow [2024-02-05 10:33:15,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:33:15,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:33:15,031 INFO L208 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] [2024-02-05 10:33:15,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-02-05 10:33:15,031 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:33:15,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:33:15,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1264401824, now seen corresponding path program 1 times [2024-02-05 10:33:15,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:33:15,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583333530] [2024-02-05 10:33:15,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:33:15,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:33:15,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-05 10:33:15,064 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-05 10:33:15,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-05 10:33:15,128 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-05 10:33:15,128 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-05 10:33:15,129 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (59 of 60 remaining) [2024-02-05 10:33:15,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (58 of 60 remaining) [2024-02-05 10:33:15,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (57 of 60 remaining) [2024-02-05 10:33:15,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (56 of 60 remaining) [2024-02-05 10:33:15,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (55 of 60 remaining) [2024-02-05 10:33:15,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT (54 of 60 remaining) [2024-02-05 10:33:15,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err5ASSERT_VIOLATIONWITNESS_INVARIANT (53 of 60 remaining) [2024-02-05 10:33:15,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err6ASSERT_VIOLATIONWITNESS_INVARIANT (52 of 60 remaining) [2024-02-05 10:33:15,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT (51 of 60 remaining) [2024-02-05 10:33:15,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err8ASSERT_VIOLATIONWITNESS_INVARIANT (50 of 60 remaining) [2024-02-05 10:33:15,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 60 remaining) [2024-02-05 10:33:15,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err10ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 60 remaining) [2024-02-05 10:33:15,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err11ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 60 remaining) [2024-02-05 10:33:15,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 60 remaining) [2024-02-05 10:33:15,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 60 remaining) [2024-02-05 10:33:15,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 60 remaining) [2024-02-05 10:33:15,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 60 remaining) [2024-02-05 10:33:15,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 60 remaining) [2024-02-05 10:33:15,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 60 remaining) [2024-02-05 10:33:15,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 60 remaining) [2024-02-05 10:33:15,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 60 remaining) [2024-02-05 10:33:15,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 60 remaining) [2024-02-05 10:33:15,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 60 remaining) [2024-02-05 10:33:15,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 60 remaining) [2024-02-05 10:33:15,134 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 60 remaining) [2024-02-05 10:33:15,134 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 60 remaining) [2024-02-05 10:33:15,134 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 60 remaining) [2024-02-05 10:33:15,134 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 60 remaining) [2024-02-05 10:33:15,134 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 60 remaining) [2024-02-05 10:33:15,134 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 60 remaining) [2024-02-05 10:33:15,134 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 60 remaining) [2024-02-05 10:33:15,134 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 60 remaining) [2024-02-05 10:33:15,134 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 60 remaining) [2024-02-05 10:33:15,135 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (26 of 60 remaining) [2024-02-05 10:33:15,135 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 60 remaining) [2024-02-05 10:33:15,135 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 60 remaining) [2024-02-05 10:33:15,135 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 60 remaining) [2024-02-05 10:33:15,135 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 60 remaining) [2024-02-05 10:33:15,135 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 60 remaining) [2024-02-05 10:33:15,135 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 60 remaining) [2024-02-05 10:33:15,135 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 60 remaining) [2024-02-05 10:33:15,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err5ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 60 remaining) [2024-02-05 10:33:15,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err6ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 60 remaining) [2024-02-05 10:33:15,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 60 remaining) [2024-02-05 10:33:15,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err8ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 60 remaining) [2024-02-05 10:33:15,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 60 remaining) [2024-02-05 10:33:15,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err10ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 60 remaining) [2024-02-05 10:33:15,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err11ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 60 remaining) [2024-02-05 10:33:15,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 60 remaining) [2024-02-05 10:33:15,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 60 remaining) [2024-02-05 10:33:15,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 60 remaining) [2024-02-05 10:33:15,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 60 remaining) [2024-02-05 10:33:15,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 60 remaining) [2024-02-05 10:33:15,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 60 remaining) [2024-02-05 10:33:15,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 60 remaining) [2024-02-05 10:33:15,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 60 remaining) [2024-02-05 10:33:15,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 60 remaining) [2024-02-05 10:33:15,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 60 remaining) [2024-02-05 10:33:15,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 60 remaining) [2024-02-05 10:33:15,138 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 60 remaining) [2024-02-05 10:33:15,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-02-05 10:33:15,138 INFO L445 BasicCegarLoop]: Path program histogram: [20, 20, 11, 11, 10, 10, 10, 8, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:33:15,143 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-05 10:33:15,143 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-05 10:33:15,178 INFO L503 ceAbstractionStarter]: Automizer considered 33 witness invariants [2024-02-05 10:33:15,178 INFO L504 ceAbstractionStarter]: WitnessConsidered=33 [2024-02-05 10:33:15,179 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.02 10:33:15 BasicIcfg [2024-02-05 10:33:15,179 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-05 10:33:15,180 INFO L158 Benchmark]: Toolchain (without parser) took 304649.27ms. Allocated memory was 148.9MB in the beginning and 3.5GB in the end (delta: 3.4GB). Free memory was 97.8MB in the beginning and 2.0GB in the end (delta: -1.9GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2024-02-05 10:33:15,180 INFO L158 Benchmark]: Witness Parser took 0.18ms. Allocated memory is still 107.0MB. Free memory is still 79.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-05 10:33:15,180 INFO L158 Benchmark]: CDTParser took 0.07ms. Allocated memory is still 107.0MB. Free memory is still 70.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-05 10:33:15,180 INFO L158 Benchmark]: CACSL2BoogieTranslator took 890.73ms. Allocated memory is still 148.9MB. Free memory was 97.8MB in the beginning and 86.6MB in the end (delta: 11.2MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-02-05 10:33:15,180 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.13ms. Allocated memory is still 148.9MB. Free memory was 86.6MB in the beginning and 84.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-05 10:33:15,180 INFO L158 Benchmark]: Boogie Preprocessor took 47.78ms. Allocated memory is still 148.9MB. Free memory was 84.4MB in the beginning and 81.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-05 10:33:15,181 INFO L158 Benchmark]: RCFGBuilder took 808.25ms. Allocated memory was 148.9MB in the beginning and 180.4MB in the end (delta: 31.5MB). Free memory was 81.3MB in the beginning and 106.5MB in the end (delta: -25.2MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2024-02-05 10:33:15,181 INFO L158 Benchmark]: TraceAbstraction took 302829.95ms. Allocated memory was 180.4MB in the beginning and 3.5GB in the end (delta: 3.3GB). Free memory was 105.5MB in the beginning and 2.0GB in the end (delta: -1.9GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2024-02-05 10:33:15,182 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.18ms. Allocated memory is still 107.0MB. Free memory is still 79.5MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.07ms. Allocated memory is still 107.0MB. Free memory is still 70.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 890.73ms. Allocated memory is still 148.9MB. Free memory was 97.8MB in the beginning and 86.6MB in the end (delta: 11.2MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.13ms. Allocated memory is still 148.9MB. Free memory was 86.6MB in the beginning and 84.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.78ms. Allocated memory is still 148.9MB. Free memory was 84.4MB in the beginning and 81.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 808.25ms. Allocated memory was 148.9MB in the beginning and 180.4MB in the end (delta: 31.5MB). Free memory was 81.3MB in the beginning and 106.5MB in the end (delta: -25.2MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * TraceAbstraction took 302829.95ms. Allocated memory was 180.4MB in the beginning and 3.5GB in the end (delta: 3.3GB). Free memory was 105.5MB in the beginning and 2.0GB in the end (delta: -1.9GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 771]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L708] 0 int __unbuffered_cnt = 0; [L710] 0 int __unbuffered_p1_EAX = 0; [L712] 0 int __unbuffered_p1_EBX = 0; [L713] 0 _Bool main$tmp_guard0; [L714] 0 _Bool main$tmp_guard1; [L716] 0 int x = 0; [L718] 0 int y = 0; [L760] 0 pthread_t t2317; VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, main$tmp_guard0=0, main$tmp_guard1=0, t2317={5:0}, x=0, y=0] [L761] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_cnt],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]]]]] [L761] FCALL, FORK 0 pthread_create(&t2317, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t2317={5:0}, x=0, y=0] [L762] 0 pthread_t t2318; [L763] FCALL, FORK 0 pthread_create(&t2318, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t2317={5:0}, t2318={3:0}, x=0, y=0] [L721] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0] [L722] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EBX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] [L722] 1 y = 1 [L723] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EBX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=1] [L736] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=1] [L724] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=1] [L737] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EBX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] [L737] 2 __unbuffered_p1_EAX = x [L738] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EBX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=1] [L739] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=1] [L725] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EBX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] [L725] 1 x = 1 [L726] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EBX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L727] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L728] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EBX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L740] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EBX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] [L740] 2 __unbuffered_p1_EBX = y [L741] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EBX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L742] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L743] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EBX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L744] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L745] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EBX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] [L745] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L746] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EBX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[__unbuffered_cnt]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=1, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L729] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=1, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L730] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EBX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] [L730] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L731] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EBX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[__unbuffered_cnt]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=2, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L765] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EBX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] [L765] 0 main$tmp_guard0 = __unbuffered_cnt == 2 [L766] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EBX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=2, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2317={5:0}, t2318={3:0}, x=1, y=1] [L767] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L767] RET 0 assume_abort_if_not(main$tmp_guard0) [L769] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EBX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=2, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2317={5:0}, t2318={3:0}, x=1, y=1] [L771] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EBX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EBX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=2, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2317={5:0}, t2318={3:0}, x=1, y=1] - UnprovableResult [Line: 721]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 722]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 723]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 724]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 725]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 726]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 727]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 728]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 729]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 730]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 731]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 732]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 736]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 737]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 738]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 739]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 740]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 741]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 742]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 743]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 745]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 746]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 747]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 761]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 765]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 766]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 769]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 772]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 763]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 761]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 121 locations, 60 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 302.7s, OverallIterations: 187, TraceHistogramMax: 1, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 260.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16453 SdHoareTripleChecker+Valid, 35.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15058 mSDsluCounter, 3457 SdHoareTripleChecker+Invalid, 29.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2894 mSDsCounter, 2545 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 54471 IncrementalHoareTripleChecker+Invalid, 57016 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2545 mSolverCounterUnsat, 563 mSDtfsCounter, 54471 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1567 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1547 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1451 ImplicationChecksByTransitivity, 16.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15953occurred in iteration=162, InterpolantAutomatonStates: 1548, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 39.8s InterpolantComputationTime, 3531 NumberOfCodeBlocks, 3531 NumberOfCodeBlocksAsserted, 187 NumberOfCheckSat, 3317 ConstructedInterpolants, 0 QuantifiedInterpolants, 84424 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 186 InterpolantComputations, 186 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-02-05 10:33:15,215 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