./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/safe033_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fced0e87 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/safe033_tso.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.extract-columns-fced0e8-m [2024-01-31 16:04:20,921 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:04:20,997 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:04:21,002 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:04:21,003 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:04:21,028 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:04:21,029 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:04:21,029 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:04:21,030 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:04:21,033 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:04:21,033 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:04:21,033 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:04:21,034 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:04:21,035 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:04:21,035 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:04:21,036 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:04:21,036 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:04:21,036 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:04:21,036 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:04:21,036 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:04:21,037 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:04:21,037 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:04:21,037 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:04:21,037 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:04:21,038 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:04:21,038 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:04:21,038 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:04:21,038 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:04:21,039 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:04:21,039 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:04:21,040 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:04:21,040 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:04:21,040 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:04:21,040 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:04:21,040 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:04:21,041 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:04:21,041 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:04:21,041 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:04:21,041 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:04:21,041 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:04:21,042 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:04:21,042 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:04:21,042 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:04:21,042 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:04:21,275 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:04:21,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:04:21,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:04:21,296 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:04:21,298 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:04:21,300 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/safe033_tso.yml/witness.yml [2024-01-31 16:04:21,501 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:04:21,502 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:04:21,504 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.i [2024-01-31 16:04:22,488 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:04:22,698 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:04:22,699 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe033_tso.i [2024-01-31 16:04:22,726 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87394970a/6955713126c04c79a1854b6e481f1840/FLAGa01262ee9 [2024-01-31 16:04:22,737 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87394970a/6955713126c04c79a1854b6e481f1840 [2024-01-31 16:04:22,738 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:04:22,739 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:04:22,740 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:04:22,741 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:04:22,745 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:04:22,746 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:04:21" (1/2) ... [2024-01-31 16:04:22,746 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53ea9092 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:04:22, skipping insertion in model container [2024-01-31 16:04:22,747 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:04:21" (1/2) ... [2024-01-31 16:04:22,748 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@12703bf2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:04:22, skipping insertion in model container [2024-01-31 16:04:22,748 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:04:22" (2/2) ... [2024-01-31 16:04:22,748 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53ea9092 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:04:22, skipping insertion in model container [2024-01-31 16:04:22,748 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:04:22" (2/2) ... [2024-01-31 16:04:22,749 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:04:23,024 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 16:04:23,025 INFO L98 nessWitnessExtractor]: Location invariant before [L731-L731] (((((((((((((0 <= __unbuffered_p0_EAX) && (0 <= x)) && (0 <= y)) && (1 <= __unbuffered_cnt)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:04:23,025 INFO L98 nessWitnessExtractor]: Location invariant before [L724-L724] (unsigned long )arg == 0UL [2024-01-31 16:04:23,026 INFO L98 nessWitnessExtractor]: Location invariant before [L722-L722] (unsigned long )arg == 0UL [2024-01-31 16:04:23,026 INFO L98 nessWitnessExtractor]: Location invariant before [L741-L741] ((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y == 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1) [2024-01-31 16:04:23,026 INFO L98 nessWitnessExtractor]: Location invariant before [L729-L729] (unsigned long )arg == 0UL [2024-01-31 16:04:23,026 INFO L98 nessWitnessExtractor]: Location invariant before [L743-L743] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:04:23,026 INFO L98 nessWitnessExtractor]: Location invariant before [L742-L742] (unsigned long )arg == 0UL [2024-01-31 16:04:23,026 INFO L98 nessWitnessExtractor]: Location invariant before [L720-L720] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:04:23,027 INFO L98 nessWitnessExtractor]: Location invariant before [L736-L736] (unsigned long )arg == 0UL [2024-01-31 16:04:23,027 INFO L98 nessWitnessExtractor]: Location invariant before [L747-L747] (unsigned long )arg == 0UL [2024-01-31 16:04:23,027 INFO L98 nessWitnessExtractor]: Location invariant before [L18-L18] expression == 0 [2024-01-31 16:04:23,027 INFO L98 nessWitnessExtractor]: Location invariant before [L739-L739] (unsigned long )arg == 0UL [2024-01-31 16:04:23,027 INFO L98 nessWitnessExtractor]: Location invariant before [L18-L18] ((0 <= expression) && (expression <= 1)) && (expression == 0 || expression == 1) [2024-01-31 16:04:23,027 INFO L98 nessWitnessExtractor]: Location invariant before [L726-L726] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:04:23,027 INFO L98 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 1 [2024-01-31 16:04:23,028 INFO L98 nessWitnessExtractor]: Location invariant before [L730-L730] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:04:23,028 INFO L98 nessWitnessExtractor]: Location invariant before [L769-L769] ((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:04:23,028 INFO L98 nessWitnessExtractor]: Location invariant before [L771-L771] (((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y == 2)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1) [2024-01-31 16:04:23,028 INFO L98 nessWitnessExtractor]: Location invariant before [L727-L727] (unsigned long )arg == 0UL [2024-01-31 16:04:23,028 INFO L98 nessWitnessExtractor]: Location invariant before [L732-L732] (unsigned long )arg == 0UL [2024-01-31 16:04:23,028 INFO L98 nessWitnessExtractor]: Location invariant before [L723-L723] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:04:23,029 INFO L98 nessWitnessExtractor]: Location invariant before [L725-L725] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:04:23,029 INFO L98 nessWitnessExtractor]: Location invariant before [L737-L737] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:04:23,029 INFO L98 nessWitnessExtractor]: Location invariant before [L745-L745] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:04:23,029 INFO L98 nessWitnessExtractor]: Location invariant before [L765-L765] ((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:04:23,030 INFO L98 nessWitnessExtractor]: Location invariant before [L18-L18] expression == 1 [2024-01-31 16:04:23,030 INFO L98 nessWitnessExtractor]: Location invariant before [L721-L721] ((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y == 2)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1) [2024-01-31 16:04:23,030 INFO L98 nessWitnessExtractor]: Location invariant before [L728-L728] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:04:23,030 INFO L98 nessWitnessExtractor]: Location invariant before [L772-L772] ((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:04:23,030 INFO L98 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 0 [2024-01-31 16:04:23,030 INFO L98 nessWitnessExtractor]: Location invariant before [L744-L744] (unsigned long )arg == 0UL [2024-01-31 16:04:23,031 INFO L98 nessWitnessExtractor]: Location invariant before [L719-L719] (unsigned long )arg == 0UL [2024-01-31 16:04:23,031 INFO L98 nessWitnessExtractor]: Location invariant before [L746-L746] (((((((((((((0 <= __unbuffered_p0_EAX) && (0 <= x)) && (0 <= y)) && (1 <= __unbuffered_cnt)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:04:23,031 INFO L98 nessWitnessExtractor]: Location invariant before [L738-L738] (((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (y <= 2)) && (y <= 127)) && (x == 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:04:23,031 INFO L98 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 1 [2024-01-31 16:04:23,032 INFO L98 nessWitnessExtractor]: Location invariant before [L766-L766] ((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:04:23,032 INFO L98 nessWitnessExtractor]: Location invariant before [L761-L761] (((((__unbuffered_cnt == 0) && (__unbuffered_p0_EAX == 0)) && (main$tmp_guard0 == (_Bool)0)) && (main$tmp_guard1 == (_Bool)0)) && (x == 0)) && (y == 0) [2024-01-31 16:04:23,032 INFO L98 nessWitnessExtractor]: Location invariant before [L740-L740] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (x <= 1)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:04:23,076 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:04:23,225 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/safe033_tso.i[945,958] [2024-01-31 16:04:23,391 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:04:23,400 INFO L204 MainTranslator]: Completed pre-run Start Parsing Local [2024-01-31 16:04:23,430 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/safe033_tso.i[945,958] Start Parsing Local Start Parsing Local [2024-01-31 16:04:23,432 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 Start Parsing Local Start Parsing Local [2024-01-31 16:04:23,507 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:04:23,534 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:04:23,535 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:04:23 WrapperNode [2024-01-31 16:04:23,535 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:04:23,535 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:04:23,535 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:04:23,536 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:04:23,542 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:04:23" (1/1) ... [2024-01-31 16:04:23,556 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:04:23" (1/1) ... [2024-01-31 16:04:23,596 INFO L138 Inliner]: procedures = 175, calls = 42, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2024-01-31 16:04:23,596 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:04:23,597 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:04:23,597 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:04:23,597 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:04:23,606 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:04:23" (1/1) ... [2024-01-31 16:04:23,606 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:04:23" (1/1) ... [2024-01-31 16:04:23,616 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:04:23" (1/1) ... [2024-01-31 16:04:23,630 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-01-31 16:04:23,630 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:04:23" (1/1) ... [2024-01-31 16:04:23,631 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:04:23" (1/1) ... [2024-01-31 16:04:23,637 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:04:23" (1/1) ... [2024-01-31 16:04:23,639 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:04:23" (1/1) ... [2024-01-31 16:04:23,641 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:04:23" (1/1) ... [2024-01-31 16:04:23,642 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:04:23" (1/1) ... [2024-01-31 16:04:23,644 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:04:23,645 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:04:23,645 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:04:23,645 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:04:23,646 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:04:23" (1/1) ... [2024-01-31 16:04:23,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:04:23,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:04:23,686 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-31 16:04:23,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-31 16:04:23,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:04:23,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:04:23,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:04:23,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 16:04:23,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:04:23,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:04:23,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:04:23,718 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-31 16:04:23,718 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-31 16:04:23,718 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-31 16:04:23,718 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-31 16:04:23,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:04:23,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:04:23,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:04:23,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 16:04:23,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:04:23,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:04:23,719 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 16:04:23,819 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:04:23,820 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:04:24,185 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:04:24,185 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:04:24,405 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:04:24,406 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-31 16:04:24,407 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:04:24 BoogieIcfgContainer [2024-01-31 16:04:24,407 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:04:24,410 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:04:24,410 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:04:24,413 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:04:24,413 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:04:21" (1/4) ... [2024-01-31 16:04:24,414 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef3cb9a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:04:24, skipping insertion in model container [2024-01-31 16:04:24,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:04:22" (2/4) ... [2024-01-31 16:04:24,415 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef3cb9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:04:24, skipping insertion in model container [2024-01-31 16:04:24,415 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:04:23" (3/4) ... [2024-01-31 16:04:24,416 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef3cb9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:04:24, skipping insertion in model container [2024-01-31 16:04:24,416 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:04:24" (4/4) ... [2024-01-31 16:04:24,417 INFO L112 eAbstractionObserver]: Analyzing ICFG safe033_tso.i [2024-01-31 16:04:24,432 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:04:24,433 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2024-01-31 16:04:24,433 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:04:24,493 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 16:04:24,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 77 transitions, 162 flow [2024-01-31 16:04:24,555 INFO L124 PetriNetUnfolderBase]: 1/75 cut-off events. [2024-01-31 16:04:24,555 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:04:24,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82 conditions, 75 events. 1/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 279 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2024-01-31 16:04:24,560 INFO L82 GeneralOperation]: Start removeDead. Operand has 83 places, 77 transitions, 162 flow [2024-01-31 16:04:24,564 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 75 transitions, 156 flow [2024-01-31 16:04:24,572 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:04:24,579 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;@7836dd8c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:04:24,579 INFO L358 AbstractCegarLoop]: Starting to check reachability of 64 error locations. [2024-01-31 16:04:24,582 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:04:24,582 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-31 16:04:24,582 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:04:24,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:24,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-31 16:04:24,583 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:04:24,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:24,590 INFO L85 PathProgramCache]: Analyzing trace with hash 10282, now seen corresponding path program 1 times [2024-01-31 16:04:24,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:24,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935773081] [2024-01-31 16:04:24,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:24,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:24,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:24,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:24,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:24,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935773081] [2024-01-31 16:04:24,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935773081] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:24,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:24,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:04:24,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588832125] [2024-01-31 16:04:24,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:24,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:04:24,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:24,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:04:24,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:04:24,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 77 [2024-01-31 16:04:24,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 75 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:24,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:24,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 77 [2024-01-31 16:04:24,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:25,720 INFO L124 PetriNetUnfolderBase]: 2237/4623 cut-off events. [2024-01-31 16:04:25,720 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-01-31 16:04:25,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8204 conditions, 4623 events. 2237/4623 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 38898 event pairs, 1699 based on Foata normal form. 99/2822 useless extension candidates. Maximal degree in co-relation 8192. Up to 3523 conditions per place. [2024-01-31 16:04:25,757 INFO L140 encePairwiseOnDemand]: 62/77 looper letters, 40 selfloop transitions, 3 changer transitions 0/73 dead transitions. [2024-01-31 16:04:25,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 73 transitions, 241 flow [2024-01-31 16:04:25,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:04:25,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:04:25,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 154 transitions. [2024-01-31 16:04:25,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-01-31 16:04:25,770 INFO L175 Difference]: Start difference. First operand has 81 places, 75 transitions, 156 flow. Second operand 3 states and 154 transitions. [2024-01-31 16:04:25,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 73 transitions, 241 flow [2024-01-31 16:04:25,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 73 transitions, 238 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:04:25,778 INFO L231 Difference]: Finished difference. Result has 73 places, 67 transitions, 155 flow [2024-01-31 16:04:25,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=73, PETRI_TRANSITIONS=67} [2024-01-31 16:04:25,782 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -8 predicate places. [2024-01-31 16:04:25,782 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 67 transitions, 155 flow [2024-01-31 16:04:25,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:25,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:25,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-31 16:04:25,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:04:25,783 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:04:25,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:25,784 INFO L85 PathProgramCache]: Analyzing trace with hash 306723513, now seen corresponding path program 1 times [2024-01-31 16:04:25,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:25,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147441605] [2024-01-31 16:04:25,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:25,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:25,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:25,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:25,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:25,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147441605] [2024-01-31 16:04:25,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147441605] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:25,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:25,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:04:25,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573225703] [2024-01-31 16:04:25,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:25,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:04:25,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:25,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:04:25,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:04:25,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2024-01-31 16:04:25,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 155 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:25,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:25,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2024-01-31 16:04:25,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:26,447 INFO L124 PetriNetUnfolderBase]: 2406/4898 cut-off events. [2024-01-31 16:04:26,447 INFO L125 PetriNetUnfolderBase]: For 387/387 co-relation queries the response was YES. [2024-01-31 16:04:26,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9227 conditions, 4898 events. 2406/4898 cut-off events. For 387/387 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 40423 event pairs, 1963 based on Foata normal form. 544/3830 useless extension candidates. Maximal degree in co-relation 9214. Up to 3644 conditions per place. [2024-01-31 16:04:26,473 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 57 selfloop transitions, 2 changer transitions 0/82 dead transitions. [2024-01-31 16:04:26,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 82 transitions, 312 flow [2024-01-31 16:04:26,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:04:26,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:04:26,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 167 transitions. [2024-01-31 16:04:26,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5422077922077922 [2024-01-31 16:04:26,479 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 155 flow. Second operand 4 states and 167 transitions. [2024-01-31 16:04:26,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 82 transitions, 312 flow [2024-01-31 16:04:26,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 82 transitions, 308 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:04:26,481 INFO L231 Difference]: Finished difference. Result has 69 places, 61 transitions, 144 flow [2024-01-31 16:04:26,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=144, PETRI_PLACES=69, PETRI_TRANSITIONS=61} [2024-01-31 16:04:26,482 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -12 predicate places. [2024-01-31 16:04:26,482 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 61 transitions, 144 flow [2024-01-31 16:04:26,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:26,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:26,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-31 16:04:26,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:04:26,483 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:04:26,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:26,484 INFO L85 PathProgramCache]: Analyzing trace with hash 918494681, now seen corresponding path program 1 times [2024-01-31 16:04:26,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:26,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630306036] [2024-01-31 16:04:26,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:26,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:26,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:26,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:26,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:26,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630306036] [2024-01-31 16:04:26,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630306036] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:26,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:26,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:04:26,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78781238] [2024-01-31 16:04:26,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:26,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:04:26,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:26,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:04:26,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:04:26,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 77 [2024-01-31 16:04:26,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 61 transitions, 144 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:26,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:26,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 77 [2024-01-31 16:04:26,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:27,384 INFO L124 PetriNetUnfolderBase]: 3367/6482 cut-off events. [2024-01-31 16:04:27,384 INFO L125 PetriNetUnfolderBase]: For 641/647 co-relation queries the response was YES. [2024-01-31 16:04:27,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12536 conditions, 6482 events. 3367/6482 cut-off events. For 641/647 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 52700 event pairs, 2568 based on Foata normal form. 11/4564 useless extension candidates. Maximal degree in co-relation 12522. Up to 5268 conditions per place. [2024-01-31 16:04:27,418 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 51 selfloop transitions, 5 changer transitions 0/74 dead transitions. [2024-01-31 16:04:27,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 74 transitions, 290 flow [2024-01-31 16:04:27,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:04:27,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:04:27,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2024-01-31 16:04:27,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4448051948051948 [2024-01-31 16:04:27,420 INFO L175 Difference]: Start difference. First operand has 69 places, 61 transitions, 144 flow. Second operand 4 states and 137 transitions. [2024-01-31 16:04:27,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 74 transitions, 290 flow [2024-01-31 16:04:27,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 74 transitions, 286 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:04:27,422 INFO L231 Difference]: Finished difference. Result has 72 places, 63 transitions, 167 flow [2024-01-31 16:04:27,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=167, PETRI_PLACES=72, PETRI_TRANSITIONS=63} [2024-01-31 16:04:27,423 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -9 predicate places. [2024-01-31 16:04:27,423 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 63 transitions, 167 flow [2024-01-31 16:04:27,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:27,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:27,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:27,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:04:27,424 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:04:27,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:27,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1592372821, now seen corresponding path program 1 times [2024-01-31 16:04:27,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:27,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967849641] [2024-01-31 16:04:27,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:27,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:27,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:27,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:27,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:27,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967849641] [2024-01-31 16:04:27,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967849641] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:27,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:27,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:04:27,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608114539] [2024-01-31 16:04:27,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:27,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:04:27,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:27,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:04:27,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:04:27,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 77 [2024-01-31 16:04:27,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 63 transitions, 167 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:27,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:27,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 77 [2024-01-31 16:04:27,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:28,066 INFO L124 PetriNetUnfolderBase]: 2504/4686 cut-off events. [2024-01-31 16:04:28,066 INFO L125 PetriNetUnfolderBase]: For 536/544 co-relation queries the response was YES. [2024-01-31 16:04:28,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9337 conditions, 4686 events. 2504/4686 cut-off events. For 536/544 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 36690 event pairs, 353 based on Foata normal form. 550/3932 useless extension candidates. Maximal degree in co-relation 9321. Up to 3759 conditions per place. [2024-01-31 16:04:28,092 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 67 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2024-01-31 16:04:28,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 88 transitions, 369 flow [2024-01-31 16:04:28,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:04:28,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:04:28,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 179 transitions. [2024-01-31 16:04:28,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5811688311688312 [2024-01-31 16:04:28,094 INFO L175 Difference]: Start difference. First operand has 72 places, 63 transitions, 167 flow. Second operand 4 states and 179 transitions. [2024-01-31 16:04:28,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 88 transitions, 369 flow [2024-01-31 16:04:28,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 88 transitions, 357 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:04:28,099 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 153 flow [2024-01-31 16:04:28,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=65, 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=153, PETRI_PLACES=68, PETRI_TRANSITIONS=58} [2024-01-31 16:04:28,100 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -13 predicate places. [2024-01-31 16:04:28,101 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 153 flow [2024-01-31 16:04:28,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:28,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:28,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:28,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:04:28,105 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:04:28,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:28,109 INFO L85 PathProgramCache]: Analyzing trace with hash -2118916799, now seen corresponding path program 1 times [2024-01-31 16:04:28,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:28,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611277312] [2024-01-31 16:04:28,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:28,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:28,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:28,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:28,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:28,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611277312] [2024-01-31 16:04:28,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611277312] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:28,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:28,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:04:28,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418666701] [2024-01-31 16:04:28,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:28,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:04:28,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:28,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:04:28,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:04:28,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 77 [2024-01-31 16:04:28,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 58 transitions, 153 flow. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:28,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:28,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 77 [2024-01-31 16:04:28,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:28,857 INFO L124 PetriNetUnfolderBase]: 3456/6592 cut-off events. [2024-01-31 16:04:28,858 INFO L125 PetriNetUnfolderBase]: For 766/774 co-relation queries the response was YES. [2024-01-31 16:04:28,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13004 conditions, 6592 events. 3456/6592 cut-off events. For 766/774 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 52604 event pairs, 2831 based on Foata normal form. 11/4678 useless extension candidates. Maximal degree in co-relation 12989. Up to 5483 conditions per place. [2024-01-31 16:04:28,885 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 46 selfloop transitions, 6 changer transitions 0/67 dead transitions. [2024-01-31 16:04:28,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 67 transitions, 284 flow [2024-01-31 16:04:28,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:04:28,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:04:28,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 140 transitions. [2024-01-31 16:04:28,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-01-31 16:04:28,887 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 153 flow. Second operand 4 states and 140 transitions. [2024-01-31 16:04:28,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 67 transitions, 284 flow [2024-01-31 16:04:28,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 67 transitions, 278 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:04:28,890 INFO L231 Difference]: Finished difference. Result has 71 places, 60 transitions, 180 flow [2024-01-31 16:04:28,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=71, PETRI_TRANSITIONS=60} [2024-01-31 16:04:28,892 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -10 predicate places. [2024-01-31 16:04:28,893 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 60 transitions, 180 flow [2024-01-31 16:04:28,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:28,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:28,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:28,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:04:28,894 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:04:28,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:28,894 INFO L85 PathProgramCache]: Analyzing trace with hash -2089861636, now seen corresponding path program 1 times [2024-01-31 16:04:28,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:28,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465056256] [2024-01-31 16:04:28,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:28,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:28,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:29,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:29,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:29,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465056256] [2024-01-31 16:04:29,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465056256] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:29,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:29,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:04:29,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159649941] [2024-01-31 16:04:29,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:29,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:04:29,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:29,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:04:29,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:04:29,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:04:29,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 60 transitions, 180 flow. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:29,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:29,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:04:29,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:29,703 INFO L124 PetriNetUnfolderBase]: 2923/5486 cut-off events. [2024-01-31 16:04:29,703 INFO L125 PetriNetUnfolderBase]: For 663/684 co-relation queries the response was YES. [2024-01-31 16:04:29,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10992 conditions, 5486 events. 2923/5486 cut-off events. For 663/684 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 41819 event pairs, 1644 based on Foata normal form. 36/3892 useless extension candidates. Maximal degree in co-relation 10974. Up to 4476 conditions per place. [2024-01-31 16:04:29,728 INFO L140 encePairwiseOnDemand]: 66/77 looper letters, 61 selfloop transitions, 8 changer transitions 0/83 dead transitions. [2024-01-31 16:04:29,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 83 transitions, 375 flow [2024-01-31 16:04:29,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:04:29,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:04:29,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 179 transitions. [2024-01-31 16:04:29,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4649350649350649 [2024-01-31 16:04:29,730 INFO L175 Difference]: Start difference. First operand has 71 places, 60 transitions, 180 flow. Second operand 5 states and 179 transitions. [2024-01-31 16:04:29,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 83 transitions, 375 flow [2024-01-31 16:04:29,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 83 transitions, 370 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:04:29,733 INFO L231 Difference]: Finished difference. Result has 75 places, 62 transitions, 217 flow [2024-01-31 16:04:29,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=217, PETRI_PLACES=75, PETRI_TRANSITIONS=62} [2024-01-31 16:04:29,736 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -6 predicate places. [2024-01-31 16:04:29,736 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 62 transitions, 217 flow [2024-01-31 16:04:29,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:29,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:29,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:29,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 16:04:29,737 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:04:29,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:29,737 INFO L85 PathProgramCache]: Analyzing trace with hash -464617439, now seen corresponding path program 1 times [2024-01-31 16:04:29,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:29,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943841987] [2024-01-31 16:04:29,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:29,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:29,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:29,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:29,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:29,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943841987] [2024-01-31 16:04:29,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943841987] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:29,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:29,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:04:29,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634399168] [2024-01-31 16:04:29,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:29,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:04:29,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:29,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:04:29,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:04:29,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-01-31 16:04:29,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 62 transitions, 217 flow. Second operand has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:29,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:29,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-01-31 16:04:29,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:30,240 INFO L124 PetriNetUnfolderBase]: 1914/3808 cut-off events. [2024-01-31 16:04:30,240 INFO L125 PetriNetUnfolderBase]: For 1085/1087 co-relation queries the response was YES. [2024-01-31 16:04:30,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8121 conditions, 3808 events. 1914/3808 cut-off events. For 1085/1087 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 29317 event pairs, 1504 based on Foata normal form. 14/2853 useless extension candidates. Maximal degree in co-relation 8101. Up to 3055 conditions per place. [2024-01-31 16:04:30,257 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 44 selfloop transitions, 7 changer transitions 0/72 dead transitions. [2024-01-31 16:04:30,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 72 transitions, 345 flow [2024-01-31 16:04:30,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:04:30,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:04:30,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 181 transitions. [2024-01-31 16:04:30,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5876623376623377 [2024-01-31 16:04:30,259 INFO L175 Difference]: Start difference. First operand has 75 places, 62 transitions, 217 flow. Second operand 4 states and 181 transitions. [2024-01-31 16:04:30,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 72 transitions, 345 flow [2024-01-31 16:04:30,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 72 transitions, 331 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-01-31 16:04:30,263 INFO L231 Difference]: Finished difference. Result has 76 places, 64 transitions, 235 flow [2024-01-31 16:04:30,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=235, PETRI_PLACES=76, PETRI_TRANSITIONS=64} [2024-01-31 16:04:30,266 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -5 predicate places. [2024-01-31 16:04:30,266 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 64 transitions, 235 flow [2024-01-31 16:04:30,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.6) internal successors, (173), 5 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:30,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:30,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:30,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 16:04:30,266 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:04:30,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:30,267 INFO L85 PathProgramCache]: Analyzing trace with hash -464531804, now seen corresponding path program 1 times [2024-01-31 16:04:30,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:30,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204309918] [2024-01-31 16:04:30,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:30,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:30,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:30,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:30,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:30,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204309918] [2024-01-31 16:04:30,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204309918] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:30,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:30,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:04:30,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985279923] [2024-01-31 16:04:30,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:30,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:04:30,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:30,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:04:30,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:04:30,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-01-31 16:04:30,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 64 transitions, 235 flow. Second operand has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 6 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:30,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:30,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-01-31 16:04:30,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:30,922 INFO L124 PetriNetUnfolderBase]: 2724/5283 cut-off events. [2024-01-31 16:04:30,922 INFO L125 PetriNetUnfolderBase]: For 2457/2465 co-relation queries the response was YES. [2024-01-31 16:04:30,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11825 conditions, 5283 events. 2724/5283 cut-off events. For 2457/2465 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 40391 event pairs, 2138 based on Foata normal form. 17/4252 useless extension candidates. Maximal degree in co-relation 11804. Up to 4325 conditions per place. [2024-01-31 16:04:30,945 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 52 selfloop transitions, 8 changer transitions 0/75 dead transitions. [2024-01-31 16:04:30,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 75 transitions, 382 flow [2024-01-31 16:04:30,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:04:30,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:04:30,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 173 transitions. [2024-01-31 16:04:30,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44935064935064933 [2024-01-31 16:04:30,947 INFO L175 Difference]: Start difference. First operand has 76 places, 64 transitions, 235 flow. Second operand 5 states and 173 transitions. [2024-01-31 16:04:30,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 75 transitions, 382 flow [2024-01-31 16:04:30,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 75 transitions, 370 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-01-31 16:04:30,949 INFO L231 Difference]: Finished difference. Result has 79 places, 64 transitions, 245 flow [2024-01-31 16:04:30,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=245, PETRI_PLACES=79, PETRI_TRANSITIONS=64} [2024-01-31 16:04:30,950 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, -2 predicate places. [2024-01-31 16:04:30,950 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 64 transitions, 245 flow [2024-01-31 16:04:30,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 6 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:30,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:30,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:30,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 16:04:30,951 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:04:30,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:30,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1542333292, now seen corresponding path program 1 times [2024-01-31 16:04:30,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:30,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014141057] [2024-01-31 16:04:30,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:30,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:30,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:31,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:31,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:31,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014141057] [2024-01-31 16:04:31,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014141057] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:31,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:31,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:04:31,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123157258] [2024-01-31 16:04:31,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:31,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:04:31,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:31,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:04:31,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:04:31,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-01-31 16:04:31,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 64 transitions, 245 flow. Second operand has 6 states, 6 states have (on average 24.5) internal successors, (147), 6 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:31,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:31,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-01-31 16:04:31,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:31,664 INFO L124 PetriNetUnfolderBase]: 2744/5311 cut-off events. [2024-01-31 16:04:31,665 INFO L125 PetriNetUnfolderBase]: For 2589/2597 co-relation queries the response was YES. [2024-01-31 16:04:31,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12029 conditions, 5311 events. 2744/5311 cut-off events. For 2589/2597 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 40427 event pairs, 1831 based on Foata normal form. 20/4287 useless extension candidates. Maximal degree in co-relation 12007. Up to 4244 conditions per place. [2024-01-31 16:04:31,699 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 61 selfloop transitions, 10 changer transitions 0/86 dead transitions. [2024-01-31 16:04:31,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 86 transitions, 445 flow [2024-01-31 16:04:31,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:04:31,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:04:31,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 183 transitions. [2024-01-31 16:04:31,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4753246753246753 [2024-01-31 16:04:31,701 INFO L175 Difference]: Start difference. First operand has 79 places, 64 transitions, 245 flow. Second operand 5 states and 183 transitions. [2024-01-31 16:04:31,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 86 transitions, 445 flow [2024-01-31 16:04:31,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 86 transitions, 429 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 16:04:31,705 INFO L231 Difference]: Finished difference. Result has 81 places, 67 transitions, 273 flow [2024-01-31 16:04:31,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=273, PETRI_PLACES=81, PETRI_TRANSITIONS=67} [2024-01-31 16:04:31,707 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 0 predicate places. [2024-01-31 16:04:31,707 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 67 transitions, 273 flow [2024-01-31 16:04:31,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.5) internal successors, (147), 6 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:31,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:31,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:31,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 16:04:31,708 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:04:31,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:31,708 INFO L85 PathProgramCache]: Analyzing trace with hash -270297358, now seen corresponding path program 1 times [2024-01-31 16:04:31,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:31,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065847420] [2024-01-31 16:04:31,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:31,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:31,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:31,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:31,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:31,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065847420] [2024-01-31 16:04:31,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065847420] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:31,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:31,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:04:31,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421166628] [2024-01-31 16:04:31,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:31,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:04:31,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:31,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:04:31,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:04:31,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:04:31,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 67 transitions, 273 flow. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:31,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:31,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:04:31,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:32,510 INFO L124 PetriNetUnfolderBase]: 2835/5440 cut-off events. [2024-01-31 16:04:32,510 INFO L125 PetriNetUnfolderBase]: For 2784/2841 co-relation queries the response was YES. [2024-01-31 16:04:32,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12426 conditions, 5440 events. 2835/5440 cut-off events. For 2784/2841 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 42225 event pairs, 2208 based on Foata normal form. 43/4319 useless extension candidates. Maximal degree in co-relation 12402. Up to 4466 conditions per place. [2024-01-31 16:04:32,536 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 57 selfloop transitions, 11 changer transitions 0/83 dead transitions. [2024-01-31 16:04:32,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 83 transitions, 459 flow [2024-01-31 16:04:32,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:04:32,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:04:32,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 167 transitions. [2024-01-31 16:04:32,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43376623376623374 [2024-01-31 16:04:32,538 INFO L175 Difference]: Start difference. First operand has 81 places, 67 transitions, 273 flow. Second operand 5 states and 167 transitions. [2024-01-31 16:04:32,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 83 transitions, 459 flow [2024-01-31 16:04:32,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 83 transitions, 439 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-01-31 16:04:32,541 INFO L231 Difference]: Finished difference. Result has 84 places, 71 transitions, 305 flow [2024-01-31 16:04:32,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=305, PETRI_PLACES=84, PETRI_TRANSITIONS=71} [2024-01-31 16:04:32,542 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 3 predicate places. [2024-01-31 16:04:32,542 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 71 transitions, 305 flow [2024-01-31 16:04:32,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:32,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:32,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:32,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-31 16:04:32,543 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:04:32,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:32,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1397087712, now seen corresponding path program 2 times [2024-01-31 16:04:32,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:32,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782899698] [2024-01-31 16:04:32,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:32,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:32,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:32,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:32,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:32,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782899698] [2024-01-31 16:04:32,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782899698] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:32,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:32,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:04:32,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294747137] [2024-01-31 16:04:32,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:32,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:04:32,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:32,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:04:32,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:04:32,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-01-31 16:04:32,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 71 transitions, 305 flow. Second operand has 6 states, 6 states have (on average 24.5) internal successors, (147), 6 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:32,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:32,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-01-31 16:04:32,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:33,249 INFO L124 PetriNetUnfolderBase]: 2733/5263 cut-off events. [2024-01-31 16:04:33,249 INFO L125 PetriNetUnfolderBase]: For 2972/2983 co-relation queries the response was YES. [2024-01-31 16:04:33,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12182 conditions, 5263 events. 2733/5263 cut-off events. For 2972/2983 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 40132 event pairs, 1853 based on Foata normal form. 20/4235 useless extension candidates. Maximal degree in co-relation 12156. Up to 4250 conditions per place. [2024-01-31 16:04:33,284 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 63 selfloop transitions, 11 changer transitions 0/90 dead transitions. [2024-01-31 16:04:33,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 90 transitions, 497 flow [2024-01-31 16:04:33,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:04:33,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:04:33,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 182 transitions. [2024-01-31 16:04:33,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4727272727272727 [2024-01-31 16:04:33,286 INFO L175 Difference]: Start difference. First operand has 84 places, 71 transitions, 305 flow. Second operand 5 states and 182 transitions. [2024-01-31 16:04:33,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 90 transitions, 497 flow [2024-01-31 16:04:33,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 90 transitions, 487 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-31 16:04:33,290 INFO L231 Difference]: Finished difference. Result has 88 places, 72 transitions, 327 flow [2024-01-31 16:04:33,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=327, PETRI_PLACES=88, PETRI_TRANSITIONS=72} [2024-01-31 16:04:33,291 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 7 predicate places. [2024-01-31 16:04:33,291 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 72 transitions, 327 flow [2024-01-31 16:04:33,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.5) internal successors, (147), 6 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:33,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:33,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:33,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-31 16:04:33,291 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:04:33,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:33,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1515616402, now seen corresponding path program 2 times [2024-01-31 16:04:33,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:33,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443884447] [2024-01-31 16:04:33,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:33,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:33,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:33,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:33,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:33,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443884447] [2024-01-31 16:04:33,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443884447] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:33,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:33,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:04:33,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267694247] [2024-01-31 16:04:33,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:33,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:04:33,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:33,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:04:33,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:04:33,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:04:33,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 72 transitions, 327 flow. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:33,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:33,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:04:33,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:33,956 INFO L124 PetriNetUnfolderBase]: 2790/5356 cut-off events. [2024-01-31 16:04:33,956 INFO L125 PetriNetUnfolderBase]: For 2975/3002 co-relation queries the response was YES. [2024-01-31 16:04:33,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12351 conditions, 5356 events. 2790/5356 cut-off events. For 2975/3002 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 41640 event pairs, 2184 based on Foata normal form. 22/4220 useless extension candidates. Maximal degree in co-relation 12323. Up to 4399 conditions per place. [2024-01-31 16:04:33,984 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 56 selfloop transitions, 11 changer transitions 0/82 dead transitions. [2024-01-31 16:04:33,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 82 transitions, 485 flow [2024-01-31 16:04:33,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:04:33,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:04:33,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 165 transitions. [2024-01-31 16:04:33,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-01-31 16:04:33,986 INFO L175 Difference]: Start difference. First operand has 88 places, 72 transitions, 327 flow. Second operand 5 states and 165 transitions. [2024-01-31 16:04:33,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 82 transitions, 485 flow [2024-01-31 16:04:33,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 82 transitions, 470 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:04:33,990 INFO L231 Difference]: Finished difference. Result has 91 places, 72 transitions, 339 flow [2024-01-31 16:04:33,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=339, PETRI_PLACES=91, PETRI_TRANSITIONS=72} [2024-01-31 16:04:33,990 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 10 predicate places. [2024-01-31 16:04:33,991 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 72 transitions, 339 flow [2024-01-31 16:04:33,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:33,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:33,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:33,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-31 16:04:33,991 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:04:33,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:33,992 INFO L85 PathProgramCache]: Analyzing trace with hash 179293086, now seen corresponding path program 1 times [2024-01-31 16:04:33,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:33,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044932319] [2024-01-31 16:04:33,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:33,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:33,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:34,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:34,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:34,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044932319] [2024-01-31 16:04:34,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044932319] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:34,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:34,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:04:34,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520797353] [2024-01-31 16:04:34,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:34,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:04:34,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:34,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:04:34,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:04:34,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-01-31 16:04:34,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 72 transitions, 339 flow. Second operand has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:34,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:34,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-01-31 16:04:34,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:34,545 INFO L124 PetriNetUnfolderBase]: 1518/3184 cut-off events. [2024-01-31 16:04:34,545 INFO L125 PetriNetUnfolderBase]: For 2346/2354 co-relation queries the response was YES. [2024-01-31 16:04:34,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7295 conditions, 3184 events. 1518/3184 cut-off events. For 2346/2354 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 23903 event pairs, 906 based on Foata normal form. 88/2611 useless extension candidates. Maximal degree in co-relation 7265. Up to 2007 conditions per place. [2024-01-31 16:04:34,561 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 67 selfloop transitions, 15 changer transitions 0/105 dead transitions. [2024-01-31 16:04:34,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 105 transitions, 607 flow [2024-01-31 16:04:34,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:04:34,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:04:34,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 237 transitions. [2024-01-31 16:04:34,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6155844155844156 [2024-01-31 16:04:34,563 INFO L175 Difference]: Start difference. First operand has 91 places, 72 transitions, 339 flow. Second operand 5 states and 237 transitions. [2024-01-31 16:04:34,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 105 transitions, 607 flow [2024-01-31 16:04:34,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 105 transitions, 575 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-01-31 16:04:34,566 INFO L231 Difference]: Finished difference. Result has 93 places, 81 transitions, 411 flow [2024-01-31 16:04:34,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=411, PETRI_PLACES=93, PETRI_TRANSITIONS=81} [2024-01-31 16:04:34,566 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 12 predicate places. [2024-01-31 16:04:34,566 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 81 transitions, 411 flow [2024-01-31 16:04:34,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:34,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:34,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:34,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-01-31 16:04:34,567 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:04:34,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:34,567 INFO L85 PathProgramCache]: Analyzing trace with hash 261549031, now seen corresponding path program 1 times [2024-01-31 16:04:34,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:34,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618644138] [2024-01-31 16:04:34,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:34,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:34,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:34,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:34,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:34,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618644138] [2024-01-31 16:04:34,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618644138] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:34,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:34,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:04:34,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407791448] [2024-01-31 16:04:34,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:34,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:34,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:34,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:34,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:34,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-01-31 16:04:34,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 81 transitions, 411 flow. Second operand has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:34,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:34,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-01-31 16:04:34,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:35,229 INFO L124 PetriNetUnfolderBase]: 2051/4161 cut-off events. [2024-01-31 16:04:35,229 INFO L125 PetriNetUnfolderBase]: For 3990/4001 co-relation queries the response was YES. [2024-01-31 16:04:35,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10297 conditions, 4161 events. 2051/4161 cut-off events. For 3990/4001 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 30717 event pairs, 791 based on Foata normal form. 33/3556 useless extension candidates. Maximal degree in co-relation 10265. Up to 2672 conditions per place. [2024-01-31 16:04:35,252 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 80 selfloop transitions, 18 changer transitions 0/114 dead transitions. [2024-01-31 16:04:35,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 114 transitions, 708 flow [2024-01-31 16:04:35,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:35,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:35,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 224 transitions. [2024-01-31 16:04:35,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2024-01-31 16:04:35,254 INFO L175 Difference]: Start difference. First operand has 93 places, 81 transitions, 411 flow. Second operand 6 states and 224 transitions. [2024-01-31 16:04:35,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 114 transitions, 708 flow [2024-01-31 16:04:35,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 114 transitions, 704 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-01-31 16:04:35,259 INFO L231 Difference]: Finished difference. Result has 100 places, 83 transitions, 472 flow [2024-01-31 16:04:35,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=472, PETRI_PLACES=100, PETRI_TRANSITIONS=83} [2024-01-31 16:04:35,259 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 19 predicate places. [2024-01-31 16:04:35,259 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 83 transitions, 472 flow [2024-01-31 16:04:35,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:35,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:35,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:35,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-01-31 16:04:35,260 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:04:35,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:35,260 INFO L85 PathProgramCache]: Analyzing trace with hash 562636642, now seen corresponding path program 1 times [2024-01-31 16:04:35,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:35,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95322876] [2024-01-31 16:04:35,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:35,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:35,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:35,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:35,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:35,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95322876] [2024-01-31 16:04:35,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95322876] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:35,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:35,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:04:35,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418408128] [2024-01-31 16:04:35,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:35,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:04:35,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:35,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:04:35,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:04:35,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-01-31 16:04:35,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 83 transitions, 472 flow. Second operand has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:35,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:35,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-01-31 16:04:35,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:35,786 INFO L124 PetriNetUnfolderBase]: 1491/3168 cut-off events. [2024-01-31 16:04:35,786 INFO L125 PetriNetUnfolderBase]: For 4119/4132 co-relation queries the response was YES. [2024-01-31 16:04:35,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8263 conditions, 3168 events. 1491/3168 cut-off events. For 4119/4132 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 23717 event pairs, 725 based on Foata normal form. 17/2732 useless extension candidates. Maximal degree in co-relation 8227. Up to 2015 conditions per place. [2024-01-31 16:04:35,802 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 71 selfloop transitions, 17 changer transitions 0/112 dead transitions. [2024-01-31 16:04:35,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 112 transitions, 758 flow [2024-01-31 16:04:35,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:04:35,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:04:35,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 239 transitions. [2024-01-31 16:04:35,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6207792207792208 [2024-01-31 16:04:35,804 INFO L175 Difference]: Start difference. First operand has 100 places, 83 transitions, 472 flow. Second operand 5 states and 239 transitions. [2024-01-31 16:04:35,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 112 transitions, 758 flow [2024-01-31 16:04:35,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 112 transitions, 722 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 16:04:35,809 INFO L231 Difference]: Finished difference. Result has 101 places, 85 transitions, 494 flow [2024-01-31 16:04:35,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=494, PETRI_PLACES=101, PETRI_TRANSITIONS=85} [2024-01-31 16:04:35,809 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 20 predicate places. [2024-01-31 16:04:35,810 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 85 transitions, 494 flow [2024-01-31 16:04:35,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:35,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:35,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:35,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-01-31 16:04:35,810 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:04:35,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:35,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1398289402, now seen corresponding path program 2 times [2024-01-31 16:04:35,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:35,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247400483] [2024-01-31 16:04:35,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:35,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:35,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:35,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:35,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247400483] [2024-01-31 16:04:35,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247400483] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:35,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:35,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:04:35,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076451373] [2024-01-31 16:04:35,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:35,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:04:35,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:35,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:04:35,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:04:35,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-01-31 16:04:35,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 85 transitions, 494 flow. Second operand has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:35,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:35,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-01-31 16:04:35,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:36,347 INFO L124 PetriNetUnfolderBase]: 1437/3073 cut-off events. [2024-01-31 16:04:36,348 INFO L125 PetriNetUnfolderBase]: For 4356/4373 co-relation queries the response was YES. [2024-01-31 16:04:36,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7976 conditions, 3073 events. 1437/3073 cut-off events. For 4356/4373 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 23033 event pairs, 687 based on Foata normal form. 35/2659 useless extension candidates. Maximal degree in co-relation 7939. Up to 1999 conditions per place. [2024-01-31 16:04:36,366 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 67 selfloop transitions, 16 changer transitions 0/107 dead transitions. [2024-01-31 16:04:36,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 107 transitions, 728 flow [2024-01-31 16:04:36,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:04:36,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:04:36,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 233 transitions. [2024-01-31 16:04:36,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6051948051948052 [2024-01-31 16:04:36,367 INFO L175 Difference]: Start difference. First operand has 101 places, 85 transitions, 494 flow. Second operand 5 states and 233 transitions. [2024-01-31 16:04:36,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 107 transitions, 728 flow [2024-01-31 16:04:36,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 107 transitions, 706 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-01-31 16:04:36,372 INFO L231 Difference]: Finished difference. Result has 104 places, 85 transitions, 512 flow [2024-01-31 16:04:36,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=99, 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=5, PETRI_FLOW=512, PETRI_PLACES=104, PETRI_TRANSITIONS=85} [2024-01-31 16:04:36,373 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 23 predicate places. [2024-01-31 16:04:36,373 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 85 transitions, 512 flow [2024-01-31 16:04:36,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:36,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:36,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:36,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-01-31 16:04:36,374 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:04:36,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:36,374 INFO L85 PathProgramCache]: Analyzing trace with hash -545728103, now seen corresponding path program 1 times [2024-01-31 16:04:36,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:36,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105709950] [2024-01-31 16:04:36,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:36,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:36,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:36,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:36,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:36,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105709950] [2024-01-31 16:04:36,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105709950] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:36,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:36,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:04:36,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366992417] [2024-01-31 16:04:36,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:36,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:36,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:36,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:36,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:36,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:04:36,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 85 transitions, 512 flow. Second operand has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:36,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:36,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:04:36,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:37,117 INFO L124 PetriNetUnfolderBase]: 2029/3970 cut-off events. [2024-01-31 16:04:37,117 INFO L125 PetriNetUnfolderBase]: For 5917/5959 co-relation queries the response was YES. [2024-01-31 16:04:37,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10627 conditions, 3970 events. 2029/3970 cut-off events. For 5917/5959 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 28543 event pairs, 924 based on Foata normal form. 31/3489 useless extension candidates. Maximal degree in co-relation 10589. Up to 2735 conditions per place. [2024-01-31 16:04:37,141 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 86 selfloop transitions, 21 changer transitions 0/123 dead transitions. [2024-01-31 16:04:37,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 123 transitions, 839 flow [2024-01-31 16:04:37,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:37,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:37,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 220 transitions. [2024-01-31 16:04:37,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-01-31 16:04:37,142 INFO L175 Difference]: Start difference. First operand has 104 places, 85 transitions, 512 flow. Second operand 6 states and 220 transitions. [2024-01-31 16:04:37,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 123 transitions, 839 flow [2024-01-31 16:04:37,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 123 transitions, 798 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 16:04:37,151 INFO L231 Difference]: Finished difference. Result has 107 places, 87 transitions, 540 flow [2024-01-31 16:04:37,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=540, PETRI_PLACES=107, PETRI_TRANSITIONS=87} [2024-01-31 16:04:37,151 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 26 predicate places. [2024-01-31 16:04:37,151 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 87 transitions, 540 flow [2024-01-31 16:04:37,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:37,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:37,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:37,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-01-31 16:04:37,152 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:04:37,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:37,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1262613507, now seen corresponding path program 1 times [2024-01-31 16:04:37,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:37,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128506771] [2024-01-31 16:04:37,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:37,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:37,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:37,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:37,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:37,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128506771] [2024-01-31 16:04:37,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128506771] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:37,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:37,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:04:37,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239599903] [2024-01-31 16:04:37,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:37,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:37,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:37,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:37,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:37,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-01-31 16:04:37,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 87 transitions, 540 flow. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:37,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:37,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-01-31 16:04:37,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:37,871 INFO L124 PetriNetUnfolderBase]: 2126/4154 cut-off events. [2024-01-31 16:04:37,871 INFO L125 PetriNetUnfolderBase]: For 6131/6142 co-relation queries the response was YES. [2024-01-31 16:04:37,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11301 conditions, 4154 events. 2126/4154 cut-off events. For 6131/6142 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 30089 event pairs, 984 based on Foata normal form. 14/3638 useless extension candidates. Maximal degree in co-relation 11261. Up to 2690 conditions per place. [2024-01-31 16:04:37,897 INFO L140 encePairwiseOnDemand]: 65/77 looper letters, 89 selfloop transitions, 27 changer transitions 0/133 dead transitions. [2024-01-31 16:04:37,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 133 transitions, 941 flow [2024-01-31 16:04:37,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:37,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:37,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 238 transitions. [2024-01-31 16:04:37,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2024-01-31 16:04:37,900 INFO L175 Difference]: Start difference. First operand has 107 places, 87 transitions, 540 flow. Second operand 6 states and 238 transitions. [2024-01-31 16:04:37,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 133 transitions, 941 flow [2024-01-31 16:04:37,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 133 transitions, 907 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-01-31 16:04:37,909 INFO L231 Difference]: Finished difference. Result has 111 places, 95 transitions, 635 flow [2024-01-31 16:04:37,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=635, PETRI_PLACES=111, PETRI_TRANSITIONS=95} [2024-01-31 16:04:37,910 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 30 predicate places. [2024-01-31 16:04:37,910 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 95 transitions, 635 flow [2024-01-31 16:04:37,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:37,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:37,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:37,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-01-31 16:04:37,911 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:04:37,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:37,911 INFO L85 PathProgramCache]: Analyzing trace with hash -2057710379, now seen corresponding path program 2 times [2024-01-31 16:04:37,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:37,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42313447] [2024-01-31 16:04:37,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:37,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:37,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:38,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:38,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:38,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42313447] [2024-01-31 16:04:38,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42313447] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:38,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:38,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:04:38,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399562913] [2024-01-31 16:04:38,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:38,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:38,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:38,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:38,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:38,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:04:38,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 95 transitions, 635 flow. Second operand has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:38,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:38,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:04:38,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:38,771 INFO L124 PetriNetUnfolderBase]: 3300/6093 cut-off events. [2024-01-31 16:04:38,771 INFO L125 PetriNetUnfolderBase]: For 10820/10999 co-relation queries the response was YES. [2024-01-31 16:04:38,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17652 conditions, 6093 events. 3300/6093 cut-off events. For 10820/10999 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 43048 event pairs, 1333 based on Foata normal form. 127/5525 useless extension candidates. Maximal degree in co-relation 17609. Up to 3875 conditions per place. [2024-01-31 16:04:38,810 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 96 selfloop transitions, 28 changer transitions 0/143 dead transitions. [2024-01-31 16:04:38,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 143 transitions, 1115 flow [2024-01-31 16:04:38,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:38,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:38,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 223 transitions. [2024-01-31 16:04:38,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48268398268398266 [2024-01-31 16:04:38,813 INFO L175 Difference]: Start difference. First operand has 111 places, 95 transitions, 635 flow. Second operand 6 states and 223 transitions. [2024-01-31 16:04:38,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 143 transitions, 1115 flow [2024-01-31 16:04:38,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 143 transitions, 1053 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 16:04:38,828 INFO L231 Difference]: Finished difference. Result has 114 places, 104 transitions, 751 flow [2024-01-31 16:04:38,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=751, PETRI_PLACES=114, PETRI_TRANSITIONS=104} [2024-01-31 16:04:38,828 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 33 predicate places. [2024-01-31 16:04:38,828 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 104 transitions, 751 flow [2024-01-31 16:04:38,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:38,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:38,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:38,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-01-31 16:04:38,829 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:04:38,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:38,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1724261767, now seen corresponding path program 2 times [2024-01-31 16:04:38,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:38,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835518046] [2024-01-31 16:04:38,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:38,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:38,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:38,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:38,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:38,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835518046] [2024-01-31 16:04:38,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835518046] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:38,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:38,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:04:38,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132825273] [2024-01-31 16:04:38,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:38,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:38,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:38,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:38,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:39,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-01-31 16:04:39,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 104 transitions, 751 flow. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:39,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:39,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-01-31 16:04:39,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:39,509 INFO L124 PetriNetUnfolderBase]: 2226/4342 cut-off events. [2024-01-31 16:04:39,509 INFO L125 PetriNetUnfolderBase]: For 8014/8031 co-relation queries the response was YES. [2024-01-31 16:04:39,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12956 conditions, 4342 events. 2226/4342 cut-off events. For 8014/8031 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 31437 event pairs, 984 based on Foata normal form. 116/3926 useless extension candidates. Maximal degree in co-relation 12911. Up to 2744 conditions per place. [2024-01-31 16:04:39,532 INFO L140 encePairwiseOnDemand]: 67/77 looper letters, 81 selfloop transitions, 32 changer transitions 0/130 dead transitions. [2024-01-31 16:04:39,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 130 transitions, 1074 flow [2024-01-31 16:04:39,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:39,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:39,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 222 transitions. [2024-01-31 16:04:39,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4805194805194805 [2024-01-31 16:04:39,533 INFO L175 Difference]: Start difference. First operand has 114 places, 104 transitions, 751 flow. Second operand 6 states and 222 transitions. [2024-01-31 16:04:39,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 130 transitions, 1074 flow [2024-01-31 16:04:39,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 130 transitions, 1051 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:04:39,544 INFO L231 Difference]: Finished difference. Result has 118 places, 104 transitions, 814 flow [2024-01-31 16:04:39,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=814, PETRI_PLACES=118, PETRI_TRANSITIONS=104} [2024-01-31 16:04:39,545 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 37 predicate places. [2024-01-31 16:04:39,545 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 104 transitions, 814 flow [2024-01-31 16:04:39,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:39,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:39,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:39,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-01-31 16:04:39,546 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:04:39,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:39,546 INFO L85 PathProgramCache]: Analyzing trace with hash -2057682577, now seen corresponding path program 1 times [2024-01-31 16:04:39,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:39,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757395606] [2024-01-31 16:04:39,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:39,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:39,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:39,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:39,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:39,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757395606] [2024-01-31 16:04:39,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757395606] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:39,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:39,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:04:39,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119485167] [2024-01-31 16:04:39,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:39,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:39,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:39,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:39,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:39,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:04:39,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 104 transitions, 814 flow. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:39,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:39,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:04:39,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:40,340 INFO L124 PetriNetUnfolderBase]: 2970/5549 cut-off events. [2024-01-31 16:04:40,340 INFO L125 PetriNetUnfolderBase]: For 13535/13704 co-relation queries the response was YES. [2024-01-31 16:04:40,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17064 conditions, 5549 events. 2970/5549 cut-off events. For 13535/13704 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 39061 event pairs, 1237 based on Foata normal form. 67/4940 useless extension candidates. Maximal degree in co-relation 17018. Up to 3830 conditions per place. [2024-01-31 16:04:40,375 INFO L140 encePairwiseOnDemand]: 67/77 looper letters, 86 selfloop transitions, 29 changer transitions 0/134 dead transitions. [2024-01-31 16:04:40,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 134 transitions, 1138 flow [2024-01-31 16:04:40,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:40,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:40,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 215 transitions. [2024-01-31 16:04:40,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4653679653679654 [2024-01-31 16:04:40,377 INFO L175 Difference]: Start difference. First operand has 118 places, 104 transitions, 814 flow. Second operand 6 states and 215 transitions. [2024-01-31 16:04:40,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 134 transitions, 1138 flow [2024-01-31 16:04:40,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 134 transitions, 1074 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-31 16:04:40,393 INFO L231 Difference]: Finished difference. Result has 119 places, 104 transitions, 821 flow [2024-01-31 16:04:40,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=821, PETRI_PLACES=119, PETRI_TRANSITIONS=104} [2024-01-31 16:04:40,394 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 38 predicate places. [2024-01-31 16:04:40,394 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 104 transitions, 821 flow [2024-01-31 16:04:40,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:40,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:40,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:40,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-01-31 16:04:40,395 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:04:40,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:40,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1750153065, now seen corresponding path program 3 times [2024-01-31 16:04:40,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:40,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636548121] [2024-01-31 16:04:40,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:40,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:40,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:40,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:40,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:40,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636548121] [2024-01-31 16:04:40,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636548121] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:40,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:40,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:04:40,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487184825] [2024-01-31 16:04:40,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:40,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:40,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:40,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:40,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:40,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:04:40,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 104 transitions, 821 flow. Second operand has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:40,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:40,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:04:40,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:41,202 INFO L124 PetriNetUnfolderBase]: 2973/5536 cut-off events. [2024-01-31 16:04:41,202 INFO L125 PetriNetUnfolderBase]: For 14161/14325 co-relation queries the response was YES. [2024-01-31 16:04:41,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17097 conditions, 5536 events. 2973/5536 cut-off events. For 14161/14325 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 38823 event pairs, 1220 based on Foata normal form. 83/4943 useless extension candidates. Maximal degree in co-relation 17050. Up to 3851 conditions per place. [2024-01-31 16:04:41,233 INFO L140 encePairwiseOnDemand]: 65/77 looper letters, 81 selfloop transitions, 38 changer transitions 0/138 dead transitions. [2024-01-31 16:04:41,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 138 transitions, 1203 flow [2024-01-31 16:04:41,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:41,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:41,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 215 transitions. [2024-01-31 16:04:41,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4653679653679654 [2024-01-31 16:04:41,235 INFO L175 Difference]: Start difference. First operand has 119 places, 104 transitions, 821 flow. Second operand 6 states and 215 transitions. [2024-01-31 16:04:41,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 138 transitions, 1203 flow [2024-01-31 16:04:41,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 138 transitions, 1134 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-31 16:04:41,252 INFO L231 Difference]: Finished difference. Result has 121 places, 110 transitions, 912 flow [2024-01-31 16:04:41,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=912, PETRI_PLACES=121, PETRI_TRANSITIONS=110} [2024-01-31 16:04:41,253 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 40 predicate places. [2024-01-31 16:04:41,253 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 110 transitions, 912 flow [2024-01-31 16:04:41,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:41,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:41,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:41,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-01-31 16:04:41,254 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:04:41,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:41,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1750180867, now seen corresponding path program 2 times [2024-01-31 16:04:41,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:41,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546241405] [2024-01-31 16:04:41,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:41,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:41,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:41,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:41,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:41,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546241405] [2024-01-31 16:04:41,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546241405] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:41,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:41,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:04:41,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135297548] [2024-01-31 16:04:41,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:41,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:41,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:41,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:41,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:41,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:04:41,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 110 transitions, 912 flow. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:41,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:41,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:04:41,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:42,097 INFO L124 PetriNetUnfolderBase]: 2999/5604 cut-off events. [2024-01-31 16:04:42,097 INFO L125 PetriNetUnfolderBase]: For 15112/15290 co-relation queries the response was YES. [2024-01-31 16:04:42,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17952 conditions, 5604 events. 2999/5604 cut-off events. For 15112/15290 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 39405 event pairs, 1205 based on Foata normal form. 80/5011 useless extension candidates. Maximal degree in co-relation 17903. Up to 3863 conditions per place. [2024-01-31 16:04:42,129 INFO L140 encePairwiseOnDemand]: 64/77 looper letters, 79 selfloop transitions, 42 changer transitions 0/140 dead transitions. [2024-01-31 16:04:42,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 140 transitions, 1304 flow [2024-01-31 16:04:42,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:42,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:42,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 214 transitions. [2024-01-31 16:04:42,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46320346320346323 [2024-01-31 16:04:42,131 INFO L175 Difference]: Start difference. First operand has 121 places, 110 transitions, 912 flow. Second operand 6 states and 214 transitions. [2024-01-31 16:04:42,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 140 transitions, 1304 flow [2024-01-31 16:04:42,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 140 transitions, 1251 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-01-31 16:04:42,148 INFO L231 Difference]: Finished difference. Result has 125 places, 115 transitions, 1054 flow [2024-01-31 16:04:42,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=863, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1054, PETRI_PLACES=125, PETRI_TRANSITIONS=115} [2024-01-31 16:04:42,149 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 44 predicate places. [2024-01-31 16:04:42,149 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 115 transitions, 1054 flow [2024-01-31 16:04:42,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:42,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:42,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:42,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-01-31 16:04:42,150 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:04:42,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:42,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1751106217, now seen corresponding path program 3 times [2024-01-31 16:04:42,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:42,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792933954] [2024-01-31 16:04:42,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:42,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:42,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:42,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:42,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:42,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792933954] [2024-01-31 16:04:42,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792933954] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:42,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:42,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:04:42,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443550204] [2024-01-31 16:04:42,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:42,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:42,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:42,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:42,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:42,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:04:42,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 115 transitions, 1054 flow. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:42,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:42,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:04:42,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:42,920 INFO L124 PetriNetUnfolderBase]: 3061/5696 cut-off events. [2024-01-31 16:04:42,920 INFO L125 PetriNetUnfolderBase]: For 17106/17293 co-relation queries the response was YES. [2024-01-31 16:04:42,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18808 conditions, 5696 events. 3061/5696 cut-off events. For 17106/17293 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 40017 event pairs, 1205 based on Foata normal form. 62/5082 useless extension candidates. Maximal degree in co-relation 18757. Up to 3902 conditions per place. [2024-01-31 16:04:42,953 INFO L140 encePairwiseOnDemand]: 66/77 looper letters, 79 selfloop transitions, 51 changer transitions 0/149 dead transitions. [2024-01-31 16:04:42,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 149 transitions, 1477 flow [2024-01-31 16:04:42,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:42,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:42,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 211 transitions. [2024-01-31 16:04:42,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45670995670995673 [2024-01-31 16:04:42,955 INFO L175 Difference]: Start difference. First operand has 125 places, 115 transitions, 1054 flow. Second operand 6 states and 211 transitions. [2024-01-31 16:04:42,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 149 transitions, 1477 flow [2024-01-31 16:04:42,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 149 transitions, 1423 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-31 16:04:42,978 INFO L231 Difference]: Finished difference. Result has 129 places, 125 transitions, 1244 flow [2024-01-31 16:04:42,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1007, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1244, PETRI_PLACES=129, PETRI_TRANSITIONS=125} [2024-01-31 16:04:42,979 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 48 predicate places. [2024-01-31 16:04:42,979 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 125 transitions, 1244 flow [2024-01-31 16:04:42,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:42,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:42,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:42,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-01-31 16:04:42,980 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:04:42,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:42,981 INFO L85 PathProgramCache]: Analyzing trace with hash -726710362, now seen corresponding path program 1 times [2024-01-31 16:04:42,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:42,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466323687] [2024-01-31 16:04:42,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:42,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:42,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:43,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:43,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:43,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466323687] [2024-01-31 16:04:43,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466323687] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:43,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:43,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:43,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981613504] [2024-01-31 16:04:43,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:43,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:43,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:43,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:43,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:43,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-01-31 16:04:43,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 125 transitions, 1244 flow. Second operand has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:43,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:43,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-01-31 16:04:43,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:43,735 INFO L124 PetriNetUnfolderBase]: 1935/3830 cut-off events. [2024-01-31 16:04:43,735 INFO L125 PetriNetUnfolderBase]: For 16956/17149 co-relation queries the response was YES. [2024-01-31 16:04:43,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14204 conditions, 3830 events. 1935/3830 cut-off events. For 16956/17149 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 25944 event pairs, 626 based on Foata normal form. 176/3619 useless extension candidates. Maximal degree in co-relation 14151. Up to 1533 conditions per place. [2024-01-31 16:04:43,758 INFO L140 encePairwiseOnDemand]: 64/77 looper letters, 104 selfloop transitions, 43 changer transitions 0/170 dead transitions. [2024-01-31 16:04:43,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 170 transitions, 1717 flow [2024-01-31 16:04:43,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:43,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:43,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 267 transitions. [2024-01-31 16:04:43,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49536178107606677 [2024-01-31 16:04:43,759 INFO L175 Difference]: Start difference. First operand has 129 places, 125 transitions, 1244 flow. Second operand 7 states and 267 transitions. [2024-01-31 16:04:43,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 170 transitions, 1717 flow [2024-01-31 16:04:43,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 170 transitions, 1594 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-01-31 16:04:43,784 INFO L231 Difference]: Finished difference. Result has 131 places, 130 transitions, 1280 flow [2024-01-31 16:04:43,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1121, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1280, PETRI_PLACES=131, PETRI_TRANSITIONS=130} [2024-01-31 16:04:43,785 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 50 predicate places. [2024-01-31 16:04:43,785 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 130 transitions, 1280 flow [2024-01-31 16:04:43,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:43,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:43,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:43,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-01-31 16:04:43,785 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:04:43,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:43,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1597610877, now seen corresponding path program 1 times [2024-01-31 16:04:43,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:43,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261586553] [2024-01-31 16:04:43,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:43,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:43,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:43,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:43,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:43,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261586553] [2024-01-31 16:04:43,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261586553] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:43,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:43,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:04:43,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524609803] [2024-01-31 16:04:43,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:43,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:43,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:43,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:43,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:43,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-01-31 16:04:43,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 130 transitions, 1280 flow. Second operand has 7 states, 7 states have (on average 34.57142857142857) internal successors, (242), 7 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:43,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:43,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-01-31 16:04:43,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:44,357 INFO L124 PetriNetUnfolderBase]: 1561/3216 cut-off events. [2024-01-31 16:04:44,357 INFO L125 PetriNetUnfolderBase]: For 17506/17673 co-relation queries the response was YES. [2024-01-31 16:04:44,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12603 conditions, 3216 events. 1561/3216 cut-off events. For 17506/17673 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 22430 event pairs, 409 based on Foata normal form. 62/3030 useless extension candidates. Maximal degree in co-relation 12549. Up to 1559 conditions per place. [2024-01-31 16:04:44,379 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 120 selfloop transitions, 63 changer transitions 0/217 dead transitions. [2024-01-31 16:04:44,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 217 transitions, 2612 flow [2024-01-31 16:04:44,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:44,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:44,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 315 transitions. [2024-01-31 16:04:44,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5844155844155844 [2024-01-31 16:04:44,380 INFO L175 Difference]: Start difference. First operand has 131 places, 130 transitions, 1280 flow. Second operand 7 states and 315 transitions. [2024-01-31 16:04:44,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 217 transitions, 2612 flow [2024-01-31 16:04:44,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 217 transitions, 2552 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-01-31 16:04:44,408 INFO L231 Difference]: Finished difference. Result has 138 places, 176 transitions, 2124 flow [2024-01-31 16:04:44,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=1241, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2124, PETRI_PLACES=138, PETRI_TRANSITIONS=176} [2024-01-31 16:04:44,409 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 57 predicate places. [2024-01-31 16:04:44,409 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 176 transitions, 2124 flow [2024-01-31 16:04:44,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.57142857142857) internal successors, (242), 7 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:44,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:44,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:44,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-01-31 16:04:44,410 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:04:44,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:44,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1065048879, now seen corresponding path program 1 times [2024-01-31 16:04:44,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:44,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061761326] [2024-01-31 16:04:44,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:44,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:44,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:44,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:44,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:44,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061761326] [2024-01-31 16:04:44,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061761326] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:44,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:44,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:04:44,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017224399] [2024-01-31 16:04:44,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:44,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:44,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:44,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:44,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:44,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-01-31 16:04:44,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 176 transitions, 2124 flow. Second operand has 7 states, 7 states have (on average 34.57142857142857) internal successors, (242), 7 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:44,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:44,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-01-31 16:04:44,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:45,016 INFO L124 PetriNetUnfolderBase]: 1566/3249 cut-off events. [2024-01-31 16:04:45,017 INFO L125 PetriNetUnfolderBase]: For 20842/21019 co-relation queries the response was YES. [2024-01-31 16:04:45,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13528 conditions, 3249 events. 1566/3249 cut-off events. For 20842/21019 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 22634 event pairs, 505 based on Foata normal form. 67/3017 useless extension candidates. Maximal degree in co-relation 13469. Up to 1548 conditions per place. [2024-01-31 16:04:45,032 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 117 selfloop transitions, 59 changer transitions 0/210 dead transitions. [2024-01-31 16:04:45,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 210 transitions, 2641 flow [2024-01-31 16:04:45,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:04:45,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:04:45,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 243 transitions. [2024-01-31 16:04:45,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6311688311688312 [2024-01-31 16:04:45,034 INFO L175 Difference]: Start difference. First operand has 138 places, 176 transitions, 2124 flow. Second operand 5 states and 243 transitions. [2024-01-31 16:04:45,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 210 transitions, 2641 flow [2024-01-31 16:04:45,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 210 transitions, 2633 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-01-31 16:04:45,061 INFO L231 Difference]: Finished difference. Result has 143 places, 178 transitions, 2265 flow [2024-01-31 16:04:45,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=2116, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2265, PETRI_PLACES=143, PETRI_TRANSITIONS=178} [2024-01-31 16:04:45,062 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 62 predicate places. [2024-01-31 16:04:45,062 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 178 transitions, 2265 flow [2024-01-31 16:04:45,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.57142857142857) internal successors, (242), 7 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:45,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:45,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:45,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-01-31 16:04:45,063 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:04:45,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:45,064 INFO L85 PathProgramCache]: Analyzing trace with hash 2063878690, now seen corresponding path program 2 times [2024-01-31 16:04:45,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:45,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611201042] [2024-01-31 16:04:45,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:45,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:45,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:45,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:45,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:45,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611201042] [2024-01-31 16:04:45,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611201042] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:45,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:45,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:45,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010625072] [2024-01-31 16:04:45,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:45,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:45,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:45,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:45,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:45,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-01-31 16:04:45,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 178 transitions, 2265 flow. Second operand has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:45,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:45,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-01-31 16:04:45,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:45,897 INFO L124 PetriNetUnfolderBase]: 2060/4048 cut-off events. [2024-01-31 16:04:45,897 INFO L125 PetriNetUnfolderBase]: For 23291/23486 co-relation queries the response was YES. [2024-01-31 16:04:45,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17038 conditions, 4048 events. 2060/4048 cut-off events. For 23291/23486 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 27478 event pairs, 658 based on Foata normal form. 74/3816 useless extension candidates. Maximal degree in co-relation 16976. Up to 1590 conditions per place. [2024-01-31 16:04:45,925 INFO L140 encePairwiseOnDemand]: 64/77 looper letters, 139 selfloop transitions, 78 changer transitions 0/240 dead transitions. [2024-01-31 16:04:45,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 240 transitions, 2990 flow [2024-01-31 16:04:45,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:45,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:45,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 276 transitions. [2024-01-31 16:04:45,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5120593692022264 [2024-01-31 16:04:45,926 INFO L175 Difference]: Start difference. First operand has 143 places, 178 transitions, 2265 flow. Second operand 7 states and 276 transitions. [2024-01-31 16:04:45,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 240 transitions, 2990 flow [2024-01-31 16:04:45,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 240 transitions, 2901 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-01-31 16:04:45,965 INFO L231 Difference]: Finished difference. Result has 148 places, 187 transitions, 2445 flow [2024-01-31 16:04:45,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=2186, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2445, PETRI_PLACES=148, PETRI_TRANSITIONS=187} [2024-01-31 16:04:45,966 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 67 predicate places. [2024-01-31 16:04:45,966 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 187 transitions, 2445 flow [2024-01-31 16:04:45,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:45,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:45,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:45,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-01-31 16:04:45,967 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:04:45,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:45,967 INFO L85 PathProgramCache]: Analyzing trace with hash -787722504, now seen corresponding path program 1 times [2024-01-31 16:04:45,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:45,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544842592] [2024-01-31 16:04:45,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:45,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:45,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:46,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:46,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:46,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544842592] [2024-01-31 16:04:46,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544842592] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:46,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:46,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:46,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656671121] [2024-01-31 16:04:46,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:46,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:46,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:46,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:46,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:46,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:04:46,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 187 transitions, 2445 flow. Second operand has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:46,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:46,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:04:46,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:46,887 INFO L124 PetriNetUnfolderBase]: 2244/4288 cut-off events. [2024-01-31 16:04:46,887 INFO L125 PetriNetUnfolderBase]: For 26880/27164 co-relation queries the response was YES. [2024-01-31 16:04:46,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18726 conditions, 4288 events. 2244/4288 cut-off events. For 26880/27164 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 28376 event pairs, 544 based on Foata normal form. 84/4048 useless extension candidates. Maximal degree in co-relation 18662. Up to 1945 conditions per place. [2024-01-31 16:04:46,915 INFO L140 encePairwiseOnDemand]: 67/77 looper letters, 149 selfloop transitions, 71 changer transitions 0/242 dead transitions. [2024-01-31 16:04:46,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 242 transitions, 3121 flow [2024-01-31 16:04:46,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:46,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:46,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 261 transitions. [2024-01-31 16:04:46,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4842300556586271 [2024-01-31 16:04:46,917 INFO L175 Difference]: Start difference. First operand has 148 places, 187 transitions, 2445 flow. Second operand 7 states and 261 transitions. [2024-01-31 16:04:46,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 242 transitions, 3121 flow [2024-01-31 16:04:46,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 242 transitions, 3010 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-01-31 16:04:47,023 INFO L231 Difference]: Finished difference. Result has 152 places, 187 transitions, 2492 flow [2024-01-31 16:04:47,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=2340, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2492, PETRI_PLACES=152, PETRI_TRANSITIONS=187} [2024-01-31 16:04:47,024 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 71 predicate places. [2024-01-31 16:04:47,024 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 187 transitions, 2492 flow [2024-01-31 16:04:47,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:47,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:47,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:47,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-01-31 16:04:47,025 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:04:47,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:47,025 INFO L85 PathProgramCache]: Analyzing trace with hash 304671390, now seen corresponding path program 3 times [2024-01-31 16:04:47,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:47,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461884130] [2024-01-31 16:04:47,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:47,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:47,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:47,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:47,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:47,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461884130] [2024-01-31 16:04:47,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461884130] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:47,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:47,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:47,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978723482] [2024-01-31 16:04:47,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:47,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:47,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:47,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:47,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:47,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-01-31 16:04:47,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 187 transitions, 2492 flow. Second operand has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:47,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:47,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-01-31 16:04:47,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:48,039 INFO L124 PetriNetUnfolderBase]: 2152/4213 cut-off events. [2024-01-31 16:04:48,040 INFO L125 PetriNetUnfolderBase]: For 29184/29401 co-relation queries the response was YES. [2024-01-31 16:04:48,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18743 conditions, 4213 events. 2152/4213 cut-off events. For 29184/29401 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 28747 event pairs, 658 based on Foata normal form. 74/3978 useless extension candidates. Maximal degree in co-relation 18678. Up to 1623 conditions per place. [2024-01-31 16:04:48,072 INFO L140 encePairwiseOnDemand]: 61/77 looper letters, 139 selfloop transitions, 99 changer transitions 0/261 dead transitions. [2024-01-31 16:04:48,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 261 transitions, 3563 flow [2024-01-31 16:04:48,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:48,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:48,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 279 transitions. [2024-01-31 16:04:48,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5176252319109462 [2024-01-31 16:04:48,081 INFO L175 Difference]: Start difference. First operand has 152 places, 187 transitions, 2492 flow. Second operand 7 states and 279 transitions. [2024-01-31 16:04:48,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 261 transitions, 3563 flow [2024-01-31 16:04:48,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 261 transitions, 3393 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-01-31 16:04:48,135 INFO L231 Difference]: Finished difference. Result has 154 places, 212 transitions, 2963 flow [2024-01-31 16:04:48,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=2348, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2963, PETRI_PLACES=154, PETRI_TRANSITIONS=212} [2024-01-31 16:04:48,136 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 73 predicate places. [2024-01-31 16:04:48,136 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 212 transitions, 2963 flow [2024-01-31 16:04:48,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:48,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:48,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:48,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-01-31 16:04:48,137 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:04:48,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:48,137 INFO L85 PathProgramCache]: Analyzing trace with hash -591127240, now seen corresponding path program 2 times [2024-01-31 16:04:48,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:48,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320695685] [2024-01-31 16:04:48,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:48,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:48,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:48,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:48,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:48,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320695685] [2024-01-31 16:04:48,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320695685] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:48,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:48,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:48,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208489184] [2024-01-31 16:04:48,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:48,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:48,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:48,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:48,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:48,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:04:48,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 212 transitions, 2963 flow. Second operand has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:48,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:48,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:04:48,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:49,076 INFO L124 PetriNetUnfolderBase]: 2423/4532 cut-off events. [2024-01-31 16:04:49,077 INFO L125 PetriNetUnfolderBase]: For 31974/32289 co-relation queries the response was YES. [2024-01-31 16:04:49,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21162 conditions, 4532 events. 2423/4532 cut-off events. For 31974/32289 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 29830 event pairs, 564 based on Foata normal form. 43/4186 useless extension candidates. Maximal degree in co-relation 21096. Up to 1968 conditions per place. [2024-01-31 16:04:49,114 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 157 selfloop transitions, 80 changer transitions 0/259 dead transitions. [2024-01-31 16:04:49,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 259 transitions, 3679 flow [2024-01-31 16:04:49,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:49,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:49,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 230 transitions. [2024-01-31 16:04:49,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49783549783549785 [2024-01-31 16:04:49,116 INFO L175 Difference]: Start difference. First operand has 154 places, 212 transitions, 2963 flow. Second operand 6 states and 230 transitions. [2024-01-31 16:04:49,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 259 transitions, 3679 flow [2024-01-31 16:04:49,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 259 transitions, 3477 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-01-31 16:04:49,184 INFO L231 Difference]: Finished difference. Result has 153 places, 212 transitions, 2942 flow [2024-01-31 16:04:49,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=2761, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2942, PETRI_PLACES=153, PETRI_TRANSITIONS=212} [2024-01-31 16:04:49,184 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 72 predicate places. [2024-01-31 16:04:49,185 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 212 transitions, 2942 flow [2024-01-31 16:04:49,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:49,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:49,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:49,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-01-31 16:04:49,185 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:04:49,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:49,186 INFO L85 PathProgramCache]: Analyzing trace with hash -568852684, now seen corresponding path program 3 times [2024-01-31 16:04:49,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:49,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340124889] [2024-01-31 16:04:49,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:49,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:49,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:49,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:49,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:49,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340124889] [2024-01-31 16:04:49,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340124889] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:49,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:49,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:49,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108457100] [2024-01-31 16:04:49,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:49,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:49,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:49,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:49,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:49,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:04:49,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 212 transitions, 2942 flow. Second operand has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:49,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:49,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:04:49,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:50,119 INFO L124 PetriNetUnfolderBase]: 2821/5164 cut-off events. [2024-01-31 16:04:50,119 INFO L125 PetriNetUnfolderBase]: For 35457/35828 co-relation queries the response was YES. [2024-01-31 16:04:50,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23850 conditions, 5164 events. 2821/5164 cut-off events. For 35457/35828 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 34457 event pairs, 630 based on Foata normal form. 124/4891 useless extension candidates. Maximal degree in co-relation 23785. Up to 2095 conditions per place. [2024-01-31 16:04:50,155 INFO L140 encePairwiseOnDemand]: 67/77 looper letters, 187 selfloop transitions, 77 changer transitions 0/286 dead transitions. [2024-01-31 16:04:50,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 286 transitions, 3954 flow [2024-01-31 16:04:50,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:50,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:50,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 259 transitions. [2024-01-31 16:04:50,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4805194805194805 [2024-01-31 16:04:50,157 INFO L175 Difference]: Start difference. First operand has 153 places, 212 transitions, 2942 flow. Second operand 7 states and 259 transitions. [2024-01-31 16:04:50,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 286 transitions, 3954 flow [2024-01-31 16:04:50,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 286 transitions, 3754 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-01-31 16:04:50,224 INFO L231 Difference]: Finished difference. Result has 154 places, 223 transitions, 3039 flow [2024-01-31 16:04:50,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=2772, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3039, PETRI_PLACES=154, PETRI_TRANSITIONS=223} [2024-01-31 16:04:50,225 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 73 predicate places. [2024-01-31 16:04:50,225 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 223 transitions, 3039 flow [2024-01-31 16:04:50,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:50,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:50,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:50,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-01-31 16:04:50,226 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:04:50,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:50,226 INFO L85 PathProgramCache]: Analyzing trace with hash -630634172, now seen corresponding path program 1 times [2024-01-31 16:04:50,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:50,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269227249] [2024-01-31 16:04:50,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:50,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:50,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:50,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:50,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269227249] [2024-01-31 16:04:50,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269227249] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:50,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:50,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:50,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040413860] [2024-01-31 16:04:50,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:50,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:50,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:50,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:50,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:50,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:04:50,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 223 transitions, 3039 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:50,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:50,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:04:50,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:51,160 INFO L124 PetriNetUnfolderBase]: 2905/5204 cut-off events. [2024-01-31 16:04:51,160 INFO L125 PetriNetUnfolderBase]: For 35936/36282 co-relation queries the response was YES. [2024-01-31 16:04:51,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24388 conditions, 5204 events. 2905/5204 cut-off events. For 35936/36282 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 34401 event pairs, 605 based on Foata normal form. 61/4896 useless extension candidates. Maximal degree in co-relation 24323. Up to 2821 conditions per place. [2024-01-31 16:04:51,196 INFO L140 encePairwiseOnDemand]: 66/77 looper letters, 214 selfloop transitions, 76 changer transitions 0/312 dead transitions. [2024-01-31 16:04:51,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 312 transitions, 4340 flow [2024-01-31 16:04:51,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:04:51,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:04:51,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 284 transitions. [2024-01-31 16:04:51,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.461038961038961 [2024-01-31 16:04:51,198 INFO L175 Difference]: Start difference. First operand has 154 places, 223 transitions, 3039 flow. Second operand 8 states and 284 transitions. [2024-01-31 16:04:51,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 312 transitions, 4340 flow [2024-01-31 16:04:51,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 312 transitions, 4252 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-01-31 16:04:51,268 INFO L231 Difference]: Finished difference. Result has 160 places, 238 transitions, 3262 flow [2024-01-31 16:04:51,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=2964, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3262, PETRI_PLACES=160, PETRI_TRANSITIONS=238} [2024-01-31 16:04:51,268 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 79 predicate places. [2024-01-31 16:04:51,269 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 238 transitions, 3262 flow [2024-01-31 16:04:51,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:51,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:51,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:51,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-01-31 16:04:51,269 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:04:51,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:51,270 INFO L85 PathProgramCache]: Analyzing trace with hash -447316722, now seen corresponding path program 4 times [2024-01-31 16:04:51,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:51,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676740168] [2024-01-31 16:04:51,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:51,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:51,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:51,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:51,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:51,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676740168] [2024-01-31 16:04:51,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676740168] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:51,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:51,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:51,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789310068] [2024-01-31 16:04:51,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:51,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:51,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:51,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:51,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:51,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:04:51,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 238 transitions, 3262 flow. Second operand has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:51,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:51,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:04:51,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:52,286 INFO L124 PetriNetUnfolderBase]: 2982/5451 cut-off events. [2024-01-31 16:04:52,287 INFO L125 PetriNetUnfolderBase]: For 39644/39985 co-relation queries the response was YES. [2024-01-31 16:04:52,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25289 conditions, 5451 events. 2982/5451 cut-off events. For 39644/39985 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 36761 event pairs, 686 based on Foata normal form. 122/5199 useless extension candidates. Maximal degree in co-relation 25222. Up to 2254 conditions per place. [2024-01-31 16:04:52,326 INFO L140 encePairwiseOnDemand]: 61/77 looper letters, 161 selfloop transitions, 116 changer transitions 0/299 dead transitions. [2024-01-31 16:04:52,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 299 transitions, 4187 flow [2024-01-31 16:04:52,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:52,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:52,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 264 transitions. [2024-01-31 16:04:52,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-01-31 16:04:52,327 INFO L175 Difference]: Start difference. First operand has 160 places, 238 transitions, 3262 flow. Second operand 7 states and 264 transitions. [2024-01-31 16:04:52,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 299 transitions, 4187 flow [2024-01-31 16:04:52,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 299 transitions, 4100 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-01-31 16:04:52,405 INFO L231 Difference]: Finished difference. Result has 166 places, 244 transitions, 3529 flow [2024-01-31 16:04:52,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=3181, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3529, PETRI_PLACES=166, PETRI_TRANSITIONS=244} [2024-01-31 16:04:52,406 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 85 predicate places. [2024-01-31 16:04:52,406 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 244 transitions, 3529 flow [2024-01-31 16:04:52,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.875) internal successors, (183), 8 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:52,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:52,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:52,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-01-31 16:04:52,407 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:04:52,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:52,407 INFO L85 PathProgramCache]: Analyzing trace with hash -509098210, now seen corresponding path program 2 times [2024-01-31 16:04:52,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:52,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289050939] [2024-01-31 16:04:52,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:52,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:52,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:52,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:52,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:52,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289050939] [2024-01-31 16:04:52,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289050939] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:52,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:52,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:52,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047749830] [2024-01-31 16:04:52,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:52,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:52,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:52,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:52,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:52,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:04:52,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 244 transitions, 3529 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:52,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:52,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:04:52,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:53,513 INFO L124 PetriNetUnfolderBase]: 3020/5418 cut-off events. [2024-01-31 16:04:53,514 INFO L125 PetriNetUnfolderBase]: For 46787/47107 co-relation queries the response was YES. [2024-01-31 16:04:53,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26820 conditions, 5418 events. 3020/5418 cut-off events. For 46787/47107 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 36184 event pairs, 609 based on Foata normal form. 39/5098 useless extension candidates. Maximal degree in co-relation 26750. Up to 2957 conditions per place. [2024-01-31 16:04:53,570 INFO L140 encePairwiseOnDemand]: 63/77 looper letters, 199 selfloop transitions, 99 changer transitions 0/320 dead transitions. [2024-01-31 16:04:53,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 320 transitions, 4758 flow [2024-01-31 16:04:53,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:04:53,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:04:53,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 281 transitions. [2024-01-31 16:04:53,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45616883116883117 [2024-01-31 16:04:53,572 INFO L175 Difference]: Start difference. First operand has 166 places, 244 transitions, 3529 flow. Second operand 8 states and 281 transitions. [2024-01-31 16:04:53,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 320 transitions, 4758 flow [2024-01-31 16:04:53,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 320 transitions, 4540 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-01-31 16:04:53,680 INFO L231 Difference]: Finished difference. Result has 170 places, 264 transitions, 3784 flow [2024-01-31 16:04:53,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=3327, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3784, PETRI_PLACES=170, PETRI_TRANSITIONS=264} [2024-01-31 16:04:53,681 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 89 predicate places. [2024-01-31 16:04:53,681 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 264 transitions, 3784 flow [2024-01-31 16:04:53,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:53,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:53,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:53,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-01-31 16:04:53,681 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:04:53,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:53,682 INFO L85 PathProgramCache]: Analyzing trace with hash 403931656, now seen corresponding path program 3 times [2024-01-31 16:04:53,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:53,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329824890] [2024-01-31 16:04:53,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:53,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:53,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:53,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:53,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:53,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329824890] [2024-01-31 16:04:53,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329824890] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:53,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:53,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:53,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536862133] [2024-01-31 16:04:53,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:53,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:53,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:53,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:53,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:53,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:04:53,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 264 transitions, 3784 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:53,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:53,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:04:53,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:54,741 INFO L124 PetriNetUnfolderBase]: 3116/5578 cut-off events. [2024-01-31 16:04:54,742 INFO L125 PetriNetUnfolderBase]: For 45907/46235 co-relation queries the response was YES. [2024-01-31 16:04:54,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27741 conditions, 5578 events. 3116/5578 cut-off events. For 45907/46235 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 37243 event pairs, 595 based on Foata normal form. 31/5250 useless extension candidates. Maximal degree in co-relation 27669. Up to 2971 conditions per place. [2024-01-31 16:04:54,792 INFO L140 encePairwiseOnDemand]: 65/77 looper letters, 197 selfloop transitions, 119 changer transitions 0/338 dead transitions. [2024-01-31 16:04:54,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 338 transitions, 5019 flow [2024-01-31 16:04:54,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:04:54,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:04:54,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 279 transitions. [2024-01-31 16:04:54,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45292207792207795 [2024-01-31 16:04:54,793 INFO L175 Difference]: Start difference. First operand has 170 places, 264 transitions, 3784 flow. Second operand 8 states and 279 transitions. [2024-01-31 16:04:54,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 338 transitions, 5019 flow [2024-01-31 16:04:54,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 338 transitions, 4909 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-31 16:04:54,885 INFO L231 Difference]: Finished difference. Result has 176 places, 284 transitions, 4159 flow [2024-01-31 16:04:54,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=3687, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4159, PETRI_PLACES=176, PETRI_TRANSITIONS=284} [2024-01-31 16:04:54,885 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 95 predicate places. [2024-01-31 16:04:54,886 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 284 transitions, 4159 flow [2024-01-31 16:04:54,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:54,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:54,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:54,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-01-31 16:04:54,886 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:04:54,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:54,886 INFO L85 PathProgramCache]: Analyzing trace with hash 405124846, now seen corresponding path program 4 times [2024-01-31 16:04:54,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:54,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755074347] [2024-01-31 16:04:54,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:54,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:55,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:55,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:55,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755074347] [2024-01-31 16:04:55,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755074347] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:55,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:55,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:55,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209506785] [2024-01-31 16:04:55,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:55,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:55,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:55,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:55,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:55,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:04:55,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 284 transitions, 4159 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:55,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:55,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:04:55,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:55,991 INFO L124 PetriNetUnfolderBase]: 3146/5628 cut-off events. [2024-01-31 16:04:55,992 INFO L125 PetriNetUnfolderBase]: For 50325/50661 co-relation queries the response was YES. [2024-01-31 16:04:56,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28818 conditions, 5628 events. 3146/5628 cut-off events. For 50325/50661 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 37628 event pairs, 615 based on Foata normal form. 25/5294 useless extension candidates. Maximal degree in co-relation 28744. Up to 2983 conditions per place. [2024-01-31 16:04:56,043 INFO L140 encePairwiseOnDemand]: 65/77 looper letters, 198 selfloop transitions, 124 changer transitions 0/344 dead transitions. [2024-01-31 16:04:56,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 344 transitions, 5315 flow [2024-01-31 16:04:56,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:04:56,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:04:56,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 278 transitions. [2024-01-31 16:04:56,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4512987012987013 [2024-01-31 16:04:56,045 INFO L175 Difference]: Start difference. First operand has 176 places, 284 transitions, 4159 flow. Second operand 8 states and 278 transitions. [2024-01-31 16:04:56,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 344 transitions, 5315 flow [2024-01-31 16:04:56,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 344 transitions, 5160 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 16:04:56,153 INFO L231 Difference]: Finished difference. Result has 181 places, 292 transitions, 4405 flow [2024-01-31 16:04:56,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=4010, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4405, PETRI_PLACES=181, PETRI_TRANSITIONS=292} [2024-01-31 16:04:56,154 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 100 predicate places. [2024-01-31 16:04:56,154 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 292 transitions, 4405 flow [2024-01-31 16:04:56,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:56,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:56,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:56,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-01-31 16:04:56,154 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:04:56,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:56,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1714653069, now seen corresponding path program 1 times [2024-01-31 16:04:56,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:56,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574385227] [2024-01-31 16:04:56,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:56,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:56,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:56,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:56,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:56,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574385227] [2024-01-31 16:04:56,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574385227] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:56,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:56,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:04:56,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816191778] [2024-01-31 16:04:56,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:56,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:56,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:56,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:56,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:56,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-01-31 16:04:56,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 292 transitions, 4405 flow. Second operand has 7 states, 7 states have (on average 34.714285714285715) internal successors, (243), 7 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:56,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:56,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-01-31 16:04:56,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:57,021 INFO L124 PetriNetUnfolderBase]: 2399/4768 cut-off events. [2024-01-31 16:04:57,022 INFO L125 PetriNetUnfolderBase]: For 52223/52681 co-relation queries the response was YES. [2024-01-31 16:04:57,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24986 conditions, 4768 events. 2399/4768 cut-off events. For 52223/52681 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 34849 event pairs, 672 based on Foata normal form. 76/4517 useless extension candidates. Maximal degree in co-relation 24910. Up to 3496 conditions per place. [2024-01-31 16:04:57,061 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 244 selfloop transitions, 36 changer transitions 0/334 dead transitions. [2024-01-31 16:04:57,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 334 transitions, 5259 flow [2024-01-31 16:04:57,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:57,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:57,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 305 transitions. [2024-01-31 16:04:57,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5658627087198516 [2024-01-31 16:04:57,064 INFO L175 Difference]: Start difference. First operand has 181 places, 292 transitions, 4405 flow. Second operand 7 states and 305 transitions. [2024-01-31 16:04:57,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 334 transitions, 5259 flow [2024-01-31 16:04:57,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 334 transitions, 5023 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-01-31 16:04:57,153 INFO L231 Difference]: Finished difference. Result has 185 places, 306 transitions, 4445 flow [2024-01-31 16:04:57,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=4171, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4445, PETRI_PLACES=185, PETRI_TRANSITIONS=306} [2024-01-31 16:04:57,154 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 104 predicate places. [2024-01-31 16:04:57,154 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 306 transitions, 4445 flow [2024-01-31 16:04:57,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.714285714285715) internal successors, (243), 7 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:57,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:57,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:57,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-01-31 16:04:57,155 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:04:57,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:57,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1418014083, now seen corresponding path program 1 times [2024-01-31 16:04:57,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:57,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925828791] [2024-01-31 16:04:57,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:57,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:57,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:57,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:57,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:57,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925828791] [2024-01-31 16:04:57,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925828791] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:57,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:57,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:57,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562955195] [2024-01-31 16:04:57,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:57,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:57,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:57,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:57,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:57,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:04:57,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 306 transitions, 4445 flow. Second operand has 8 states, 8 states have (on average 23.0) internal successors, (184), 8 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:57,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:57,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:04:57,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:58,266 INFO L124 PetriNetUnfolderBase]: 2961/5412 cut-off events. [2024-01-31 16:04:58,267 INFO L125 PetriNetUnfolderBase]: For 51831/52183 co-relation queries the response was YES. [2024-01-31 16:04:58,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27847 conditions, 5412 events. 2961/5412 cut-off events. For 51831/52183 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 36216 event pairs, 663 based on Foata normal form. 102/5116 useless extension candidates. Maximal degree in co-relation 27768. Up to 2484 conditions per place. [2024-01-31 16:04:58,316 INFO L140 encePairwiseOnDemand]: 65/77 looper letters, 249 selfloop transitions, 107 changer transitions 0/378 dead transitions. [2024-01-31 16:04:58,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 378 transitions, 5805 flow [2024-01-31 16:04:58,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:58,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:58,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 261 transitions. [2024-01-31 16:04:58,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4842300556586271 [2024-01-31 16:04:58,317 INFO L175 Difference]: Start difference. First operand has 185 places, 306 transitions, 4445 flow. Second operand 7 states and 261 transitions. [2024-01-31 16:04:58,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 378 transitions, 5805 flow [2024-01-31 16:04:58,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 378 transitions, 5739 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-01-31 16:04:58,415 INFO L231 Difference]: Finished difference. Result has 191 places, 318 transitions, 4891 flow [2024-01-31 16:04:58,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=4381, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4891, PETRI_PLACES=191, PETRI_TRANSITIONS=318} [2024-01-31 16:04:58,416 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 110 predicate places. [2024-01-31 16:04:58,416 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 318 transitions, 4891 flow [2024-01-31 16:04:58,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.0) internal successors, (184), 8 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:58,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:58,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:58,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-01-31 16:04:58,417 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:04:58,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:58,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1652303135, now seen corresponding path program 1 times [2024-01-31 16:04:58,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:58,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700221514] [2024-01-31 16:04:58,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:58,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:58,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:58,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:58,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:58,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700221514] [2024-01-31 16:04:58,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700221514] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:58,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:58,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:58,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937655525] [2024-01-31 16:04:58,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:58,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:58,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:58,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:58,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:58,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-01-31 16:04:58,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 318 transitions, 4891 flow. Second operand has 9 states, 9 states have (on average 34.44444444444444) internal successors, (310), 9 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:58,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:58,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-01-31 16:04:58,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:59,550 INFO L124 PetriNetUnfolderBase]: 2267/4544 cut-off events. [2024-01-31 16:04:59,550 INFO L125 PetriNetUnfolderBase]: For 56749/57252 co-relation queries the response was YES. [2024-01-31 16:04:59,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25181 conditions, 4544 events. 2267/4544 cut-off events. For 56749/57252 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 33140 event pairs, 422 based on Foata normal form. 62/4296 useless extension candidates. Maximal degree in co-relation 25100. Up to 2085 conditions per place. [2024-01-31 16:04:59,591 INFO L140 encePairwiseOnDemand]: 67/77 looper letters, 183 selfloop transitions, 140 changer transitions 0/377 dead transitions. [2024-01-31 16:04:59,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 377 transitions, 6260 flow [2024-01-31 16:04:59,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:59,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:59,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 317 transitions. [2024-01-31 16:04:59,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.588126159554731 [2024-01-31 16:04:59,593 INFO L175 Difference]: Start difference. First operand has 191 places, 318 transitions, 4891 flow. Second operand 7 states and 317 transitions. [2024-01-31 16:04:59,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 377 transitions, 6260 flow [2024-01-31 16:04:59,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 377 transitions, 6022 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-01-31 16:04:59,705 INFO L231 Difference]: Finished difference. Result has 195 places, 341 transitions, 5522 flow [2024-01-31 16:04:59,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=4679, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5522, PETRI_PLACES=195, PETRI_TRANSITIONS=341} [2024-01-31 16:04:59,706 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 114 predicate places. [2024-01-31 16:04:59,706 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 341 transitions, 5522 flow [2024-01-31 16:04:59,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 34.44444444444444) internal successors, (310), 9 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:59,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:59,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:59,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-01-31 16:04:59,707 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:04:59,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:59,707 INFO L85 PathProgramCache]: Analyzing trace with hash 478673720, now seen corresponding path program 1 times [2024-01-31 16:04:59,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:59,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424315329] [2024-01-31 16:04:59,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:59,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:59,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:59,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:59,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:59,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424315329] [2024-01-31 16:04:59,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424315329] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:59,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:59,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:59,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968928925] [2024-01-31 16:04:59,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:59,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:04:59,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:59,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:04:59,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:04:59,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:04:59,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 341 transitions, 5522 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:59,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:59,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:04:59,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:01,086 INFO L124 PetriNetUnfolderBase]: 3235/5999 cut-off events. [2024-01-31 16:05:01,087 INFO L125 PetriNetUnfolderBase]: For 67250/67646 co-relation queries the response was YES. [2024-01-31 16:05:01,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32538 conditions, 5999 events. 3235/5999 cut-off events. For 67250/67646 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 41521 event pairs, 870 based on Foata normal form. 47/5729 useless extension candidates. Maximal degree in co-relation 32454. Up to 2730 conditions per place. [2024-01-31 16:05:01,130 INFO L140 encePairwiseOnDemand]: 64/77 looper letters, 266 selfloop transitions, 132 changer transitions 0/420 dead transitions. [2024-01-31 16:05:01,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 420 transitions, 6947 flow [2024-01-31 16:05:01,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:01,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:01,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 296 transitions. [2024-01-31 16:05:01,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4805194805194805 [2024-01-31 16:05:01,140 INFO L175 Difference]: Start difference. First operand has 195 places, 341 transitions, 5522 flow. Second operand 8 states and 296 transitions. [2024-01-31 16:05:01,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 420 transitions, 6947 flow [2024-01-31 16:05:01,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 420 transitions, 6792 flow, removed 36 selfloop flow, removed 2 redundant places. [2024-01-31 16:05:01,276 INFO L231 Difference]: Finished difference. Result has 202 places, 349 transitions, 5804 flow [2024-01-31 16:05:01,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=5420, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5804, PETRI_PLACES=202, PETRI_TRANSITIONS=349} [2024-01-31 16:05:01,277 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 121 predicate places. [2024-01-31 16:05:01,277 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 349 transitions, 5804 flow [2024-01-31 16:05:01,277 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) [2024-01-31 16:05:01,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:01,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:01,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-01-31 16:05:01,278 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:05:01,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:01,278 INFO L85 PathProgramCache]: Analyzing trace with hash -2049937166, now seen corresponding path program 1 times [2024-01-31 16:05:01,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:01,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028020203] [2024-01-31 16:05:01,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:01,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:01,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:01,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:01,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:01,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028020203] [2024-01-31 16:05:01,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028020203] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:01,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:01,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:05:01,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444238633] [2024-01-31 16:05:01,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:01,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:05:01,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:01,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:05:01,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:05:01,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-01-31 16:05:01,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 349 transitions, 5804 flow. Second operand has 7 states, 7 states have (on average 34.714285714285715) internal successors, (243), 7 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:01,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:01,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-01-31 16:05:01,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:02,257 INFO L124 PetriNetUnfolderBase]: 2452/4952 cut-off events. [2024-01-31 16:05:02,258 INFO L125 PetriNetUnfolderBase]: For 69557/70151 co-relation queries the response was YES. [2024-01-31 16:05:02,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27879 conditions, 4952 events. 2452/4952 cut-off events. For 69557/70151 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 36988 event pairs, 551 based on Foata normal form. 87/4786 useless extension candidates. Maximal degree in co-relation 27793. Up to 2117 conditions per place. [2024-01-31 16:05:02,304 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 212 selfloop transitions, 130 changer transitions 0/396 dead transitions. [2024-01-31 16:05:02,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 396 transitions, 6939 flow [2024-01-31 16:05:02,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:02,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:02,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 314 transitions. [2024-01-31 16:05:02,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5825602968460112 [2024-01-31 16:05:02,305 INFO L175 Difference]: Start difference. First operand has 202 places, 349 transitions, 5804 flow. Second operand 7 states and 314 transitions. [2024-01-31 16:05:02,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 396 transitions, 6939 flow [2024-01-31 16:05:02,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 396 transitions, 6824 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-01-31 16:05:02,447 INFO L231 Difference]: Finished difference. Result has 208 places, 361 transitions, 6251 flow [2024-01-31 16:05:02,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=5691, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6251, PETRI_PLACES=208, PETRI_TRANSITIONS=361} [2024-01-31 16:05:02,448 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 127 predicate places. [2024-01-31 16:05:02,448 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 361 transitions, 6251 flow [2024-01-31 16:05:02,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.714285714285715) internal successors, (243), 7 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:02,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:02,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:02,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-01-31 16:05:02,448 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:05:02,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:02,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1994590140, now seen corresponding path program 2 times [2024-01-31 16:05:02,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:02,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296800772] [2024-01-31 16:05:02,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:02,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:02,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:02,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:02,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:02,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296800772] [2024-01-31 16:05:02,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296800772] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:02,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:02,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:05:02,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991199551] [2024-01-31 16:05:02,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:02,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:05:02,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:02,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:05:02,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:05:02,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-01-31 16:05:02,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 361 transitions, 6251 flow. Second operand has 7 states, 7 states have (on average 34.714285714285715) internal successors, (243), 7 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:02,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:02,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-01-31 16:05:02,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:03,467 INFO L124 PetriNetUnfolderBase]: 2428/4912 cut-off events. [2024-01-31 16:05:03,467 INFO L125 PetriNetUnfolderBase]: For 74110/74684 co-relation queries the response was YES. [2024-01-31 16:05:03,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28396 conditions, 4912 events. 2428/4912 cut-off events. For 74110/74684 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 36657 event pairs, 539 based on Foata normal form. 87/4746 useless extension candidates. Maximal degree in co-relation 28307. Up to 2113 conditions per place. [2024-01-31 16:05:03,507 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 212 selfloop transitions, 129 changer transitions 0/395 dead transitions. [2024-01-31 16:05:03,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 395 transitions, 7205 flow [2024-01-31 16:05:03,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:03,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:03,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 310 transitions. [2024-01-31 16:05:03,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.575139146567718 [2024-01-31 16:05:03,508 INFO L175 Difference]: Start difference. First operand has 208 places, 361 transitions, 6251 flow. Second operand 7 states and 310 transitions. [2024-01-31 16:05:03,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 395 transitions, 7205 flow [2024-01-31 16:05:03,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 395 transitions, 7050 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-01-31 16:05:03,647 INFO L231 Difference]: Finished difference. Result has 212 places, 363 transitions, 6390 flow [2024-01-31 16:05:03,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=6098, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6390, PETRI_PLACES=212, PETRI_TRANSITIONS=363} [2024-01-31 16:05:03,648 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 131 predicate places. [2024-01-31 16:05:03,648 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 363 transitions, 6390 flow [2024-01-31 16:05:03,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.714285714285715) internal successors, (243), 7 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:03,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:03,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:03,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-01-31 16:05:03,649 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:05:03,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:03,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1972351255, now seen corresponding path program 1 times [2024-01-31 16:05:03,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:03,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012016499] [2024-01-31 16:05:03,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:03,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:03,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:03,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:03,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:03,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012016499] [2024-01-31 16:05:03,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012016499] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:03,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:03,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:03,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403253423] [2024-01-31 16:05:03,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:03,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:03,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:03,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:03,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:03,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-01-31 16:05:03,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 363 transitions, 6390 flow. Second operand has 8 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:03,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:03,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-01-31 16:05:03,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:04,809 INFO L124 PetriNetUnfolderBase]: 2706/5311 cut-off events. [2024-01-31 16:05:04,809 INFO L125 PetriNetUnfolderBase]: For 81839/82423 co-relation queries the response was YES. [2024-01-31 16:05:04,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31061 conditions, 5311 events. 2706/5311 cut-off events. For 81839/82423 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 38329 event pairs, 733 based on Foata normal form. 158/5203 useless extension candidates. Maximal degree in co-relation 30971. Up to 2344 conditions per place. [2024-01-31 16:05:04,860 INFO L140 encePairwiseOnDemand]: 67/77 looper letters, 223 selfloop transitions, 132 changer transitions 0/395 dead transitions. [2024-01-31 16:05:04,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 395 transitions, 7328 flow [2024-01-31 16:05:04,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:05:04,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:05:04,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 226 transitions. [2024-01-31 16:05:04,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48917748917748916 [2024-01-31 16:05:04,862 INFO L175 Difference]: Start difference. First operand has 212 places, 363 transitions, 6390 flow. Second operand 6 states and 226 transitions. [2024-01-31 16:05:04,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 395 transitions, 7328 flow [2024-01-31 16:05:05,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 395 transitions, 7117 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-01-31 16:05:05,041 INFO L231 Difference]: Finished difference. Result has 214 places, 363 transitions, 6531 flow [2024-01-31 16:05:05,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=6185, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6531, PETRI_PLACES=214, PETRI_TRANSITIONS=363} [2024-01-31 16:05:05,042 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 133 predicate places. [2024-01-31 16:05:05,042 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 363 transitions, 6531 flow [2024-01-31 16:05:05,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:05,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:05,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:05,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-01-31 16:05:05,043 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:05:05,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:05,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1257525028, now seen corresponding path program 1 times [2024-01-31 16:05:05,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:05,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474684105] [2024-01-31 16:05:05,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:05,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:05,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:05,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:05,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:05,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474684105] [2024-01-31 16:05:05,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474684105] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:05,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:05,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:05,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150953362] [2024-01-31 16:05:05,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:05,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:05,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:05,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:05,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:05,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-01-31 16:05:05,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 363 transitions, 6531 flow. Second operand has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:05,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:05,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-01-31 16:05:05,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:06,179 INFO L124 PetriNetUnfolderBase]: 2730/5372 cut-off events. [2024-01-31 16:05:06,179 INFO L125 PetriNetUnfolderBase]: For 86673/87230 co-relation queries the response was YES. [2024-01-31 16:05:06,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31541 conditions, 5372 events. 2730/5372 cut-off events. For 86673/87230 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 38841 event pairs, 840 based on Foata normal form. 83/5193 useless extension candidates. Maximal degree in co-relation 31450. Up to 4061 conditions per place. [2024-01-31 16:05:06,233 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 324 selfloop transitions, 43 changer transitions 0/407 dead transitions. [2024-01-31 16:05:06,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 407 transitions, 7548 flow [2024-01-31 16:05:06,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:06,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:06,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 275 transitions. [2024-01-31 16:05:06,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-01-31 16:05:06,235 INFO L175 Difference]: Start difference. First operand has 214 places, 363 transitions, 6531 flow. Second operand 8 states and 275 transitions. [2024-01-31 16:05:06,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 407 transitions, 7548 flow [2024-01-31 16:05:06,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 407 transitions, 7266 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-01-31 16:05:06,416 INFO L231 Difference]: Finished difference. Result has 219 places, 375 transitions, 6481 flow [2024-01-31 16:05:06,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=6259, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6481, PETRI_PLACES=219, PETRI_TRANSITIONS=375} [2024-01-31 16:05:06,417 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 138 predicate places. [2024-01-31 16:05:06,417 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 375 transitions, 6481 flow [2024-01-31 16:05:06,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:06,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:06,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:06,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-01-31 16:05:06,418 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:05:06,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:06,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1587052860, now seen corresponding path program 2 times [2024-01-31 16:05:06,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:06,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111822054] [2024-01-31 16:05:06,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:06,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:06,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:06,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:06,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:06,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111822054] [2024-01-31 16:05:06,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111822054] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:06,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:06,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:06,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284603409] [2024-01-31 16:05:06,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:06,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:06,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:06,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:06,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:06,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-01-31 16:05:06,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 375 transitions, 6481 flow. Second operand has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:06,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:06,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-01-31 16:05:06,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:07,538 INFO L124 PetriNetUnfolderBase]: 2748/5394 cut-off events. [2024-01-31 16:05:07,538 INFO L125 PetriNetUnfolderBase]: For 82798/83363 co-relation queries the response was YES. [2024-01-31 16:05:07,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31109 conditions, 5394 events. 2748/5394 cut-off events. For 82798/83363 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 38909 event pairs, 838 based on Foata normal form. 91/5221 useless extension candidates. Maximal degree in co-relation 31016. Up to 4077 conditions per place. [2024-01-31 16:05:07,591 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 324 selfloop transitions, 47 changer transitions 0/411 dead transitions. [2024-01-31 16:05:07,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 411 transitions, 7410 flow [2024-01-31 16:05:07,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:07,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:07,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 275 transitions. [2024-01-31 16:05:07,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-01-31 16:05:07,592 INFO L175 Difference]: Start difference. First operand has 219 places, 375 transitions, 6481 flow. Second operand 8 states and 275 transitions. [2024-01-31 16:05:07,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 411 transitions, 7410 flow [2024-01-31 16:05:07,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 411 transitions, 7354 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-01-31 16:05:07,852 INFO L231 Difference]: Finished difference. Result has 224 places, 377 transitions, 6539 flow [2024-01-31 16:05:07,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=6427, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6539, PETRI_PLACES=224, PETRI_TRANSITIONS=377} [2024-01-31 16:05:07,852 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 143 predicate places. [2024-01-31 16:05:07,853 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 377 transitions, 6539 flow [2024-01-31 16:05:07,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:07,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:07,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:07,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-01-31 16:05:07,853 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:05:07,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:07,854 INFO L85 PathProgramCache]: Analyzing trace with hash 2020706910, now seen corresponding path program 3 times [2024-01-31 16:05:07,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:07,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915733915] [2024-01-31 16:05:07,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:07,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:07,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:08,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:08,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:08,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915733915] [2024-01-31 16:05:08,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915733915] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:08,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:08,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:08,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693172519] [2024-01-31 16:05:08,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:08,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:08,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:08,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:08,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:08,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-01-31 16:05:08,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 377 transitions, 6539 flow. Second operand has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:08,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:08,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-01-31 16:05:08,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:08,966 INFO L124 PetriNetUnfolderBase]: 2742/5384 cut-off events. [2024-01-31 16:05:08,966 INFO L125 PetriNetUnfolderBase]: For 83648/84213 co-relation queries the response was YES. [2024-01-31 16:05:08,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31122 conditions, 5384 events. 2742/5384 cut-off events. For 83648/84213 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 38820 event pairs, 838 based on Foata normal form. 91/5211 useless extension candidates. Maximal degree in co-relation 31028. Up to 4077 conditions per place. [2024-01-31 16:05:09,015 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 323 selfloop transitions, 49 changer transitions 0/412 dead transitions. [2024-01-31 16:05:09,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 412 transitions, 7455 flow [2024-01-31 16:05:09,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:09,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:09,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 275 transitions. [2024-01-31 16:05:09,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-01-31 16:05:09,016 INFO L175 Difference]: Start difference. First operand has 224 places, 377 transitions, 6539 flow. Second operand 8 states and 275 transitions. [2024-01-31 16:05:09,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 412 transitions, 7455 flow [2024-01-31 16:05:09,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 412 transitions, 7392 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-01-31 16:05:09,199 INFO L231 Difference]: Finished difference. Result has 228 places, 377 transitions, 6579 flow [2024-01-31 16:05:09,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=6476, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6579, PETRI_PLACES=228, PETRI_TRANSITIONS=377} [2024-01-31 16:05:09,200 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 147 predicate places. [2024-01-31 16:05:09,200 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 377 transitions, 6579 flow [2024-01-31 16:05:09,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:09,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:09,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:09,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-01-31 16:05:09,203 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:05:09,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:09,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1007245532, now seen corresponding path program 4 times [2024-01-31 16:05:09,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:09,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900356629] [2024-01-31 16:05:09,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:09,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:09,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:09,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:09,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:09,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900356629] [2024-01-31 16:05:09,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900356629] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:09,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:09,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:09,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497582909] [2024-01-31 16:05:09,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:09,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:09,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:09,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:09,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:09,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-01-31 16:05:09,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 377 transitions, 6579 flow. Second operand has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:09,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:09,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-01-31 16:05:09,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:10,451 INFO L124 PetriNetUnfolderBase]: 2724/5341 cut-off events. [2024-01-31 16:05:10,451 INFO L125 PetriNetUnfolderBase]: For 84673/85257 co-relation queries the response was YES. [2024-01-31 16:05:10,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30957 conditions, 5341 events. 2724/5341 cut-off events. For 84673/85257 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 38593 event pairs, 871 based on Foata normal form. 83/5158 useless extension candidates. Maximal degree in co-relation 30863. Up to 4065 conditions per place. [2024-01-31 16:05:10,501 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 322 selfloop transitions, 49 changer transitions 0/411 dead transitions. [2024-01-31 16:05:10,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 411 transitions, 7542 flow [2024-01-31 16:05:10,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:10,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:10,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 271 transitions. [2024-01-31 16:05:10,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43993506493506496 [2024-01-31 16:05:10,502 INFO L175 Difference]: Start difference. First operand has 228 places, 377 transitions, 6579 flow. Second operand 8 states and 271 transitions. [2024-01-31 16:05:10,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 411 transitions, 7542 flow [2024-01-31 16:05:10,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 411 transitions, 7480 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-01-31 16:05:10,681 INFO L231 Difference]: Finished difference. Result has 233 places, 383 transitions, 6702 flow [2024-01-31 16:05:10,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=6521, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6702, PETRI_PLACES=233, PETRI_TRANSITIONS=383} [2024-01-31 16:05:10,681 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 152 predicate places. [2024-01-31 16:05:10,681 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 383 transitions, 6702 flow [2024-01-31 16:05:10,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:10,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:10,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:10,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-01-31 16:05:10,682 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:05:10,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:10,682 INFO L85 PathProgramCache]: Analyzing trace with hash -757804611, now seen corresponding path program 1 times [2024-01-31 16:05:10,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:10,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121272620] [2024-01-31 16:05:10,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:10,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:10,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:10,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:10,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:10,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121272620] [2024-01-31 16:05:10,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121272620] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:10,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:10,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:10,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461002551] [2024-01-31 16:05:10,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:10,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:10,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:10,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:10,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:10,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:05:10,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 383 transitions, 6702 flow. Second operand has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:10,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:10,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:05:10,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:11,977 INFO L124 PetriNetUnfolderBase]: 3092/5756 cut-off events. [2024-01-31 16:05:11,977 INFO L125 PetriNetUnfolderBase]: For 83326/83700 co-relation queries the response was YES. [2024-01-31 16:05:12,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32809 conditions, 5756 events. 3092/5756 cut-off events. For 83326/83700 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 39510 event pairs, 721 based on Foata normal form. 35/5485 useless extension candidates. Maximal degree in co-relation 32713. Up to 2466 conditions per place. [2024-01-31 16:05:12,033 INFO L140 encePairwiseOnDemand]: 67/77 looper letters, 290 selfloop transitions, 126 changer transitions 0/442 dead transitions. [2024-01-31 16:05:12,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 442 transitions, 7998 flow [2024-01-31 16:05:12,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:12,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:12,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 280 transitions. [2024-01-31 16:05:12,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-01-31 16:05:12,035 INFO L175 Difference]: Start difference. First operand has 233 places, 383 transitions, 6702 flow. Second operand 8 states and 280 transitions. [2024-01-31 16:05:12,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 442 transitions, 7998 flow [2024-01-31 16:05:12,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 442 transitions, 7946 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:05:12,220 INFO L231 Difference]: Finished difference. Result has 239 places, 383 transitions, 6911 flow [2024-01-31 16:05:12,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=6650, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6911, PETRI_PLACES=239, PETRI_TRANSITIONS=383} [2024-01-31 16:05:12,221 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 158 predicate places. [2024-01-31 16:05:12,221 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 383 transitions, 6911 flow [2024-01-31 16:05:12,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:12,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:12,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:12,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-01-31 16:05:12,221 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:05:12,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:12,222 INFO L85 PathProgramCache]: Analyzing trace with hash -449037657, now seen corresponding path program 2 times [2024-01-31 16:05:12,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:12,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063872846] [2024-01-31 16:05:12,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:12,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:12,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:12,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:12,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:12,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063872846] [2024-01-31 16:05:12,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063872846] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:12,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:12,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:12,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008484453] [2024-01-31 16:05:12,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:12,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:12,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:12,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:12,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:12,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:05:12,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 383 transitions, 6911 flow. Second operand has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:12,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:12,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:05:12,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:13,478 INFO L124 PetriNetUnfolderBase]: 3080/5735 cut-off events. [2024-01-31 16:05:13,479 INFO L125 PetriNetUnfolderBase]: For 88909/89280 co-relation queries the response was YES. [2024-01-31 16:05:13,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33275 conditions, 5735 events. 3080/5735 cut-off events. For 88909/89280 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 39332 event pairs, 721 based on Foata normal form. 27/5452 useless extension candidates. Maximal degree in co-relation 33177. Up to 2466 conditions per place. [2024-01-31 16:05:13,538 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 288 selfloop transitions, 125 changer transitions 0/439 dead transitions. [2024-01-31 16:05:13,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 439 transitions, 8169 flow [2024-01-31 16:05:13,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:13,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:13,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 275 transitions. [2024-01-31 16:05:13,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-01-31 16:05:13,539 INFO L175 Difference]: Start difference. First operand has 239 places, 383 transitions, 6911 flow. Second operand 8 states and 275 transitions. [2024-01-31 16:05:13,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 439 transitions, 8169 flow [2024-01-31 16:05:13,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 439 transitions, 8030 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:05:13,731 INFO L231 Difference]: Finished difference. Result has 245 places, 383 transitions, 7029 flow [2024-01-31 16:05:13,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=6772, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7029, PETRI_PLACES=245, PETRI_TRANSITIONS=383} [2024-01-31 16:05:13,732 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 164 predicate places. [2024-01-31 16:05:13,732 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 383 transitions, 7029 flow [2024-01-31 16:05:13,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:13,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:13,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:13,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-01-31 16:05:13,732 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:05:13,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:13,733 INFO L85 PathProgramCache]: Analyzing trace with hash -903271118, now seen corresponding path program 2 times [2024-01-31 16:05:13,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:13,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697796670] [2024-01-31 16:05:13,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:13,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:13,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:13,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:13,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:13,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697796670] [2024-01-31 16:05:13,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697796670] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:13,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:13,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:13,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232301955] [2024-01-31 16:05:13,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:13,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:13,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:13,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:13,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:13,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:05:14,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 383 transitions, 7029 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:14,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:14,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:05:14,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:15,085 INFO L124 PetriNetUnfolderBase]: 3154/5849 cut-off events. [2024-01-31 16:05:15,085 INFO L125 PetriNetUnfolderBase]: For 96241/96603 co-relation queries the response was YES. [2024-01-31 16:05:15,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33989 conditions, 5849 events. 3154/5849 cut-off events. For 96241/96603 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 40168 event pairs, 689 based on Foata normal form. 63/5611 useless extension candidates. Maximal degree in co-relation 33889. Up to 2497 conditions per place. [2024-01-31 16:05:15,147 INFO L140 encePairwiseOnDemand]: 64/77 looper letters, 258 selfloop transitions, 147 changer transitions 0/431 dead transitions. [2024-01-31 16:05:15,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 431 transitions, 8186 flow [2024-01-31 16:05:15,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:15,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:15,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 250 transitions. [2024-01-31 16:05:15,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46382189239332094 [2024-01-31 16:05:15,148 INFO L175 Difference]: Start difference. First operand has 245 places, 383 transitions, 7029 flow. Second operand 7 states and 250 transitions. [2024-01-31 16:05:15,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 431 transitions, 8186 flow [2024-01-31 16:05:15,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 431 transitions, 7870 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-01-31 16:05:15,352 INFO L231 Difference]: Finished difference. Result has 246 places, 392 transitions, 7199 flow [2024-01-31 16:05:15,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=6725, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7199, PETRI_PLACES=246, PETRI_TRANSITIONS=392} [2024-01-31 16:05:15,353 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 165 predicate places. [2024-01-31 16:05:15,353 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 392 transitions, 7199 flow [2024-01-31 16:05:15,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:15,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:15,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:15,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-01-31 16:05:15,353 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:05:15,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:15,354 INFO L85 PathProgramCache]: Analyzing trace with hash -666530346, now seen corresponding path program 3 times [2024-01-31 16:05:15,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:15,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346538173] [2024-01-31 16:05:15,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:15,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:15,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:15,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:15,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:15,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346538173] [2024-01-31 16:05:15,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346538173] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:15,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:15,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:15,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290518104] [2024-01-31 16:05:15,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:15,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:15,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:15,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:15,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:15,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:05:15,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 392 transitions, 7199 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:15,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:15,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:05:15,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:16,717 INFO L124 PetriNetUnfolderBase]: 3312/6135 cut-off events. [2024-01-31 16:05:16,717 INFO L125 PetriNetUnfolderBase]: For 99891/100261 co-relation queries the response was YES. [2024-01-31 16:05:16,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36119 conditions, 6135 events. 3312/6135 cut-off events. For 99891/100261 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 42420 event pairs, 676 based on Foata normal form. 47/5881 useless extension candidates. Maximal degree in co-relation 36017. Up to 2528 conditions per place. [2024-01-31 16:05:16,789 INFO L140 encePairwiseOnDemand]: 66/77 looper letters, 239 selfloop transitions, 182 changer transitions 0/447 dead transitions. [2024-01-31 16:05:16,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 447 transitions, 8457 flow [2024-01-31 16:05:16,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:16,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:16,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 251 transitions. [2024-01-31 16:05:16,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46567717996289426 [2024-01-31 16:05:16,790 INFO L175 Difference]: Start difference. First operand has 246 places, 392 transitions, 7199 flow. Second operand 7 states and 251 transitions. [2024-01-31 16:05:16,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 447 transitions, 8457 flow [2024-01-31 16:05:16,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 447 transitions, 8308 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-01-31 16:05:17,002 INFO L231 Difference]: Finished difference. Result has 251 places, 407 transitions, 7705 flow [2024-01-31 16:05:17,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=7064, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7705, PETRI_PLACES=251, PETRI_TRANSITIONS=407} [2024-01-31 16:05:17,003 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 170 predicate places. [2024-01-31 16:05:17,003 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 407 transitions, 7705 flow [2024-01-31 16:05:17,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:17,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:17,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:17,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-01-31 16:05:17,004 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:05:17,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:17,004 INFO L85 PathProgramCache]: Analyzing trace with hash -733750560, now seen corresponding path program 4 times [2024-01-31 16:05:17,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:17,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138750024] [2024-01-31 16:05:17,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:17,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:17,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:17,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:17,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:17,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138750024] [2024-01-31 16:05:17,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138750024] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:17,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:17,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:17,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405670785] [2024-01-31 16:05:17,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:17,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:17,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:17,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:17,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:17,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:05:17,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 407 transitions, 7705 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:17,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:17,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:05:17,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:18,400 INFO L124 PetriNetUnfolderBase]: 3352/6207 cut-off events. [2024-01-31 16:05:18,400 INFO L125 PetriNetUnfolderBase]: For 107700/108080 co-relation queries the response was YES. [2024-01-31 16:05:18,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37709 conditions, 6207 events. 3352/6207 cut-off events. For 107700/108080 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 43038 event pairs, 695 based on Foata normal form. 39/5945 useless extension candidates. Maximal degree in co-relation 37605. Up to 2552 conditions per place. [2024-01-31 16:05:18,472 INFO L140 encePairwiseOnDemand]: 66/77 looper letters, 234 selfloop transitions, 190 changer transitions 0/450 dead transitions. [2024-01-31 16:05:18,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 450 transitions, 8868 flow [2024-01-31 16:05:18,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:18,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:18,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 247 transitions. [2024-01-31 16:05:18,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4582560296846011 [2024-01-31 16:05:18,474 INFO L175 Difference]: Start difference. First operand has 251 places, 407 transitions, 7705 flow. Second operand 7 states and 247 transitions. [2024-01-31 16:05:18,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 450 transitions, 8868 flow [2024-01-31 16:05:18,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 450 transitions, 8529 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-01-31 16:05:18,689 INFO L231 Difference]: Finished difference. Result has 247 places, 414 transitions, 7902 flow [2024-01-31 16:05:18,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=7350, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7902, PETRI_PLACES=247, PETRI_TRANSITIONS=414} [2024-01-31 16:05:18,689 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 166 predicate places. [2024-01-31 16:05:18,690 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 414 transitions, 7902 flow [2024-01-31 16:05:18,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:18,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:18,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:18,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-01-31 16:05:18,690 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:05:18,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:18,690 INFO L85 PathProgramCache]: Analyzing trace with hash 381716293, now seen corresponding path program 3 times [2024-01-31 16:05:18,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:18,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686221833] [2024-01-31 16:05:18,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:18,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:18,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:18,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:18,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:18,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686221833] [2024-01-31 16:05:18,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686221833] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:18,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:18,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:18,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49998316] [2024-01-31 16:05:18,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:18,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:18,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:18,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:18,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:18,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:05:18,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 414 transitions, 7902 flow. Second operand has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:18,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:18,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:05:18,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:20,042 INFO L124 PetriNetUnfolderBase]: 3344/6203 cut-off events. [2024-01-31 16:05:20,042 INFO L125 PetriNetUnfolderBase]: For 112189/112589 co-relation queries the response was YES. [2024-01-31 16:05:20,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38293 conditions, 6203 events. 3344/6203 cut-off events. For 112189/112589 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 42987 event pairs, 804 based on Foata normal form. 78/5986 useless extension candidates. Maximal degree in co-relation 38195. Up to 2564 conditions per place. [2024-01-31 16:05:20,104 INFO L140 encePairwiseOnDemand]: 64/77 looper letters, 264 selfloop transitions, 168 changer transitions 0/458 dead transitions. [2024-01-31 16:05:20,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 458 transitions, 9154 flow [2024-01-31 16:05:20,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:20,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:20,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 277 transitions. [2024-01-31 16:05:20,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4496753246753247 [2024-01-31 16:05:20,105 INFO L175 Difference]: Start difference. First operand has 247 places, 414 transitions, 7902 flow. Second operand 8 states and 277 transitions. [2024-01-31 16:05:20,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 458 transitions, 9154 flow [2024-01-31 16:05:20,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 458 transitions, 8817 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-01-31 16:05:20,327 INFO L231 Difference]: Finished difference. Result has 250 places, 414 transitions, 7931 flow [2024-01-31 16:05:20,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=7581, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7931, PETRI_PLACES=250, PETRI_TRANSITIONS=414} [2024-01-31 16:05:20,328 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 169 predicate places. [2024-01-31 16:05:20,329 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 414 transitions, 7931 flow [2024-01-31 16:05:20,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:20,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:20,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:20,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-01-31 16:05:20,329 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:05:20,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:20,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1217533021, now seen corresponding path program 4 times [2024-01-31 16:05:20,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:20,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264809864] [2024-01-31 16:05:20,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:20,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:20,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:20,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:20,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:20,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264809864] [2024-01-31 16:05:20,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264809864] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:20,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:20,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:20,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668185206] [2024-01-31 16:05:20,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:20,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:20,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:20,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:20,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:20,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:05:20,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 414 transitions, 7931 flow. Second operand has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:20,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:20,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:05:20,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:21,745 INFO L124 PetriNetUnfolderBase]: 3368/6243 cut-off events. [2024-01-31 16:05:21,745 INFO L125 PetriNetUnfolderBase]: For 110376/110764 co-relation queries the response was YES. [2024-01-31 16:05:21,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38167 conditions, 6243 events. 3368/6243 cut-off events. For 110376/110764 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 43264 event pairs, 804 based on Foata normal form. 62/6004 useless extension candidates. Maximal degree in co-relation 38069. Up to 2568 conditions per place. [2024-01-31 16:05:21,794 INFO L140 encePairwiseOnDemand]: 65/77 looper letters, 268 selfloop transitions, 166 changer transitions 0/460 dead transitions. [2024-01-31 16:05:21,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 460 transitions, 9212 flow [2024-01-31 16:05:21,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:21,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:21,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 275 transitions. [2024-01-31 16:05:21,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-01-31 16:05:21,795 INFO L175 Difference]: Start difference. First operand has 250 places, 414 transitions, 7931 flow. Second operand 8 states and 275 transitions. [2024-01-31 16:05:21,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 460 transitions, 9212 flow [2024-01-31 16:05:21,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 460 transitions, 8892 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-01-31 16:05:21,975 INFO L231 Difference]: Finished difference. Result has 251 places, 416 transitions, 7986 flow [2024-01-31 16:05:21,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=7617, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7986, PETRI_PLACES=251, PETRI_TRANSITIONS=416} [2024-01-31 16:05:21,976 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 170 predicate places. [2024-01-31 16:05:21,976 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 416 transitions, 7986 flow [2024-01-31 16:05:21,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:21,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:21,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:21,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-01-31 16:05:21,977 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:05:21,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:21,977 INFO L85 PathProgramCache]: Analyzing trace with hash -468843053, now seen corresponding path program 2 times [2024-01-31 16:05:21,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:21,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422156193] [2024-01-31 16:05:21,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:21,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:21,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:22,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:22,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:22,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422156193] [2024-01-31 16:05:22,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422156193] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:22,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:22,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:22,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520915461] [2024-01-31 16:05:22,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:22,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:22,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:22,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:22,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:22,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:05:22,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 416 transitions, 7986 flow. Second operand has 8 states, 8 states have (on average 23.0) internal successors, (184), 8 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:22,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:22,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:05:22,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:23,341 INFO L124 PetriNetUnfolderBase]: 3486/6437 cut-off events. [2024-01-31 16:05:23,341 INFO L125 PetriNetUnfolderBase]: For 112105/112497 co-relation queries the response was YES. [2024-01-31 16:05:23,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39123 conditions, 6437 events. 3486/6437 cut-off events. For 112105/112497 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 44886 event pairs, 885 based on Foata normal form. 57/6209 useless extension candidates. Maximal degree in co-relation 39025. Up to 3443 conditions per place. [2024-01-31 16:05:23,403 INFO L140 encePairwiseOnDemand]: 61/77 looper letters, 275 selfloop transitions, 163 changer transitions 0/464 dead transitions. [2024-01-31 16:05:23,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 464 transitions, 9247 flow [2024-01-31 16:05:23,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:23,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:23,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 258 transitions. [2024-01-31 16:05:23,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47866419294990725 [2024-01-31 16:05:23,404 INFO L175 Difference]: Start difference. First operand has 251 places, 416 transitions, 7986 flow. Second operand 7 states and 258 transitions. [2024-01-31 16:05:23,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 464 transitions, 9247 flow [2024-01-31 16:05:23,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 464 transitions, 9008 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 16:05:23,607 INFO L231 Difference]: Finished difference. Result has 255 places, 423 transitions, 8268 flow [2024-01-31 16:05:23,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=7747, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8268, PETRI_PLACES=255, PETRI_TRANSITIONS=423} [2024-01-31 16:05:23,607 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 174 predicate places. [2024-01-31 16:05:23,607 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 423 transitions, 8268 flow [2024-01-31 16:05:23,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.0) internal successors, (184), 8 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:23,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:23,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:23,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-01-31 16:05:23,608 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:05:23,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:23,608 INFO L85 PathProgramCache]: Analyzing trace with hash -469495913, now seen corresponding path program 3 times [2024-01-31 16:05:23,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:23,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332081778] [2024-01-31 16:05:23,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:23,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:23,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:23,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:23,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:23,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332081778] [2024-01-31 16:05:23,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332081778] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:23,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:23,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:23,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301615774] [2024-01-31 16:05:23,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:23,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:23,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:23,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:23,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:23,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:05:23,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 423 transitions, 8268 flow. Second operand has 8 states, 8 states have (on average 23.0) internal successors, (184), 8 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:23,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:23,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:05:23,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:24,947 INFO L124 PetriNetUnfolderBase]: 3526/6519 cut-off events. [2024-01-31 16:05:24,948 INFO L125 PetriNetUnfolderBase]: For 119118/119521 co-relation queries the response was YES. [2024-01-31 16:05:24,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40183 conditions, 6519 events. 3526/6519 cut-off events. For 119118/119521 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 45670 event pairs, 871 based on Foata normal form. 57/6291 useless extension candidates. Maximal degree in co-relation 40083. Up to 3467 conditions per place. [2024-01-31 16:05:25,008 INFO L140 encePairwiseOnDemand]: 61/77 looper letters, 275 selfloop transitions, 163 changer transitions 0/464 dead transitions. [2024-01-31 16:05:25,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 464 transitions, 9451 flow [2024-01-31 16:05:25,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:25,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:25,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 251 transitions. [2024-01-31 16:05:25,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46567717996289426 [2024-01-31 16:05:25,009 INFO L175 Difference]: Start difference. First operand has 255 places, 423 transitions, 8268 flow. Second operand 7 states and 251 transitions. [2024-01-31 16:05:25,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 464 transitions, 9451 flow [2024-01-31 16:05:25,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 464 transitions, 9098 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-01-31 16:05:25,223 INFO L231 Difference]: Finished difference. Result has 257 places, 427 transitions, 8310 flow [2024-01-31 16:05:25,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=7927, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8310, PETRI_PLACES=257, PETRI_TRANSITIONS=427} [2024-01-31 16:05:25,223 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 176 predicate places. [2024-01-31 16:05:25,223 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 427 transitions, 8310 flow [2024-01-31 16:05:25,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.0) internal successors, (184), 8 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:25,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:25,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:25,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-01-31 16:05:25,224 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:05:25,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:25,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1517034031, now seen corresponding path program 5 times [2024-01-31 16:05:25,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:25,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867381789] [2024-01-31 16:05:25,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:25,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:25,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:25,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:25,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:25,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867381789] [2024-01-31 16:05:25,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867381789] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:25,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:25,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:25,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920864159] [2024-01-31 16:05:25,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:25,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:25,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:25,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:25,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:25,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:05:25,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 427 transitions, 8310 flow. Second operand has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:25,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:25,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:05:25,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:26,578 INFO L124 PetriNetUnfolderBase]: 3552/6561 cut-off events. [2024-01-31 16:05:26,578 INFO L125 PetriNetUnfolderBase]: For 119144/119547 co-relation queries the response was YES. [2024-01-31 16:05:26,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40318 conditions, 6561 events. 3552/6561 cut-off events. For 119144/119547 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 46090 event pairs, 827 based on Foata normal form. 46/6314 useless extension candidates. Maximal degree in co-relation 40217. Up to 2826 conditions per place. [2024-01-31 16:05:26,649 INFO L140 encePairwiseOnDemand]: 65/77 looper letters, 277 selfloop transitions, 171 changer transitions 0/474 dead transitions. [2024-01-31 16:05:26,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 474 transitions, 9615 flow [2024-01-31 16:05:26,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:26,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:26,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 270 transitions. [2024-01-31 16:05:26,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4383116883116883 [2024-01-31 16:05:26,650 INFO L175 Difference]: Start difference. First operand has 257 places, 427 transitions, 8310 flow. Second operand 8 states and 270 transitions. [2024-01-31 16:05:26,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 474 transitions, 9615 flow [2024-01-31 16:05:26,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 474 transitions, 9445 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-01-31 16:05:26,907 INFO L231 Difference]: Finished difference. Result has 263 places, 434 transitions, 8650 flow [2024-01-31 16:05:26,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=8140, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8650, PETRI_PLACES=263, PETRI_TRANSITIONS=434} [2024-01-31 16:05:26,908 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 182 predicate places. [2024-01-31 16:05:26,908 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 434 transitions, 8650 flow [2024-01-31 16:05:26,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:26,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:26,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:26,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-01-31 16:05:26,909 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:05:26,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:26,909 INFO L85 PathProgramCache]: Analyzing trace with hash 318210719, now seen corresponding path program 1 times [2024-01-31 16:05:26,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:26,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104091546] [2024-01-31 16:05:26,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:26,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:26,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:26,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:26,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:26,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104091546] [2024-01-31 16:05:26,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104091546] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:26,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:26,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:05:26,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253858938] [2024-01-31 16:05:26,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:26,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:05:26,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:26,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:05:26,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:05:26,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-01-31 16:05:26,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 434 transitions, 8650 flow. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:26,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:26,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-01-31 16:05:26,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:27,984 INFO L124 PetriNetUnfolderBase]: 2754/5578 cut-off events. [2024-01-31 16:05:27,985 INFO L125 PetriNetUnfolderBase]: For 132067/132913 co-relation queries the response was YES. [2024-01-31 16:05:28,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35840 conditions, 5578 events. 2754/5578 cut-off events. For 132067/132913 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 43227 event pairs, 457 based on Foata normal form. 189/5348 useless extension candidates. Maximal degree in co-relation 35737. Up to 1813 conditions per place. [2024-01-31 16:05:28,046 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 306 selfloop transitions, 108 changer transitions 0/479 dead transitions. [2024-01-31 16:05:28,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 479 transitions, 10030 flow [2024-01-31 16:05:28,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:05:28,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:05:28,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 199 transitions. [2024-01-31 16:05:28,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6461038961038961 [2024-01-31 16:05:28,048 INFO L175 Difference]: Start difference. First operand has 263 places, 434 transitions, 8650 flow. Second operand 4 states and 199 transitions. [2024-01-31 16:05:28,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 479 transitions, 10030 flow [2024-01-31 16:05:28,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 479 transitions, 9697 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-01-31 16:05:28,270 INFO L231 Difference]: Finished difference. Result has 260 places, 435 transitions, 8690 flow [2024-01-31 16:05:28,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=8353, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=8690, PETRI_PLACES=260, PETRI_TRANSITIONS=435} [2024-01-31 16:05:28,271 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 179 predicate places. [2024-01-31 16:05:28,271 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 435 transitions, 8690 flow [2024-01-31 16:05:28,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:28,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:28,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:28,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-01-31 16:05:28,272 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:05:28,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:28,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1082788193, now seen corresponding path program 2 times [2024-01-31 16:05:28,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:28,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969359221] [2024-01-31 16:05:28,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:28,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:28,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:28,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:28,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:28,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969359221] [2024-01-31 16:05:28,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969359221] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:28,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:28,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:05:28,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783085116] [2024-01-31 16:05:28,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:28,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:05:28,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:28,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:05:28,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:05:28,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-01-31 16:05:28,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 435 transitions, 8690 flow. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:28,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:28,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-01-31 16:05:28,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:29,066 INFO L124 PetriNetUnfolderBase]: 1897/3739 cut-off events. [2024-01-31 16:05:29,066 INFO L125 PetriNetUnfolderBase]: For 118308/118770 co-relation queries the response was YES. [2024-01-31 16:05:29,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28506 conditions, 3739 events. 1897/3739 cut-off events. For 118308/118770 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 27465 event pairs, 409 based on Foata normal form. 165/3639 useless extension candidates. Maximal degree in co-relation 28404. Up to 1494 conditions per place. [2024-01-31 16:05:29,102 INFO L140 encePairwiseOnDemand]: 72/77 looper letters, 280 selfloop transitions, 83 changer transitions 1/429 dead transitions. [2024-01-31 16:05:29,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 429 transitions, 9284 flow [2024-01-31 16:05:29,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:05:29,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:05:29,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 221 transitions. [2024-01-31 16:05:29,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.574025974025974 [2024-01-31 16:05:29,103 INFO L175 Difference]: Start difference. First operand has 260 places, 435 transitions, 8690 flow. Second operand 5 states and 221 transitions. [2024-01-31 16:05:29,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 429 transitions, 9284 flow [2024-01-31 16:05:29,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 429 transitions, 9126 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-01-31 16:05:29,378 INFO L231 Difference]: Finished difference. Result has 261 places, 416 transitions, 8572 flow [2024-01-31 16:05:29,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=8308, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=8572, PETRI_PLACES=261, PETRI_TRANSITIONS=416} [2024-01-31 16:05:29,380 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 180 predicate places. [2024-01-31 16:05:29,381 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 416 transitions, 8572 flow [2024-01-31 16:05:29,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:29,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:29,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:29,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-01-31 16:05:29,381 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:05:29,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:29,382 INFO L85 PathProgramCache]: Analyzing trace with hash -111418173, now seen corresponding path program 1 times [2024-01-31 16:05:29,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:29,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229805745] [2024-01-31 16:05:29,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:29,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:29,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:29,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:29,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:29,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229805745] [2024-01-31 16:05:29,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229805745] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:29,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:29,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:29,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200981107] [2024-01-31 16:05:29,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:29,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:29,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:29,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:29,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:29,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-01-31 16:05:29,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 416 transitions, 8572 flow. Second operand has 8 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:29,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:29,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-01-31 16:05:29,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:30,620 INFO L124 PetriNetUnfolderBase]: 2435/4664 cut-off events. [2024-01-31 16:05:30,620 INFO L125 PetriNetUnfolderBase]: For 130906/131457 co-relation queries the response was YES. [2024-01-31 16:05:30,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34284 conditions, 4664 events. 2435/4664 cut-off events. For 130906/131457 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 33798 event pairs, 298 based on Foata normal form. 107/4621 useless extension candidates. Maximal degree in co-relation 34182. Up to 1693 conditions per place. [2024-01-31 16:05:30,667 INFO L140 encePairwiseOnDemand]: 64/77 looper letters, 347 selfloop transitions, 132 changer transitions 2/528 dead transitions. [2024-01-31 16:05:30,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 528 transitions, 10776 flow [2024-01-31 16:05:30,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:30,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:30,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 302 transitions. [2024-01-31 16:05:30,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4902597402597403 [2024-01-31 16:05:30,668 INFO L175 Difference]: Start difference. First operand has 261 places, 416 transitions, 8572 flow. Second operand 8 states and 302 transitions. [2024-01-31 16:05:30,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 528 transitions, 10776 flow [2024-01-31 16:05:31,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 528 transitions, 10525 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-01-31 16:05:31,063 INFO L231 Difference]: Finished difference. Result has 266 places, 440 transitions, 9115 flow [2024-01-31 16:05:31,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=8400, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9115, PETRI_PLACES=266, PETRI_TRANSITIONS=440} [2024-01-31 16:05:31,064 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 185 predicate places. [2024-01-31 16:05:31,064 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 440 transitions, 9115 flow [2024-01-31 16:05:31,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:31,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:31,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:31,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-01-31 16:05:31,065 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:05:31,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:31,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1563311618, now seen corresponding path program 1 times [2024-01-31 16:05:31,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:31,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625408130] [2024-01-31 16:05:31,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:31,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:31,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:31,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:31,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:31,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625408130] [2024-01-31 16:05:31,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625408130] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:31,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:31,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:31,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84649436] [2024-01-31 16:05:31,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:31,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:31,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:31,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:31,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:31,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-01-31 16:05:31,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 440 transitions, 9115 flow. Second operand has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:31,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:31,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-01-31 16:05:31,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:32,243 INFO L124 PetriNetUnfolderBase]: 2450/4708 cut-off events. [2024-01-31 16:05:32,243 INFO L125 PetriNetUnfolderBase]: For 134567/135097 co-relation queries the response was YES. [2024-01-31 16:05:32,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35205 conditions, 4708 events. 2450/4708 cut-off events. For 134567/135097 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 34077 event pairs, 508 based on Foata normal form. 72/4628 useless extension candidates. Maximal degree in co-relation 35102. Up to 3770 conditions per place. [2024-01-31 16:05:32,292 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 371 selfloop transitions, 45 changer transitions 0/463 dead transitions. [2024-01-31 16:05:32,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 463 transitions, 10110 flow [2024-01-31 16:05:32,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:32,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:32,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 233 transitions. [2024-01-31 16:05:32,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4322820037105751 [2024-01-31 16:05:32,293 INFO L175 Difference]: Start difference. First operand has 266 places, 440 transitions, 9115 flow. Second operand 7 states and 233 transitions. [2024-01-31 16:05:32,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 463 transitions, 10110 flow [2024-01-31 16:05:32,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 463 transitions, 9907 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-01-31 16:05:32,677 INFO L231 Difference]: Finished difference. Result has 269 places, 444 transitions, 9068 flow [2024-01-31 16:05:32,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=8915, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9068, PETRI_PLACES=269, PETRI_TRANSITIONS=444} [2024-01-31 16:05:32,678 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 188 predicate places. [2024-01-31 16:05:32,678 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 444 transitions, 9068 flow [2024-01-31 16:05:32,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:32,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:32,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:32,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-01-31 16:05:32,678 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:05:32,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:32,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1086155980, now seen corresponding path program 2 times [2024-01-31 16:05:32,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:32,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633954966] [2024-01-31 16:05:32,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:32,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:32,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:32,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:32,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:32,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633954966] [2024-01-31 16:05:32,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633954966] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:32,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:32,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:32,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880161327] [2024-01-31 16:05:32,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:32,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:32,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:32,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:32,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:32,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-01-31 16:05:32,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 444 transitions, 9068 flow. Second operand has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:32,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:32,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-01-31 16:05:32,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:33,844 INFO L124 PetriNetUnfolderBase]: 2490/4764 cut-off events. [2024-01-31 16:05:33,844 INFO L125 PetriNetUnfolderBase]: For 131764/132303 co-relation queries the response was YES. [2024-01-31 16:05:33,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34753 conditions, 4764 events. 2490/4764 cut-off events. For 131764/132303 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 34445 event pairs, 500 based on Foata normal form. 78/4684 useless extension candidates. Maximal degree in co-relation 34649. Up to 3825 conditions per place. [2024-01-31 16:05:33,894 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 368 selfloop transitions, 50 changer transitions 0/465 dead transitions. [2024-01-31 16:05:33,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 465 transitions, 10012 flow [2024-01-31 16:05:33,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:33,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:33,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 233 transitions. [2024-01-31 16:05:33,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4322820037105751 [2024-01-31 16:05:33,895 INFO L175 Difference]: Start difference. First operand has 269 places, 444 transitions, 9068 flow. Second operand 7 states and 233 transitions. [2024-01-31 16:05:33,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 465 transitions, 10012 flow [2024-01-31 16:05:34,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 465 transitions, 9945 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-01-31 16:05:34,295 INFO L231 Difference]: Finished difference. Result has 272 places, 445 transitions, 9121 flow [2024-01-31 16:05:34,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=9006, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9121, PETRI_PLACES=272, PETRI_TRANSITIONS=445} [2024-01-31 16:05:34,295 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 191 predicate places. [2024-01-31 16:05:34,296 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 445 transitions, 9121 flow [2024-01-31 16:05:34,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:34,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:34,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:34,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-01-31 16:05:34,296 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:05:34,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:34,297 INFO L85 PathProgramCache]: Analyzing trace with hash -308120678, now seen corresponding path program 3 times [2024-01-31 16:05:34,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:34,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497577536] [2024-01-31 16:05:34,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:34,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:34,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:34,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:34,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:34,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497577536] [2024-01-31 16:05:34,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497577536] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:34,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:34,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:34,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354066444] [2024-01-31 16:05:34,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:34,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:34,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:34,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:34,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:34,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-01-31 16:05:34,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 445 transitions, 9121 flow. Second operand has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:34,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:34,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-01-31 16:05:34,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:35,430 INFO L124 PetriNetUnfolderBase]: 2488/4758 cut-off events. [2024-01-31 16:05:35,430 INFO L125 PetriNetUnfolderBase]: For 132849/133388 co-relation queries the response was YES. [2024-01-31 16:05:35,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34719 conditions, 4758 events. 2488/4758 cut-off events. For 132849/133388 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 34405 event pairs, 500 based on Foata normal form. 78/4678 useless extension candidates. Maximal degree in co-relation 34616. Up to 3825 conditions per place. [2024-01-31 16:05:35,479 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 364 selfloop transitions, 54 changer transitions 0/465 dead transitions. [2024-01-31 16:05:35,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 465 transitions, 10038 flow [2024-01-31 16:05:35,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:35,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:35,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 233 transitions. [2024-01-31 16:05:35,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4322820037105751 [2024-01-31 16:05:35,480 INFO L175 Difference]: Start difference. First operand has 272 places, 445 transitions, 9121 flow. Second operand 7 states and 233 transitions. [2024-01-31 16:05:35,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 465 transitions, 10038 flow [2024-01-31 16:05:35,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 465 transitions, 9945 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-01-31 16:05:35,870 INFO L231 Difference]: Finished difference. Result has 273 places, 445 transitions, 9142 flow [2024-01-31 16:05:35,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=9028, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9142, PETRI_PLACES=273, PETRI_TRANSITIONS=445} [2024-01-31 16:05:35,871 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 192 predicate places. [2024-01-31 16:05:35,871 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 445 transitions, 9142 flow [2024-01-31 16:05:35,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:35,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:35,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:35,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-01-31 16:05:35,872 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:05:35,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:35,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1416480202, now seen corresponding path program 1 times [2024-01-31 16:05:35,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:35,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785826873] [2024-01-31 16:05:35,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:35,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:36,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:36,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:36,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785826873] [2024-01-31 16:05:36,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785826873] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:36,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:36,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:36,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166112524] [2024-01-31 16:05:36,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:36,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:05:36,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:36,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:05:36,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:05:36,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-01-31 16:05:36,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 445 transitions, 9142 flow. Second operand has 7 states, 7 states have (on average 34.857142857142854) internal successors, (244), 7 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:36,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:36,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-01-31 16:05:36,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:36,806 INFO L124 PetriNetUnfolderBase]: 1929/3910 cut-off events. [2024-01-31 16:05:36,807 INFO L125 PetriNetUnfolderBase]: For 124523/124963 co-relation queries the response was YES. [2024-01-31 16:05:36,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29407 conditions, 3910 events. 1929/3910 cut-off events. For 124523/124963 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 29602 event pairs, 343 based on Foata normal form. 54/3784 useless extension candidates. Maximal degree in co-relation 29307. Up to 1327 conditions per place. [2024-01-31 16:05:36,844 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 331 selfloop transitions, 116 changer transitions 2/514 dead transitions. [2024-01-31 16:05:36,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 514 transitions, 10793 flow [2024-01-31 16:05:36,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:05:36,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:05:36,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 279 transitions. [2024-01-31 16:05:36,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6038961038961039 [2024-01-31 16:05:36,845 INFO L175 Difference]: Start difference. First operand has 273 places, 445 transitions, 9142 flow. Second operand 6 states and 279 transitions. [2024-01-31 16:05:36,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 514 transitions, 10793 flow [2024-01-31 16:05:37,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 514 transitions, 10704 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-01-31 16:05:37,141 INFO L231 Difference]: Finished difference. Result has 275 places, 457 transitions, 9486 flow [2024-01-31 16:05:37,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=9053, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=9486, PETRI_PLACES=275, PETRI_TRANSITIONS=457} [2024-01-31 16:05:37,142 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 194 predicate places. [2024-01-31 16:05:37,142 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 457 transitions, 9486 flow [2024-01-31 16:05:37,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.857142857142854) internal successors, (244), 7 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:37,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:37,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:37,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-01-31 16:05:37,142 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:05:37,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:37,142 INFO L85 PathProgramCache]: Analyzing trace with hash 2049721134, now seen corresponding path program 2 times [2024-01-31 16:05:37,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:37,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500961010] [2024-01-31 16:05:37,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:37,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:37,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:37,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:37,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:37,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500961010] [2024-01-31 16:05:37,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500961010] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:37,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:37,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:37,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339604425] [2024-01-31 16:05:37,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:37,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:37,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:37,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:37,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:37,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-01-31 16:05:37,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 457 transitions, 9486 flow. Second operand has 8 states, 8 states have (on average 34.625) internal successors, (277), 8 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:37,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:37,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-01-31 16:05:37,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:38,105 INFO L124 PetriNetUnfolderBase]: 1917/3932 cut-off events. [2024-01-31 16:05:38,105 INFO L125 PetriNetUnfolderBase]: For 127796/128229 co-relation queries the response was YES. [2024-01-31 16:05:38,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30036 conditions, 3932 events. 1917/3932 cut-off events. For 127796/128229 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 29794 event pairs, 325 based on Foata normal form. 42/3844 useless extension candidates. Maximal degree in co-relation 29936. Up to 2863 conditions per place. [2024-01-31 16:05:38,143 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 356 selfloop transitions, 59 changer transitions 0/480 dead transitions. [2024-01-31 16:05:38,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 480 transitions, 10442 flow [2024-01-31 16:05:38,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:38,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:38,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 333 transitions. [2024-01-31 16:05:38,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5405844155844156 [2024-01-31 16:05:38,145 INFO L175 Difference]: Start difference. First operand has 275 places, 457 transitions, 9486 flow. Second operand 8 states and 333 transitions. [2024-01-31 16:05:38,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 480 transitions, 10442 flow [2024-01-31 16:05:38,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 480 transitions, 10360 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-01-31 16:05:38,470 INFO L231 Difference]: Finished difference. Result has 282 places, 457 transitions, 9530 flow [2024-01-31 16:05:38,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=9404, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9530, PETRI_PLACES=282, PETRI_TRANSITIONS=457} [2024-01-31 16:05:38,471 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 201 predicate places. [2024-01-31 16:05:38,471 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 457 transitions, 9530 flow [2024-01-31 16:05:38,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 34.625) internal successors, (277), 8 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:38,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:38,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:38,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-01-31 16:05:38,472 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:05:38,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:38,473 INFO L85 PathProgramCache]: Analyzing trace with hash -330970449, now seen corresponding path program 1 times [2024-01-31 16:05:38,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:38,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609285152] [2024-01-31 16:05:38,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:38,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:38,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:38,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:38,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:38,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609285152] [2024-01-31 16:05:38,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609285152] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:38,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:38,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:38,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366087760] [2024-01-31 16:05:38,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:38,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:38,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:38,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:38,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:38,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:05:38,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 457 transitions, 9530 flow. Second operand has 9 states, 9 states have (on average 22.77777777777778) internal successors, (205), 9 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:38,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:38,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:05:38,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:39,761 INFO L124 PetriNetUnfolderBase]: 2665/4867 cut-off events. [2024-01-31 16:05:39,761 INFO L125 PetriNetUnfolderBase]: For 131735/132148 co-relation queries the response was YES. [2024-01-31 16:05:39,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35921 conditions, 4867 events. 2665/4867 cut-off events. For 131735/132148 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 33697 event pairs, 418 based on Foata normal form. 41/4755 useless extension candidates. Maximal degree in co-relation 35818. Up to 2325 conditions per place. [2024-01-31 16:05:39,809 INFO L140 encePairwiseOnDemand]: 66/77 looper letters, 352 selfloop transitions, 135 changer transitions 0/513 dead transitions. [2024-01-31 16:05:39,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 513 transitions, 11089 flow [2024-01-31 16:05:39,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:39,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:39,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 267 transitions. [2024-01-31 16:05:39,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43344155844155846 [2024-01-31 16:05:39,811 INFO L175 Difference]: Start difference. First operand has 282 places, 457 transitions, 9530 flow. Second operand 8 states and 267 transitions. [2024-01-31 16:05:39,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 513 transitions, 11089 flow [2024-01-31 16:05:40,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 513 transitions, 10982 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-01-31 16:05:40,219 INFO L231 Difference]: Finished difference. Result has 285 places, 458 transitions, 9715 flow [2024-01-31 16:05:40,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=9423, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9715, PETRI_PLACES=285, PETRI_TRANSITIONS=458} [2024-01-31 16:05:40,220 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 204 predicate places. [2024-01-31 16:05:40,220 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 458 transitions, 9715 flow [2024-01-31 16:05:40,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.77777777777778) internal successors, (205), 9 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:40,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:40,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:40,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-01-31 16:05:40,220 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:05:40,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:40,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1301449848, now seen corresponding path program 4 times [2024-01-31 16:05:40,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:40,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511421817] [2024-01-31 16:05:40,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:40,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:40,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:40,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:40,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:40,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511421817] [2024-01-31 16:05:40,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511421817] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:40,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:40,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:40,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830575384] [2024-01-31 16:05:40,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:40,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:40,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:40,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:40,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:40,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-01-31 16:05:40,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 458 transitions, 9715 flow. Second operand has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:40,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:40,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-01-31 16:05:40,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:41,445 INFO L124 PetriNetUnfolderBase]: 2461/4713 cut-off events. [2024-01-31 16:05:41,446 INFO L125 PetriNetUnfolderBase]: For 146141/146735 co-relation queries the response was YES. [2024-01-31 16:05:41,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35573 conditions, 4713 events. 2461/4713 cut-off events. For 146141/146735 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 34271 event pairs, 547 based on Foata normal form. 75/4632 useless extension candidates. Maximal degree in co-relation 35469. Up to 3801 conditions per place. [2024-01-31 16:05:41,494 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 383 selfloop transitions, 43 changer transitions 0/473 dead transitions. [2024-01-31 16:05:41,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 473 transitions, 10659 flow [2024-01-31 16:05:41,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:41,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:41,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 229 transitions. [2024-01-31 16:05:41,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.424860853432282 [2024-01-31 16:05:41,495 INFO L175 Difference]: Start difference. First operand has 285 places, 458 transitions, 9715 flow. Second operand 7 states and 229 transitions. [2024-01-31 16:05:41,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 473 transitions, 10659 flow [2024-01-31 16:05:41,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 473 transitions, 10358 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-01-31 16:05:41,886 INFO L231 Difference]: Finished difference. Result has 278 places, 457 transitions, 9484 flow [2024-01-31 16:05:41,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=9398, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9484, PETRI_PLACES=278, PETRI_TRANSITIONS=457} [2024-01-31 16:05:41,887 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 197 predicate places. [2024-01-31 16:05:41,887 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 457 transitions, 9484 flow [2024-01-31 16:05:41,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:41,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:41,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:41,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-01-31 16:05:41,888 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:05:41,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:41,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1809430045, now seen corresponding path program 2 times [2024-01-31 16:05:41,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:41,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142712684] [2024-01-31 16:05:41,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:41,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:42,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:42,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:42,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142712684] [2024-01-31 16:05:42,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142712684] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:42,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:42,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:42,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034349133] [2024-01-31 16:05:42,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:42,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:42,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:42,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:42,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:42,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:05:42,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 457 transitions, 9484 flow. Second operand has 9 states, 9 states have (on average 22.77777777777778) internal successors, (205), 9 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:42,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:42,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:05:42,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:43,204 INFO L124 PetriNetUnfolderBase]: 2659/4849 cut-off events. [2024-01-31 16:05:43,204 INFO L125 PetriNetUnfolderBase]: For 131097/131506 co-relation queries the response was YES. [2024-01-31 16:05:43,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35633 conditions, 4849 events. 2659/4849 cut-off events. For 131097/131506 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 33482 event pairs, 413 based on Foata normal form. 29/4721 useless extension candidates. Maximal degree in co-relation 35536. Up to 2319 conditions per place. [2024-01-31 16:05:43,250 INFO L140 encePairwiseOnDemand]: 66/77 looper letters, 347 selfloop transitions, 136 changer transitions 0/509 dead transitions. [2024-01-31 16:05:43,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 509 transitions, 10984 flow [2024-01-31 16:05:43,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:43,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:43,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 261 transitions. [2024-01-31 16:05:43,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4237012987012987 [2024-01-31 16:05:43,251 INFO L175 Difference]: Start difference. First operand has 278 places, 457 transitions, 9484 flow. Second operand 8 states and 261 transitions. [2024-01-31 16:05:43,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 509 transitions, 10984 flow [2024-01-31 16:05:43,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 509 transitions, 10871 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-31 16:05:43,644 INFO L231 Difference]: Finished difference. Result has 281 places, 457 transitions, 9651 flow [2024-01-31 16:05:43,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=9371, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9651, PETRI_PLACES=281, PETRI_TRANSITIONS=457} [2024-01-31 16:05:43,644 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 200 predicate places. [2024-01-31 16:05:43,645 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 457 transitions, 9651 flow [2024-01-31 16:05:43,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.77777777777778) internal successors, (205), 9 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:43,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:43,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:43,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-01-31 16:05:43,645 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:05:43,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:43,645 INFO L85 PathProgramCache]: Analyzing trace with hash 215600613, now seen corresponding path program 2 times [2024-01-31 16:05:43,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:43,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094581954] [2024-01-31 16:05:43,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:43,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:43,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:43,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:43,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:43,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094581954] [2024-01-31 16:05:43,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094581954] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:43,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:43,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:43,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483067578] [2024-01-31 16:05:43,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:43,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:43,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:43,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:43,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:43,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-01-31 16:05:43,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 457 transitions, 9651 flow. Second operand has 8 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:43,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:43,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-01-31 16:05:43,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:44,911 INFO L124 PetriNetUnfolderBase]: 2569/4906 cut-off events. [2024-01-31 16:05:44,912 INFO L125 PetriNetUnfolderBase]: For 148458/149052 co-relation queries the response was YES. [2024-01-31 16:05:44,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36541 conditions, 4906 events. 2569/4906 cut-off events. For 148458/149052 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 35523 event pairs, 508 based on Foata normal form. 76/4815 useless extension candidates. Maximal degree in co-relation 36443. Up to 1759 conditions per place. [2024-01-31 16:05:44,958 INFO L140 encePairwiseOnDemand]: 62/77 looper letters, 360 selfloop transitions, 150 changer transitions 2/559 dead transitions. [2024-01-31 16:05:44,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 559 transitions, 11696 flow [2024-01-31 16:05:44,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:44,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:44,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 301 transitions. [2024-01-31 16:05:44,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48863636363636365 [2024-01-31 16:05:44,959 INFO L175 Difference]: Start difference. First operand has 281 places, 457 transitions, 9651 flow. Second operand 8 states and 301 transitions. [2024-01-31 16:05:44,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 559 transitions, 11696 flow [2024-01-31 16:05:45,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 559 transitions, 11391 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-01-31 16:05:45,440 INFO L231 Difference]: Finished difference. Result has 283 places, 484 transitions, 10005 flow [2024-01-31 16:05:45,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=9354, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10005, PETRI_PLACES=283, PETRI_TRANSITIONS=484} [2024-01-31 16:05:45,440 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 202 predicate places. [2024-01-31 16:05:45,440 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 484 transitions, 10005 flow [2024-01-31 16:05:45,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:45,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:45,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:45,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-01-31 16:05:45,441 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:05:45,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:45,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1274343609, now seen corresponding path program 3 times [2024-01-31 16:05:45,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:45,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546540314] [2024-01-31 16:05:45,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:45,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:45,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:45,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:45,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:45,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546540314] [2024-01-31 16:05:45,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546540314] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:45,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:45,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:45,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194653291] [2024-01-31 16:05:45,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:45,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:45,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:45,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:45,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:45,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-01-31 16:05:45,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 484 transitions, 10005 flow. Second operand has 8 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:45,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:45,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-01-31 16:05:45,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:46,790 INFO L124 PetriNetUnfolderBase]: 2600/4977 cut-off events. [2024-01-31 16:05:46,790 INFO L125 PetriNetUnfolderBase]: For 148788/149401 co-relation queries the response was YES. [2024-01-31 16:05:46,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38441 conditions, 4977 events. 2600/4977 cut-off events. For 148788/149401 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 36211 event pairs, 513 based on Foata normal form. 76/4886 useless extension candidates. Maximal degree in co-relation 38341. Up to 1772 conditions per place. [2024-01-31 16:05:46,841 INFO L140 encePairwiseOnDemand]: 60/77 looper letters, 349 selfloop transitions, 178 changer transitions 2/576 dead transitions. [2024-01-31 16:05:46,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 576 transitions, 12120 flow [2024-01-31 16:05:46,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:46,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:46,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 309 transitions. [2024-01-31 16:05:46,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5016233766233766 [2024-01-31 16:05:46,843 INFO L175 Difference]: Start difference. First operand has 283 places, 484 transitions, 10005 flow. Second operand 8 states and 309 transitions. [2024-01-31 16:05:46,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 576 transitions, 12120 flow [2024-01-31 16:05:47,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 576 transitions, 11947 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-01-31 16:05:47,282 INFO L231 Difference]: Finished difference. Result has 290 places, 502 transitions, 10518 flow [2024-01-31 16:05:47,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=9839, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10518, PETRI_PLACES=290, PETRI_TRANSITIONS=502} [2024-01-31 16:05:47,283 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 209 predicate places. [2024-01-31 16:05:47,283 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 502 transitions, 10518 flow [2024-01-31 16:05:47,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:47,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:47,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:47,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-01-31 16:05:47,284 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:05:47,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:47,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1274103669, now seen corresponding path program 4 times [2024-01-31 16:05:47,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:47,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466164215] [2024-01-31 16:05:47,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:47,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:47,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:47,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:47,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:47,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466164215] [2024-01-31 16:05:47,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466164215] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:47,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:47,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:47,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269767773] [2024-01-31 16:05:47,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:47,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:47,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:47,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:47,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:47,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-01-31 16:05:47,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 502 transitions, 10518 flow. Second operand has 8 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:47,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:47,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-01-31 16:05:47,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:48,710 INFO L124 PetriNetUnfolderBase]: 2636/5045 cut-off events. [2024-01-31 16:05:48,710 INFO L125 PetriNetUnfolderBase]: For 155628/156242 co-relation queries the response was YES. [2024-01-31 16:05:48,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40038 conditions, 5045 events. 2636/5045 cut-off events. For 155628/156242 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 36704 event pairs, 516 based on Foata normal form. 76/4954 useless extension candidates. Maximal degree in co-relation 39936. Up to 1784 conditions per place. [2024-01-31 16:05:48,756 INFO L140 encePairwiseOnDemand]: 60/77 looper letters, 350 selfloop transitions, 189 changer transitions 2/588 dead transitions. [2024-01-31 16:05:48,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 588 transitions, 12611 flow [2024-01-31 16:05:48,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:48,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:48,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 317 transitions. [2024-01-31 16:05:48,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5146103896103896 [2024-01-31 16:05:48,757 INFO L175 Difference]: Start difference. First operand has 290 places, 502 transitions, 10518 flow. Second operand 8 states and 317 transitions. [2024-01-31 16:05:48,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 588 transitions, 12611 flow [2024-01-31 16:05:49,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 588 transitions, 12330 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-01-31 16:05:49,169 INFO L231 Difference]: Finished difference. Result has 293 places, 508 transitions, 10766 flow [2024-01-31 16:05:49,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=10247, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10766, PETRI_PLACES=293, PETRI_TRANSITIONS=508} [2024-01-31 16:05:49,170 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 212 predicate places. [2024-01-31 16:05:49,170 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 508 transitions, 10766 flow [2024-01-31 16:05:49,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:49,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:49,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:49,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-01-31 16:05:49,170 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:05:49,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:49,171 INFO L85 PathProgramCache]: Analyzing trace with hash 218308421, now seen corresponding path program 5 times [2024-01-31 16:05:49,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:49,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541057571] [2024-01-31 16:05:49,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:49,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:49,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:49,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:49,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:49,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541057571] [2024-01-31 16:05:49,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541057571] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:49,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:49,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:49,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261911065] [2024-01-31 16:05:49,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:49,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:49,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:49,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:49,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:49,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-01-31 16:05:49,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 508 transitions, 10766 flow. Second operand has 8 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:49,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:49,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-01-31 16:05:49,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:50,541 INFO L124 PetriNetUnfolderBase]: 2705/5148 cut-off events. [2024-01-31 16:05:50,542 INFO L125 PetriNetUnfolderBase]: For 160282/160914 co-relation queries the response was YES. [2024-01-31 16:05:50,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41089 conditions, 5148 events. 2705/5148 cut-off events. For 160282/160914 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 37396 event pairs, 497 based on Foata normal form. 80/5057 useless extension candidates. Maximal degree in co-relation 40986. Up to 1811 conditions per place. [2024-01-31 16:05:50,596 INFO L140 encePairwiseOnDemand]: 63/77 looper letters, 360 selfloop transitions, 176 changer transitions 2/585 dead transitions. [2024-01-31 16:05:50,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 585 transitions, 12644 flow [2024-01-31 16:05:50,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:50,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:50,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 276 transitions. [2024-01-31 16:05:50,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5120593692022264 [2024-01-31 16:05:50,597 INFO L175 Difference]: Start difference. First operand has 293 places, 508 transitions, 10766 flow. Second operand 7 states and 276 transitions. [2024-01-31 16:05:50,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 585 transitions, 12644 flow [2024-01-31 16:05:51,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 585 transitions, 12355 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-01-31 16:05:51,120 INFO L231 Difference]: Finished difference. Result has 298 places, 520 transitions, 11119 flow [2024-01-31 16:05:51,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=10485, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11119, PETRI_PLACES=298, PETRI_TRANSITIONS=520} [2024-01-31 16:05:51,121 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 217 predicate places. [2024-01-31 16:05:51,121 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 520 transitions, 11119 flow [2024-01-31 16:05:51,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:51,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:51,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:51,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-01-31 16:05:51,121 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:05:51,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:51,122 INFO L85 PathProgramCache]: Analyzing trace with hash 2016546867, now seen corresponding path program 3 times [2024-01-31 16:05:51,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:51,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107965525] [2024-01-31 16:05:51,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:51,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:51,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:51,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:51,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:51,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107965525] [2024-01-31 16:05:51,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107965525] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:51,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:51,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:51,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403992691] [2024-01-31 16:05:51,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:51,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:51,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:51,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:51,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:51,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:05:51,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 520 transitions, 11119 flow. Second operand has 9 states, 9 states have (on average 22.77777777777778) internal successors, (205), 9 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:51,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:51,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:05:51,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:52,494 INFO L124 PetriNetUnfolderBase]: 2893/5293 cut-off events. [2024-01-31 16:05:52,494 INFO L125 PetriNetUnfolderBase]: For 164745/165288 co-relation queries the response was YES. [2024-01-31 16:05:52,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43655 conditions, 5293 events. 2893/5293 cut-off events. For 164745/165288 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 36907 event pairs, 393 based on Foata normal form. 91/5228 useless extension candidates. Maximal degree in co-relation 43549. Up to 2654 conditions per place. [2024-01-31 16:05:52,552 INFO L140 encePairwiseOnDemand]: 65/77 looper letters, 346 selfloop transitions, 166 changer transitions 0/549 dead transitions. [2024-01-31 16:05:52,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 549 transitions, 12432 flow [2024-01-31 16:05:52,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:52,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:52,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 233 transitions. [2024-01-31 16:05:52,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4322820037105751 [2024-01-31 16:05:52,553 INFO L175 Difference]: Start difference. First operand has 298 places, 520 transitions, 11119 flow. Second operand 7 states and 233 transitions. [2024-01-31 16:05:52,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 549 transitions, 12432 flow [2024-01-31 16:05:53,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 549 transitions, 12217 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-01-31 16:05:53,041 INFO L231 Difference]: Finished difference. Result has 301 places, 521 transitions, 11267 flow [2024-01-31 16:05:53,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=10904, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11267, PETRI_PLACES=301, PETRI_TRANSITIONS=521} [2024-01-31 16:05:53,041 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 220 predicate places. [2024-01-31 16:05:53,042 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 521 transitions, 11267 flow [2024-01-31 16:05:53,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.77777777777778) internal successors, (205), 9 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:53,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:53,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:53,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-01-31 16:05:53,042 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:05:53,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:53,042 INFO L85 PathProgramCache]: Analyzing trace with hash 860634097, now seen corresponding path program 4 times [2024-01-31 16:05:53,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:53,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780041160] [2024-01-31 16:05:53,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:53,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:53,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:53,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:53,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:53,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780041160] [2024-01-31 16:05:53,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780041160] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:53,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:53,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:53,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655535990] [2024-01-31 16:05:53,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:53,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:53,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:53,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:53,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:53,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:05:53,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 521 transitions, 11267 flow. Second operand has 9 states, 9 states have (on average 22.77777777777778) internal successors, (205), 9 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:53,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:53,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:05:53,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:54,481 INFO L124 PetriNetUnfolderBase]: 2903/5319 cut-off events. [2024-01-31 16:05:54,482 INFO L125 PetriNetUnfolderBase]: For 171285/171800 co-relation queries the response was YES. [2024-01-31 16:05:54,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43641 conditions, 5319 events. 2903/5319 cut-off events. For 171285/171800 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 37181 event pairs, 402 based on Foata normal form. 59/5214 useless extension candidates. Maximal degree in co-relation 43535. Up to 2666 conditions per place. [2024-01-31 16:05:54,633 INFO L140 encePairwiseOnDemand]: 66/77 looper letters, 354 selfloop transitions, 161 changer transitions 0/552 dead transitions. [2024-01-31 16:05:54,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 552 transitions, 12624 flow [2024-01-31 16:05:54,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:54,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:54,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 231 transitions. [2024-01-31 16:05:54,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-01-31 16:05:54,634 INFO L175 Difference]: Start difference. First operand has 301 places, 521 transitions, 11267 flow. Second operand 7 states and 231 transitions. [2024-01-31 16:05:54,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 552 transitions, 12624 flow [2024-01-31 16:05:55,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 552 transitions, 12260 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-01-31 16:05:55,078 INFO L231 Difference]: Finished difference. Result has 301 places, 522 transitions, 11247 flow [2024-01-31 16:05:55,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=10905, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11247, PETRI_PLACES=301, PETRI_TRANSITIONS=522} [2024-01-31 16:05:55,078 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 220 predicate places. [2024-01-31 16:05:55,079 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 522 transitions, 11247 flow [2024-01-31 16:05:55,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.77777777777778) internal successors, (205), 9 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:55,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:55,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:55,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-01-31 16:05:55,079 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:05:55,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:55,079 INFO L85 PathProgramCache]: Analyzing trace with hash 561133087, now seen corresponding path program 5 times [2024-01-31 16:05:55,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:55,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382812810] [2024-01-31 16:05:55,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:55,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:55,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:55,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:55,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:55,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382812810] [2024-01-31 16:05:55,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382812810] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:55,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:55,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:55,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984532466] [2024-01-31 16:05:55,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:55,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:55,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:55,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:55,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:55,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:05:55,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 522 transitions, 11247 flow. Second operand has 9 states, 9 states have (on average 22.77777777777778) internal successors, (205), 9 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:55,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:55,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:05:55,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:56,486 INFO L124 PetriNetUnfolderBase]: 2907/5339 cut-off events. [2024-01-31 16:05:56,486 INFO L125 PetriNetUnfolderBase]: For 169355/169862 co-relation queries the response was YES. [2024-01-31 16:05:56,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43643 conditions, 5339 events. 2907/5339 cut-off events. For 169355/169862 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 37485 event pairs, 363 based on Foata normal form. 43/5220 useless extension candidates. Maximal degree in co-relation 43538. Up to 2663 conditions per place. [2024-01-31 16:05:56,543 INFO L140 encePairwiseOnDemand]: 66/77 looper letters, 347 selfloop transitions, 167 changer transitions 0/551 dead transitions. [2024-01-31 16:05:56,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 551 transitions, 12546 flow [2024-01-31 16:05:56,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:56,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:56,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 226 transitions. [2024-01-31 16:05:56,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41929499072356213 [2024-01-31 16:05:56,544 INFO L175 Difference]: Start difference. First operand has 301 places, 522 transitions, 11247 flow. Second operand 7 states and 226 transitions. [2024-01-31 16:05:56,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 551 transitions, 12546 flow [2024-01-31 16:05:57,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 551 transitions, 12139 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-01-31 16:05:57,034 INFO L231 Difference]: Finished difference. Result has 294 places, 525 transitions, 11285 flow [2024-01-31 16:05:57,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=10790, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11285, PETRI_PLACES=294, PETRI_TRANSITIONS=525} [2024-01-31 16:05:57,034 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 213 predicate places. [2024-01-31 16:05:57,034 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 525 transitions, 11285 flow [2024-01-31 16:05:57,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.77777777777778) internal successors, (205), 9 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:57,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:57,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:57,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-01-31 16:05:57,035 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:05:57,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:57,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1473998489, now seen corresponding path program 1 times [2024-01-31 16:05:57,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:57,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416120705] [2024-01-31 16:05:57,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:57,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:57,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:57,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:57,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:57,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416120705] [2024-01-31 16:05:57,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416120705] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:57,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:57,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:05:57,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531716265] [2024-01-31 16:05:57,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:57,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:57,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:57,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:57,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:57,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-01-31 16:05:57,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 525 transitions, 11285 flow. Second operand has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:57,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:57,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-01-31 16:05:57,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:58,403 INFO L124 PetriNetUnfolderBase]: 2699/5255 cut-off events. [2024-01-31 16:05:58,403 INFO L125 PetriNetUnfolderBase]: For 175834/176616 co-relation queries the response was YES. [2024-01-31 16:05:58,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42722 conditions, 5255 events. 2699/5255 cut-off events. For 175834/176616 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 39300 event pairs, 537 based on Foata normal form. 91/5188 useless extension candidates. Maximal degree in co-relation 42624. Up to 2570 conditions per place. [2024-01-31 16:05:58,453 INFO L140 encePairwiseOnDemand]: 63/77 looper letters, 370 selfloop transitions, 149 changer transitions 4/572 dead transitions. [2024-01-31 16:05:58,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 572 transitions, 12785 flow [2024-01-31 16:05:58,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:58,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:58,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 284 transitions. [2024-01-31 16:05:58,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.461038961038961 [2024-01-31 16:05:58,454 INFO L175 Difference]: Start difference. First operand has 294 places, 525 transitions, 11285 flow. Second operand 8 states and 284 transitions. [2024-01-31 16:05:58,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 572 transitions, 12785 flow [2024-01-31 16:05:58,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 572 transitions, 12508 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-01-31 16:05:58,836 INFO L231 Difference]: Finished difference. Result has 299 places, 526 transitions, 11425 flow [2024-01-31 16:05:58,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=11008, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11425, PETRI_PLACES=299, PETRI_TRANSITIONS=526} [2024-01-31 16:05:58,836 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 218 predicate places. [2024-01-31 16:05:58,837 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 526 transitions, 11425 flow [2024-01-31 16:05:58,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:58,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:58,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:58,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-01-31 16:05:58,837 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:05:58,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:58,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1751570075, now seen corresponding path program 2 times [2024-01-31 16:05:58,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:58,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008856] [2024-01-31 16:05:58,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:58,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:58,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:59,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:59,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:59,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008856] [2024-01-31 16:05:59,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008856] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:59,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:59,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:05:59,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298566537] [2024-01-31 16:05:59,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:59,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:59,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:59,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:59,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:59,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-01-31 16:05:59,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 526 transitions, 11425 flow. Second operand has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:59,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:59,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-01-31 16:05:59,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:00,272 INFO L124 PetriNetUnfolderBase]: 2749/5374 cut-off events. [2024-01-31 16:06:00,272 INFO L125 PetriNetUnfolderBase]: For 178592/179503 co-relation queries the response was YES. [2024-01-31 16:06:00,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43793 conditions, 5374 events. 2749/5374 cut-off events. For 178592/179503 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 40289 event pairs, 683 based on Foata normal form. 86/5292 useless extension candidates. Maximal degree in co-relation 43693. Up to 2271 conditions per place. [2024-01-31 16:06:00,326 INFO L140 encePairwiseOnDemand]: 62/77 looper letters, 379 selfloop transitions, 150 changer transitions 4/582 dead transitions. [2024-01-31 16:06:00,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 582 transitions, 13100 flow [2024-01-31 16:06:00,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:06:00,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:06:00,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 286 transitions. [2024-01-31 16:06:00,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-01-31 16:06:00,327 INFO L175 Difference]: Start difference. First operand has 299 places, 526 transitions, 11425 flow. Second operand 8 states and 286 transitions. [2024-01-31 16:06:00,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 582 transitions, 13100 flow [2024-01-31 16:06:00,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 582 transitions, 12886 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-01-31 16:06:00,903 INFO L231 Difference]: Finished difference. Result has 303 places, 531 transitions, 11686 flow [2024-01-31 16:06:00,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=11232, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11686, PETRI_PLACES=303, PETRI_TRANSITIONS=531} [2024-01-31 16:06:00,904 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 222 predicate places. [2024-01-31 16:06:00,904 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 531 transitions, 11686 flow [2024-01-31 16:06:00,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:00,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:00,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:00,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-01-31 16:06:00,905 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:06:00,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:00,905 INFO L85 PathProgramCache]: Analyzing trace with hash 711091377, now seen corresponding path program 3 times [2024-01-31 16:06:00,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:00,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147827148] [2024-01-31 16:06:00,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:00,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:00,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:01,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:01,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:01,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147827148] [2024-01-31 16:06:01,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147827148] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:01,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:01,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:06:01,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779961025] [2024-01-31 16:06:01,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:01,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:06:01,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:01,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:06:01,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:06:01,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-01-31 16:06:01,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 531 transitions, 11686 flow. Second operand has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:01,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:01,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-01-31 16:06:01,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:02,402 INFO L124 PetriNetUnfolderBase]: 2741/5407 cut-off events. [2024-01-31 16:06:02,403 INFO L125 PetriNetUnfolderBase]: For 181602/182539 co-relation queries the response was YES. [2024-01-31 16:06:02,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45475 conditions, 5407 events. 2741/5407 cut-off events. For 181602/182539 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 40961 event pairs, 689 based on Foata normal form. 82/5318 useless extension candidates. Maximal degree in co-relation 45373. Up to 2279 conditions per place. [2024-01-31 16:06:02,458 INFO L140 encePairwiseOnDemand]: 58/77 looper letters, 335 selfloop transitions, 206 changer transitions 0/590 dead transitions. [2024-01-31 16:06:02,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 590 transitions, 13457 flow [2024-01-31 16:06:02,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:06:02,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:06:02,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 297 transitions. [2024-01-31 16:06:02,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-01-31 16:06:02,459 INFO L175 Difference]: Start difference. First operand has 303 places, 531 transitions, 11686 flow. Second operand 8 states and 297 transitions. [2024-01-31 16:06:02,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 590 transitions, 13457 flow [2024-01-31 16:06:02,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 590 transitions, 13428 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-01-31 16:06:02,972 INFO L231 Difference]: Finished difference. Result has 310 places, 541 transitions, 12300 flow [2024-01-31 16:06:02,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=11660, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12300, PETRI_PLACES=310, PETRI_TRANSITIONS=541} [2024-01-31 16:06:02,973 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 229 predicate places. [2024-01-31 16:06:02,973 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 541 transitions, 12300 flow [2024-01-31 16:06:02,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:02,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:02,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:02,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-01-31 16:06:02,973 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:06:02,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:02,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1304580845, now seen corresponding path program 4 times [2024-01-31 16:06:02,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:02,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950344683] [2024-01-31 16:06:02,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:02,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:02,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:03,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:03,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:03,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950344683] [2024-01-31 16:06:03,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950344683] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:03,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:03,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:06:03,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409222934] [2024-01-31 16:06:03,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:03,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:06:03,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:03,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:06:03,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:06:03,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-01-31 16:06:03,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 541 transitions, 12300 flow. Second operand has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:03,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:03,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-01-31 16:06:03,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:04,717 INFO L124 PetriNetUnfolderBase]: 2750/5450 cut-off events. [2024-01-31 16:06:04,717 INFO L125 PetriNetUnfolderBase]: For 190938/191875 co-relation queries the response was YES. [2024-01-31 16:06:04,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47370 conditions, 5450 events. 2750/5450 cut-off events. For 190938/191875 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 41472 event pairs, 693 based on Foata normal form. 82/5361 useless extension candidates. Maximal degree in co-relation 47265. Up to 2285 conditions per place. [2024-01-31 16:06:04,781 INFO L140 encePairwiseOnDemand]: 58/77 looper letters, 331 selfloop transitions, 220 changer transitions 2/602 dead transitions. [2024-01-31 16:06:04,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 602 transitions, 14192 flow [2024-01-31 16:06:04,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:06:04,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:06:04,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 308 transitions. [2024-01-31 16:06:04,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-01-31 16:06:04,783 INFO L175 Difference]: Start difference. First operand has 310 places, 541 transitions, 12300 flow. Second operand 8 states and 308 transitions. [2024-01-31 16:06:04,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 602 transitions, 14192 flow [2024-01-31 16:06:05,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 602 transitions, 13903 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-01-31 16:06:05,310 INFO L231 Difference]: Finished difference. Result has 313 places, 544 transitions, 12604 flow [2024-01-31 16:06:05,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=12016, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12604, PETRI_PLACES=313, PETRI_TRANSITIONS=544} [2024-01-31 16:06:05,310 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 232 predicate places. [2024-01-31 16:06:05,310 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 544 transitions, 12604 flow [2024-01-31 16:06:05,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:05,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:05,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:05,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-01-31 16:06:05,311 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:06:05,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:05,311 INFO L85 PathProgramCache]: Analyzing trace with hash -344943811, now seen corresponding path program 5 times [2024-01-31 16:06:05,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:05,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642304722] [2024-01-31 16:06:05,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:05,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:05,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:05,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:05,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:05,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642304722] [2024-01-31 16:06:05,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642304722] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:05,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:05,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:06:05,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407920941] [2024-01-31 16:06:05,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:05,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:06:05,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:05,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:06:05,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:06:05,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-01-31 16:06:05,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 544 transitions, 12604 flow. Second operand has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:05,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:05,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-01-31 16:06:05,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:06,818 INFO L124 PetriNetUnfolderBase]: 2816/5552 cut-off events. [2024-01-31 16:06:06,818 INFO L125 PetriNetUnfolderBase]: For 195656/196606 co-relation queries the response was YES. [2024-01-31 16:06:06,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48624 conditions, 5552 events. 2816/5552 cut-off events. For 195656/196606 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 42190 event pairs, 674 based on Foata normal form. 88/5463 useless extension candidates. Maximal degree in co-relation 48519. Up to 2371 conditions per place. [2024-01-31 16:06:06,876 INFO L140 encePairwiseOnDemand]: 63/77 looper letters, 366 selfloop transitions, 171 changer transitions 4/590 dead transitions. [2024-01-31 16:06:06,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 590 transitions, 14165 flow [2024-01-31 16:06:06,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:06:06,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:06:06,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 261 transitions. [2024-01-31 16:06:06,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4842300556586271 [2024-01-31 16:06:06,877 INFO L175 Difference]: Start difference. First operand has 313 places, 544 transitions, 12604 flow. Second operand 7 states and 261 transitions. [2024-01-31 16:06:06,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 590 transitions, 14165 flow [2024-01-31 16:06:07,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 590 transitions, 13796 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-01-31 16:06:07,471 INFO L231 Difference]: Finished difference. Result has 310 places, 548 transitions, 12676 flow [2024-01-31 16:06:07,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=12222, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12676, PETRI_PLACES=310, PETRI_TRANSITIONS=548} [2024-01-31 16:06:07,472 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 229 predicate places. [2024-01-31 16:06:07,472 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 548 transitions, 12676 flow [2024-01-31 16:06:07,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:07,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:07,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:07,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-01-31 16:06:07,472 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:06:07,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:07,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1789252519, now seen corresponding path program 1 times [2024-01-31 16:06:07,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:07,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940153233] [2024-01-31 16:06:07,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:07,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:07,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:07,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:07,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:07,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940153233] [2024-01-31 16:06:07,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940153233] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:07,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:07,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:06:07,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167469410] [2024-01-31 16:06:07,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:07,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:06:07,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:07,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:06:07,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:06:07,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-01-31 16:06:07,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 548 transitions, 12676 flow. Second operand has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:07,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:07,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-01-31 16:06:07,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:08,660 INFO L124 PetriNetUnfolderBase]: 2143/4608 cut-off events. [2024-01-31 16:06:08,661 INFO L125 PetriNetUnfolderBase]: For 183804/184876 co-relation queries the response was YES. [2024-01-31 16:06:08,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42143 conditions, 4608 events. 2143/4608 cut-off events. For 183804/184876 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 37253 event pairs, 249 based on Foata normal form. 65/4488 useless extension candidates. Maximal degree in co-relation 42042. Up to 1675 conditions per place. [2024-01-31 16:06:08,710 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 352 selfloop transitions, 170 changer transitions 2/604 dead transitions. [2024-01-31 16:06:08,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 604 transitions, 14463 flow [2024-01-31 16:06:08,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:06:08,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:06:08,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 277 transitions. [2024-01-31 16:06:08,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5995670995670995 [2024-01-31 16:06:08,711 INFO L175 Difference]: Start difference. First operand has 310 places, 548 transitions, 12676 flow. Second operand 6 states and 277 transitions. [2024-01-31 16:06:08,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 604 transitions, 14463 flow [2024-01-31 16:06:09,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 604 transitions, 14197 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-01-31 16:06:09,161 INFO L231 Difference]: Finished difference. Result has 313 places, 566 transitions, 13156 flow [2024-01-31 16:06:09,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=12410, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=13156, PETRI_PLACES=313, PETRI_TRANSITIONS=566} [2024-01-31 16:06:09,161 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 232 predicate places. [2024-01-31 16:06:09,162 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 566 transitions, 13156 flow [2024-01-31 16:06:09,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:09,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:09,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:09,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-01-31 16:06:09,162 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:06:09,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:09,162 INFO L85 PathProgramCache]: Analyzing trace with hash 438731721, now seen corresponding path program 1 times [2024-01-31 16:06:09,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:09,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217392003] [2024-01-31 16:06:09,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:09,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:09,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:09,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:09,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:09,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217392003] [2024-01-31 16:06:09,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217392003] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:09,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:09,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:06:09,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802982223] [2024-01-31 16:06:09,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:09,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:06:09,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:09,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:06:09,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:06:09,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-01-31 16:06:09,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 566 transitions, 13156 flow. Second operand has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:09,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:09,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-01-31 16:06:09,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:10,409 INFO L124 PetriNetUnfolderBase]: 2178/4678 cut-off events. [2024-01-31 16:06:10,410 INFO L125 PetriNetUnfolderBase]: For 188721/189793 co-relation queries the response was YES. [2024-01-31 16:06:10,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43373 conditions, 4678 events. 2178/4678 cut-off events. For 188721/189793 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 37756 event pairs, 239 based on Foata normal form. 53/4547 useless extension candidates. Maximal degree in co-relation 43270. Up to 1687 conditions per place. [2024-01-31 16:06:10,460 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 357 selfloop transitions, 163 changer transitions 2/602 dead transitions. [2024-01-31 16:06:10,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 602 transitions, 14662 flow [2024-01-31 16:06:10,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:06:10,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:06:10,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 273 transitions. [2024-01-31 16:06:10,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2024-01-31 16:06:10,461 INFO L175 Difference]: Start difference. First operand has 313 places, 566 transitions, 13156 flow. Second operand 6 states and 273 transitions. [2024-01-31 16:06:10,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 602 transitions, 14662 flow [2024-01-31 16:06:10,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 602 transitions, 14344 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-01-31 16:06:10,964 INFO L231 Difference]: Finished difference. Result has 316 places, 569 transitions, 13318 flow [2024-01-31 16:06:10,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=12848, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=13318, PETRI_PLACES=316, PETRI_TRANSITIONS=569} [2024-01-31 16:06:10,965 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 235 predicate places. [2024-01-31 16:06:10,965 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 569 transitions, 13318 flow [2024-01-31 16:06:10,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:10,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:10,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:10,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-01-31 16:06:10,966 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:06:10,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:10,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1787528751, now seen corresponding path program 2 times [2024-01-31 16:06:10,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:10,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388188739] [2024-01-31 16:06:10,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:10,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:10,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:11,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:11,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:11,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388188739] [2024-01-31 16:06:11,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388188739] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:11,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:11,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:06:11,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923863273] [2024-01-31 16:06:11,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:11,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:06:11,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:11,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:06:11,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:06:11,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-01-31 16:06:11,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 569 transitions, 13318 flow. Second operand has 8 states, 8 states have (on average 34.75) internal successors, (278), 8 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:11,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:11,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-01-31 16:06:11,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:12,221 INFO L124 PetriNetUnfolderBase]: 2176/4662 cut-off events. [2024-01-31 16:06:12,221 INFO L125 PetriNetUnfolderBase]: For 189727/190785 co-relation queries the response was YES. [2024-01-31 16:06:12,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43738 conditions, 4662 events. 2176/4662 cut-off events. For 189727/190785 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 37547 event pairs, 398 based on Foata normal form. 50/4533 useless extension candidates. Maximal degree in co-relation 43633. Up to 3452 conditions per place. [2024-01-31 16:06:12,270 INFO L140 encePairwiseOnDemand]: 71/77 looper letters, 454 selfloop transitions, 58 changer transitions 0/592 dead transitions. [2024-01-31 16:06:12,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 592 transitions, 14558 flow [2024-01-31 16:06:12,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:06:12,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:06:12,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 293 transitions. [2024-01-31 16:06:12,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5435992578849722 [2024-01-31 16:06:12,271 INFO L175 Difference]: Start difference. First operand has 316 places, 569 transitions, 13318 flow. Second operand 7 states and 293 transitions. [2024-01-31 16:06:12,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 592 transitions, 14558 flow [2024-01-31 16:06:12,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 592 transitions, 14427 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-01-31 16:06:12,762 INFO L231 Difference]: Finished difference. Result has 321 places, 570 transitions, 13323 flow [2024-01-31 16:06:12,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=13188, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13323, PETRI_PLACES=321, PETRI_TRANSITIONS=570} [2024-01-31 16:06:12,762 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 240 predicate places. [2024-01-31 16:06:12,763 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 570 transitions, 13323 flow [2024-01-31 16:06:12,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 34.75) internal successors, (278), 8 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:12,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:12,763 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] [2024-01-31 16:06:12,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-01-31 16:06:12,763 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:06:12,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:12,764 INFO L85 PathProgramCache]: Analyzing trace with hash -543932333, now seen corresponding path program 2 times [2024-01-31 16:06:12,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:12,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871683624] [2024-01-31 16:06:12,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:12,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:12,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:12,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:12,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:12,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871683624] [2024-01-31 16:06:12,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871683624] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:12,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:12,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:06:12,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672594954] [2024-01-31 16:06:12,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:12,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:06:12,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:12,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:06:12,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:06:12,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-01-31 16:06:12,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 570 transitions, 13323 flow. Second operand has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:12,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:12,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-01-31 16:06:12,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:14,047 INFO L124 PetriNetUnfolderBase]: 2159/4640 cut-off events. [2024-01-31 16:06:14,047 INFO L125 PetriNetUnfolderBase]: For 190356/191420 co-relation queries the response was YES. [2024-01-31 16:06:14,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43202 conditions, 4640 events. 2159/4640 cut-off events. For 190356/191420 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 37503 event pairs, 249 based on Foata normal form. 55/4513 useless extension candidates. Maximal degree in co-relation 43096. Up to 1691 conditions per place. [2024-01-31 16:06:14,098 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 366 selfloop transitions, 156 changer transitions 2/604 dead transitions. [2024-01-31 16:06:14,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 604 transitions, 14801 flow [2024-01-31 16:06:14,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:06:14,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:06:14,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 276 transitions. [2024-01-31 16:06:14,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5974025974025974 [2024-01-31 16:06:14,100 INFO L175 Difference]: Start difference. First operand has 321 places, 570 transitions, 13323 flow. Second operand 6 states and 276 transitions. [2024-01-31 16:06:14,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 604 transitions, 14801 flow [2024-01-31 16:06:14,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 604 transitions, 14519 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-01-31 16:06:14,610 INFO L231 Difference]: Finished difference. Result has 321 places, 570 transitions, 13392 flow [2024-01-31 16:06:14,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=13041, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=13392, PETRI_PLACES=321, PETRI_TRANSITIONS=570} [2024-01-31 16:06:14,611 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 240 predicate places. [2024-01-31 16:06:14,611 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 570 transitions, 13392 flow [2024-01-31 16:06:14,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:14,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:14,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:14,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-01-31 16:06:14,612 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:06:14,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:14,612 INFO L85 PathProgramCache]: Analyzing trace with hash 537278939, now seen corresponding path program 3 times [2024-01-31 16:06:14,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:14,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656473035] [2024-01-31 16:06:14,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:14,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:14,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:14,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:14,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:14,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656473035] [2024-01-31 16:06:14,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656473035] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:14,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:14,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:06:14,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111667859] [2024-01-31 16:06:14,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:14,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:06:14,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:14,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:06:14,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:06:14,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 77 [2024-01-31 16:06:14,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 570 transitions, 13392 flow. Second operand has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:14,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:14,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 77 [2024-01-31 16:06:14,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:15,865 INFO L124 PetriNetUnfolderBase]: 2144/4603 cut-off events. [2024-01-31 16:06:15,865 INFO L125 PetriNetUnfolderBase]: For 196045/197095 co-relation queries the response was YES. [2024-01-31 16:06:15,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42987 conditions, 4603 events. 2144/4603 cut-off events. For 196045/197095 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 37054 event pairs, 217 based on Foata normal form. 61/4480 useless extension candidates. Maximal degree in co-relation 42880. Up to 1691 conditions per place. [2024-01-31 16:06:15,916 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 358 selfloop transitions, 161 changer transitions 2/601 dead transitions. [2024-01-31 16:06:15,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 601 transitions, 14782 flow [2024-01-31 16:06:15,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:06:15,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:06:15,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 273 transitions. [2024-01-31 16:06:15,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2024-01-31 16:06:15,917 INFO L175 Difference]: Start difference. First operand has 321 places, 570 transitions, 13392 flow. Second operand 6 states and 273 transitions. [2024-01-31 16:06:15,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 601 transitions, 14782 flow [2024-01-31 16:06:16,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 601 transitions, 14205 flow, removed 12 selfloop flow, removed 15 redundant places. [2024-01-31 16:06:16,378 INFO L231 Difference]: Finished difference. Result has 310 places, 569 transitions, 13103 flow [2024-01-31 16:06:16,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=12781, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=13103, PETRI_PLACES=310, PETRI_TRANSITIONS=569} [2024-01-31 16:06:16,379 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 229 predicate places. [2024-01-31 16:06:16,379 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 569 transitions, 13103 flow [2024-01-31 16:06:16,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:16,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:16,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:16,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-01-31 16:06:16,380 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:06:16,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:16,380 INFO L85 PathProgramCache]: Analyzing trace with hash -814787918, now seen corresponding path program 1 times [2024-01-31 16:06:16,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:16,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286098044] [2024-01-31 16:06:16,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:16,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:16,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:16,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:16,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:16,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286098044] [2024-01-31 16:06:16,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286098044] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:16,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:16,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:16,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827072548] [2024-01-31 16:06:16,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:16,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:06:16,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:16,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:06:16,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:06:16,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:06:16,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 569 transitions, 13103 flow. Second operand has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:16,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:16,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:06:16,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:18,089 INFO L124 PetriNetUnfolderBase]: 3291/6266 cut-off events. [2024-01-31 16:06:18,089 INFO L125 PetriNetUnfolderBase]: For 214205/215083 co-relation queries the response was YES. [2024-01-31 16:06:18,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54773 conditions, 6266 events. 3291/6266 cut-off events. For 214205/215083 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 46604 event pairs, 467 based on Foata normal form. 29/6110 useless extension candidates. Maximal degree in co-relation 54678. Up to 2504 conditions per place. [2024-01-31 16:06:18,161 INFO L140 encePairwiseOnDemand]: 66/77 looper letters, 475 selfloop transitions, 184 changer transitions 2/700 dead transitions. [2024-01-31 16:06:18,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 700 transitions, 16220 flow [2024-01-31 16:06:18,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:06:18,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:06:18,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 295 transitions. [2024-01-31 16:06:18,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4788961038961039 [2024-01-31 16:06:18,162 INFO L175 Difference]: Start difference. First operand has 310 places, 569 transitions, 13103 flow. Second operand 8 states and 295 transitions. [2024-01-31 16:06:18,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 700 transitions, 16220 flow [2024-01-31 16:06:18,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 700 transitions, 16019 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-01-31 16:06:18,745 INFO L231 Difference]: Finished difference. Result has 317 places, 595 transitions, 13863 flow [2024-01-31 16:06:18,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=12939, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13863, PETRI_PLACES=317, PETRI_TRANSITIONS=595} [2024-01-31 16:06:18,746 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 236 predicate places. [2024-01-31 16:06:18,746 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 595 transitions, 13863 flow [2024-01-31 16:06:18,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:18,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:18,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:18,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-01-31 16:06:18,747 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:06:18,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:18,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1611897756, now seen corresponding path program 2 times [2024-01-31 16:06:18,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:18,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600250322] [2024-01-31 16:06:18,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:18,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:18,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:18,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:18,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:18,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600250322] [2024-01-31 16:06:18,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600250322] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:18,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:18,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:18,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086004021] [2024-01-31 16:06:18,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:18,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:06:18,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:18,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:06:18,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:06:18,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:06:18,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 595 transitions, 13863 flow. Second operand has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:18,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:18,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:06:18,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:20,523 INFO L124 PetriNetUnfolderBase]: 3347/6362 cut-off events. [2024-01-31 16:06:20,523 INFO L125 PetriNetUnfolderBase]: For 228278/229191 co-relation queries the response was YES. [2024-01-31 16:06:20,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56172 conditions, 6362 events. 3347/6362 cut-off events. For 228278/229191 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 47447 event pairs, 463 based on Foata normal form. 29/6206 useless extension candidates. Maximal degree in co-relation 56075. Up to 2524 conditions per place. [2024-01-31 16:06:20,589 INFO L140 encePairwiseOnDemand]: 66/77 looper letters, 485 selfloop transitions, 178 changer transitions 2/704 dead transitions. [2024-01-31 16:06:20,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 704 transitions, 16601 flow [2024-01-31 16:06:20,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:06:20,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:06:20,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 292 transitions. [2024-01-31 16:06:20,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.474025974025974 [2024-01-31 16:06:20,591 INFO L175 Difference]: Start difference. First operand has 317 places, 595 transitions, 13863 flow. Second operand 8 states and 292 transitions. [2024-01-31 16:06:20,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 704 transitions, 16601 flow [2024-01-31 16:06:21,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 704 transitions, 16463 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-01-31 16:06:21,193 INFO L231 Difference]: Finished difference. Result has 324 places, 599 transitions, 14172 flow [2024-01-31 16:06:21,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=13728, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14172, PETRI_PLACES=324, PETRI_TRANSITIONS=599} [2024-01-31 16:06:21,194 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 243 predicate places. [2024-01-31 16:06:21,194 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 599 transitions, 14172 flow [2024-01-31 16:06:21,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:21,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:21,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:21,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-01-31 16:06:21,194 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:06:21,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:21,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1719630780, now seen corresponding path program 1 times [2024-01-31 16:06:21,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:21,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423239506] [2024-01-31 16:06:21,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:21,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:21,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:21,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:21,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423239506] [2024-01-31 16:06:21,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423239506] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:21,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:21,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:21,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281955997] [2024-01-31 16:06:21,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:21,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:06:21,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:21,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:06:21,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:06:21,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-01-31 16:06:21,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 599 transitions, 14172 flow. Second operand has 8 states, 8 states have (on average 25.125) internal successors, (201), 8 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:21,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:21,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-01-31 16:06:21,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:23,085 INFO L124 PetriNetUnfolderBase]: 3110/6132 cut-off events. [2024-01-31 16:06:23,086 INFO L125 PetriNetUnfolderBase]: For 236500/237471 co-relation queries the response was YES. [2024-01-31 16:06:23,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53823 conditions, 6132 events. 3110/6132 cut-off events. For 236500/237471 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 47510 event pairs, 353 based on Foata normal form. 94/6072 useless extension candidates. Maximal degree in co-relation 53724. Up to 2271 conditions per place. [2024-01-31 16:06:23,143 INFO L140 encePairwiseOnDemand]: 67/77 looper letters, 387 selfloop transitions, 207 changer transitions 2/645 dead transitions. [2024-01-31 16:06:23,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 645 transitions, 15919 flow [2024-01-31 16:06:23,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:06:23,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:06:23,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 259 transitions. [2024-01-31 16:06:23,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4805194805194805 [2024-01-31 16:06:23,144 INFO L175 Difference]: Start difference. First operand has 324 places, 599 transitions, 14172 flow. Second operand 7 states and 259 transitions. [2024-01-31 16:06:23,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 645 transitions, 15919 flow [2024-01-31 16:06:23,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 645 transitions, 15632 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-01-31 16:06:23,661 INFO L231 Difference]: Finished difference. Result has 327 places, 599 transitions, 14361 flow [2024-01-31 16:06:23,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=13885, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14361, PETRI_PLACES=327, PETRI_TRANSITIONS=599} [2024-01-31 16:06:23,661 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 246 predicate places. [2024-01-31 16:06:23,661 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 599 transitions, 14361 flow [2024-01-31 16:06:23,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.125) internal successors, (201), 8 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:23,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:23,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:23,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-01-31 16:06:23,662 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:06:23,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:23,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1492070858, now seen corresponding path program 3 times [2024-01-31 16:06:23,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:23,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225736768] [2024-01-31 16:06:23,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:23,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:23,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:23,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:23,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:23,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225736768] [2024-01-31 16:06:23,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225736768] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:23,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:23,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:23,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906833639] [2024-01-31 16:06:23,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:23,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:06:23,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:23,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:06:23,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:06:23,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:06:23,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 599 transitions, 14361 flow. Second operand has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:23,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:23,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:06:23,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:25,465 INFO L124 PetriNetUnfolderBase]: 3299/6283 cut-off events. [2024-01-31 16:06:25,465 INFO L125 PetriNetUnfolderBase]: For 247990/248901 co-relation queries the response was YES. [2024-01-31 16:06:25,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56779 conditions, 6283 events. 3299/6283 cut-off events. For 247990/248901 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 46824 event pairs, 472 based on Foata normal form. 29/6128 useless extension candidates. Maximal degree in co-relation 56679. Up to 2508 conditions per place. [2024-01-31 16:06:25,530 INFO L140 encePairwiseOnDemand]: 66/77 looper letters, 469 selfloop transitions, 187 changer transitions 2/697 dead transitions. [2024-01-31 16:06:25,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 697 transitions, 16975 flow [2024-01-31 16:06:25,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:06:25,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:06:25,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 293 transitions. [2024-01-31 16:06:25,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47564935064935066 [2024-01-31 16:06:25,531 INFO L175 Difference]: Start difference. First operand has 327 places, 599 transitions, 14361 flow. Second operand 8 states and 293 transitions. [2024-01-31 16:06:25,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 697 transitions, 16975 flow [2024-01-31 16:06:26,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 697 transitions, 16561 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-31 16:06:26,187 INFO L231 Difference]: Finished difference. Result has 330 places, 600 transitions, 14390 flow [2024-01-31 16:06:26,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=13947, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14390, PETRI_PLACES=330, PETRI_TRANSITIONS=600} [2024-01-31 16:06:26,188 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 249 predicate places. [2024-01-31 16:06:26,188 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 600 transitions, 14390 flow [2024-01-31 16:06:26,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:26,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:26,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:26,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-01-31 16:06:26,188 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:06:26,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:26,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1678199736, now seen corresponding path program 2 times [2024-01-31 16:06:26,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:26,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244112837] [2024-01-31 16:06:26,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:26,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:26,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:26,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:26,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244112837] [2024-01-31 16:06:26,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244112837] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:26,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:26,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:26,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873740617] [2024-01-31 16:06:26,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:26,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:06:26,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:26,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:06:26,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:06:26,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-01-31 16:06:26,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 600 transitions, 14390 flow. Second operand has 8 states, 8 states have (on average 25.125) internal successors, (201), 8 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:26,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:26,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-01-31 16:06:26,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:27,798 INFO L124 PetriNetUnfolderBase]: 3069/6066 cut-off events. [2024-01-31 16:06:27,798 INFO L125 PetriNetUnfolderBase]: For 245163/246134 co-relation queries the response was YES. [2024-01-31 16:06:27,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54109 conditions, 6066 events. 3069/6066 cut-off events. For 245163/246134 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 46955 event pairs, 343 based on Foata normal form. 86/5999 useless extension candidates. Maximal degree in co-relation 54007. Up to 2259 conditions per place. [2024-01-31 16:06:27,865 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 392 selfloop transitions, 196 changer transitions 2/639 dead transitions. [2024-01-31 16:06:27,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 639 transitions, 16015 flow [2024-01-31 16:06:27,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:06:27,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:06:27,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 254 transitions. [2024-01-31 16:06:27,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4712430426716141 [2024-01-31 16:06:27,866 INFO L175 Difference]: Start difference. First operand has 330 places, 600 transitions, 14390 flow. Second operand 7 states and 254 transitions. [2024-01-31 16:06:27,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 639 transitions, 16015 flow [2024-01-31 16:06:28,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 639 transitions, 15590 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-01-31 16:06:28,474 INFO L231 Difference]: Finished difference. Result has 328 places, 600 transitions, 14383 flow [2024-01-31 16:06:28,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=13973, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=600, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14383, PETRI_PLACES=328, PETRI_TRANSITIONS=600} [2024-01-31 16:06:28,475 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 247 predicate places. [2024-01-31 16:06:28,476 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 600 transitions, 14383 flow [2024-01-31 16:06:28,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 25.125) internal successors, (201), 8 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:28,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:28,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:28,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-01-31 16:06:28,476 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:06:28,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:28,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1705272806, now seen corresponding path program 3 times [2024-01-31 16:06:28,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:28,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492036678] [2024-01-31 16:06:28,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:28,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:28,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:28,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:28,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:28,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492036678] [2024-01-31 16:06:28,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492036678] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:28,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:28,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:28,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443735499] [2024-01-31 16:06:28,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:28,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:06:28,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:28,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:06:28,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:06:28,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-01-31 16:06:28,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 600 transitions, 14383 flow. Second operand has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:28,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:28,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-01-31 16:06:28,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:30,170 INFO L124 PetriNetUnfolderBase]: 3127/6155 cut-off events. [2024-01-31 16:06:30,170 INFO L125 PetriNetUnfolderBase]: For 244838/245815 co-relation queries the response was YES. [2024-01-31 16:06:30,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54504 conditions, 6155 events. 3127/6155 cut-off events. For 244838/245815 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 47644 event pairs, 642 based on Foata normal form. 76/6075 useless extension candidates. Maximal degree in co-relation 54403. Up to 5069 conditions per place. [2024-01-31 16:06:30,235 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 524 selfloop transitions, 62 changer transitions 0/635 dead transitions. [2024-01-31 16:06:30,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 635 transitions, 15953 flow [2024-01-31 16:06:30,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:06:30,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:06:30,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 289 transitions. [2024-01-31 16:06:30,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.417027417027417 [2024-01-31 16:06:30,236 INFO L175 Difference]: Start difference. First operand has 328 places, 600 transitions, 14383 flow. Second operand 9 states and 289 transitions. [2024-01-31 16:06:30,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 635 transitions, 15953 flow [2024-01-31 16:06:30,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 635 transitions, 15561 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-31 16:06:30,874 INFO L231 Difference]: Finished difference. Result has 333 places, 606 transitions, 14257 flow [2024-01-31 16:06:30,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=14001, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=600, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=538, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14257, PETRI_PLACES=333, PETRI_TRANSITIONS=606} [2024-01-31 16:06:30,875 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 252 predicate places. [2024-01-31 16:06:30,875 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 606 transitions, 14257 flow [2024-01-31 16:06:30,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:30,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:30,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:30,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-01-31 16:06:30,875 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:06:30,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:30,876 INFO L85 PathProgramCache]: Analyzing trace with hash 887384730, now seen corresponding path program 4 times [2024-01-31 16:06:30,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:30,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012769228] [2024-01-31 16:06:30,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:30,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:30,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:31,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:31,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:31,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012769228] [2024-01-31 16:06:31,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012769228] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:31,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:31,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:31,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22919852] [2024-01-31 16:06:31,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:31,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:06:31,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:31,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:06:31,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:06:31,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-01-31 16:06:31,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 606 transitions, 14257 flow. Second operand has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:31,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:31,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-01-31 16:06:31,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:32,562 INFO L124 PetriNetUnfolderBase]: 3159/6211 cut-off events. [2024-01-31 16:06:32,562 INFO L125 PetriNetUnfolderBase]: For 234925/235902 co-relation queries the response was YES. [2024-01-31 16:06:32,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53945 conditions, 6211 events. 3159/6211 cut-off events. For 234925/235902 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 48069 event pairs, 642 based on Foata normal form. 76/6131 useless extension candidates. Maximal degree in co-relation 53841. Up to 5061 conditions per place. [2024-01-31 16:06:32,629 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 522 selfloop transitions, 65 changer transitions 0/636 dead transitions. [2024-01-31 16:06:32,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 636 transitions, 15748 flow [2024-01-31 16:06:32,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:06:32,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:06:32,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 261 transitions. [2024-01-31 16:06:32,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4237012987012987 [2024-01-31 16:06:32,630 INFO L175 Difference]: Start difference. First operand has 333 places, 606 transitions, 14257 flow. Second operand 8 states and 261 transitions. [2024-01-31 16:06:32,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 636 transitions, 15748 flow [2024-01-31 16:06:33,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 636 transitions, 15659 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-31 16:06:33,237 INFO L231 Difference]: Finished difference. Result has 336 places, 608 transitions, 14350 flow [2024-01-31 16:06:33,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=14168, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14350, PETRI_PLACES=336, PETRI_TRANSITIONS=608} [2024-01-31 16:06:33,237 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 255 predicate places. [2024-01-31 16:06:33,237 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 608 transitions, 14350 flow [2024-01-31 16:06:33,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:33,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:33,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:33,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-01-31 16:06:33,238 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:06:33,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:33,238 INFO L85 PathProgramCache]: Analyzing trace with hash -664230118, now seen corresponding path program 5 times [2024-01-31 16:06:33,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:33,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219179330] [2024-01-31 16:06:33,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:33,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:33,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:33,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:33,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:33,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219179330] [2024-01-31 16:06:33,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219179330] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:33,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:33,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:33,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477058944] [2024-01-31 16:06:33,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:33,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:06:33,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:33,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:06:33,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:06:33,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-01-31 16:06:33,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 608 transitions, 14350 flow. Second operand has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:33,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:33,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-01-31 16:06:33,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:34,950 INFO L124 PetriNetUnfolderBase]: 3179/6235 cut-off events. [2024-01-31 16:06:34,950 INFO L125 PetriNetUnfolderBase]: For 237755/238746 co-relation queries the response was YES. [2024-01-31 16:06:34,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54374 conditions, 6235 events. 3179/6235 cut-off events. For 237755/238746 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 48096 event pairs, 646 based on Foata normal form. 80/6155 useless extension candidates. Maximal degree in co-relation 54269. Up to 5021 conditions per place. [2024-01-31 16:06:35,011 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 519 selfloop transitions, 67 changer transitions 0/635 dead transitions. [2024-01-31 16:06:35,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 635 transitions, 15744 flow [2024-01-31 16:06:35,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:06:35,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:06:35,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 260 transitions. [2024-01-31 16:06:35,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42207792207792205 [2024-01-31 16:06:35,012 INFO L175 Difference]: Start difference. First operand has 336 places, 608 transitions, 14350 flow. Second operand 8 states and 260 transitions. [2024-01-31 16:06:35,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 635 transitions, 15744 flow [2024-01-31 16:06:35,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 635 transitions, 15623 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-01-31 16:06:35,599 INFO L231 Difference]: Finished difference. Result has 338 places, 608 transitions, 14377 flow [2024-01-31 16:06:35,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=14229, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14377, PETRI_PLACES=338, PETRI_TRANSITIONS=608} [2024-01-31 16:06:35,600 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 257 predicate places. [2024-01-31 16:06:35,600 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 608 transitions, 14377 flow [2024-01-31 16:06:35,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:35,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:35,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:35,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-01-31 16:06:35,600 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:06:35,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:35,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1903546232, now seen corresponding path program 4 times [2024-01-31 16:06:35,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:35,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885286986] [2024-01-31 16:06:35,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:35,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:35,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:35,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:35,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:35,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885286986] [2024-01-31 16:06:35,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885286986] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:35,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:35,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:35,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671872471] [2024-01-31 16:06:35,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:35,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:06:35,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:35,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:06:35,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:06:35,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:06:35,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 608 transitions, 14377 flow. Second operand has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:35,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:35,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:06:35,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:37,426 INFO L124 PetriNetUnfolderBase]: 3303/6310 cut-off events. [2024-01-31 16:06:37,426 INFO L125 PetriNetUnfolderBase]: For 239692/240647 co-relation queries the response was YES. [2024-01-31 16:06:37,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56133 conditions, 6310 events. 3303/6310 cut-off events. For 239692/240647 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 47311 event pairs, 492 based on Foata normal form. 57/6191 useless extension candidates. Maximal degree in co-relation 56027. Up to 2512 conditions per place. [2024-01-31 16:06:37,504 INFO L140 encePairwiseOnDemand]: 66/77 looper letters, 482 selfloop transitions, 173 changer transitions 2/696 dead transitions. [2024-01-31 16:06:37,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 696 transitions, 16877 flow [2024-01-31 16:06:37,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:06:37,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:06:37,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 281 transitions. [2024-01-31 16:06:37,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45616883116883117 [2024-01-31 16:06:37,505 INFO L175 Difference]: Start difference. First operand has 338 places, 608 transitions, 14377 flow. Second operand 8 states and 281 transitions. [2024-01-31 16:06:37,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 696 transitions, 16877 flow [2024-01-31 16:06:38,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 696 transitions, 16739 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-01-31 16:06:38,240 INFO L231 Difference]: Finished difference. Result has 340 places, 612 transitions, 14751 flow [2024-01-31 16:06:38,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=14239, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14751, PETRI_PLACES=340, PETRI_TRANSITIONS=612} [2024-01-31 16:06:38,241 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 259 predicate places. [2024-01-31 16:06:38,241 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 612 transitions, 14751 flow [2024-01-31 16:06:38,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:38,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:38,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:38,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-01-31 16:06:38,242 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:06:38,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:38,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1420065236, now seen corresponding path program 5 times [2024-01-31 16:06:38,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:38,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935266586] [2024-01-31 16:06:38,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:38,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:38,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:38,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:38,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:38,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935266586] [2024-01-31 16:06:38,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935266586] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:38,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:38,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:38,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551954505] [2024-01-31 16:06:38,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:38,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:06:38,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:38,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:06:38,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:06:38,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:06:38,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 612 transitions, 14751 flow. Second operand has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:38,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:38,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:06:38,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:40,045 INFO L124 PetriNetUnfolderBase]: 3299/6306 cut-off events. [2024-01-31 16:06:40,045 INFO L125 PetriNetUnfolderBase]: For 252645/253604 co-relation queries the response was YES. [2024-01-31 16:06:40,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57272 conditions, 6306 events. 3299/6306 cut-off events. For 252645/253604 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 47240 event pairs, 492 based on Foata normal form. 57/6187 useless extension candidates. Maximal degree in co-relation 57164. Up to 2512 conditions per place. [2024-01-31 16:06:40,117 INFO L140 encePairwiseOnDemand]: 66/77 looper letters, 487 selfloop transitions, 171 changer transitions 2/699 dead transitions. [2024-01-31 16:06:40,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 699 transitions, 17191 flow [2024-01-31 16:06:40,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:06:40,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:06:40,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 287 transitions. [2024-01-31 16:06:40,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4659090909090909 [2024-01-31 16:06:40,118 INFO L175 Difference]: Start difference. First operand has 340 places, 612 transitions, 14751 flow. Second operand 8 states and 287 transitions. [2024-01-31 16:06:40,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 699 transitions, 17191 flow [2024-01-31 16:06:40,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 699 transitions, 16818 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-31 16:06:40,771 INFO L231 Difference]: Finished difference. Result has 342 places, 613 transitions, 14746 flow [2024-01-31 16:06:40,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=14380, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14746, PETRI_PLACES=342, PETRI_TRANSITIONS=613} [2024-01-31 16:06:40,772 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 261 predicate places. [2024-01-31 16:06:40,772 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 613 transitions, 14746 flow [2024-01-31 16:06:40,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:40,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:40,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:40,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-01-31 16:06:40,773 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:06:40,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:40,773 INFO L85 PathProgramCache]: Analyzing trace with hash 577876300, now seen corresponding path program 6 times [2024-01-31 16:06:40,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:40,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121248799] [2024-01-31 16:06:40,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:40,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:40,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:40,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:40,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:40,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121248799] [2024-01-31 16:06:40,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121248799] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:40,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:40,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:40,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21806326] [2024-01-31 16:06:40,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:40,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:06:40,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:40,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:06:40,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:06:40,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:06:40,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 613 transitions, 14746 flow. Second operand has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:40,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:40,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:06:40,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:42,559 INFO L124 PetriNetUnfolderBase]: 3279/6271 cut-off events. [2024-01-31 16:06:42,559 INFO L125 PetriNetUnfolderBase]: For 249791/250719 co-relation queries the response was YES. [2024-01-31 16:06:42,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57095 conditions, 6271 events. 3279/6271 cut-off events. For 249791/250719 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 46915 event pairs, 448 based on Foata normal form. 37/6124 useless extension candidates. Maximal degree in co-relation 56986. Up to 2504 conditions per place. [2024-01-31 16:06:42,627 INFO L140 encePairwiseOnDemand]: 67/77 looper letters, 474 selfloop transitions, 177 changer transitions 2/692 dead transitions. [2024-01-31 16:06:42,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 692 transitions, 17089 flow [2024-01-31 16:06:42,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:06:42,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:06:42,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 278 transitions. [2024-01-31 16:06:42,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4512987012987013 [2024-01-31 16:06:42,628 INFO L175 Difference]: Start difference. First operand has 342 places, 613 transitions, 14746 flow. Second operand 8 states and 278 transitions. [2024-01-31 16:06:42,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 692 transitions, 17089 flow [2024-01-31 16:06:43,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 692 transitions, 16803 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-01-31 16:06:43,269 INFO L231 Difference]: Finished difference. Result has 346 places, 613 transitions, 14826 flow [2024-01-31 16:06:43,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=14460, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14826, PETRI_PLACES=346, PETRI_TRANSITIONS=613} [2024-01-31 16:06:43,270 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 265 predicate places. [2024-01-31 16:06:43,270 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 613 transitions, 14826 flow [2024-01-31 16:06:43,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:43,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:43,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:43,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-01-31 16:06:43,270 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:06:43,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:43,271 INFO L85 PathProgramCache]: Analyzing trace with hash -330195022, now seen corresponding path program 7 times [2024-01-31 16:06:43,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:43,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453009709] [2024-01-31 16:06:43,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:43,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:43,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:43,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:43,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:43,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453009709] [2024-01-31 16:06:43,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453009709] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:43,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:43,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:43,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590769904] [2024-01-31 16:06:43,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:43,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:06:43,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:43,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:06:43,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:06:43,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:06:43,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 613 transitions, 14826 flow. Second operand has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:43,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:43,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:06:43,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:45,057 INFO L124 PetriNetUnfolderBase]: 3331/6347 cut-off events. [2024-01-31 16:06:45,057 INFO L125 PetriNetUnfolderBase]: For 260669/261732 co-relation queries the response was YES. [2024-01-31 16:06:45,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57886 conditions, 6347 events. 3331/6347 cut-off events. For 260669/261732 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 47533 event pairs, 430 based on Foata normal form. 122/6315 useless extension candidates. Maximal degree in co-relation 57776. Up to 2530 conditions per place. [2024-01-31 16:06:45,130 INFO L140 encePairwiseOnDemand]: 59/77 looper letters, 405 selfloop transitions, 244 changer transitions 2/690 dead transitions. [2024-01-31 16:06:45,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 690 transitions, 17180 flow [2024-01-31 16:06:45,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:06:45,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:06:45,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 286 transitions. [2024-01-31 16:06:45,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-01-31 16:06:45,131 INFO L175 Difference]: Start difference. First operand has 346 places, 613 transitions, 14826 flow. Second operand 8 states and 286 transitions. [2024-01-31 16:06:45,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 690 transitions, 17180 flow [2024-01-31 16:06:45,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 690 transitions, 16948 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 16:06:45,836 INFO L231 Difference]: Finished difference. Result has 351 places, 634 transitions, 15533 flow [2024-01-31 16:06:45,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=14607, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15533, PETRI_PLACES=351, PETRI_TRANSITIONS=634} [2024-01-31 16:06:45,837 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 270 predicate places. [2024-01-31 16:06:45,837 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 634 transitions, 15533 flow [2024-01-31 16:06:45,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:45,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:45,838 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, 1, 1] [2024-01-31 16:06:45,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-01-31 16:06:45,838 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:06:45,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:45,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1683836112, now seen corresponding path program 8 times [2024-01-31 16:06:45,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:45,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870958163] [2024-01-31 16:06:45,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:45,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:45,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:46,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:46,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:46,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870958163] [2024-01-31 16:06:46,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870958163] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:46,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:46,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:46,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058231119] [2024-01-31 16:06:46,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:46,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:06:46,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:46,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:06:46,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:06:46,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:06:46,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 634 transitions, 15533 flow. Second operand has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:46,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:46,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:06:46,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:47,703 INFO L124 PetriNetUnfolderBase]: 3327/6343 cut-off events. [2024-01-31 16:06:47,703 INFO L125 PetriNetUnfolderBase]: For 275150/276221 co-relation queries the response was YES. [2024-01-31 16:06:47,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59607 conditions, 6343 events. 3327/6343 cut-off events. For 275150/276221 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 47521 event pairs, 430 based on Foata normal form. 118/6301 useless extension candidates. Maximal degree in co-relation 59495. Up to 2530 conditions per place. [2024-01-31 16:06:47,776 INFO L140 encePairwiseOnDemand]: 59/77 looper letters, 415 selfloop transitions, 237 changer transitions 2/693 dead transitions. [2024-01-31 16:06:47,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 693 transitions, 17647 flow [2024-01-31 16:06:47,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:06:47,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:06:47,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 292 transitions. [2024-01-31 16:06:47,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.474025974025974 [2024-01-31 16:06:47,777 INFO L175 Difference]: Start difference. First operand has 351 places, 634 transitions, 15533 flow. Second operand 8 states and 292 transitions. [2024-01-31 16:06:47,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 693 transitions, 17647 flow [2024-01-31 16:06:48,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 693 transitions, 17323 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-01-31 16:06:48,489 INFO L231 Difference]: Finished difference. Result has 354 places, 635 transitions, 15720 flow [2024-01-31 16:06:48,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=15218, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=236, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15720, PETRI_PLACES=354, PETRI_TRANSITIONS=635} [2024-01-31 16:06:48,490 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 273 predicate places. [2024-01-31 16:06:48,490 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 635 transitions, 15720 flow [2024-01-31 16:06:48,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:48,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:48,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:48,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-01-31 16:06:48,491 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:06:48,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:48,491 INFO L85 PathProgramCache]: Analyzing trace with hash 841647176, now seen corresponding path program 9 times [2024-01-31 16:06:48,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:48,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38993655] [2024-01-31 16:06:48,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:48,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:48,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:48,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:48,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:48,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38993655] [2024-01-31 16:06:48,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38993655] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:48,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:48,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:48,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719337875] [2024-01-31 16:06:48,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:48,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:06:48,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:48,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:06:48,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:06:48,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:06:48,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 635 transitions, 15720 flow. Second operand has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:48,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:48,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:06:48,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:50,560 INFO L124 PetriNetUnfolderBase]: 3427/6543 cut-off events. [2024-01-31 16:06:50,560 INFO L125 PetriNetUnfolderBase]: For 281822/282805 co-relation queries the response was YES. [2024-01-31 16:06:50,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61179 conditions, 6543 events. 3427/6543 cut-off events. For 281822/282805 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 49220 event pairs, 416 based on Foata normal form. 70/6435 useless extension candidates. Maximal degree in co-relation 61067. Up to 2574 conditions per place. [2024-01-31 16:06:50,632 INFO L140 encePairwiseOnDemand]: 60/77 looper letters, 418 selfloop transitions, 249 changer transitions 2/708 dead transitions. [2024-01-31 16:06:50,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 708 transitions, 18248 flow [2024-01-31 16:06:50,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:06:50,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:06:50,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 285 transitions. [2024-01-31 16:06:50,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46266233766233766 [2024-01-31 16:06:50,633 INFO L175 Difference]: Start difference. First operand has 354 places, 635 transitions, 15720 flow. Second operand 8 states and 285 transitions. [2024-01-31 16:06:50,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 708 transitions, 18248 flow [2024-01-31 16:06:51,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 708 transitions, 17799 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-01-31 16:06:51,309 INFO L231 Difference]: Finished difference. Result has 357 places, 652 transitions, 16323 flow [2024-01-31 16:06:51,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=15307, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=232, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16323, PETRI_PLACES=357, PETRI_TRANSITIONS=652} [2024-01-31 16:06:51,309 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 276 predicate places. [2024-01-31 16:06:51,310 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 652 transitions, 16323 flow [2024-01-31 16:06:51,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:51,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:51,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:51,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-01-31 16:06:51,310 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:06:51,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:51,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1615888462, now seen corresponding path program 10 times [2024-01-31 16:06:51,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:51,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73960448] [2024-01-31 16:06:51,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:51,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:51,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:51,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:51,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:51,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73960448] [2024-01-31 16:06:51,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73960448] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:51,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:51,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:51,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036002827] [2024-01-31 16:06:51,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:51,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:06:51,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:51,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:06:51,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:06:51,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:06:51,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 652 transitions, 16323 flow. Second operand has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:51,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:51,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:06:51,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:53,329 INFO L124 PetriNetUnfolderBase]: 3639/6942 cut-off events. [2024-01-31 16:06:53,329 INFO L125 PetriNetUnfolderBase]: For 291067/292124 co-relation queries the response was YES. [2024-01-31 16:06:53,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64426 conditions, 6942 events. 3639/6942 cut-off events. For 291067/292124 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 52773 event pairs, 406 based on Foata normal form. 62/6825 useless extension candidates. Maximal degree in co-relation 64313. Up to 2656 conditions per place. [2024-01-31 16:06:53,409 INFO L140 encePairwiseOnDemand]: 59/77 looper letters, 433 selfloop transitions, 263 changer transitions 2/737 dead transitions. [2024-01-31 16:06:53,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 737 transitions, 19047 flow [2024-01-31 16:06:53,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:06:53,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:06:53,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 291 transitions. [2024-01-31 16:06:53,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4724025974025974 [2024-01-31 16:06:53,412 INFO L175 Difference]: Start difference. First operand has 357 places, 652 transitions, 16323 flow. Second operand 8 states and 291 transitions. [2024-01-31 16:06:53,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 737 transitions, 19047 flow [2024-01-31 16:06:54,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 737 transitions, 18775 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 16:06:54,275 INFO L231 Difference]: Finished difference. Result has 363 places, 676 transitions, 17302 flow [2024-01-31 16:06:54,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=16069, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17302, PETRI_PLACES=363, PETRI_TRANSITIONS=676} [2024-01-31 16:06:54,276 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 282 predicate places. [2024-01-31 16:06:54,276 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 676 transitions, 17302 flow [2024-01-31 16:06:54,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:54,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:54,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:54,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-01-31 16:06:54,277 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:06:54,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:54,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1614967762, now seen corresponding path program 11 times [2024-01-31 16:06:54,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:54,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937390595] [2024-01-31 16:06:54,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:54,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:54,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:54,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:54,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:54,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937390595] [2024-01-31 16:06:54,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937390595] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:54,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:54,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:54,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115713859] [2024-01-31 16:06:54,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:54,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:06:54,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:54,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:06:54,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:06:54,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:06:54,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 676 transitions, 17302 flow. Second operand has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:54,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:54,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:06:54,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:56,389 INFO L124 PetriNetUnfolderBase]: 3635/6939 cut-off events. [2024-01-31 16:06:56,389 INFO L125 PetriNetUnfolderBase]: For 305777/306832 co-relation queries the response was YES. [2024-01-31 16:06:56,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65699 conditions, 6939 events. 3635/6939 cut-off events. For 305777/306832 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 52753 event pairs, 418 based on Foata normal form. 62/6823 useless extension candidates. Maximal degree in co-relation 65583. Up to 2656 conditions per place. [2024-01-31 16:06:56,472 INFO L140 encePairwiseOnDemand]: 59/77 looper letters, 423 selfloop transitions, 271 changer transitions 2/735 dead transitions. [2024-01-31 16:06:56,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 735 transitions, 19471 flow [2024-01-31 16:06:56,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:06:56,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:06:56,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 292 transitions. [2024-01-31 16:06:56,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.474025974025974 [2024-01-31 16:06:56,473 INFO L175 Difference]: Start difference. First operand has 363 places, 676 transitions, 17302 flow. Second operand 8 states and 292 transitions. [2024-01-31 16:06:56,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 735 transitions, 19471 flow [2024-01-31 16:06:57,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 735 transitions, 19143 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-01-31 16:06:57,256 INFO L231 Difference]: Finished difference. Result has 368 places, 678 transitions, 17646 flow [2024-01-31 16:06:57,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=16975, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=676, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=269, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17646, PETRI_PLACES=368, PETRI_TRANSITIONS=678} [2024-01-31 16:06:57,257 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 287 predicate places. [2024-01-31 16:06:57,257 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 678 transitions, 17646 flow [2024-01-31 16:06:57,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:57,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:57,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:57,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-01-31 16:06:57,258 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:06:57,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:57,258 INFO L85 PathProgramCache]: Analyzing trace with hash 529334194, now seen corresponding path program 12 times [2024-01-31 16:06:57,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:57,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078505014] [2024-01-31 16:06:57,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:57,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:57,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:57,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:57,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:57,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078505014] [2024-01-31 16:06:57,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078505014] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:57,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:57,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:57,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731556336] [2024-01-31 16:06:57,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:57,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:06:57,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:57,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:06:57,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:06:57,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:06:57,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 678 transitions, 17646 flow. Second operand has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:57,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:57,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:06:57,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:59,363 INFO L124 PetriNetUnfolderBase]: 3681/7028 cut-off events. [2024-01-31 16:06:59,363 INFO L125 PetriNetUnfolderBase]: For 324421/325512 co-relation queries the response was YES. [2024-01-31 16:06:59,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66735 conditions, 7028 events. 3681/7028 cut-off events. For 324421/325512 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 53629 event pairs, 418 based on Foata normal form. 64/6916 useless extension candidates. Maximal degree in co-relation 66617. Up to 2674 conditions per place. [2024-01-31 16:06:59,442 INFO L140 encePairwiseOnDemand]: 59/77 looper letters, 423 selfloop transitions, 273 changer transitions 2/737 dead transitions. [2024-01-31 16:06:59,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 737 transitions, 19816 flow [2024-01-31 16:06:59,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:06:59,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:06:59,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 282 transitions. [2024-01-31 16:06:59,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4577922077922078 [2024-01-31 16:06:59,443 INFO L175 Difference]: Start difference. First operand has 368 places, 678 transitions, 17646 flow. Second operand 8 states and 282 transitions. [2024-01-31 16:06:59,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 737 transitions, 19816 flow [2024-01-31 16:07:00,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 737 transitions, 19199 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-31 16:07:00,181 INFO L231 Difference]: Finished difference. Result has 371 places, 684 transitions, 17762 flow [2024-01-31 16:07:00,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=17041, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=678, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=267, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17762, PETRI_PLACES=371, PETRI_TRANSITIONS=684} [2024-01-31 16:07:00,182 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 290 predicate places. [2024-01-31 16:07:00,182 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 684 transitions, 17762 flow [2024-01-31 16:07:00,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:00,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:00,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:00,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-01-31 16:07:00,183 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:07:00,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:00,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1263253366, now seen corresponding path program 13 times [2024-01-31 16:07:00,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:00,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550034598] [2024-01-31 16:07:00,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:00,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:00,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:00,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:00,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:00,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550034598] [2024-01-31 16:07:00,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550034598] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:00,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:00,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:07:00,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052634610] [2024-01-31 16:07:00,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:00,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:07:00,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:00,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:07:00,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:07:00,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:07:00,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 684 transitions, 17762 flow. Second operand has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:00,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:00,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:07:00,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:02,342 INFO L124 PetriNetUnfolderBase]: 3809/7205 cut-off events. [2024-01-31 16:07:02,342 INFO L125 PetriNetUnfolderBase]: For 326250/327369 co-relation queries the response was YES. [2024-01-31 16:07:02,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67541 conditions, 7205 events. 3809/7205 cut-off events. For 326250/327369 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 54641 event pairs, 347 based on Foata normal form. 54/7081 useless extension candidates. Maximal degree in co-relation 67421. Up to 2718 conditions per place. [2024-01-31 16:07:02,432 INFO L140 encePairwiseOnDemand]: 60/77 looper letters, 412 selfloop transitions, 288 changer transitions 2/741 dead transitions. [2024-01-31 16:07:02,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 741 transitions, 19927 flow [2024-01-31 16:07:02,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:07:02,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:07:02,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 279 transitions. [2024-01-31 16:07:02,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45292207792207795 [2024-01-31 16:07:02,433 INFO L175 Difference]: Start difference. First operand has 371 places, 684 transitions, 17762 flow. Second operand 8 states and 279 transitions. [2024-01-31 16:07:02,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 741 transitions, 19927 flow [2024-01-31 16:07:03,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 741 transitions, 19503 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-01-31 16:07:03,396 INFO L231 Difference]: Finished difference. Result has 376 places, 698 transitions, 18306 flow [2024-01-31 16:07:03,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=17357, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=684, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=274, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18306, PETRI_PLACES=376, PETRI_TRANSITIONS=698} [2024-01-31 16:07:03,396 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 295 predicate places. [2024-01-31 16:07:03,396 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 698 transitions, 18306 flow [2024-01-31 16:07:03,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:03,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:03,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:03,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-01-31 16:07:03,397 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:07:03,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:03,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1532921430, now seen corresponding path program 1 times [2024-01-31 16:07:03,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:03,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103919121] [2024-01-31 16:07:03,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:03,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:03,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:03,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:03,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:03,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103919121] [2024-01-31 16:07:03,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103919121] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:03,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:03,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:07:03,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332722119] [2024-01-31 16:07:03,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:03,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:07:03,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:03,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:07:03,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:07:03,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:07:03,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 698 transitions, 18306 flow. Second operand has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:03,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:03,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:07:03,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:05,835 INFO L124 PetriNetUnfolderBase]: 3911/7665 cut-off events. [2024-01-31 16:07:05,835 INFO L125 PetriNetUnfolderBase]: For 346590/347744 co-relation queries the response was YES. [2024-01-31 16:07:05,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72327 conditions, 7665 events. 3911/7665 cut-off events. For 346590/347744 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 60863 event pairs, 821 based on Foata normal form. 44/7521 useless extension candidates. Maximal degree in co-relation 72205. Up to 2893 conditions per place. [2024-01-31 16:07:05,933 INFO L140 encePairwiseOnDemand]: 65/77 looper letters, 617 selfloop transitions, 143 changer transitions 34/833 dead transitions. [2024-01-31 16:07:05,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 833 transitions, 21819 flow [2024-01-31 16:07:05,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:07:05,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:07:05,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 289 transitions. [2024-01-31 16:07:05,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46915584415584416 [2024-01-31 16:07:05,935 INFO L175 Difference]: Start difference. First operand has 376 places, 698 transitions, 18306 flow. Second operand 8 states and 289 transitions. [2024-01-31 16:07:05,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 833 transitions, 21819 flow [2024-01-31 16:07:06,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 833 transitions, 21158 flow, removed 60 selfloop flow, removed 8 redundant places. [2024-01-31 16:07:06,886 INFO L231 Difference]: Finished difference. Result has 378 places, 680 transitions, 17651 flow [2024-01-31 16:07:06,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=17705, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=698, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=560, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17651, PETRI_PLACES=378, PETRI_TRANSITIONS=680} [2024-01-31 16:07:06,887 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 297 predicate places. [2024-01-31 16:07:06,887 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 680 transitions, 17651 flow [2024-01-31 16:07:06,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:06,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:06,887 INFO L208 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] [2024-01-31 16:07:06,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-01-31 16:07:06,887 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:07:06,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:06,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1794749180, now seen corresponding path program 2 times [2024-01-31 16:07:06,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:06,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570872649] [2024-01-31 16:07:06,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:06,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:06,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:07,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:07,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:07,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570872649] [2024-01-31 16:07:07,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570872649] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:07,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:07,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:07:07,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238393183] [2024-01-31 16:07:07,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:07,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:07:07,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:07,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:07:07,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:07:07,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:07:07,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 680 transitions, 17651 flow. Second operand has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:07,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:07,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:07:07,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:09,254 INFO L124 PetriNetUnfolderBase]: 3787/7493 cut-off events. [2024-01-31 16:07:09,254 INFO L125 PetriNetUnfolderBase]: For 330052/331234 co-relation queries the response was YES. [2024-01-31 16:07:09,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69435 conditions, 7493 events. 3787/7493 cut-off events. For 330052/331234 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 59857 event pairs, 818 based on Foata normal form. 36/7341 useless extension candidates. Maximal degree in co-relation 69312. Up to 2893 conditions per place. [2024-01-31 16:07:09,346 INFO L140 encePairwiseOnDemand]: 65/77 looper letters, 631 selfloop transitions, 129 changer transitions 5/804 dead transitions. [2024-01-31 16:07:09,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 804 transitions, 20876 flow [2024-01-31 16:07:09,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:07:09,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:07:09,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 284 transitions. [2024-01-31 16:07:09,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.461038961038961 [2024-01-31 16:07:09,347 INFO L175 Difference]: Start difference. First operand has 378 places, 680 transitions, 17651 flow. Second operand 8 states and 284 transitions. [2024-01-31 16:07:09,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 804 transitions, 20876 flow [2024-01-31 16:07:10,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 804 transitions, 20633 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-31 16:07:10,245 INFO L231 Difference]: Finished difference. Result has 381 places, 676 transitions, 17610 flow [2024-01-31 16:07:10,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=17408, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=680, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17610, PETRI_PLACES=381, PETRI_TRANSITIONS=676} [2024-01-31 16:07:10,245 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 300 predicate places. [2024-01-31 16:07:10,245 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 676 transitions, 17610 flow [2024-01-31 16:07:10,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:10,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:10,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:10,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-01-31 16:07:10,246 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:07:10,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:10,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1443285318, now seen corresponding path program 3 times [2024-01-31 16:07:10,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:10,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718482716] [2024-01-31 16:07:10,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:10,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:10,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:10,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:10,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:10,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718482716] [2024-01-31 16:07:10,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718482716] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:10,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:10,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:07:10,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644045329] [2024-01-31 16:07:10,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:10,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:07:10,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:10,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:07:10,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:07:10,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:07:10,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 676 transitions, 17610 flow. Second operand has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:10,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:10,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:07:10,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:12,773 INFO L124 PetriNetUnfolderBase]: 3790/7566 cut-off events. [2024-01-31 16:07:12,773 INFO L125 PetriNetUnfolderBase]: For 331860/333084 co-relation queries the response was YES. [2024-01-31 16:07:12,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69856 conditions, 7566 events. 3790/7566 cut-off events. For 331860/333084 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 61001 event pairs, 823 based on Foata normal form. 38/7419 useless extension candidates. Maximal degree in co-relation 69732. Up to 2893 conditions per place. [2024-01-31 16:07:12,850 INFO L140 encePairwiseOnDemand]: 66/77 looper letters, 650 selfloop transitions, 107 changer transitions 3/799 dead transitions. [2024-01-31 16:07:12,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 799 transitions, 20800 flow [2024-01-31 16:07:12,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:07:12,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:07:12,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 285 transitions. [2024-01-31 16:07:12,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46266233766233766 [2024-01-31 16:07:12,851 INFO L175 Difference]: Start difference. First operand has 381 places, 676 transitions, 17610 flow. Second operand 8 states and 285 transitions. [2024-01-31 16:07:12,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 799 transitions, 20800 flow [2024-01-31 16:07:13,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 799 transitions, 20580 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-31 16:07:13,714 INFO L231 Difference]: Finished difference. Result has 384 places, 674 transitions, 17577 flow [2024-01-31 16:07:13,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=17390, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=676, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=569, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17577, PETRI_PLACES=384, PETRI_TRANSITIONS=674} [2024-01-31 16:07:13,715 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 303 predicate places. [2024-01-31 16:07:13,715 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 674 transitions, 17577 flow [2024-01-31 16:07:13,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:13,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:13,715 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, 1, 1, 1, 1] [2024-01-31 16:07:13,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-01-31 16:07:13,715 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:07:13,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:13,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1260418466, now seen corresponding path program 1 times [2024-01-31 16:07:13,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:13,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521741786] [2024-01-31 16:07:13,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:13,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:13,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:13,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:13,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:13,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521741786] [2024-01-31 16:07:13,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521741786] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:13,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:13,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:07:13,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286119818] [2024-01-31 16:07:13,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:13,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:07:13,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:13,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:07:13,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:07:13,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-01-31 16:07:13,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 674 transitions, 17577 flow. Second operand has 9 states, 9 states have (on average 25.11111111111111) internal successors, (226), 9 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:13,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:13,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-01-31 16:07:13,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:16,093 INFO L124 PetriNetUnfolderBase]: 3669/7527 cut-off events. [2024-01-31 16:07:16,093 INFO L125 PetriNetUnfolderBase]: For 334112/335183 co-relation queries the response was YES. [2024-01-31 16:07:16,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69117 conditions, 7527 events. 3669/7527 cut-off events. For 334112/335183 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 62288 event pairs, 767 based on Foata normal form. 119/7452 useless extension candidates. Maximal degree in co-relation 68992. Up to 2742 conditions per place. [2024-01-31 16:07:16,183 INFO L140 encePairwiseOnDemand]: 66/77 looper letters, 445 selfloop transitions, 180 changer transitions 36/712 dead transitions. [2024-01-31 16:07:16,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 712 transitions, 19430 flow [2024-01-31 16:07:16,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:07:16,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:07:16,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 244 transitions. [2024-01-31 16:07:16,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45269016697588127 [2024-01-31 16:07:16,184 INFO L175 Difference]: Start difference. First operand has 384 places, 674 transitions, 17577 flow. Second operand 7 states and 244 transitions. [2024-01-31 16:07:16,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 712 transitions, 19430 flow [2024-01-31 16:07:17,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 712 transitions, 19116 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-31 16:07:17,128 INFO L231 Difference]: Finished difference. Result has 385 places, 637 transitions, 16958 flow [2024-01-31 16:07:17,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=17246, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=672, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16958, PETRI_PLACES=385, PETRI_TRANSITIONS=637} [2024-01-31 16:07:17,129 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 304 predicate places. [2024-01-31 16:07:17,129 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 637 transitions, 16958 flow [2024-01-31 16:07:17,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 25.11111111111111) internal successors, (226), 9 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:17,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:17,129 INFO L208 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] [2024-01-31 16:07:17,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-01-31 16:07:17,130 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:07:17,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:17,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1920772544, now seen corresponding path program 4 times [2024-01-31 16:07:17,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:17,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311675158] [2024-01-31 16:07:17,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:17,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:17,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:17,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:17,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:17,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311675158] [2024-01-31 16:07:17,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311675158] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:17,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:17,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:07:17,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757991230] [2024-01-31 16:07:17,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:17,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:07:17,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:17,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:07:17,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:07:17,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:07:17,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 637 transitions, 16958 flow. Second operand has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:17,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:17,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:07:17,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:19,361 INFO L124 PetriNetUnfolderBase]: 3574/7180 cut-off events. [2024-01-31 16:07:19,361 INFO L125 PetriNetUnfolderBase]: For 331224/332268 co-relation queries the response was YES. [2024-01-31 16:07:19,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66703 conditions, 7180 events. 3574/7180 cut-off events. For 331224/332268 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 57458 event pairs, 836 based on Foata normal form. 30/7023 useless extension candidates. Maximal degree in co-relation 66577. Up to 2847 conditions per place. [2024-01-31 16:07:19,453 INFO L140 encePairwiseOnDemand]: 65/77 looper letters, 551 selfloop transitions, 134 changer transitions 19/743 dead transitions. [2024-01-31 16:07:19,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 743 transitions, 19837 flow [2024-01-31 16:07:19,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:07:19,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:07:19,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 279 transitions. [2024-01-31 16:07:19,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45292207792207795 [2024-01-31 16:07:19,454 INFO L175 Difference]: Start difference. First operand has 385 places, 637 transitions, 16958 flow. Second operand 8 states and 279 transitions. [2024-01-31 16:07:19,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 743 transitions, 19837 flow [2024-01-31 16:07:20,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 743 transitions, 19290 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-01-31 16:07:20,405 INFO L231 Difference]: Finished difference. Result has 384 places, 621 transitions, 16360 flow [2024-01-31 16:07:20,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=16423, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=503, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=16360, PETRI_PLACES=384, PETRI_TRANSITIONS=621} [2024-01-31 16:07:20,406 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 303 predicate places. [2024-01-31 16:07:20,406 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 621 transitions, 16360 flow [2024-01-31 16:07:20,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:20,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:20,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:20,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-01-31 16:07:20,407 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:07:20,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:20,407 INFO L85 PathProgramCache]: Analyzing trace with hash 736613874, now seen corresponding path program 2 times [2024-01-31 16:07:20,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:20,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407269825] [2024-01-31 16:07:20,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:20,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:20,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:20,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:20,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:20,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407269825] [2024-01-31 16:07:20,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407269825] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:20,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:20,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:07:20,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729627101] [2024-01-31 16:07:20,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:20,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:07:20,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:20,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:07:20,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:07:20,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-01-31 16:07:20,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 621 transitions, 16360 flow. Second operand has 9 states, 9 states have (on average 25.11111111111111) internal successors, (226), 9 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:20,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:20,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-01-31 16:07:20,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:22,591 INFO L124 PetriNetUnfolderBase]: 3313/6941 cut-off events. [2024-01-31 16:07:22,591 INFO L125 PetriNetUnfolderBase]: For 309690/310702 co-relation queries the response was YES. [2024-01-31 16:07:22,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62972 conditions, 6941 events. 3313/6941 cut-off events. For 309690/310702 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 57271 event pairs, 717 based on Foata normal form. 81/6847 useless extension candidates. Maximal degree in co-relation 62847. Up to 3320 conditions per place. [2024-01-31 16:07:22,663 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 423 selfloop transitions, 125 changer transitions 56/651 dead transitions. [2024-01-31 16:07:22,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 651 transitions, 17886 flow [2024-01-31 16:07:22,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:07:22,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:07:22,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 238 transitions. [2024-01-31 16:07:22,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44155844155844154 [2024-01-31 16:07:22,665 INFO L175 Difference]: Start difference. First operand has 384 places, 621 transitions, 16360 flow. Second operand 7 states and 238 transitions. [2024-01-31 16:07:22,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 651 transitions, 17886 flow [2024-01-31 16:07:23,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 651 transitions, 17553 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-01-31 16:07:23,447 INFO L231 Difference]: Finished difference. Result has 380 places, 565 transitions, 15153 flow [2024-01-31 16:07:23,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=16027, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15153, PETRI_PLACES=380, PETRI_TRANSITIONS=565} [2024-01-31 16:07:23,448 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 299 predicate places. [2024-01-31 16:07:23,448 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 565 transitions, 15153 flow [2024-01-31 16:07:23,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 25.11111111111111) internal successors, (226), 9 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:23,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:23,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:23,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-01-31 16:07:23,448 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:07:23,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:23,449 INFO L85 PathProgramCache]: Analyzing trace with hash -2133974492, now seen corresponding path program 3 times [2024-01-31 16:07:23,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:23,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79722391] [2024-01-31 16:07:23,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:23,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:23,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:23,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:23,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:23,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79722391] [2024-01-31 16:07:23,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79722391] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:23,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:23,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:07:23,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043468509] [2024-01-31 16:07:23,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:23,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:07:23,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:23,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:07:23,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:07:23,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-01-31 16:07:23,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 565 transitions, 15153 flow. Second operand has 10 states, 10 states have (on average 24.9) internal successors, (249), 10 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:23,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:23,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-01-31 16:07:23,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:25,486 INFO L124 PetriNetUnfolderBase]: 3141/6608 cut-off events. [2024-01-31 16:07:25,486 INFO L125 PetriNetUnfolderBase]: For 290703/291723 co-relation queries the response was YES. [2024-01-31 16:07:25,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59835 conditions, 6608 events. 3141/6608 cut-off events. For 290703/291723 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 54199 event pairs, 858 based on Foata normal form. 57/6501 useless extension candidates. Maximal degree in co-relation 59713. Up to 5329 conditions per place. [2024-01-31 16:07:25,567 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 490 selfloop transitions, 36 changer transitions 28/601 dead transitions. [2024-01-31 16:07:25,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 601 transitions, 16706 flow [2024-01-31 16:07:25,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:07:25,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:07:25,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 259 transitions. [2024-01-31 16:07:25,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-01-31 16:07:25,570 INFO L175 Difference]: Start difference. First operand has 380 places, 565 transitions, 15153 flow. Second operand 8 states and 259 transitions. [2024-01-31 16:07:25,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 601 transitions, 16706 flow [2024-01-31 16:07:26,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 601 transitions, 16227 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-01-31 16:07:26,309 INFO L231 Difference]: Finished difference. Result has 376 places, 541 transitions, 14286 flow [2024-01-31 16:07:26,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=14684, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=529, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14286, PETRI_PLACES=376, PETRI_TRANSITIONS=541} [2024-01-31 16:07:26,310 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 295 predicate places. [2024-01-31 16:07:26,310 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 541 transitions, 14286 flow [2024-01-31 16:07:26,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.9) internal successors, (249), 10 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:26,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:26,311 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, 1, 1, 1, 1] [2024-01-31 16:07:26,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-01-31 16:07:26,311 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:07:26,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:26,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1153446686, now seen corresponding path program 4 times [2024-01-31 16:07:26,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:26,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115411271] [2024-01-31 16:07:26,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:26,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:26,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:26,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:26,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115411271] [2024-01-31 16:07:26,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115411271] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:26,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:26,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:07:26,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823105383] [2024-01-31 16:07:26,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:26,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:07:26,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:26,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:07:26,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:07:26,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-01-31 16:07:26,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 541 transitions, 14286 flow. Second operand has 10 states, 10 states have (on average 24.9) internal successors, (249), 10 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:26,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:26,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-01-31 16:07:26,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:28,186 INFO L124 PetriNetUnfolderBase]: 3096/6539 cut-off events. [2024-01-31 16:07:28,186 INFO L125 PetriNetUnfolderBase]: For 274822/275825 co-relation queries the response was YES. [2024-01-31 16:07:28,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58022 conditions, 6539 events. 3096/6539 cut-off events. For 274822/275825 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 53666 event pairs, 860 based on Foata normal form. 56/6431 useless extension candidates. Maximal degree in co-relation 57902. Up to 5175 conditions per place. [2024-01-31 16:07:28,267 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 475 selfloop transitions, 35 changer transitions 15/572 dead transitions. [2024-01-31 16:07:28,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 572 transitions, 15722 flow [2024-01-31 16:07:28,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:07:28,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:07:28,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 231 transitions. [2024-01-31 16:07:28,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-01-31 16:07:28,268 INFO L175 Difference]: Start difference. First operand has 376 places, 541 transitions, 14286 flow. Second operand 7 states and 231 transitions. [2024-01-31 16:07:28,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 572 transitions, 15722 flow [2024-01-31 16:07:28,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 572 transitions, 15614 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-01-31 16:07:28,969 INFO L231 Difference]: Finished difference. Result has 370 places, 528 transitions, 13996 flow [2024-01-31 16:07:28,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=14178, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13996, PETRI_PLACES=370, PETRI_TRANSITIONS=528} [2024-01-31 16:07:28,970 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 289 predicate places. [2024-01-31 16:07:28,970 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 528 transitions, 13996 flow [2024-01-31 16:07:28,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.9) internal successors, (249), 10 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:28,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:28,970 INFO L208 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] [2024-01-31 16:07:28,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-01-31 16:07:28,970 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:07:28,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:28,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1154041332, now seen corresponding path program 5 times [2024-01-31 16:07:28,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:28,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444699604] [2024-01-31 16:07:28,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:28,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:28,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:29,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:29,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:29,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444699604] [2024-01-31 16:07:29,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444699604] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:29,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:29,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:07:29,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518354249] [2024-01-31 16:07:29,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:29,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:07:29,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:29,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:07:29,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:07:29,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 77 [2024-01-31 16:07:29,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 528 transitions, 13996 flow. Second operand has 10 states, 10 states have (on average 24.9) internal successors, (249), 10 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:29,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:29,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 77 [2024-01-31 16:07:29,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:31,048 INFO L124 PetriNetUnfolderBase]: 3091/6517 cut-off events. [2024-01-31 16:07:31,049 INFO L125 PetriNetUnfolderBase]: For 274137/275151 co-relation queries the response was YES. [2024-01-31 16:07:31,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57911 conditions, 6517 events. 3091/6517 cut-off events. For 274137/275151 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 53270 event pairs, 862 based on Foata normal form. 58/6405 useless extension candidates. Maximal degree in co-relation 57791. Up to 5021 conditions per place. [2024-01-31 16:07:31,106 INFO L140 encePairwiseOnDemand]: 70/77 looper letters, 455 selfloop transitions, 31 changer transitions 18/551 dead transitions. [2024-01-31 16:07:31,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 551 transitions, 15170 flow [2024-01-31 16:07:31,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:07:31,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:07:31,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 228 transitions. [2024-01-31 16:07:31,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4230055658627087 [2024-01-31 16:07:31,120 INFO L175 Difference]: Start difference. First operand has 370 places, 528 transitions, 13996 flow. Second operand 7 states and 228 transitions. [2024-01-31 16:07:31,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 551 transitions, 15170 flow [2024-01-31 16:07:31,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 551 transitions, 14860 flow, removed 0 selfloop flow, removed 15 redundant places. [2024-01-31 16:07:31,730 INFO L231 Difference]: Finished difference. Result has 359 places, 509 transitions, 13395 flow [2024-01-31 16:07:31,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=13646, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13395, PETRI_PLACES=359, PETRI_TRANSITIONS=509} [2024-01-31 16:07:31,730 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 278 predicate places. [2024-01-31 16:07:31,730 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 509 transitions, 13395 flow [2024-01-31 16:07:31,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.9) internal successors, (249), 10 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:31,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:31,731 INFO L208 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] [2024-01-31 16:07:31,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-01-31 16:07:31,731 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:07:31,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:31,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1429110420, now seen corresponding path program 5 times [2024-01-31 16:07:31,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:31,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146323803] [2024-01-31 16:07:31,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:31,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:31,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:31,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:31,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:31,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146323803] [2024-01-31 16:07:31,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146323803] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:31,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:31,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:07:31,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188227973] [2024-01-31 16:07:31,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:31,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:07:31,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:31,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:07:31,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:07:31,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:07:31,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 509 transitions, 13395 flow. Second operand has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:31,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:31,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:07:31,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:33,692 INFO L124 PetriNetUnfolderBase]: 3276/6607 cut-off events. [2024-01-31 16:07:33,692 INFO L125 PetriNetUnfolderBase]: For 270990/272008 co-relation queries the response was YES. [2024-01-31 16:07:33,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58758 conditions, 6607 events. 3276/6607 cut-off events. For 270990/272008 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 51811 event pairs, 843 based on Foata normal form. 55/6507 useless extension candidates. Maximal degree in co-relation 58645. Up to 2685 conditions per place. [2024-01-31 16:07:33,771 INFO L140 encePairwiseOnDemand]: 64/77 looper letters, 471 selfloop transitions, 90 changer transitions 15/610 dead transitions. [2024-01-31 16:07:33,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 610 transitions, 15878 flow [2024-01-31 16:07:33,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:07:33,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:07:33,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 298 transitions. [2024-01-31 16:07:33,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43001443001443 [2024-01-31 16:07:33,772 INFO L175 Difference]: Start difference. First operand has 359 places, 509 transitions, 13395 flow. Second operand 9 states and 298 transitions. [2024-01-31 16:07:33,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 610 transitions, 15878 flow [2024-01-31 16:07:34,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 610 transitions, 15623 flow, removed 0 selfloop flow, removed 16 redundant places. [2024-01-31 16:07:34,452 INFO L231 Difference]: Finished difference. Result has 352 places, 498 transitions, 13061 flow [2024-01-31 16:07:34,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=13140, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13061, PETRI_PLACES=352, PETRI_TRANSITIONS=498} [2024-01-31 16:07:34,452 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 271 predicate places. [2024-01-31 16:07:34,453 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 498 transitions, 13061 flow [2024-01-31 16:07:34,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:34,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:34,453 INFO L208 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] [2024-01-31 16:07:34,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-01-31 16:07:34,453 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:07:34,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:34,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1212588494, now seen corresponding path program 6 times [2024-01-31 16:07:34,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:34,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037659442] [2024-01-31 16:07:34,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:34,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:34,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:34,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:34,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:34,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037659442] [2024-01-31 16:07:34,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037659442] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:34,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:34,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:07:34,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176412197] [2024-01-31 16:07:34,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:34,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:07:34,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:34,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:07:34,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:07:34,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:07:34,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 498 transitions, 13061 flow. Second operand has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:34,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:34,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:07:34,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:36,427 INFO L124 PetriNetUnfolderBase]: 3184/6455 cut-off events. [2024-01-31 16:07:36,427 INFO L125 PetriNetUnfolderBase]: For 266483/267501 co-relation queries the response was YES. [2024-01-31 16:07:36,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56722 conditions, 6455 events. 3184/6455 cut-off events. For 266483/267501 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 50534 event pairs, 846 based on Foata normal form. 54/6362 useless extension candidates. Maximal degree in co-relation 56612. Up to 2685 conditions per place. [2024-01-31 16:07:36,491 INFO L140 encePairwiseOnDemand]: 64/77 looper letters, 464 selfloop transitions, 82 changer transitions 19/599 dead transitions. [2024-01-31 16:07:36,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 599 transitions, 15534 flow [2024-01-31 16:07:36,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:07:36,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:07:36,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 307 transitions. [2024-01-31 16:07:36,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.443001443001443 [2024-01-31 16:07:36,492 INFO L175 Difference]: Start difference. First operand has 352 places, 498 transitions, 13061 flow. Second operand 9 states and 307 transitions. [2024-01-31 16:07:36,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 599 transitions, 15534 flow [2024-01-31 16:07:37,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 599 transitions, 15154 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-01-31 16:07:37,134 INFO L231 Difference]: Finished difference. Result has 350 places, 486 transitions, 12509 flow [2024-01-31 16:07:37,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=12684, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12509, PETRI_PLACES=350, PETRI_TRANSITIONS=486} [2024-01-31 16:07:37,135 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 269 predicate places. [2024-01-31 16:07:37,135 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 486 transitions, 12509 flow [2024-01-31 16:07:37,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:37,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:37,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:37,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-01-31 16:07:37,135 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:07:37,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:37,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1572295156, now seen corresponding path program 7 times [2024-01-31 16:07:37,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:37,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342473556] [2024-01-31 16:07:37,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:37,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:37,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:37,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:37,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:37,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342473556] [2024-01-31 16:07:37,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342473556] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:37,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:37,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:07:37,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478128552] [2024-01-31 16:07:37,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:37,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:07:37,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:37,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:07:37,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:07:37,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:07:37,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 486 transitions, 12509 flow. Second operand has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:37,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:37,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:07:37,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:38,933 INFO L124 PetriNetUnfolderBase]: 3070/6235 cut-off events. [2024-01-31 16:07:38,933 INFO L125 PetriNetUnfolderBase]: For 239744/240718 co-relation queries the response was YES. [2024-01-31 16:07:38,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54118 conditions, 6235 events. 3070/6235 cut-off events. For 239744/240718 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 48510 event pairs, 817 based on Foata normal form. 34/6126 useless extension candidates. Maximal degree in co-relation 54007. Up to 2721 conditions per place. [2024-01-31 16:07:39,007 INFO L140 encePairwiseOnDemand]: 67/77 looper letters, 441 selfloop transitions, 65 changer transitions 24/564 dead transitions. [2024-01-31 16:07:39,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 564 transitions, 14639 flow [2024-01-31 16:07:39,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:07:39,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:07:39,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 265 transitions. [2024-01-31 16:07:39,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4301948051948052 [2024-01-31 16:07:39,008 INFO L175 Difference]: Start difference. First operand has 350 places, 486 transitions, 12509 flow. Second operand 8 states and 265 transitions. [2024-01-31 16:07:39,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 564 transitions, 14639 flow [2024-01-31 16:07:39,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 564 transitions, 14472 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-01-31 16:07:39,649 INFO L231 Difference]: Finished difference. Result has 350 places, 466 transitions, 12021 flow [2024-01-31 16:07:39,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=12342, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12021, PETRI_PLACES=350, PETRI_TRANSITIONS=466} [2024-01-31 16:07:39,649 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 269 predicate places. [2024-01-31 16:07:39,649 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 466 transitions, 12021 flow [2024-01-31 16:07:39,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:39,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:39,649 INFO L208 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] [2024-01-31 16:07:39,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-01-31 16:07:39,650 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:07:39,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:39,650 INFO L85 PathProgramCache]: Analyzing trace with hash -532896226, now seen corresponding path program 8 times [2024-01-31 16:07:39,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:39,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627116883] [2024-01-31 16:07:39,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:39,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:39,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:39,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:39,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:39,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627116883] [2024-01-31 16:07:39,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627116883] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:39,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:39,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:07:39,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30278269] [2024-01-31 16:07:39,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:39,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:07:39,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:39,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:07:39,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:07:39,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:07:39,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 466 transitions, 12021 flow. Second operand has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:39,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:39,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:07:39,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:41,396 INFO L124 PetriNetUnfolderBase]: 3097/6311 cut-off events. [2024-01-31 16:07:41,396 INFO L125 PetriNetUnfolderBase]: For 233365/234278 co-relation queries the response was YES. [2024-01-31 16:07:41,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53806 conditions, 6311 events. 3097/6311 cut-off events. For 233365/234278 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 48894 event pairs, 675 based on Foata normal form. 46/6227 useless extension candidates. Maximal degree in co-relation 53694. Up to 3279 conditions per place. [2024-01-31 16:07:41,467 INFO L140 encePairwiseOnDemand]: 59/77 looper letters, 344 selfloop transitions, 132 changer transitions 16/526 dead transitions. [2024-01-31 16:07:41,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 526 transitions, 13718 flow [2024-01-31 16:07:41,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:07:41,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:07:41,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 281 transitions. [2024-01-31 16:07:41,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45616883116883117 [2024-01-31 16:07:41,468 INFO L175 Difference]: Start difference. First operand has 350 places, 466 transitions, 12021 flow. Second operand 8 states and 281 transitions. [2024-01-31 16:07:41,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 526 transitions, 13718 flow [2024-01-31 16:07:42,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 526 transitions, 13442 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-01-31 16:07:42,104 INFO L231 Difference]: Finished difference. Result has 347 places, 452 transitions, 11792 flow [2024-01-31 16:07:42,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=11745, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11792, PETRI_PLACES=347, PETRI_TRANSITIONS=452} [2024-01-31 16:07:42,105 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 266 predicate places. [2024-01-31 16:07:42,105 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 452 transitions, 11792 flow [2024-01-31 16:07:42,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:42,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:42,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:42,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-01-31 16:07:42,106 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:07:42,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:42,106 INFO L85 PathProgramCache]: Analyzing trace with hash -559590946, now seen corresponding path program 9 times [2024-01-31 16:07:42,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:42,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131981104] [2024-01-31 16:07:42,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:42,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:42,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:42,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:42,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:42,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131981104] [2024-01-31 16:07:42,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131981104] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:42,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:42,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:07:42,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353126105] [2024-01-31 16:07:42,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:42,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:07:42,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:42,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:07:42,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:07:42,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:07:42,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 452 transitions, 11792 flow. Second operand has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:42,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:42,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:07:42,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:43,861 INFO L124 PetriNetUnfolderBase]: 3049/6251 cut-off events. [2024-01-31 16:07:43,862 INFO L125 PetriNetUnfolderBase]: For 228046/228983 co-relation queries the response was YES. [2024-01-31 16:07:43,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53969 conditions, 6251 events. 3049/6251 cut-off events. For 228046/228983 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 48486 event pairs, 682 based on Foata normal form. 50/6175 useless extension candidates. Maximal degree in co-relation 53856. Up to 3279 conditions per place. [2024-01-31 16:07:43,934 INFO L140 encePairwiseOnDemand]: 59/77 looper letters, 348 selfloop transitions, 117 changer transitions 16/515 dead transitions. [2024-01-31 16:07:43,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 515 transitions, 13503 flow [2024-01-31 16:07:43,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:07:43,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:07:43,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 278 transitions. [2024-01-31 16:07:43,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4512987012987013 [2024-01-31 16:07:43,935 INFO L175 Difference]: Start difference. First operand has 347 places, 452 transitions, 11792 flow. Second operand 8 states and 278 transitions. [2024-01-31 16:07:43,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 515 transitions, 13503 flow [2024-01-31 16:07:44,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 515 transitions, 13244 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-01-31 16:07:44,588 INFO L231 Difference]: Finished difference. Result has 348 places, 437 transitions, 11493 flow [2024-01-31 16:07:44,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=11539, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11493, PETRI_PLACES=348, PETRI_TRANSITIONS=437} [2024-01-31 16:07:44,589 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 267 predicate places. [2024-01-31 16:07:44,589 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 437 transitions, 11493 flow [2024-01-31 16:07:44,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:44,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:44,589 INFO L208 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] [2024-01-31 16:07:44,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-01-31 16:07:44,590 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:07:44,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:44,590 INFO L85 PathProgramCache]: Analyzing trace with hash -401704704, now seen corresponding path program 10 times [2024-01-31 16:07:44,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:44,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911758999] [2024-01-31 16:07:44,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:44,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:44,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:44,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:44,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:44,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911758999] [2024-01-31 16:07:44,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911758999] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:44,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:44,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:07:44,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453694884] [2024-01-31 16:07:44,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:44,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:07:44,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:44,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:07:44,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:07:44,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:07:44,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 437 transitions, 11493 flow. Second operand has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:44,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:44,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:07:44,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:46,184 INFO L124 PetriNetUnfolderBase]: 2963/6093 cut-off events. [2024-01-31 16:07:46,184 INFO L125 PetriNetUnfolderBase]: For 220304/221177 co-relation queries the response was YES. [2024-01-31 16:07:46,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52474 conditions, 6093 events. 2963/6093 cut-off events. For 220304/221177 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 47118 event pairs, 618 based on Foata normal form. 50/6019 useless extension candidates. Maximal degree in co-relation 52362. Up to 2452 conditions per place. [2024-01-31 16:07:46,255 INFO L140 encePairwiseOnDemand]: 59/77 looper letters, 330 selfloop transitions, 122 changer transitions 12/496 dead transitions. [2024-01-31 16:07:46,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 496 transitions, 13041 flow [2024-01-31 16:07:46,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:07:46,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:07:46,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 271 transitions. [2024-01-31 16:07:46,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43993506493506496 [2024-01-31 16:07:46,256 INFO L175 Difference]: Start difference. First operand has 348 places, 437 transitions, 11493 flow. Second operand 8 states and 271 transitions. [2024-01-31 16:07:46,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 496 transitions, 13041 flow [2024-01-31 16:07:46,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 496 transitions, 12799 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-01-31 16:07:46,836 INFO L231 Difference]: Finished difference. Result has 349 places, 426 transitions, 11313 flow [2024-01-31 16:07:46,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=11251, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11313, PETRI_PLACES=349, PETRI_TRANSITIONS=426} [2024-01-31 16:07:46,837 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 268 predicate places. [2024-01-31 16:07:46,837 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 426 transitions, 11313 flow [2024-01-31 16:07:46,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:46,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:46,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:46,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-01-31 16:07:46,837 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:07:46,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:46,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1261233920, now seen corresponding path program 11 times [2024-01-31 16:07:46,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:46,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857007755] [2024-01-31 16:07:46,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:46,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:46,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:47,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:47,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:47,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857007755] [2024-01-31 16:07:47,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857007755] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:47,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:47,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:07:47,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253129618] [2024-01-31 16:07:47,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:47,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:07:47,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:47,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:07:47,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:07:47,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:07:47,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 426 transitions, 11313 flow. Second operand has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:47,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:47,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:07:47,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:48,505 INFO L124 PetriNetUnfolderBase]: 2880/5886 cut-off events. [2024-01-31 16:07:48,505 INFO L125 PetriNetUnfolderBase]: For 218693/219660 co-relation queries the response was YES. [2024-01-31 16:07:48,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51139 conditions, 5886 events. 2880/5886 cut-off events. For 218693/219660 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 45043 event pairs, 700 based on Foata normal form. 106/5886 useless extension candidates. Maximal degree in co-relation 51027. Up to 2483 conditions per place. [2024-01-31 16:07:48,575 INFO L140 encePairwiseOnDemand]: 59/77 looper letters, 289 selfloop transitions, 139 changer transitions 16/474 dead transitions. [2024-01-31 16:07:48,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 474 transitions, 12722 flow [2024-01-31 16:07:48,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:07:48,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:07:48,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 269 transitions. [2024-01-31 16:07:48,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4366883116883117 [2024-01-31 16:07:48,576 INFO L175 Difference]: Start difference. First operand has 349 places, 426 transitions, 11313 flow. Second operand 8 states and 269 transitions. [2024-01-31 16:07:48,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 474 transitions, 12722 flow [2024-01-31 16:07:49,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 474 transitions, 12268 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-01-31 16:07:49,139 INFO L231 Difference]: Finished difference. Result has 347 places, 412 transitions, 10911 flow [2024-01-31 16:07:49,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=10859, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10911, PETRI_PLACES=347, PETRI_TRANSITIONS=412} [2024-01-31 16:07:49,139 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 266 predicate places. [2024-01-31 16:07:49,139 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 412 transitions, 10911 flow [2024-01-31 16:07:49,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:49,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:49,140 INFO L208 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] [2024-01-31 16:07:49,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-01-31 16:07:49,140 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:07:49,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:49,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1260313220, now seen corresponding path program 12 times [2024-01-31 16:07:49,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:49,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753879437] [2024-01-31 16:07:49,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:49,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:49,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:49,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:49,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:49,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753879437] [2024-01-31 16:07:49,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753879437] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:49,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:49,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:07:49,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790158232] [2024-01-31 16:07:49,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:49,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:07:49,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:49,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:07:49,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:07:49,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:07:49,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 412 transitions, 10911 flow. Second operand has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:49,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:49,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:07:49,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:50,691 INFO L124 PetriNetUnfolderBase]: 2792/5744 cut-off events. [2024-01-31 16:07:50,691 INFO L125 PetriNetUnfolderBase]: For 205476/206427 co-relation queries the response was YES. [2024-01-31 16:07:50,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49479 conditions, 5744 events. 2792/5744 cut-off events. For 205476/206427 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 43938 event pairs, 703 based on Foata normal form. 98/5744 useless extension candidates. Maximal degree in co-relation 49369. Up to 2483 conditions per place. [2024-01-31 16:07:50,749 INFO L140 encePairwiseOnDemand]: 59/77 looper letters, 289 selfloop transitions, 120 changer transitions 25/462 dead transitions. [2024-01-31 16:07:50,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 462 transitions, 12335 flow [2024-01-31 16:07:50,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:07:50,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:07:50,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 278 transitions. [2024-01-31 16:07:50,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4512987012987013 [2024-01-31 16:07:50,750 INFO L175 Difference]: Start difference. First operand has 347 places, 412 transitions, 10911 flow. Second operand 8 states and 278 transitions. [2024-01-31 16:07:50,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 462 transitions, 12335 flow [2024-01-31 16:07:51,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 462 transitions, 11829 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-01-31 16:07:51,242 INFO L231 Difference]: Finished difference. Result has 343 places, 388 transitions, 10139 flow [2024-01-31 16:07:51,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=10413, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10139, PETRI_PLACES=343, PETRI_TRANSITIONS=388} [2024-01-31 16:07:51,242 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 262 predicate places. [2024-01-31 16:07:51,242 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 388 transitions, 10139 flow [2024-01-31 16:07:51,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:51,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:51,242 INFO L208 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] [2024-01-31 16:07:51,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-01-31 16:07:51,243 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:07:51,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:51,243 INFO L85 PathProgramCache]: Analyzing trace with hash -2102502156, now seen corresponding path program 13 times [2024-01-31 16:07:51,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:51,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563681202] [2024-01-31 16:07:51,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:51,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:51,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:51,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:51,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563681202] [2024-01-31 16:07:51,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563681202] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:51,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:51,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:07:51,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754891927] [2024-01-31 16:07:51,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:51,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:07:51,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:51,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:07:51,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:07:51,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:07:51,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 388 transitions, 10139 flow. Second operand has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:51,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:51,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:07:51,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:52,750 INFO L124 PetriNetUnfolderBase]: 2696/5658 cut-off events. [2024-01-31 16:07:52,750 INFO L125 PetriNetUnfolderBase]: For 181067/181902 co-relation queries the response was YES. [2024-01-31 16:07:52,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47331 conditions, 5658 events. 2696/5658 cut-off events. For 181067/181902 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 43720 event pairs, 737 based on Foata normal form. 50/5614 useless extension candidates. Maximal degree in co-relation 47224. Up to 2680 conditions per place. [2024-01-31 16:07:52,806 INFO L140 encePairwiseOnDemand]: 60/77 looper letters, 268 selfloop transitions, 117 changer transitions 31/444 dead transitions. [2024-01-31 16:07:52,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 444 transitions, 11644 flow [2024-01-31 16:07:52,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:07:52,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:07:52,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 272 transitions. [2024-01-31 16:07:52,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44155844155844154 [2024-01-31 16:07:52,807 INFO L175 Difference]: Start difference. First operand has 343 places, 388 transitions, 10139 flow. Second operand 8 states and 272 transitions. [2024-01-31 16:07:52,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 444 transitions, 11644 flow [2024-01-31 16:07:53,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 444 transitions, 11188 flow, removed 8 selfloop flow, removed 14 redundant places. [2024-01-31 16:07:53,258 INFO L231 Difference]: Finished difference. Result has 337 places, 365 transitions, 9352 flow [2024-01-31 16:07:53,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=9687, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9352, PETRI_PLACES=337, PETRI_TRANSITIONS=365} [2024-01-31 16:07:53,258 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 256 predicate places. [2024-01-31 16:07:53,258 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 365 transitions, 9352 flow [2024-01-31 16:07:53,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:53,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:53,258 INFO L208 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] [2024-01-31 16:07:53,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-01-31 16:07:53,259 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:07:53,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:53,259 INFO L85 PathProgramCache]: Analyzing trace with hash 332214468, now seen corresponding path program 14 times [2024-01-31 16:07:53,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:53,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986205093] [2024-01-31 16:07:53,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:53,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:53,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:53,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:53,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:53,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986205093] [2024-01-31 16:07:53,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986205093] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:53,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:53,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:07:53,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714782241] [2024-01-31 16:07:53,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:53,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:07:53,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:53,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:07:53,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:07:53,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-01-31 16:07:53,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 365 transitions, 9352 flow. Second operand has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:53,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:53,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-01-31 16:07:53,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:54,642 INFO L124 PetriNetUnfolderBase]: 2623/5459 cut-off events. [2024-01-31 16:07:54,642 INFO L125 PetriNetUnfolderBase]: For 162201/163000 co-relation queries the response was YES. [2024-01-31 16:07:54,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44833 conditions, 5459 events. 2623/5459 cut-off events. For 162201/163000 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 41441 event pairs, 473 based on Foata normal form. 36/5403 useless extension candidates. Maximal degree in co-relation 44728. Up to 2173 conditions per place. [2024-01-31 16:07:54,697 INFO L140 encePairwiseOnDemand]: 60/77 looper letters, 230 selfloop transitions, 119 changer transitions 26/402 dead transitions. [2024-01-31 16:07:54,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 402 transitions, 10469 flow [2024-01-31 16:07:54,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:07:54,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:07:54,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 265 transitions. [2024-01-31 16:07:54,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4301948051948052 [2024-01-31 16:07:54,698 INFO L175 Difference]: Start difference. First operand has 337 places, 365 transitions, 9352 flow. Second operand 8 states and 265 transitions. [2024-01-31 16:07:54,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 402 transitions, 10469 flow [2024-01-31 16:07:55,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 402 transitions, 9979 flow, removed 2 selfloop flow, removed 26 redundant places. [2024-01-31 16:07:55,072 INFO L231 Difference]: Finished difference. Result has 316 places, 338 transitions, 8599 flow [2024-01-31 16:07:55,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=8798, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8599, PETRI_PLACES=316, PETRI_TRANSITIONS=338} [2024-01-31 16:07:55,073 INFO L281 CegarLoopForPetriNet]: 81 programPoint places, 235 predicate places. [2024-01-31 16:07:55,073 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 338 transitions, 8599 flow [2024-01-31 16:07:55,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 23.22222222222222) internal successors, (209), 9 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:55,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:55,073 INFO L208 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, 1, 1] [2024-01-31 16:07:55,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-01-31 16:07:55,074 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 61 more)] === [2024-01-31 16:07:55,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:55,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1065832650, now seen corresponding path program 1 times [2024-01-31 16:07:55,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:55,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301821155] [2024-01-31 16:07:55,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:55,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:55,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:07:55,083 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-31 16:07:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:07:55,124 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-31 16:07:55,126 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-31 16:07:55,127 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (63 of 64 remaining) [2024-01-31 16:07:55,128 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (62 of 64 remaining) [2024-01-31 16:07:55,128 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (61 of 64 remaining) [2024-01-31 16:07:55,129 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (60 of 64 remaining) [2024-01-31 16:07:55,129 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (59 of 64 remaining) [2024-01-31 16:07:55,129 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT (58 of 64 remaining) [2024-01-31 16:07:55,129 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err5ASSERT_VIOLATIONWITNESS_INVARIANT (57 of 64 remaining) [2024-01-31 16:07:55,129 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err6ASSERT_VIOLATIONWITNESS_INVARIANT (56 of 64 remaining) [2024-01-31 16:07:55,129 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT (55 of 64 remaining) [2024-01-31 16:07:55,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err8ASSERT_VIOLATIONWITNESS_INVARIANT (54 of 64 remaining) [2024-01-31 16:07:55,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT (53 of 64 remaining) [2024-01-31 16:07:55,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err10ASSERT_VIOLATIONWITNESS_INVARIANT (52 of 64 remaining) [2024-01-31 16:07:55,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err11ASSERT_VIOLATIONWITNESS_INVARIANT (51 of 64 remaining) [2024-01-31 16:07:55,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err12ASSERT_VIOLATIONWITNESS_INVARIANT (50 of 64 remaining) [2024-01-31 16:07:55,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err13ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 64 remaining) [2024-01-31 16:07:55,130 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 64 remaining) [2024-01-31 16:07:55,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 64 remaining) [2024-01-31 16:07:55,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 64 remaining) [2024-01-31 16:07:55,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 64 remaining) [2024-01-31 16:07:55,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 64 remaining) [2024-01-31 16:07:55,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 64 remaining) [2024-01-31 16:07:55,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 64 remaining) [2024-01-31 16:07:55,131 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 64 remaining) [2024-01-31 16:07:55,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 64 remaining) [2024-01-31 16:07:55,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 64 remaining) [2024-01-31 16:07:55,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 64 remaining) [2024-01-31 16:07:55,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 64 remaining) [2024-01-31 16:07:55,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 64 remaining) [2024-01-31 16:07:55,132 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 64 remaining) [2024-01-31 16:07:55,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 64 remaining) [2024-01-31 16:07:55,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 64 remaining) [2024-01-31 16:07:55,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 64 remaining) [2024-01-31 16:07:55,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 64 remaining) [2024-01-31 16:07:55,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 64 remaining) [2024-01-31 16:07:55,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 64 remaining) [2024-01-31 16:07:55,133 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (28 of 64 remaining) [2024-01-31 16:07:55,134 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (27 of 64 remaining) [2024-01-31 16:07:55,134 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (26 of 64 remaining) [2024-01-31 16:07:55,134 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 64 remaining) [2024-01-31 16:07:55,134 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 64 remaining) [2024-01-31 16:07:55,134 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 64 remaining) [2024-01-31 16:07:55,134 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 64 remaining) [2024-01-31 16:07:55,134 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 64 remaining) [2024-01-31 16:07:55,135 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err5ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 64 remaining) [2024-01-31 16:07:55,135 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err6ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 64 remaining) [2024-01-31 16:07:55,135 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 64 remaining) [2024-01-31 16:07:55,135 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err8ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 64 remaining) [2024-01-31 16:07:55,135 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 64 remaining) [2024-01-31 16:07:55,135 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err10ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 64 remaining) [2024-01-31 16:07:55,135 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err11ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 64 remaining) [2024-01-31 16:07:55,135 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err12ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 64 remaining) [2024-01-31 16:07:55,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err13ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 64 remaining) [2024-01-31 16:07:55,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 64 remaining) [2024-01-31 16:07:55,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 64 remaining) [2024-01-31 16:07:55,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 64 remaining) [2024-01-31 16:07:55,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 64 remaining) [2024-01-31 16:07:55,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 64 remaining) [2024-01-31 16:07:55,136 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 64 remaining) [2024-01-31 16:07:55,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 64 remaining) [2024-01-31 16:07:55,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 64 remaining) [2024-01-31 16:07:55,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 64 remaining) [2024-01-31 16:07:55,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 64 remaining) [2024-01-31 16:07:55,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 64 remaining) [2024-01-31 16:07:55,137 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 64 remaining) [2024-01-31 16:07:55,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-01-31 16:07:55,138 INFO L445 BasicCegarLoop]: Path program histogram: [14, 13, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:55,143 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-31 16:07:55,143 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-31 16:07:55,190 INFO L503 ceAbstractionStarter]: Automizer considered 35 witness invariants [2024-01-31 16:07:55,190 INFO L504 ceAbstractionStarter]: WitnessConsidered=35 [2024-01-31 16:07:55,191 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 04:07:55 BasicIcfg [2024-01-31 16:07:55,191 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-31 16:07:55,191 INFO L158 Benchmark]: Toolchain (without parser) took 212452.98ms. Allocated memory was 151.0MB in the beginning and 3.5GB in the end (delta: 3.3GB). Free memory was 119.4MB in the beginning and 2.8GB in the end (delta: -2.7GB). Peak memory consumption was 642.4MB. Max. memory is 16.1GB. [2024-01-31 16:07:55,192 INFO L158 Benchmark]: Witness Parser took 0.20ms. Allocated memory is still 151.0MB. Free memory is still 101.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:07:55,192 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 151.0MB. Free memory was 109.8MB in the beginning and 109.6MB in the end (delta: 150.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:07:55,192 INFO L158 Benchmark]: CACSL2BoogieTranslator took 795.38ms. Allocated memory was 151.0MB in the beginning and 203.4MB in the end (delta: 52.4MB). Free memory was 119.2MB in the beginning and 112.5MB in the end (delta: 6.7MB). Peak memory consumption was 62.1MB. Max. memory is 16.1GB. [2024-01-31 16:07:55,192 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.04ms. Allocated memory is still 203.4MB. Free memory was 112.5MB in the beginning and 109.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-31 16:07:55,192 INFO L158 Benchmark]: Boogie Preprocessor took 47.45ms. Allocated memory is still 203.4MB. Free memory was 109.3MB in the beginning and 107.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 16:07:55,192 INFO L158 Benchmark]: RCFGBuilder took 762.24ms. Allocated memory is still 203.4MB. Free memory was 107.2MB in the beginning and 145.4MB in the end (delta: -38.1MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2024-01-31 16:07:55,193 INFO L158 Benchmark]: TraceAbstraction took 210781.30ms. Allocated memory was 203.4MB in the beginning and 3.5GB in the end (delta: 3.3GB). Free memory was 144.3MB in the beginning and 2.8GB in the end (delta: -2.6GB). Peak memory consumption was 617.4MB. Max. memory is 16.1GB. [2024-01-31 16:07:55,193 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 0.20ms. Allocated memory is still 151.0MB. Free memory is still 101.4MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.16ms. Allocated memory is still 151.0MB. Free memory was 109.8MB in the beginning and 109.6MB in the end (delta: 150.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 795.38ms. Allocated memory was 151.0MB in the beginning and 203.4MB in the end (delta: 52.4MB). Free memory was 119.2MB in the beginning and 112.5MB in the end (delta: 6.7MB). Peak memory consumption was 62.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.04ms. Allocated memory is still 203.4MB. Free memory was 112.5MB in the beginning and 109.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.45ms. Allocated memory is still 203.4MB. Free memory was 109.3MB in the beginning and 107.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 762.24ms. Allocated memory is still 203.4MB. Free memory was 107.2MB in the beginning and 145.4MB in the end (delta: -38.1MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. * TraceAbstraction took 210781.30ms. Allocated memory was 203.4MB in the beginning and 3.5GB in the end (delta: 3.3GB). Free memory was 144.3MB in the beginning and 2.8GB in the end (delta: -2.6GB). Peak memory consumption was 617.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 771]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L708] 0 int __unbuffered_cnt = 0; [L710] 0 int __unbuffered_p0_EAX = 0; [L711] 0 _Bool main$tmp_guard0; [L712] 0 _Bool main$tmp_guard1; [L714] 0 int x = 0; [L716] 0 int y = 0; [L760] 0 pthread_t t2573; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, t2573={5:0}, x=0, y=0] [L761] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_cnt],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]]]]] [L761] FCALL, FORK 0 pthread_create(&t2573, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t2573={5:0}, x=0, y=0] [L762] 0 pthread_t t2574; [L763] FCALL, FORK 0 pthread_create(&t2574, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t2573={5:0}, t2574={3:0}, x=0, y=0] [L719] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0] [L720] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L720] 1 y = 2 [L721] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=2] [L722] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=2] [L723] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=2] [L736] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=2] [L724] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=2] [L737] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L737] 2 x = 1 [L738] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=2] [L739] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=2] [L740] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L740] 2 y = 1 [L741] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L742] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L743] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L725] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L725] 1 __unbuffered_p0_EAX = x [L726] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L727] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L728] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L729] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L744] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L745] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L745] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L746] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[__unbuffered_cnt]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=1, __unbuffered_p0_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L730] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L730] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L731] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[__unbuffered_cnt]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=2, __unbuffered_p0_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L765] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L765] 0 main$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[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=2, __unbuffered_p0_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2573={5:0}, t2574={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[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=2, __unbuffered_p0_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2573={5:0}, t2574={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[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=2, __unbuffered_p0_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2573={5:0}, t2574={3:0}, x=1, y=1] - UnprovableResult [Line: 719]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 720]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 721]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 722]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 723]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 724]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 725]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 726]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 727]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 728]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 729]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 730]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 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: 761]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 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. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 129 locations, 64 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: 210.6s, OverallIterations: 124, TraceHistogramMax: 1, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.0s, AutomataDifference: 188.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10601 SdHoareTripleChecker+Valid, 20.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9574 mSDsluCounter, 2483 SdHoareTripleChecker+Invalid, 17.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2128 mSDsCounter, 1862 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 27414 IncrementalHoareTripleChecker+Invalid, 29276 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1862 mSolverCounterUnsat, 355 mSDtfsCounter, 27414 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 776 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 725 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 6.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18306occurred in iteration=104, InterpolantAutomatonStates: 860, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 20.3s InterpolantComputationTime, 2394 NumberOfCodeBlocks, 2394 NumberOfCodeBlocksAsserted, 124 NumberOfCheckSat, 2241 ConstructedInterpolants, 0 QuantifiedInterpolants, 53905 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 123 InterpolantComputations, 123 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-01-31 16:07:55,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE