./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe014_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe014_rmo.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de 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/safe014_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe014_rmo.oepc.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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 04:07:53,961 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 04:07:54,033 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 04:07:54,038 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 04:07:54,039 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 04:07:54,062 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 04:07:54,062 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 04:07:54,063 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 04:07:54,063 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 04:07:54,070 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 04:07:54,070 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 04:07:54,070 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 04:07:54,071 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 04:07:54,072 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 04:07:54,072 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 04:07:54,073 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 04:07:54,073 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 04:07:54,073 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 04:07:54,073 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 04:07:54,073 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 04:07:54,073 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 04:07:54,073 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 04:07:54,074 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 04:07:54,074 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 04:07:54,074 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 04:07:54,074 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 04:07:54,074 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 04:07:54,074 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 04:07:54,075 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 04:07:54,075 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 04:07:54,075 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 04:07:54,076 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 04:07:54,076 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 04:07:54,076 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 04:07:54,076 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 04:07:54,076 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 04:07:54,076 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 04:07:54,076 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 04:07:54,076 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 04:07:54,077 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 04:07:54,077 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 04:07:54,077 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 04:07:54,077 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 04:07:54,077 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 04:07:54,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 04:07:54,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 04:07:54,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 04:07:54,283 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 04:07:54,284 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 04:07:54,284 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_rmo.oepc.i [2024-06-28 04:07:55,327 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 04:07:55,521 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 04:07:55,521 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_rmo.oepc.i [2024-06-28 04:07:55,531 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/345389a53/4188185e5ccf4e2ca79a880415d0672d/FLAGcc8dc1989 [2024-06-28 04:07:55,541 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/345389a53/4188185e5ccf4e2ca79a880415d0672d [2024-06-28 04:07:55,543 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 04:07:55,544 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 04:07:55,544 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe014_rmo.oepc.yml/witness.yml [2024-06-28 04:07:55,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 04:07:55,717 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 04:07:55,718 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 04:07:55,718 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 04:07:55,723 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 04:07:55,724 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 04:07:55" (1/2) ... [2024-06-28 04:07:55,728 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b8e59bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:07:55, skipping insertion in model container [2024-06-28 04:07:55,729 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 04:07:55" (1/2) ... [2024-06-28 04:07:55,730 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2c6f3c13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 04:07:55, skipping insertion in model container [2024-06-28 04:07:55,730 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 04:07:55" (2/2) ... [2024-06-28 04:07:55,730 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b8e59bf and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:07:55, skipping insertion in model container [2024-06-28 04:07:55,731 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 04:07:55" (2/2) ... [2024-06-28 04:07:55,731 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 04:07:55,835 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 04:07:55,836 INFO L97 edCorrectnessWitness]: Location invariant before [L839-L839] ((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$w_buff1_used == (_Bool)0)) && (! multithreaded || y$w_buff1 == 0)) && (! multithreaded || y$w_buff0_used == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1) || __unbuffered_p0_EBX == 2))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && __unbuffered_p0_EAX$mem_tmp == 0) && __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p0_EAX$w_buff0 == 0) && __unbuffered_p0_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p0_EAX$w_buff1 == 0) && __unbuffered_p0_EAX$w_buff1_used == (_Bool)0) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && y$w_buff0 == 0) && y$w_buff0_used == (_Bool)0) && y$w_buff1 == 0) && y$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1)))) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && ((__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1) || __unbuffered_p0_EBX == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || y$w_buff0 == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0) [2024-06-28 04:07:55,837 INFO L97 edCorrectnessWitness]: Location invariant before [L837-L837] ((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$w_buff1_used == (_Bool)0)) && (! multithreaded || y$w_buff1 == 0)) && (! multithreaded || y$w_buff0_used == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1) || __unbuffered_p0_EBX == 2))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && __unbuffered_p0_EAX$mem_tmp == 0) && __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p0_EAX$w_buff0 == 0) && __unbuffered_p0_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p0_EAX$w_buff1 == 0) && __unbuffered_p0_EAX$w_buff1_used == (_Bool)0) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && y$w_buff0 == 0) && y$w_buff0_used == (_Bool)0) && y$w_buff1 == 0) && y$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1)))) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && ((__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1) || __unbuffered_p0_EBX == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || y$w_buff0 == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0) [2024-06-28 04:07:55,837 INFO L97 edCorrectnessWitness]: Location invariant before [L840-L840] ((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$w_buff1_used == (_Bool)0)) && (! multithreaded || y$w_buff1 == 0)) && (! multithreaded || y$w_buff0_used == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1) || __unbuffered_p0_EBX == 2))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && __unbuffered_p0_EAX$mem_tmp == 0) && __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p0_EAX$w_buff0 == 0) && __unbuffered_p0_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p0_EAX$w_buff1 == 0) && __unbuffered_p0_EAX$w_buff1_used == (_Bool)0) && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff0_thd3 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$r_buff1_thd3 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && y$w_buff0 == 0) && y$w_buff0_used == (_Bool)0) && y$w_buff1 == 0) && y$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1)))) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && ((__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1) || __unbuffered_p0_EBX == 2)) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2)) && ((x == 0 || x == 1) || x == 2)))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & y && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || y$w_buff0 == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0) [2024-06-28 04:07:55,837 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 04:07:55,837 INFO L106 edCorrectnessWitness]: ghost_update [L835-L835] multithreaded = 1; [2024-06-28 04:07:55,864 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 04:07:56,131 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 04:07:56,139 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 04:07:56,260 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 04:07:56,287 INFO L206 MainTranslator]: Completed translation [2024-06-28 04:07:56,288 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:07:56 WrapperNode [2024-06-28 04:07:56,288 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 04:07:56,289 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 04:07:56,289 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 04:07:56,289 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 04:07:56,294 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:07:56" (1/1) ... [2024-06-28 04:07:56,314 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:07:56" (1/1) ... [2024-06-28 04:07:56,348 INFO L138 Inliner]: procedures = 175, calls = 80, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 208 [2024-06-28 04:07:56,348 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 04:07:56,349 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 04:07:56,349 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 04:07:56,349 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 04:07:56,357 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:07:56" (1/1) ... [2024-06-28 04:07:56,357 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:07:56" (1/1) ... [2024-06-28 04:07:56,361 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:07:56" (1/1) ... [2024-06-28 04:07:56,382 INFO L175 MemorySlicer]: Split 39 memory accesses to 2 slices as follows [2, 37]. 95 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 5 writes are split as follows [0, 5]. [2024-06-28 04:07:56,382 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:07:56" (1/1) ... [2024-06-28 04:07:56,382 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:07:56" (1/1) ... [2024-06-28 04:07:56,391 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:07:56" (1/1) ... [2024-06-28 04:07:56,393 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:07:56" (1/1) ... [2024-06-28 04:07:56,395 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:07:56" (1/1) ... [2024-06-28 04:07:56,396 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:07:56" (1/1) ... [2024-06-28 04:07:56,399 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 04:07:56,400 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 04:07:56,403 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 04:07:56,403 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 04:07:56,404 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:07:56" (1/1) ... [2024-06-28 04:07:56,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 04:07:56,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 04:07:56,441 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) [2024-06-28 04:07:56,458 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 [2024-06-28 04:07:56,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 04:07:56,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 04:07:56,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 04:07:56,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 04:07:56,469 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 04:07:56,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 04:07:56,470 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 04:07:56,470 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 04:07:56,470 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 04:07:56,470 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 04:07:56,470 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 04:07:56,470 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 04:07:56,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 04:07:56,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 04:07:56,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 04:07:56,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 04:07:56,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 04:07:56,472 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 04:07:56,588 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 04:07:56,590 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 04:07:56,951 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 04:07:56,951 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 04:07:57,268 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 04:07:57,268 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 04:07:57,269 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 04:07:57 BoogieIcfgContainer [2024-06-28 04:07:57,269 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 04:07:57,272 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 04:07:57,272 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 04:07:57,275 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 04:07:57,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 04:07:55" (1/4) ... [2024-06-28 04:07:57,276 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@114914b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 04:07:57, skipping insertion in model container [2024-06-28 04:07:57,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 04:07:55" (2/4) ... [2024-06-28 04:07:57,276 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@114914b4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 04:07:57, skipping insertion in model container [2024-06-28 04:07:57,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 04:07:56" (3/4) ... [2024-06-28 04:07:57,277 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@114914b4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 04:07:57, skipping insertion in model container [2024-06-28 04:07:57,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 04:07:57" (4/4) ... [2024-06-28 04:07:57,278 INFO L112 eAbstractionObserver]: Analyzing ICFG safe014_rmo.oepc.i [2024-06-28 04:07:57,292 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 04:07:57,293 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 04:07:57,293 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 04:07:57,355 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 04:07:57,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 42 transitions, 96 flow [2024-06-28 04:07:57,418 INFO L124 PetriNetUnfolderBase]: 0/39 cut-off events. [2024-06-28 04:07:57,418 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 04:07:57,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 39 events. 0/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 59 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 04:07:57,420 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 42 transitions, 96 flow [2024-06-28 04:07:57,423 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 33 transitions, 75 flow [2024-06-28 04:07:57,454 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 04:07:57,462 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;@84fa358, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 04:07:57,462 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 04:07:57,468 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 04:07:57,468 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 04:07:57,468 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 04:07:57,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:07:57,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 04:07:57,469 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:07:57,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:07:57,475 INFO L85 PathProgramCache]: Analyzing trace with hash 638191576, now seen corresponding path program 1 times [2024-06-28 04:07:57,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:07:57,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767514180] [2024-06-28 04:07:57,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:07:57,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:07:57,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:07:59,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:07:59,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:07:59,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767514180] [2024-06-28 04:07:59,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767514180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:07:59,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:07:59,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 04:07:59,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156417909] [2024-06-28 04:07:59,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:07:59,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 04:07:59,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:07:59,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 04:07:59,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 04:07:59,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-28 04:07:59,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:59,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:07:59,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-28 04:07:59,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:07:59,662 INFO L124 PetriNetUnfolderBase]: 770/1239 cut-off events. [2024-06-28 04:07:59,662 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-06-28 04:07:59,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2482 conditions, 1239 events. 770/1239 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5903 event pairs, 479 based on Foata normal form. 1/1209 useless extension candidates. Maximal degree in co-relation 2470. Up to 1178 conditions per place. [2024-06-28 04:07:59,675 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 33 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-06-28 04:07:59,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 45 transitions, 179 flow [2024-06-28 04:07:59,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 04:07:59,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 04:07:59,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-06-28 04:07:59,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5793650793650794 [2024-06-28 04:07:59,687 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 75 flow. Second operand 3 states and 73 transitions. [2024-06-28 04:07:59,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 45 transitions, 179 flow [2024-06-28 04:07:59,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 45 transitions, 174 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-28 04:07:59,693 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 102 flow [2024-06-28 04:07:59,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2024-06-28 04:07:59,698 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 0 predicate places. [2024-06-28 04:07:59,699 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 102 flow [2024-06-28 04:07:59,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:07:59,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:07:59,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:07:59,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 04:07:59,700 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:07:59,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:07:59,701 INFO L85 PathProgramCache]: Analyzing trace with hash -877827137, now seen corresponding path program 1 times [2024-06-28 04:07:59,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:07:59,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648540444] [2024-06-28 04:07:59,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:07:59,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:07:59,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:01,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:08:01,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:01,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648540444] [2024-06-28 04:08:01,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648540444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:01,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:01,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 04:08:01,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520620582] [2024-06-28 04:08:01,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:01,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 04:08:01,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:01,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 04:08:01,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 04:08:01,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-28 04:08:01,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:01,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:01,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-28 04:08:01,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:02,315 INFO L124 PetriNetUnfolderBase]: 764/1231 cut-off events. [2024-06-28 04:08:02,316 INFO L125 PetriNetUnfolderBase]: For 253/261 co-relation queries the response was YES. [2024-06-28 04:08:02,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2837 conditions, 1231 events. 764/1231 cut-off events. For 253/261 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5863 event pairs, 369 based on Foata normal form. 6/1234 useless extension candidates. Maximal degree in co-relation 2825. Up to 1150 conditions per place. [2024-06-28 04:08:02,322 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 42 selfloop transitions, 7 changer transitions 0/57 dead transitions. [2024-06-28 04:08:02,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 57 transitions, 254 flow [2024-06-28 04:08:02,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 04:08:02,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 04:08:02,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-06-28 04:08:02,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-06-28 04:08:02,324 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 102 flow. Second operand 4 states and 96 transitions. [2024-06-28 04:08:02,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 57 transitions, 254 flow [2024-06-28 04:08:02,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 57 transitions, 250 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 04:08:02,325 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 138 flow [2024-06-28 04:08:02,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2024-06-28 04:08:02,326 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 3 predicate places. [2024-06-28 04:08:02,326 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 138 flow [2024-06-28 04:08:02,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:02,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:02,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:02,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 04:08:02,327 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:08:02,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:02,328 INFO L85 PathProgramCache]: Analyzing trace with hash 709106577, now seen corresponding path program 1 times [2024-06-28 04:08:02,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:02,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222757250] [2024-06-28 04:08:02,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:02,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:02,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:04,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:08:04,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:04,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222757250] [2024-06-28 04:08:04,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222757250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:04,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:04,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 04:08:04,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546317464] [2024-06-28 04:08:04,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:04,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 04:08:04,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:04,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 04:08:04,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 04:08:04,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 04:08:04,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 138 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:04,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:04,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 04:08:04,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:05,667 INFO L124 PetriNetUnfolderBase]: 969/1526 cut-off events. [2024-06-28 04:08:05,667 INFO L125 PetriNetUnfolderBase]: For 847/863 co-relation queries the response was YES. [2024-06-28 04:08:05,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3915 conditions, 1526 events. 969/1526 cut-off events. For 847/863 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7181 event pairs, 305 based on Foata normal form. 12/1532 useless extension candidates. Maximal degree in co-relation 3901. Up to 1394 conditions per place. [2024-06-28 04:08:05,676 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 57 selfloop transitions, 12 changer transitions 0/76 dead transitions. [2024-06-28 04:08:05,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 76 transitions, 378 flow [2024-06-28 04:08:05,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:08:05,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:08:05,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-06-28 04:08:05,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-06-28 04:08:05,681 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 138 flow. Second operand 6 states and 132 transitions. [2024-06-28 04:08:05,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 76 transitions, 378 flow [2024-06-28 04:08:05,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 76 transitions, 358 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 04:08:05,684 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 181 flow [2024-06-28 04:08:05,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=181, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2024-06-28 04:08:05,686 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 7 predicate places. [2024-06-28 04:08:05,686 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 181 flow [2024-06-28 04:08:05,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:05,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:05,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:05,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 04:08:05,687 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:08:05,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:05,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1743286501, now seen corresponding path program 1 times [2024-06-28 04:08:05,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:05,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574327686] [2024-06-28 04:08:05,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:05,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:05,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:07,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:08:07,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:07,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574327686] [2024-06-28 04:08:07,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574327686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:07,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:07,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 04:08:07,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366328277] [2024-06-28 04:08:07,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:07,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 04:08:07,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:07,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 04:08:07,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 04:08:07,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:08:07,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 181 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:07,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:07,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:08:07,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:07,865 INFO L124 PetriNetUnfolderBase]: 1120/1739 cut-off events. [2024-06-28 04:08:07,866 INFO L125 PetriNetUnfolderBase]: For 1717/1717 co-relation queries the response was YES. [2024-06-28 04:08:07,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4888 conditions, 1739 events. 1120/1739 cut-off events. For 1717/1717 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8105 event pairs, 441 based on Foata normal form. 2/1738 useless extension candidates. Maximal degree in co-relation 4871. Up to 1665 conditions per place. [2024-06-28 04:08:07,874 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 52 selfloop transitions, 10 changer transitions 0/67 dead transitions. [2024-06-28 04:08:07,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 67 transitions, 386 flow [2024-06-28 04:08:07,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:08:07,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:08:07,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 92 transitions. [2024-06-28 04:08:07,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4380952380952381 [2024-06-28 04:08:07,876 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 181 flow. Second operand 5 states and 92 transitions. [2024-06-28 04:08:07,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 67 transitions, 386 flow [2024-06-28 04:08:07,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 67 transitions, 355 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 04:08:07,882 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 228 flow [2024-06-28 04:08:07,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=228, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2024-06-28 04:08:07,883 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2024-06-28 04:08:07,883 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 228 flow [2024-06-28 04:08:07,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:07,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:07,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:07,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 04:08:07,885 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:08:07,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:07,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1751104562, now seen corresponding path program 1 times [2024-06-28 04:08:07,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:07,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788501217] [2024-06-28 04:08:07,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:07,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:07,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:09,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:08:09,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:09,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788501217] [2024-06-28 04:08:09,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788501217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:09,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:09,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 04:08:09,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410942538] [2024-06-28 04:08:09,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:09,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 04:08:09,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:09,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 04:08:09,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 04:08:09,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:08:09,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 228 flow. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:09,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:09,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:08:09,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:09,869 INFO L124 PetriNetUnfolderBase]: 1115/1737 cut-off events. [2024-06-28 04:08:09,869 INFO L125 PetriNetUnfolderBase]: For 2509/2512 co-relation queries the response was YES. [2024-06-28 04:08:09,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5388 conditions, 1737 events. 1115/1737 cut-off events. For 2509/2512 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8139 event pairs, 457 based on Foata normal form. 4/1739 useless extension candidates. Maximal degree in co-relation 5368. Up to 1660 conditions per place. [2024-06-28 04:08:09,878 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 51 selfloop transitions, 10 changer transitions 0/66 dead transitions. [2024-06-28 04:08:09,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 66 transitions, 389 flow [2024-06-28 04:08:09,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:08:09,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:08:09,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 90 transitions. [2024-06-28 04:08:09,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 04:08:09,882 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 228 flow. Second operand 5 states and 90 transitions. [2024-06-28 04:08:09,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 66 transitions, 389 flow [2024-06-28 04:08:09,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 66 transitions, 385 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-28 04:08:09,891 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 257 flow [2024-06-28 04:08:09,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=257, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-06-28 04:08:09,894 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 14 predicate places. [2024-06-28 04:08:09,894 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 257 flow [2024-06-28 04:08:09,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:09,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:09,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:09,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 04:08:09,894 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:08:09,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:09,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1542508026, now seen corresponding path program 1 times [2024-06-28 04:08:09,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:09,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168921893] [2024-06-28 04:08:09,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:09,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:09,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:12,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:08:12,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:12,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168921893] [2024-06-28 04:08:12,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168921893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:12,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:12,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:08:12,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954496129] [2024-06-28 04:08:12,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:12,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:08:12,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:12,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:08:12,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:08:12,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:08:12,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 257 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:12,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:12,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:08:12,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:13,395 INFO L124 PetriNetUnfolderBase]: 1128/1754 cut-off events. [2024-06-28 04:08:13,396 INFO L125 PetriNetUnfolderBase]: For 3324/3324 co-relation queries the response was YES. [2024-06-28 04:08:13,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5647 conditions, 1754 events. 1128/1754 cut-off events. For 3324/3324 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8198 event pairs, 421 based on Foata normal form. 2/1752 useless extension candidates. Maximal degree in co-relation 5624. Up to 1609 conditions per place. [2024-06-28 04:08:13,405 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 64 selfloop transitions, 17 changer transitions 0/86 dead transitions. [2024-06-28 04:08:13,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 86 transitions, 537 flow [2024-06-28 04:08:13,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:08:13,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:08:13,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-06-28 04:08:13,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45634920634920634 [2024-06-28 04:08:13,407 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 257 flow. Second operand 6 states and 115 transitions. [2024-06-28 04:08:13,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 86 transitions, 537 flow [2024-06-28 04:08:13,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 86 transitions, 525 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 04:08:13,410 INFO L231 Difference]: Finished difference. Result has 62 places, 60 transitions, 342 flow [2024-06-28 04:08:13,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=342, PETRI_PLACES=62, PETRI_TRANSITIONS=60} [2024-06-28 04:08:13,413 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 19 predicate places. [2024-06-28 04:08:13,414 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 60 transitions, 342 flow [2024-06-28 04:08:13,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:13,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:13,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:13,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 04:08:13,414 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:08:13,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:13,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1548971526, now seen corresponding path program 2 times [2024-06-28 04:08:13,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:13,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981690564] [2024-06-28 04:08:13,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:13,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:13,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:15,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:08:15,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:15,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981690564] [2024-06-28 04:08:15,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981690564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:15,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:15,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:08:15,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443759328] [2024-06-28 04:08:15,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:15,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:08:15,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:15,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:08:15,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:08:15,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:08:15,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 60 transitions, 342 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:15,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:15,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:08:15,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:16,487 INFO L124 PetriNetUnfolderBase]: 1123/1742 cut-off events. [2024-06-28 04:08:16,487 INFO L125 PetriNetUnfolderBase]: For 4967/4974 co-relation queries the response was YES. [2024-06-28 04:08:16,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6232 conditions, 1742 events. 1123/1742 cut-off events. For 4967/4974 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8082 event pairs, 431 based on Foata normal form. 8/1744 useless extension candidates. Maximal degree in co-relation 6206. Up to 1606 conditions per place. [2024-06-28 04:08:16,498 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 59 selfloop transitions, 20 changer transitions 0/84 dead transitions. [2024-06-28 04:08:16,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 84 transitions, 594 flow [2024-06-28 04:08:16,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:08:16,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:08:16,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2024-06-28 04:08:16,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2024-06-28 04:08:16,500 INFO L175 Difference]: Start difference. First operand has 62 places, 60 transitions, 342 flow. Second operand 6 states and 110 transitions. [2024-06-28 04:08:16,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 84 transitions, 594 flow [2024-06-28 04:08:16,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 84 transitions, 572 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-28 04:08:16,505 INFO L231 Difference]: Finished difference. Result has 66 places, 63 transitions, 390 flow [2024-06-28 04:08:16,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=390, PETRI_PLACES=66, PETRI_TRANSITIONS=63} [2024-06-28 04:08:16,506 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 23 predicate places. [2024-06-28 04:08:16,506 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 63 transitions, 390 flow [2024-06-28 04:08:16,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:16,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:16,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:16,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 04:08:16,507 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:08:16,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:16,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1830047723, now seen corresponding path program 1 times [2024-06-28 04:08:16,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:16,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757323765] [2024-06-28 04:08:16,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:16,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:16,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:18,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:08:18,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:18,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757323765] [2024-06-28 04:08:18,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757323765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:18,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:18,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:08:18,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204119346] [2024-06-28 04:08:18,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:18,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:08:18,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:18,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:08:18,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:08:18,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:08:18,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 63 transitions, 390 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:18,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:18,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:08:18,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:19,483 INFO L124 PetriNetUnfolderBase]: 1227/1927 cut-off events. [2024-06-28 04:08:19,483 INFO L125 PetriNetUnfolderBase]: For 6305/6311 co-relation queries the response was YES. [2024-06-28 04:08:19,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7192 conditions, 1927 events. 1227/1927 cut-off events. For 6305/6311 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 9315 event pairs, 378 based on Foata normal form. 9/1935 useless extension candidates. Maximal degree in co-relation 7164. Up to 1725 conditions per place. [2024-06-28 04:08:19,494 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 92 selfloop transitions, 34 changer transitions 0/131 dead transitions. [2024-06-28 04:08:19,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 131 transitions, 928 flow [2024-06-28 04:08:19,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:08:19,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:08:19,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-28 04:08:19,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-28 04:08:19,498 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 390 flow. Second operand 9 states and 171 transitions. [2024-06-28 04:08:19,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 131 transitions, 928 flow [2024-06-28 04:08:19,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 131 transitions, 895 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-28 04:08:19,506 INFO L231 Difference]: Finished difference. Result has 75 places, 84 transitions, 603 flow [2024-06-28 04:08:19,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=603, PETRI_PLACES=75, PETRI_TRANSITIONS=84} [2024-06-28 04:08:19,507 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 32 predicate places. [2024-06-28 04:08:19,508 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 84 transitions, 603 flow [2024-06-28 04:08:19,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:19,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:19,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:19,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 04:08:19,508 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:08:19,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:19,509 INFO L85 PathProgramCache]: Analyzing trace with hash -672880777, now seen corresponding path program 2 times [2024-06-28 04:08:19,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:19,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857310036] [2024-06-28 04:08:19,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:19,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:19,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:22,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:08:22,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:22,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857310036] [2024-06-28 04:08:22,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857310036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:22,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:22,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:08:22,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841181398] [2024-06-28 04:08:22,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:22,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:08:22,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:22,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:08:22,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:08:22,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:08:22,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 84 transitions, 603 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:22,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:22,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:08:22,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:23,248 INFO L124 PetriNetUnfolderBase]: 1271/2002 cut-off events. [2024-06-28 04:08:23,248 INFO L125 PetriNetUnfolderBase]: For 9301/9309 co-relation queries the response was YES. [2024-06-28 04:08:23,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8372 conditions, 2002 events. 1271/2002 cut-off events. For 9301/9309 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 9712 event pairs, 348 based on Foata normal form. 11/2012 useless extension candidates. Maximal degree in co-relation 8339. Up to 1749 conditions per place. [2024-06-28 04:08:23,267 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 86 selfloop transitions, 42 changer transitions 0/133 dead transitions. [2024-06-28 04:08:23,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 133 transitions, 1091 flow [2024-06-28 04:08:23,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:08:23,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:08:23,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-28 04:08:23,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-28 04:08:23,269 INFO L175 Difference]: Start difference. First operand has 75 places, 84 transitions, 603 flow. Second operand 8 states and 152 transitions. [2024-06-28 04:08:23,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 133 transitions, 1091 flow [2024-06-28 04:08:23,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 133 transitions, 1057 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-28 04:08:23,281 INFO L231 Difference]: Finished difference. Result has 82 places, 92 transitions, 760 flow [2024-06-28 04:08:23,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=760, PETRI_PLACES=82, PETRI_TRANSITIONS=92} [2024-06-28 04:08:23,282 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 39 predicate places. [2024-06-28 04:08:23,282 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 92 transitions, 760 flow [2024-06-28 04:08:23,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:23,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:23,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:23,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 04:08:23,283 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:08:23,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:23,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1065628255, now seen corresponding path program 3 times [2024-06-28 04:08:23,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:23,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324566370] [2024-06-28 04:08:23,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:23,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:25,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:08:25,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:25,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324566370] [2024-06-28 04:08:25,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324566370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:25,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:25,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:08:25,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177886348] [2024-06-28 04:08:25,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:25,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:08:25,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:25,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:08:25,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:08:25,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:08:25,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 92 transitions, 760 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:25,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:25,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:08:25,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:27,054 INFO L124 PetriNetUnfolderBase]: 1284/2019 cut-off events. [2024-06-28 04:08:27,054 INFO L125 PetriNetUnfolderBase]: For 12681/12683 co-relation queries the response was YES. [2024-06-28 04:08:27,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9360 conditions, 2019 events. 1284/2019 cut-off events. For 12681/12683 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 9733 event pairs, 390 based on Foata normal form. 2/2016 useless extension candidates. Maximal degree in co-relation 9324. Up to 1680 conditions per place. [2024-06-28 04:08:27,066 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 96 selfloop transitions, 41 changer transitions 0/142 dead transitions. [2024-06-28 04:08:27,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 142 transitions, 1369 flow [2024-06-28 04:08:27,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:08:27,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:08:27,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-28 04:08:27,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-28 04:08:27,069 INFO L175 Difference]: Start difference. First operand has 82 places, 92 transitions, 760 flow. Second operand 7 states and 133 transitions. [2024-06-28 04:08:27,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 142 transitions, 1369 flow [2024-06-28 04:08:27,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 142 transitions, 1282 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-28 04:08:27,082 INFO L231 Difference]: Finished difference. Result has 87 places, 112 transitions, 1047 flow [2024-06-28 04:08:27,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1047, PETRI_PLACES=87, PETRI_TRANSITIONS=112} [2024-06-28 04:08:27,083 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 44 predicate places. [2024-06-28 04:08:27,083 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 112 transitions, 1047 flow [2024-06-28 04:08:27,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:27,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:27,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:27,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 04:08:27,084 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:08:27,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:27,084 INFO L85 PathProgramCache]: Analyzing trace with hash -672760621, now seen corresponding path program 1 times [2024-06-28 04:08:27,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:27,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963321525] [2024-06-28 04:08:27,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:27,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:27,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:29,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:08:29,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:29,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963321525] [2024-06-28 04:08:29,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963321525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:29,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:29,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:08:29,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090345013] [2024-06-28 04:08:29,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:29,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:08:29,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:29,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:08:29,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:08:29,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:08:29,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 112 transitions, 1047 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:29,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:29,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:08:29,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:30,217 INFO L124 PetriNetUnfolderBase]: 1297/2041 cut-off events. [2024-06-28 04:08:30,217 INFO L125 PetriNetUnfolderBase]: For 15284/15292 co-relation queries the response was YES. [2024-06-28 04:08:30,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10138 conditions, 2041 events. 1297/2041 cut-off events. For 15284/15292 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 9816 event pairs, 386 based on Foata normal form. 10/2047 useless extension candidates. Maximal degree in co-relation 10098. Up to 1842 conditions per place. [2024-06-28 04:08:30,231 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 113 selfloop transitions, 23 changer transitions 0/141 dead transitions. [2024-06-28 04:08:30,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 141 transitions, 1463 flow [2024-06-28 04:08:30,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:08:30,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:08:30,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-06-28 04:08:30,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45634920634920634 [2024-06-28 04:08:30,233 INFO L175 Difference]: Start difference. First operand has 87 places, 112 transitions, 1047 flow. Second operand 6 states and 115 transitions. [2024-06-28 04:08:30,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 141 transitions, 1463 flow [2024-06-28 04:08:30,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 141 transitions, 1415 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-06-28 04:08:30,250 INFO L231 Difference]: Finished difference. Result has 91 places, 115 transitions, 1080 flow [2024-06-28 04:08:30,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=999, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1080, PETRI_PLACES=91, PETRI_TRANSITIONS=115} [2024-06-28 04:08:30,251 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 48 predicate places. [2024-06-28 04:08:30,251 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 115 transitions, 1080 flow [2024-06-28 04:08:30,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:30,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:30,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:30,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 04:08:30,252 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:08:30,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:30,252 INFO L85 PathProgramCache]: Analyzing trace with hash 808333349, now seen corresponding path program 4 times [2024-06-28 04:08:30,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:30,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945828868] [2024-06-28 04:08:30,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:30,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:30,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:32,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:08:32,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:32,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945828868] [2024-06-28 04:08:32,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945828868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:32,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:32,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:08:32,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592369267] [2024-06-28 04:08:32,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:32,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:08:32,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:32,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:08:32,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:08:32,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:08:32,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 115 transitions, 1080 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:32,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:32,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:08:32,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:33,951 INFO L124 PetriNetUnfolderBase]: 1292/2020 cut-off events. [2024-06-28 04:08:33,951 INFO L125 PetriNetUnfolderBase]: For 16456/16464 co-relation queries the response was YES. [2024-06-28 04:08:33,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10124 conditions, 2020 events. 1292/2020 cut-off events. For 16456/16464 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 9621 event pairs, 420 based on Foata normal form. 4/2009 useless extension candidates. Maximal degree in co-relation 10082. Up to 1685 conditions per place. [2024-06-28 04:08:33,963 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 92 selfloop transitions, 47 changer transitions 0/144 dead transitions. [2024-06-28 04:08:33,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 144 transitions, 1510 flow [2024-06-28 04:08:33,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:08:33,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:08:33,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-28 04:08:33,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43537414965986393 [2024-06-28 04:08:33,965 INFO L175 Difference]: Start difference. First operand has 91 places, 115 transitions, 1080 flow. Second operand 7 states and 128 transitions. [2024-06-28 04:08:33,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 144 transitions, 1510 flow [2024-06-28 04:08:33,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 144 transitions, 1481 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 04:08:33,979 INFO L231 Difference]: Finished difference. Result has 95 places, 118 transitions, 1191 flow [2024-06-28 04:08:33,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1051, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1191, PETRI_PLACES=95, PETRI_TRANSITIONS=118} [2024-06-28 04:08:33,980 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 52 predicate places. [2024-06-28 04:08:33,980 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 118 transitions, 1191 flow [2024-06-28 04:08:33,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:33,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:33,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:33,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 04:08:33,981 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:08:33,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:33,981 INFO L85 PathProgramCache]: Analyzing trace with hash 815720525, now seen corresponding path program 2 times [2024-06-28 04:08:33,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:33,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431524205] [2024-06-28 04:08:33,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:33,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:33,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:35,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:08:35,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:35,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431524205] [2024-06-28 04:08:35,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431524205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:35,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:35,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:08:35,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293603361] [2024-06-28 04:08:35,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:35,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:08:35,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:35,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:08:35,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:08:35,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:08:35,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 118 transitions, 1191 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:35,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:35,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:08:35,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:36,820 INFO L124 PetriNetUnfolderBase]: 1287/2035 cut-off events. [2024-06-28 04:08:36,820 INFO L125 PetriNetUnfolderBase]: For 19175/19216 co-relation queries the response was YES. [2024-06-28 04:08:36,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10512 conditions, 2035 events. 1287/2035 cut-off events. For 19175/19216 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 9914 event pairs, 398 based on Foata normal form. 34/2063 useless extension candidates. Maximal degree in co-relation 10469. Up to 1830 conditions per place. [2024-06-28 04:08:36,832 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 112 selfloop transitions, 23 changer transitions 0/140 dead transitions. [2024-06-28 04:08:36,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 140 transitions, 1539 flow [2024-06-28 04:08:36,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:08:36,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:08:36,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-06-28 04:08:36,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 04:08:36,834 INFO L175 Difference]: Start difference. First operand has 95 places, 118 transitions, 1191 flow. Second operand 6 states and 108 transitions. [2024-06-28 04:08:36,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 140 transitions, 1539 flow [2024-06-28 04:08:36,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 140 transitions, 1457 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 04:08:36,851 INFO L231 Difference]: Finished difference. Result has 97 places, 119 transitions, 1175 flow [2024-06-28 04:08:36,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1110, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1175, PETRI_PLACES=97, PETRI_TRANSITIONS=119} [2024-06-28 04:08:36,852 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 54 predicate places. [2024-06-28 04:08:36,852 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 119 transitions, 1175 flow [2024-06-28 04:08:36,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:36,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:36,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:36,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 04:08:36,853 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:08:36,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:36,853 INFO L85 PathProgramCache]: Analyzing trace with hash 773724143, now seen corresponding path program 1 times [2024-06-28 04:08:36,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:36,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734862160] [2024-06-28 04:08:36,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:36,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:36,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:38,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:08:38,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:38,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734862160] [2024-06-28 04:08:38,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734862160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:38,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:38,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:08:38,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488020411] [2024-06-28 04:08:38,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:38,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:08:38,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:38,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:08:38,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:08:38,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:08:38,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 119 transitions, 1175 flow. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:38,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:38,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:08:38,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:39,278 INFO L124 PetriNetUnfolderBase]: 1279/2014 cut-off events. [2024-06-28 04:08:39,278 INFO L125 PetriNetUnfolderBase]: For 20520/20528 co-relation queries the response was YES. [2024-06-28 04:08:39,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10426 conditions, 2014 events. 1279/2014 cut-off events. For 20520/20528 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 9716 event pairs, 380 based on Foata normal form. 8/2020 useless extension candidates. Maximal degree in co-relation 10381. Up to 1878 conditions per place. [2024-06-28 04:08:39,290 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 124 selfloop transitions, 12 changer transitions 0/141 dead transitions. [2024-06-28 04:08:39,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 141 transitions, 1523 flow [2024-06-28 04:08:39,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:08:39,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:08:39,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-28 04:08:39,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42063492063492064 [2024-06-28 04:08:39,293 INFO L175 Difference]: Start difference. First operand has 97 places, 119 transitions, 1175 flow. Second operand 6 states and 106 transitions. [2024-06-28 04:08:39,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 141 transitions, 1523 flow [2024-06-28 04:08:39,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 141 transitions, 1492 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 04:08:39,309 INFO L231 Difference]: Finished difference. Result has 100 places, 121 transitions, 1199 flow [2024-06-28 04:08:39,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1144, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1199, PETRI_PLACES=100, PETRI_TRANSITIONS=121} [2024-06-28 04:08:39,310 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 57 predicate places. [2024-06-28 04:08:39,310 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 121 transitions, 1199 flow [2024-06-28 04:08:39,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:39,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:39,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:39,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 04:08:39,310 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:08:39,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:39,311 INFO L85 PathProgramCache]: Analyzing trace with hash 615533408, now seen corresponding path program 1 times [2024-06-28 04:08:39,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:39,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181498876] [2024-06-28 04:08:39,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:39,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:39,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:42,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:08:42,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:42,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181498876] [2024-06-28 04:08:42,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181498876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:42,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:42,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:08:42,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475696970] [2024-06-28 04:08:42,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:42,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:08:42,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:42,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:08:42,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:08:42,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:08:42,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 121 transitions, 1199 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:42,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:42,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:08:42,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:43,128 INFO L124 PetriNetUnfolderBase]: 1263/1994 cut-off events. [2024-06-28 04:08:43,129 INFO L125 PetriNetUnfolderBase]: For 22070/22078 co-relation queries the response was YES. [2024-06-28 04:08:43,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10443 conditions, 1994 events. 1263/1994 cut-off events. For 22070/22078 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 9638 event pairs, 371 based on Foata normal form. 14/2007 useless extension candidates. Maximal degree in co-relation 10396. Up to 1745 conditions per place. [2024-06-28 04:08:43,140 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 98 selfloop transitions, 56 changer transitions 0/159 dead transitions. [2024-06-28 04:08:43,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 159 transitions, 1631 flow [2024-06-28 04:08:43,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:08:43,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:08:43,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 04:08:43,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-28 04:08:43,141 INFO L175 Difference]: Start difference. First operand has 100 places, 121 transitions, 1199 flow. Second operand 8 states and 150 transitions. [2024-06-28 04:08:43,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 159 transitions, 1631 flow [2024-06-28 04:08:43,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 159 transitions, 1572 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-28 04:08:43,159 INFO L231 Difference]: Finished difference. Result has 104 places, 121 transitions, 1272 flow [2024-06-28 04:08:43,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1140, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1272, PETRI_PLACES=104, PETRI_TRANSITIONS=121} [2024-06-28 04:08:43,159 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 61 predicate places. [2024-06-28 04:08:43,160 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 121 transitions, 1272 flow [2024-06-28 04:08:43,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:43,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:43,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:43,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 04:08:43,160 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:08:43,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:43,161 INFO L85 PathProgramCache]: Analyzing trace with hash 619258058, now seen corresponding path program 2 times [2024-06-28 04:08:43,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:43,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380637119] [2024-06-28 04:08:43,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:43,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:43,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:45,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:08:45,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:45,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380637119] [2024-06-28 04:08:45,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380637119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:45,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:45,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:08:45,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344112975] [2024-06-28 04:08:45,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:45,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:08:45,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:45,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:08:45,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:08:45,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:08:45,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 121 transitions, 1272 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:45,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:45,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:08:45,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:46,913 INFO L124 PetriNetUnfolderBase]: 1294/2048 cut-off events. [2024-06-28 04:08:46,913 INFO L125 PetriNetUnfolderBase]: For 25002/25004 co-relation queries the response was YES. [2024-06-28 04:08:46,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10985 conditions, 2048 events. 1294/2048 cut-off events. For 25002/25004 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 9944 event pairs, 388 based on Foata normal form. 2/2046 useless extension candidates. Maximal degree in co-relation 10937. Up to 1685 conditions per place. [2024-06-28 04:08:46,925 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 104 selfloop transitions, 49 changer transitions 0/158 dead transitions. [2024-06-28 04:08:46,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 158 transitions, 1850 flow [2024-06-28 04:08:46,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:08:46,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:08:46,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-28 04:08:46,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45918367346938777 [2024-06-28 04:08:46,927 INFO L175 Difference]: Start difference. First operand has 104 places, 121 transitions, 1272 flow. Second operand 7 states and 135 transitions. [2024-06-28 04:08:46,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 158 transitions, 1850 flow [2024-06-28 04:08:46,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 158 transitions, 1716 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 04:08:46,946 INFO L231 Difference]: Finished difference. Result has 104 places, 127 transitions, 1320 flow [2024-06-28 04:08:46,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1150, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1320, PETRI_PLACES=104, PETRI_TRANSITIONS=127} [2024-06-28 04:08:46,946 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 61 predicate places. [2024-06-28 04:08:46,946 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 127 transitions, 1320 flow [2024-06-28 04:08:46,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:46,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:46,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:46,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 04:08:46,947 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:08:46,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:46,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1325263478, now seen corresponding path program 3 times [2024-06-28 04:08:46,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:46,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077109857] [2024-06-28 04:08:46,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:46,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:46,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:50,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:08:50,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:50,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077109857] [2024-06-28 04:08:50,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077109857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:50,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:50,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:08:50,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448113108] [2024-06-28 04:08:50,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:50,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:08:50,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:50,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:08:50,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:08:50,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:08:50,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 127 transitions, 1320 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:50,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:50,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:08:50,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:51,961 INFO L124 PetriNetUnfolderBase]: 1307/2070 cut-off events. [2024-06-28 04:08:51,961 INFO L125 PetriNetUnfolderBase]: For 24787/24789 co-relation queries the response was YES. [2024-06-28 04:08:51,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11009 conditions, 2070 events. 1307/2070 cut-off events. For 24787/24789 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 10076 event pairs, 388 based on Foata normal form. 2/2067 useless extension candidates. Maximal degree in co-relation 10960. Up to 1699 conditions per place. [2024-06-28 04:08:51,972 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 104 selfloop transitions, 55 changer transitions 0/164 dead transitions. [2024-06-28 04:08:51,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 164 transitions, 1830 flow [2024-06-28 04:08:51,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:08:51,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:08:51,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-28 04:08:51,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44345238095238093 [2024-06-28 04:08:51,975 INFO L175 Difference]: Start difference. First operand has 104 places, 127 transitions, 1320 flow. Second operand 8 states and 149 transitions. [2024-06-28 04:08:51,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 164 transitions, 1830 flow [2024-06-28 04:08:51,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 164 transitions, 1761 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 04:08:52,003 INFO L231 Difference]: Finished difference. Result has 109 places, 130 transitions, 1407 flow [2024-06-28 04:08:52,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1254, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1407, PETRI_PLACES=109, PETRI_TRANSITIONS=130} [2024-06-28 04:08:52,003 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 66 predicate places. [2024-06-28 04:08:52,004 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 130 transitions, 1407 flow [2024-06-28 04:08:52,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:52,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:52,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:52,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 04:08:52,004 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:08:52,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:52,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1784631282, now seen corresponding path program 4 times [2024-06-28 04:08:52,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:52,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804620158] [2024-06-28 04:08:52,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:52,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:54,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:08:54,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:54,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804620158] [2024-06-28 04:08:54,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804620158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:54,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:54,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:08:54,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576891359] [2024-06-28 04:08:54,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:54,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:08:54,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:54,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:08:54,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:08:54,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:08:54,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 130 transitions, 1407 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:54,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:54,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:08:54,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:55,640 INFO L124 PetriNetUnfolderBase]: 1302/2067 cut-off events. [2024-06-28 04:08:55,640 INFO L125 PetriNetUnfolderBase]: For 28654/28691 co-relation queries the response was YES. [2024-06-28 04:08:55,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11142 conditions, 2067 events. 1302/2067 cut-off events. For 28654/28691 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 10134 event pairs, 422 based on Foata normal form. 17/2072 useless extension candidates. Maximal degree in co-relation 11092. Up to 1694 conditions per place. [2024-06-28 04:08:55,651 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 100 selfloop transitions, 52 changer transitions 0/157 dead transitions. [2024-06-28 04:08:55,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 157 transitions, 1860 flow [2024-06-28 04:08:55,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:08:55,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:08:55,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-28 04:08:55,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43537414965986393 [2024-06-28 04:08:55,652 INFO L175 Difference]: Start difference. First operand has 109 places, 130 transitions, 1407 flow. Second operand 7 states and 128 transitions. [2024-06-28 04:08:55,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 157 transitions, 1860 flow [2024-06-28 04:08:55,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 157 transitions, 1734 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 04:08:55,680 INFO L231 Difference]: Finished difference. Result has 110 places, 131 transitions, 1406 flow [2024-06-28 04:08:55,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1283, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1406, PETRI_PLACES=110, PETRI_TRANSITIONS=131} [2024-06-28 04:08:55,681 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 67 predicate places. [2024-06-28 04:08:55,681 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 131 transitions, 1406 flow [2024-06-28 04:08:55,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:55,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:55,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:55,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 04:08:55,681 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:08:55,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:55,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1791988512, now seen corresponding path program 5 times [2024-06-28 04:08:55,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:55,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176854353] [2024-06-28 04:08:55,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:55,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:55,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:58,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:08:58,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:58,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176854353] [2024-06-28 04:08:58,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176854353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:58,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:58,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:08:58,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458892272] [2024-06-28 04:08:58,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:58,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:08:58,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:58,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:08:58,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:08:58,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:08:58,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 131 transitions, 1406 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:08:58,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:58,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:08:58,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:09:00,334 INFO L124 PetriNetUnfolderBase]: 1297/2041 cut-off events. [2024-06-28 04:09:00,334 INFO L125 PetriNetUnfolderBase]: For 30011/30019 co-relation queries the response was YES. [2024-06-28 04:09:00,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11152 conditions, 2041 events. 1297/2041 cut-off events. For 30011/30019 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 9802 event pairs, 427 based on Foata normal form. 4/2028 useless extension candidates. Maximal degree in co-relation 11101. Up to 1689 conditions per place. [2024-06-28 04:09:00,346 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 97 selfloop transitions, 58 changer transitions 0/160 dead transitions. [2024-06-28 04:09:00,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 160 transitions, 1798 flow [2024-06-28 04:09:00,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:09:00,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:09:00,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-28 04:09:00,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226190476190476 [2024-06-28 04:09:00,347 INFO L175 Difference]: Start difference. First operand has 110 places, 131 transitions, 1406 flow. Second operand 8 states and 142 transitions. [2024-06-28 04:09:00,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 160 transitions, 1798 flow [2024-06-28 04:09:00,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 160 transitions, 1707 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-28 04:09:00,374 INFO L231 Difference]: Finished difference. Result has 114 places, 131 transitions, 1439 flow [2024-06-28 04:09:00,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1315, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1439, PETRI_PLACES=114, PETRI_TRANSITIONS=131} [2024-06-28 04:09:00,374 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 71 predicate places. [2024-06-28 04:09:00,374 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 131 transitions, 1439 flow [2024-06-28 04:09:00,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:00,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:09:00,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:09:00,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 04:09:00,374 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:09:00,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:09:00,375 INFO L85 PathProgramCache]: Analyzing trace with hash -937813352, now seen corresponding path program 1 times [2024-06-28 04:09:00,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:09:00,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375975720] [2024-06-28 04:09:00,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:09:00,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:09:00,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:09:03,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:09:03,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:09:03,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375975720] [2024-06-28 04:09:03,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375975720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:09:03,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:09:03,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:09:03,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237676058] [2024-06-28 04:09:03,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:09:03,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:09:03,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:09:03,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:09:03,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:09:03,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:09:03,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 131 transitions, 1439 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:03,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:09:03,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:09:03,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:09:04,591 INFO L124 PetriNetUnfolderBase]: 1516/2415 cut-off events. [2024-06-28 04:09:04,591 INFO L125 PetriNetUnfolderBase]: For 39117/39125 co-relation queries the response was YES. [2024-06-28 04:09:04,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13347 conditions, 2415 events. 1516/2415 cut-off events. For 39117/39125 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 12374 event pairs, 278 based on Foata normal form. 14/2428 useless extension candidates. Maximal degree in co-relation 13294. Up to 1747 conditions per place. [2024-06-28 04:09:04,606 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 124 selfloop transitions, 59 changer transitions 0/188 dead transitions. [2024-06-28 04:09:04,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 188 transitions, 2113 flow [2024-06-28 04:09:04,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:09:04,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:09:04,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-28 04:09:04,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603174603174603 [2024-06-28 04:09:04,608 INFO L175 Difference]: Start difference. First operand has 114 places, 131 transitions, 1439 flow. Second operand 9 states and 174 transitions. [2024-06-28 04:09:04,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 188 transitions, 2113 flow [2024-06-28 04:09:04,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 188 transitions, 1987 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 04:09:04,640 INFO L231 Difference]: Finished difference. Result has 118 places, 138 transitions, 1542 flow [2024-06-28 04:09:04,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1313, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1542, PETRI_PLACES=118, PETRI_TRANSITIONS=138} [2024-06-28 04:09:04,641 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 75 predicate places. [2024-06-28 04:09:04,641 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 138 transitions, 1542 flow [2024-06-28 04:09:04,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:04,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:09:04,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:09:04,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 04:09:04,641 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:09:04,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:09:04,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1901662550, now seen corresponding path program 2 times [2024-06-28 04:09:04,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:09:04,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686109858] [2024-06-28 04:09:04,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:09:04,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:09:04,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:09:07,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:09:07,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:09:07,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686109858] [2024-06-28 04:09:07,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686109858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:09:07,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:09:07,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:09:07,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178436571] [2024-06-28 04:09:07,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:09:07,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:09:07,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:09:07,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:09:07,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:09:07,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:09:07,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 138 transitions, 1542 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:07,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:09:07,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:09:07,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:09:08,974 INFO L124 PetriNetUnfolderBase]: 1503/2396 cut-off events. [2024-06-28 04:09:08,975 INFO L125 PetriNetUnfolderBase]: For 42223/42231 co-relation queries the response was YES. [2024-06-28 04:09:08,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13628 conditions, 2396 events. 1503/2396 cut-off events. For 42223/42231 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 12238 event pairs, 375 based on Foata normal form. 14/2409 useless extension candidates. Maximal degree in co-relation 13573. Up to 2089 conditions per place. [2024-06-28 04:09:08,991 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 120 selfloop transitions, 59 changer transitions 0/184 dead transitions. [2024-06-28 04:09:08,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 184 transitions, 2072 flow [2024-06-28 04:09:08,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:09:08,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:09:08,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 04:09:08,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417989417989418 [2024-06-28 04:09:08,992 INFO L175 Difference]: Start difference. First operand has 118 places, 138 transitions, 1542 flow. Second operand 9 states and 167 transitions. [2024-06-28 04:09:08,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 184 transitions, 2072 flow [2024-06-28 04:09:09,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 184 transitions, 1967 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 04:09:09,035 INFO L231 Difference]: Finished difference. Result has 122 places, 141 transitions, 1618 flow [2024-06-28 04:09:09,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1441, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1618, PETRI_PLACES=122, PETRI_TRANSITIONS=141} [2024-06-28 04:09:09,036 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 79 predicate places. [2024-06-28 04:09:09,036 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 141 transitions, 1618 flow [2024-06-28 04:09:09,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:09,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:09:09,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:09:09,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 04:09:09,036 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:09:09,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:09:09,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1997859334, now seen corresponding path program 3 times [2024-06-28 04:09:09,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:09:09,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328315881] [2024-06-28 04:09:09,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:09:09,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:09:09,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:09:12,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:09:12,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:09:12,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328315881] [2024-06-28 04:09:12,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328315881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:09:12,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:09:12,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:09:12,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18086029] [2024-06-28 04:09:12,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:09:12,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:09:12,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:09:12,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:09:12,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:09:12,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:09:12,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 141 transitions, 1618 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:12,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:09:12,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:09:12,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:09:14,045 INFO L124 PetriNetUnfolderBase]: 1523/2422 cut-off events. [2024-06-28 04:09:14,045 INFO L125 PetriNetUnfolderBase]: For 46744/46746 co-relation queries the response was YES. [2024-06-28 04:09:14,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14125 conditions, 2422 events. 1523/2422 cut-off events. For 46744/46746 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 12369 event pairs, 392 based on Foata normal form. 4/2421 useless extension candidates. Maximal degree in co-relation 14068. Up to 2029 conditions per place. [2024-06-28 04:09:14,059 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 113 selfloop transitions, 58 changer transitions 0/176 dead transitions. [2024-06-28 04:09:14,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 176 transitions, 2086 flow [2024-06-28 04:09:14,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:09:14,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:09:14,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 04:09:14,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 04:09:14,061 INFO L175 Difference]: Start difference. First operand has 122 places, 141 transitions, 1618 flow. Second operand 8 states and 147 transitions. [2024-06-28 04:09:14,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 176 transitions, 2086 flow [2024-06-28 04:09:14,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 176 transitions, 1945 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 04:09:14,101 INFO L231 Difference]: Finished difference. Result has 123 places, 143 transitions, 1638 flow [2024-06-28 04:09:14,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1477, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1638, PETRI_PLACES=123, PETRI_TRANSITIONS=143} [2024-06-28 04:09:14,102 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 80 predicate places. [2024-06-28 04:09:14,102 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 143 transitions, 1638 flow [2024-06-28 04:09:14,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:14,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:09:14,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:09:14,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 04:09:14,102 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:09:14,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:09:14,102 INFO L85 PathProgramCache]: Analyzing trace with hash 2017138418, now seen corresponding path program 1 times [2024-06-28 04:09:14,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:09:14,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876520805] [2024-06-28 04:09:14,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:09:14,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:09:14,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:09:16,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:09:16,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:09:16,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876520805] [2024-06-28 04:09:16,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876520805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:09:16,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:09:16,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:09:16,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783056713] [2024-06-28 04:09:16,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:09:16,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:09:16,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:09:16,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:09:16,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:09:16,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:09:16,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 143 transitions, 1638 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:16,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:09:16,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:09:16,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:09:17,673 INFO L124 PetriNetUnfolderBase]: 1543/2459 cut-off events. [2024-06-28 04:09:17,673 INFO L125 PetriNetUnfolderBase]: For 50835/50843 co-relation queries the response was YES. [2024-06-28 04:09:17,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14492 conditions, 2459 events. 1543/2459 cut-off events. For 50835/50843 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 12628 event pairs, 379 based on Foata normal form. 12/2467 useless extension candidates. Maximal degree in co-relation 14434. Up to 2218 conditions per place. [2024-06-28 04:09:17,688 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 144 selfloop transitions, 26 changer transitions 0/175 dead transitions. [2024-06-28 04:09:17,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 175 transitions, 2092 flow [2024-06-28 04:09:17,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:09:17,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:09:17,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-28 04:09:17,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4387755102040816 [2024-06-28 04:09:17,690 INFO L175 Difference]: Start difference. First operand has 123 places, 143 transitions, 1638 flow. Second operand 7 states and 129 transitions. [2024-06-28 04:09:17,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 175 transitions, 2092 flow [2024-06-28 04:09:17,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 175 transitions, 1949 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 04:09:17,736 INFO L231 Difference]: Finished difference. Result has 124 places, 145 transitions, 1582 flow [2024-06-28 04:09:17,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1495, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1582, PETRI_PLACES=124, PETRI_TRANSITIONS=145} [2024-06-28 04:09:17,736 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 81 predicate places. [2024-06-28 04:09:17,737 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 145 transitions, 1582 flow [2024-06-28 04:09:17,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:17,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:09:17,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:09:17,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 04:09:17,737 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:09:17,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:09:17,738 INFO L85 PathProgramCache]: Analyzing trace with hash 282927062, now seen corresponding path program 4 times [2024-06-28 04:09:17,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:09:17,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30929123] [2024-06-28 04:09:17,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:09:17,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:09:17,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:09:20,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:09:20,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:09:20,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30929123] [2024-06-28 04:09:20,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30929123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:09:20,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:09:20,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:09:20,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961782169] [2024-06-28 04:09:20,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:09:20,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:09:20,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:09:20,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:09:20,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:09:20,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:09:20,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 145 transitions, 1582 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:20,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:09:20,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:09:20,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:09:22,133 INFO L124 PetriNetUnfolderBase]: 1535/2423 cut-off events. [2024-06-28 04:09:22,133 INFO L125 PetriNetUnfolderBase]: For 53748/53756 co-relation queries the response was YES. [2024-06-28 04:09:22,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14339 conditions, 2423 events. 1535/2423 cut-off events. For 53748/53756 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 12198 event pairs, 432 based on Foata normal form. 6/2410 useless extension candidates. Maximal degree in co-relation 14280. Up to 2049 conditions per place. [2024-06-28 04:09:22,152 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 112 selfloop transitions, 60 changer transitions 0/177 dead transitions. [2024-06-28 04:09:22,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 177 transitions, 2050 flow [2024-06-28 04:09:22,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:09:22,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:09:22,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-28 04:09:22,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226190476190476 [2024-06-28 04:09:22,154 INFO L175 Difference]: Start difference. First operand has 124 places, 145 transitions, 1582 flow. Second operand 8 states and 142 transitions. [2024-06-28 04:09:22,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 177 transitions, 2050 flow [2024-06-28 04:09:22,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 177 transitions, 1981 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 04:09:22,201 INFO L231 Difference]: Finished difference. Result has 127 places, 147 transitions, 1684 flow [2024-06-28 04:09:22,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1513, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1684, PETRI_PLACES=127, PETRI_TRANSITIONS=147} [2024-06-28 04:09:22,201 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 84 predicate places. [2024-06-28 04:09:22,201 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 147 transitions, 1684 flow [2024-06-28 04:09:22,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:22,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:09:22,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:09:22,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 04:09:22,202 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:09:22,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:09:22,202 INFO L85 PathProgramCache]: Analyzing trace with hash -2071557140, now seen corresponding path program 2 times [2024-06-28 04:09:22,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:09:22,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986589749] [2024-06-28 04:09:22,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:09:22,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:09:22,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:09:24,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:09:24,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:09:24,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986589749] [2024-06-28 04:09:24,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986589749] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:09:24,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:09:24,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:09:24,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806934708] [2024-06-28 04:09:24,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:09:24,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:09:24,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:09:24,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:09:24,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:09:24,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:09:24,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 147 transitions, 1684 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:24,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:09:24,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:09:24,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:09:25,888 INFO L124 PetriNetUnfolderBase]: 1555/2485 cut-off events. [2024-06-28 04:09:25,888 INFO L125 PetriNetUnfolderBase]: For 59107/59148 co-relation queries the response was YES. [2024-06-28 04:09:25,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14913 conditions, 2485 events. 1555/2485 cut-off events. For 59107/59148 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 12856 event pairs, 397 based on Foata normal form. 36/2515 useless extension candidates. Maximal degree in co-relation 14853. Up to 2238 conditions per place. [2024-06-28 04:09:25,905 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 146 selfloop transitions, 25 changer transitions 0/176 dead transitions. [2024-06-28 04:09:25,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 176 transitions, 2138 flow [2024-06-28 04:09:25,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:09:25,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:09:25,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-28 04:09:25,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4217687074829932 [2024-06-28 04:09:25,907 INFO L175 Difference]: Start difference. First operand has 127 places, 147 transitions, 1684 flow. Second operand 7 states and 124 transitions. [2024-06-28 04:09:25,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 176 transitions, 2138 flow [2024-06-28 04:09:25,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 176 transitions, 1985 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 04:09:25,964 INFO L231 Difference]: Finished difference. Result has 128 places, 149 transitions, 1622 flow [2024-06-28 04:09:25,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1531, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1622, PETRI_PLACES=128, PETRI_TRANSITIONS=149} [2024-06-28 04:09:25,965 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 85 predicate places. [2024-06-28 04:09:25,965 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 149 transitions, 1622 flow [2024-06-28 04:09:25,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:25,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:09:25,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:09:25,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 04:09:25,968 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:09:25,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:09:25,968 INFO L85 PathProgramCache]: Analyzing trace with hash 519583790, now seen corresponding path program 3 times [2024-06-28 04:09:25,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:09:25,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819133403] [2024-06-28 04:09:25,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:09:25,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:09:25,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:09:28,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:09:28,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:09:28,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819133403] [2024-06-28 04:09:28,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819133403] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:09:28,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:09:28,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:09:28,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976567102] [2024-06-28 04:09:28,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:09:28,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:09:28,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:09:28,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:09:28,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:09:28,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:09:28,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 149 transitions, 1622 flow. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:28,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:09:28,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:09:28,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:09:29,288 INFO L124 PetriNetUnfolderBase]: 1547/2473 cut-off events. [2024-06-28 04:09:29,288 INFO L125 PetriNetUnfolderBase]: For 60852/60893 co-relation queries the response was YES. [2024-06-28 04:09:29,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14744 conditions, 2473 events. 1547/2473 cut-off events. For 60852/60893 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 12820 event pairs, 359 based on Foata normal form. 36/2503 useless extension candidates. Maximal degree in co-relation 14683. Up to 2154 conditions per place. [2024-06-28 04:09:29,307 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 144 selfloop transitions, 30 changer transitions 0/179 dead transitions. [2024-06-28 04:09:29,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 179 transitions, 2088 flow [2024-06-28 04:09:29,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:09:29,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:09:29,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-28 04:09:29,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42517006802721086 [2024-06-28 04:09:29,308 INFO L175 Difference]: Start difference. First operand has 128 places, 149 transitions, 1622 flow. Second operand 7 states and 125 transitions. [2024-06-28 04:09:29,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 179 transitions, 2088 flow [2024-06-28 04:09:29,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 179 transitions, 2015 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 04:09:29,357 INFO L231 Difference]: Finished difference. Result has 130 places, 151 transitions, 1654 flow [2024-06-28 04:09:29,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1549, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1654, PETRI_PLACES=130, PETRI_TRANSITIONS=151} [2024-06-28 04:09:29,357 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 87 predicate places. [2024-06-28 04:09:29,357 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 151 transitions, 1654 flow [2024-06-28 04:09:29,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:29,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:09:29,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:09:29,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 04:09:29,358 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:09:29,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:09:29,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1303832851, now seen corresponding path program 1 times [2024-06-28 04:09:29,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:09:29,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053550546] [2024-06-28 04:09:29,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:09:29,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:09:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:09:30,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:09:30,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:09:30,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053550546] [2024-06-28 04:09:30,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053550546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:09:30,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:09:30,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:09:30,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250459867] [2024-06-28 04:09:30,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:09:30,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:09:30,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:09:30,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:09:30,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:09:31,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 04:09:31,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 151 transitions, 1654 flow. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:31,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:09:31,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 04:09:31,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:09:31,800 INFO L124 PetriNetUnfolderBase]: 1440/2347 cut-off events. [2024-06-28 04:09:31,800 INFO L125 PetriNetUnfolderBase]: For 62654/62670 co-relation queries the response was YES. [2024-06-28 04:09:31,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14237 conditions, 2347 events. 1440/2347 cut-off events. For 62654/62670 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 12371 event pairs, 384 based on Foata normal form. 16/2360 useless extension candidates. Maximal degree in co-relation 14175. Up to 2147 conditions per place. [2024-06-28 04:09:31,818 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 138 selfloop transitions, 10 changer transitions 0/165 dead transitions. [2024-06-28 04:09:31,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 165 transitions, 1998 flow [2024-06-28 04:09:31,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 04:09:31,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 04:09:31,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 90 transitions. [2024-06-28 04:09:31,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 04:09:31,819 INFO L175 Difference]: Start difference. First operand has 130 places, 151 transitions, 1654 flow. Second operand 5 states and 90 transitions. [2024-06-28 04:09:31,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 165 transitions, 1998 flow [2024-06-28 04:09:31,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 165 transitions, 1911 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 04:09:31,873 INFO L231 Difference]: Finished difference. Result has 130 places, 154 transitions, 1617 flow [2024-06-28 04:09:31,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1567, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1617, PETRI_PLACES=130, PETRI_TRANSITIONS=154} [2024-06-28 04:09:31,873 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 87 predicate places. [2024-06-28 04:09:31,874 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 154 transitions, 1617 flow [2024-06-28 04:09:31,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:31,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:09:31,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:09:31,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 04:09:31,874 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:09:31,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:09:31,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1171720929, now seen corresponding path program 1 times [2024-06-28 04:09:31,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:09:31,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508243621] [2024-06-28 04:09:31,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:09:31,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:09:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:09:34,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:09:34,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:09:34,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508243621] [2024-06-28 04:09:34,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508243621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:09:34,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:09:34,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:09:34,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697539159] [2024-06-28 04:09:34,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:09:34,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:09:34,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:09:34,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:09:34,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:09:34,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:09:34,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 154 transitions, 1617 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:34,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:09:34,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:09:34,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:09:36,151 INFO L124 PetriNetUnfolderBase]: 1609/2576 cut-off events. [2024-06-28 04:09:36,152 INFO L125 PetriNetUnfolderBase]: For 72006/72014 co-relation queries the response was YES. [2024-06-28 04:09:36,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15525 conditions, 2576 events. 1609/2576 cut-off events. For 72006/72014 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 13327 event pairs, 273 based on Foata normal form. 26/2601 useless extension candidates. Maximal degree in co-relation 15462. Up to 1831 conditions per place. [2024-06-28 04:09:36,205 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 139 selfloop transitions, 63 changer transitions 0/207 dead transitions. [2024-06-28 04:09:36,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 207 transitions, 2317 flow [2024-06-28 04:09:36,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:09:36,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:09:36,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-28 04:09:36,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-28 04:09:36,206 INFO L175 Difference]: Start difference. First operand has 130 places, 154 transitions, 1617 flow. Second operand 9 states and 175 transitions. [2024-06-28 04:09:36,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 207 transitions, 2317 flow [2024-06-28 04:09:36,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 207 transitions, 2289 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 04:09:36,260 INFO L231 Difference]: Finished difference. Result has 136 places, 156 transitions, 1753 flow [2024-06-28 04:09:36,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1589, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1753, PETRI_PLACES=136, PETRI_TRANSITIONS=156} [2024-06-28 04:09:36,260 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 93 predicate places. [2024-06-28 04:09:36,260 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 156 transitions, 1753 flow [2024-06-28 04:09:36,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:36,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:09:36,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:09:36,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 04:09:36,261 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:09:36,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:09:36,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1177854209, now seen corresponding path program 2 times [2024-06-28 04:09:36,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:09:36,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030312197] [2024-06-28 04:09:36,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:09:36,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:09:36,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:09:39,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:09:39,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:09:39,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030312197] [2024-06-28 04:09:39,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030312197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:09:39,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:09:39,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:09:39,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789929207] [2024-06-28 04:09:39,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:09:39,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:09:39,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:09:39,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:09:39,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:09:39,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:09:39,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 156 transitions, 1753 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:39,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:09:39,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:09:39,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:09:40,564 INFO L124 PetriNetUnfolderBase]: 1563/2506 cut-off events. [2024-06-28 04:09:40,564 INFO L125 PetriNetUnfolderBase]: For 70452/70460 co-relation queries the response was YES. [2024-06-28 04:09:40,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15022 conditions, 2506 events. 1563/2506 cut-off events. For 70452/70460 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 12923 event pairs, 355 based on Foata normal form. 32/2537 useless extension candidates. Maximal degree in co-relation 14958. Up to 2075 conditions per place. [2024-06-28 04:09:40,582 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 140 selfloop transitions, 58 changer transitions 0/203 dead transitions. [2024-06-28 04:09:40,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 203 transitions, 2312 flow [2024-06-28 04:09:40,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:09:40,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:09:40,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-28 04:09:40,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470899470899471 [2024-06-28 04:09:40,583 INFO L175 Difference]: Start difference. First operand has 136 places, 156 transitions, 1753 flow. Second operand 9 states and 169 transitions. [2024-06-28 04:09:40,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 203 transitions, 2312 flow [2024-06-28 04:09:40,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 203 transitions, 2188 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 04:09:40,649 INFO L231 Difference]: Finished difference. Result has 139 places, 157 transitions, 1778 flow [2024-06-28 04:09:40,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1634, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1778, PETRI_PLACES=139, PETRI_TRANSITIONS=157} [2024-06-28 04:09:40,650 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 96 predicate places. [2024-06-28 04:09:40,650 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 157 transitions, 1778 flow [2024-06-28 04:09:40,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:40,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:09:40,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:09:40,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 04:09:40,651 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:09:40,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:09:40,651 INFO L85 PathProgramCache]: Analyzing trace with hash -2027057003, now seen corresponding path program 3 times [2024-06-28 04:09:40,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:09:40,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196921854] [2024-06-28 04:09:40,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:09:40,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:09:40,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:09:44,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:09:44,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:09:44,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196921854] [2024-06-28 04:09:44,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196921854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:09:44,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:09:44,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:09:44,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7203502] [2024-06-28 04:09:44,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:09:44,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:09:44,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:09:44,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:09:44,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:09:44,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:09:44,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 157 transitions, 1778 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:44,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:09:44,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:09:44,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:09:45,892 INFO L124 PetriNetUnfolderBase]: 1631/2628 cut-off events. [2024-06-28 04:09:45,892 INFO L125 PetriNetUnfolderBase]: For 73097/73099 co-relation queries the response was YES. [2024-06-28 04:09:45,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15615 conditions, 2628 events. 1631/2628 cut-off events. For 73097/73099 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 13865 event pairs, 392 based on Foata normal form. 16/2639 useless extension candidates. Maximal degree in co-relation 15550. Up to 2133 conditions per place. [2024-06-28 04:09:45,911 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 137 selfloop transitions, 57 changer transitions 0/199 dead transitions. [2024-06-28 04:09:45,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 199 transitions, 2318 flow [2024-06-28 04:09:45,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:09:45,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:09:45,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-28 04:09:45,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2024-06-28 04:09:45,912 INFO L175 Difference]: Start difference. First operand has 139 places, 157 transitions, 1778 flow. Second operand 9 states and 165 transitions. [2024-06-28 04:09:45,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 199 transitions, 2318 flow [2024-06-28 04:09:45,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 199 transitions, 2206 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 04:09:45,977 INFO L231 Difference]: Finished difference. Result has 141 places, 158 transitions, 1815 flow [2024-06-28 04:09:45,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1666, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1815, PETRI_PLACES=141, PETRI_TRANSITIONS=158} [2024-06-28 04:09:45,977 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 98 predicate places. [2024-06-28 04:09:45,978 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 158 transitions, 1815 flow [2024-06-28 04:09:45,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:45,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:09:45,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:09:45,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 04:09:45,978 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:09:45,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:09:45,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1804096195, now seen corresponding path program 4 times [2024-06-28 04:09:45,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:09:45,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788498683] [2024-06-28 04:09:45,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:09:45,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:09:45,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:09:50,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:09:50,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:09:50,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788498683] [2024-06-28 04:09:50,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788498683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:09:50,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:09:50,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:09:50,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290677288] [2024-06-28 04:09:50,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:09:50,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:09:50,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:09:50,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:09:50,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:09:50,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:09:50,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 158 transitions, 1815 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:50,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:09:50,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:09:50,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:09:51,759 INFO L124 PetriNetUnfolderBase]: 1679/2712 cut-off events. [2024-06-28 04:09:51,759 INFO L125 PetriNetUnfolderBase]: For 77150/77152 co-relation queries the response was YES. [2024-06-28 04:09:51,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16208 conditions, 2712 events. 1679/2712 cut-off events. For 77150/77152 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 14436 event pairs, 386 based on Foata normal form. 12/2719 useless extension candidates. Maximal degree in co-relation 16142. Up to 2111 conditions per place. [2024-06-28 04:09:51,778 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 143 selfloop transitions, 60 changer transitions 0/208 dead transitions. [2024-06-28 04:09:51,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 208 transitions, 2403 flow [2024-06-28 04:09:51,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:09:51,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:09:51,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-28 04:09:51,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4357142857142857 [2024-06-28 04:09:51,779 INFO L175 Difference]: Start difference. First operand has 141 places, 158 transitions, 1815 flow. Second operand 10 states and 183 transitions. [2024-06-28 04:09:51,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 208 transitions, 2403 flow [2024-06-28 04:09:51,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 208 transitions, 2272 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 04:09:51,854 INFO L231 Difference]: Finished difference. Result has 144 places, 159 transitions, 1840 flow [2024-06-28 04:09:51,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1684, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1840, PETRI_PLACES=144, PETRI_TRANSITIONS=159} [2024-06-28 04:09:51,855 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 101 predicate places. [2024-06-28 04:09:51,855 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 159 transitions, 1840 flow [2024-06-28 04:09:51,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:51,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:09:51,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:09:51,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 04:09:51,855 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:09:51,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:09:51,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1798585945, now seen corresponding path program 5 times [2024-06-28 04:09:51,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:09:51,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946229817] [2024-06-28 04:09:51,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:09:51,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:09:51,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:09:54,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:09:54,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:09:54,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946229817] [2024-06-28 04:09:54,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946229817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:09:54,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:09:54,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:09:54,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287316559] [2024-06-28 04:09:54,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:09:54,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:09:54,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:09:54,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:09:54,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:09:54,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:09:54,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 159 transitions, 1840 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:54,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:09:54,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:09:54,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:09:56,319 INFO L124 PetriNetUnfolderBase]: 1747/2843 cut-off events. [2024-06-28 04:09:56,319 INFO L125 PetriNetUnfolderBase]: For 84104/84106 co-relation queries the response was YES. [2024-06-28 04:09:56,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16838 conditions, 2843 events. 1747/2843 cut-off events. For 84104/84106 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 15542 event pairs, 422 based on Foata normal form. 16/2855 useless extension candidates. Maximal degree in co-relation 16771. Up to 2333 conditions per place. [2024-06-28 04:09:56,339 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 137 selfloop transitions, 54 changer transitions 0/196 dead transitions. [2024-06-28 04:09:56,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 196 transitions, 2364 flow [2024-06-28 04:09:56,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:09:56,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:09:56,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-28 04:09:56,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44345238095238093 [2024-06-28 04:09:56,340 INFO L175 Difference]: Start difference. First operand has 144 places, 159 transitions, 1840 flow. Second operand 8 states and 149 transitions. [2024-06-28 04:09:56,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 196 transitions, 2364 flow [2024-06-28 04:09:56,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 196 transitions, 2222 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 04:09:56,414 INFO L231 Difference]: Finished difference. Result has 144 places, 160 transitions, 1845 flow [2024-06-28 04:09:56,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1698, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1845, PETRI_PLACES=144, PETRI_TRANSITIONS=160} [2024-06-28 04:09:56,415 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 101 predicate places. [2024-06-28 04:09:56,415 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 160 transitions, 1845 flow [2024-06-28 04:09:56,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:56,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:09:56,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:09:56,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 04:09:56,415 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:09:56,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:09:56,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1798370743, now seen corresponding path program 1 times [2024-06-28 04:09:56,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:09:56,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631542533] [2024-06-28 04:09:56,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:09:56,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:09:56,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:09:59,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:09:59,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:09:59,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631542533] [2024-06-28 04:09:59,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631542533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:09:59,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:09:59,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:09:59,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897397371] [2024-06-28 04:09:59,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:09:59,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:09:59,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:09:59,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:09:59,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:09:59,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:09:59,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 160 transitions, 1845 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:09:59,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:09:59,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:09:59,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:10:00,598 INFO L124 PetriNetUnfolderBase]: 1891/3111 cut-off events. [2024-06-28 04:10:00,598 INFO L125 PetriNetUnfolderBase]: For 97197/97199 co-relation queries the response was YES. [2024-06-28 04:10:00,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18565 conditions, 3111 events. 1891/3111 cut-off events. For 97197/97199 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 17616 event pairs, 452 based on Foata normal form. 12/3119 useless extension candidates. Maximal degree in co-relation 18497. Up to 2087 conditions per place. [2024-06-28 04:10:00,619 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 139 selfloop transitions, 59 changer transitions 0/203 dead transitions. [2024-06-28 04:10:00,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 203 transitions, 2555 flow [2024-06-28 04:10:00,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:10:00,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:10:00,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-28 04:10:00,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45535714285714285 [2024-06-28 04:10:00,620 INFO L175 Difference]: Start difference. First operand has 144 places, 160 transitions, 1845 flow. Second operand 8 states and 153 transitions. [2024-06-28 04:10:00,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 203 transitions, 2555 flow [2024-06-28 04:10:00,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 203 transitions, 2426 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 04:10:00,713 INFO L231 Difference]: Finished difference. Result has 146 places, 162 transitions, 1906 flow [2024-06-28 04:10:00,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1716, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1906, PETRI_PLACES=146, PETRI_TRANSITIONS=162} [2024-06-28 04:10:00,714 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 103 predicate places. [2024-06-28 04:10:00,714 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 162 transitions, 1906 flow [2024-06-28 04:10:00,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:00,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:10:00,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:10:00,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 04:10:00,714 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:10:00,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:10:00,715 INFO L85 PathProgramCache]: Analyzing trace with hash 180953215, now seen corresponding path program 6 times [2024-06-28 04:10:00,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:10:00,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305678643] [2024-06-28 04:10:00,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:10:00,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:10:00,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:10:04,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:10:04,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:10:04,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305678643] [2024-06-28 04:10:04,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305678643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:10:04,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:10:04,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:10:04,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008057290] [2024-06-28 04:10:04,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:10:04,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:10:04,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:10:04,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:10:04,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:10:04,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:10:04,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 162 transitions, 1906 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:04,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:10:04,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:10:04,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:10:05,596 INFO L124 PetriNetUnfolderBase]: 1863/3037 cut-off events. [2024-06-28 04:10:05,596 INFO L125 PetriNetUnfolderBase]: For 95995/96003 co-relation queries the response was YES. [2024-06-28 04:10:05,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17872 conditions, 3037 events. 1863/3037 cut-off events. For 95995/96003 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 16958 event pairs, 491 based on Foata normal form. 18/3038 useless extension candidates. Maximal degree in co-relation 17803. Up to 2533 conditions per place. [2024-06-28 04:10:05,619 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 136 selfloop transitions, 59 changer transitions 0/200 dead transitions. [2024-06-28 04:10:05,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 200 transitions, 2414 flow [2024-06-28 04:10:05,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:10:05,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:10:05,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 04:10:05,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42328042328042326 [2024-06-28 04:10:05,621 INFO L175 Difference]: Start difference. First operand has 146 places, 162 transitions, 1906 flow. Second operand 9 states and 160 transitions. [2024-06-28 04:10:05,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 200 transitions, 2414 flow [2024-06-28 04:10:05,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 200 transitions, 2306 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-28 04:10:05,728 INFO L231 Difference]: Finished difference. Result has 151 places, 162 transitions, 1923 flow [2024-06-28 04:10:05,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1798, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1923, PETRI_PLACES=151, PETRI_TRANSITIONS=162} [2024-06-28 04:10:05,729 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 108 predicate places. [2024-06-28 04:10:05,729 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 162 transitions, 1923 flow [2024-06-28 04:10:05,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:05,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:10:05,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:10:05,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 04:10:05,729 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:10:05,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:10:05,730 INFO L85 PathProgramCache]: Analyzing trace with hash 284228805, now seen corresponding path program 7 times [2024-06-28 04:10:05,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:10:05,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067990103] [2024-06-28 04:10:05,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:10:05,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:10:05,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:10:09,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:10:09,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:10:09,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067990103] [2024-06-28 04:10:09,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067990103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:10:09,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:10:09,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:10:09,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605651761] [2024-06-28 04:10:09,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:10:09,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:10:09,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:10:09,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:10:09,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:10:09,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:10:09,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 162 transitions, 1923 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:09,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:10:09,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:10:09,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:10:10,792 INFO L124 PetriNetUnfolderBase]: 1911/3133 cut-off events. [2024-06-28 04:10:10,793 INFO L125 PetriNetUnfolderBase]: For 97094/97102 co-relation queries the response was YES. [2024-06-28 04:10:10,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18382 conditions, 3133 events. 1911/3133 cut-off events. For 97094/97102 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 17751 event pairs, 491 based on Foata normal form. 14/3130 useless extension candidates. Maximal degree in co-relation 18311. Up to 2511 conditions per place. [2024-06-28 04:10:10,819 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 142 selfloop transitions, 62 changer transitions 0/209 dead transitions. [2024-06-28 04:10:10,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 209 transitions, 2511 flow [2024-06-28 04:10:10,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:10:10,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:10:10,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-28 04:10:10,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4238095238095238 [2024-06-28 04:10:10,820 INFO L175 Difference]: Start difference. First operand has 151 places, 162 transitions, 1923 flow. Second operand 10 states and 178 transitions. [2024-06-28 04:10:10,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 209 transitions, 2511 flow [2024-06-28 04:10:10,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 209 transitions, 2388 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 04:10:10,927 INFO L231 Difference]: Finished difference. Result has 154 places, 163 transitions, 1966 flow [2024-06-28 04:10:10,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1800, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1966, PETRI_PLACES=154, PETRI_TRANSITIONS=163} [2024-06-28 04:10:10,928 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 111 predicate places. [2024-06-28 04:10:10,928 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 163 transitions, 1966 flow [2024-06-28 04:10:10,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:10,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:10:10,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:10:10,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 04:10:10,928 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:10:10,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:10:10,929 INFO L85 PathProgramCache]: Analyzing trace with hash -657607971, now seen corresponding path program 8 times [2024-06-28 04:10:10,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:10:10,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809905721] [2024-06-28 04:10:10,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:10:10,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:10:10,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:10:14,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:10:14,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:10:14,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809905721] [2024-06-28 04:10:14,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809905721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:10:14,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:10:14,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:10:14,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283233361] [2024-06-28 04:10:14,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:10:14,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:10:14,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:10:14,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:10:14,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:10:14,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:10:14,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 163 transitions, 1966 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:14,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:10:14,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:10:14,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:10:15,428 INFO L124 PetriNetUnfolderBase]: 1951/3224 cut-off events. [2024-06-28 04:10:15,428 INFO L125 PetriNetUnfolderBase]: For 104342/104375 co-relation queries the response was YES. [2024-06-28 04:10:15,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18766 conditions, 3224 events. 1951/3224 cut-off events. For 104342/104375 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 18588 event pairs, 514 based on Foata normal form. 29/3241 useless extension candidates. Maximal degree in co-relation 18694. Up to 2689 conditions per place. [2024-06-28 04:10:15,451 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 139 selfloop transitions, 53 changer transitions 0/197 dead transitions. [2024-06-28 04:10:15,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 197 transitions, 2490 flow [2024-06-28 04:10:15,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:10:15,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:10:15,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 04:10:15,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 04:10:15,452 INFO L175 Difference]: Start difference. First operand has 154 places, 163 transitions, 1966 flow. Second operand 8 states and 144 transitions. [2024-06-28 04:10:15,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 197 transitions, 2490 flow [2024-06-28 04:10:15,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 197 transitions, 2338 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 04:10:15,563 INFO L231 Difference]: Finished difference. Result has 154 places, 164 transitions, 1965 flow [2024-06-28 04:10:15,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1814, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1965, PETRI_PLACES=154, PETRI_TRANSITIONS=164} [2024-06-28 04:10:15,563 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 111 predicate places. [2024-06-28 04:10:15,563 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 164 transitions, 1965 flow [2024-06-28 04:10:15,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:15,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:10:15,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:10:15,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 04:10:15,564 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:10:15,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:10:15,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1338468145, now seen corresponding path program 2 times [2024-06-28 04:10:15,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:10:15,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743611329] [2024-06-28 04:10:15,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:10:15,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:10:15,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:10:18,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:10:18,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:10:18,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743611329] [2024-06-28 04:10:18,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743611329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:10:18,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:10:18,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:10:18,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552923382] [2024-06-28 04:10:18,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:10:18,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:10:18,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:10:18,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:10:18,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:10:18,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:10:18,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 164 transitions, 1965 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:18,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:10:18,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:10:18,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:10:19,734 INFO L124 PetriNetUnfolderBase]: 1999/3320 cut-off events. [2024-06-28 04:10:19,734 INFO L125 PetriNetUnfolderBase]: For 107256/107289 co-relation queries the response was YES. [2024-06-28 04:10:19,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19149 conditions, 3320 events. 1999/3320 cut-off events. For 107256/107289 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 19388 event pairs, 514 based on Foata normal form. 25/3333 useless extension candidates. Maximal degree in co-relation 19076. Up to 2667 conditions per place. [2024-06-28 04:10:19,759 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 141 selfloop transitions, 55 changer transitions 0/201 dead transitions. [2024-06-28 04:10:19,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 201 transitions, 2511 flow [2024-06-28 04:10:19,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:10:19,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:10:19,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 04:10:19,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 04:10:19,761 INFO L175 Difference]: Start difference. First operand has 154 places, 164 transitions, 1965 flow. Second operand 8 states and 147 transitions. [2024-06-28 04:10:19,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 201 transitions, 2511 flow [2024-06-28 04:10:19,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 201 transitions, 2378 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 04:10:19,878 INFO L231 Difference]: Finished difference. Result has 156 places, 165 transitions, 1988 flow [2024-06-28 04:10:19,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1832, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1988, PETRI_PLACES=156, PETRI_TRANSITIONS=165} [2024-06-28 04:10:19,879 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 113 predicate places. [2024-06-28 04:10:19,879 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 165 transitions, 1988 flow [2024-06-28 04:10:19,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:19,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:10:19,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:10:19,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 04:10:19,879 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:10:19,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:10:19,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1072770865, now seen corresponding path program 3 times [2024-06-28 04:10:19,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:10:19,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852794488] [2024-06-28 04:10:19,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:10:19,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:10:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:10:22,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:10:22,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:10:22,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852794488] [2024-06-28 04:10:22,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852794488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:10:22,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:10:22,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:10:22,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975505241] [2024-06-28 04:10:22,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:10:22,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:10:22,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:10:22,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:10:22,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:10:22,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:10:22,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 165 transitions, 1988 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:22,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:10:22,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:10:22,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:10:24,094 INFO L124 PetriNetUnfolderBase]: 1979/3288 cut-off events. [2024-06-28 04:10:24,094 INFO L125 PetriNetUnfolderBase]: For 102701/102734 co-relation queries the response was YES. [2024-06-28 04:10:24,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18488 conditions, 3288 events. 1979/3288 cut-off events. For 102701/102734 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 19081 event pairs, 449 based on Foata normal form. 25/3301 useless extension candidates. Maximal degree in co-relation 18414. Up to 1935 conditions per place. [2024-06-28 04:10:24,118 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 132 selfloop transitions, 64 changer transitions 0/201 dead transitions. [2024-06-28 04:10:24,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 201 transitions, 2426 flow [2024-06-28 04:10:24,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:10:24,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:10:24,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-28 04:10:24,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43452380952380953 [2024-06-28 04:10:24,119 INFO L175 Difference]: Start difference. First operand has 156 places, 165 transitions, 1988 flow. Second operand 8 states and 146 transitions. [2024-06-28 04:10:24,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 201 transitions, 2426 flow [2024-06-28 04:10:24,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 201 transitions, 2284 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 04:10:24,243 INFO L231 Difference]: Finished difference. Result has 157 places, 164 transitions, 1906 flow [2024-06-28 04:10:24,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1774, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1906, PETRI_PLACES=157, PETRI_TRANSITIONS=164} [2024-06-28 04:10:24,244 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 114 predicate places. [2024-06-28 04:10:24,244 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 164 transitions, 1906 flow [2024-06-28 04:10:24,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:24,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:10:24,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:10:24,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 04:10:24,244 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:10:24,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:10:24,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1601514981, now seen corresponding path program 1 times [2024-06-28 04:10:24,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:10:24,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189801605] [2024-06-28 04:10:24,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:10:24,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:10:24,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:10:25,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:10:25,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:10:25,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189801605] [2024-06-28 04:10:25,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189801605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:10:25,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:10:25,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:10:25,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979180308] [2024-06-28 04:10:25,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:10:25,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:10:25,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:10:25,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:10:25,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:10:25,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:10:25,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 164 transitions, 1906 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:25,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:10:25,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:10:25,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:10:26,910 INFO L124 PetriNetUnfolderBase]: 1984/3290 cut-off events. [2024-06-28 04:10:26,910 INFO L125 PetriNetUnfolderBase]: For 97602/97604 co-relation queries the response was YES. [2024-06-28 04:10:26,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18580 conditions, 3290 events. 1984/3290 cut-off events. For 97602/97604 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 19176 event pairs, 488 based on Foata normal form. 1/3288 useless extension candidates. Maximal degree in co-relation 18505. Up to 3080 conditions per place. [2024-06-28 04:10:26,935 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 164 selfloop transitions, 21 changer transitions 0/190 dead transitions. [2024-06-28 04:10:26,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 190 transitions, 2590 flow [2024-06-28 04:10:26,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:10:26,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:10:26,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2024-06-28 04:10:26,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4126984126984127 [2024-06-28 04:10:26,936 INFO L175 Difference]: Start difference. First operand has 157 places, 164 transitions, 1906 flow. Second operand 6 states and 104 transitions. [2024-06-28 04:10:26,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 190 transitions, 2590 flow [2024-06-28 04:10:27,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 190 transitions, 2391 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-28 04:10:27,044 INFO L231 Difference]: Finished difference. Result has 157 places, 173 transitions, 1897 flow [2024-06-28 04:10:27,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1707, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1897, PETRI_PLACES=157, PETRI_TRANSITIONS=173} [2024-06-28 04:10:27,044 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 114 predicate places. [2024-06-28 04:10:27,044 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 173 transitions, 1897 flow [2024-06-28 04:10:27,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:27,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:10:27,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:10:27,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 04:10:27,045 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:10:27,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:10:27,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1248436251, now seen corresponding path program 2 times [2024-06-28 04:10:27,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:10:27,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843060559] [2024-06-28 04:10:27,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:10:27,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:10:27,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:10:28,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:10:28,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:10:28,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843060559] [2024-06-28 04:10:28,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843060559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:10:28,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:10:28,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:10:28,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105326620] [2024-06-28 04:10:28,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:10:28,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:10:28,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:10:28,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:10:28,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:10:28,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:10:28,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 173 transitions, 1897 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:28,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:10:28,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:10:28,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:10:29,622 INFO L124 PetriNetUnfolderBase]: 1989/3303 cut-off events. [2024-06-28 04:10:29,622 INFO L125 PetriNetUnfolderBase]: For 99954/99956 co-relation queries the response was YES. [2024-06-28 04:10:29,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18453 conditions, 3303 events. 1989/3303 cut-off events. For 99954/99956 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 19274 event pairs, 483 based on Foata normal form. 1/3303 useless extension candidates. Maximal degree in co-relation 18377. Up to 3096 conditions per place. [2024-06-28 04:10:29,648 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 172 selfloop transitions, 19 changer transitions 0/196 dead transitions. [2024-06-28 04:10:29,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 196 transitions, 2452 flow [2024-06-28 04:10:29,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:10:29,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:10:29,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-06-28 04:10:29,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4246031746031746 [2024-06-28 04:10:29,650 INFO L175 Difference]: Start difference. First operand has 157 places, 173 transitions, 1897 flow. Second operand 6 states and 107 transitions. [2024-06-28 04:10:29,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 196 transitions, 2452 flow [2024-06-28 04:10:29,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 196 transitions, 2362 flow, removed 44 selfloop flow, removed 1 redundant places. [2024-06-28 04:10:29,758 INFO L231 Difference]: Finished difference. Result has 163 places, 176 transitions, 1910 flow [2024-06-28 04:10:29,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1813, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1910, PETRI_PLACES=163, PETRI_TRANSITIONS=176} [2024-06-28 04:10:29,758 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 120 predicate places. [2024-06-28 04:10:29,759 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 176 transitions, 1910 flow [2024-06-28 04:10:29,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:29,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:10:29,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:10:29,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 04:10:29,759 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:10:29,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:10:29,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1787116690, now seen corresponding path program 1 times [2024-06-28 04:10:29,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:10:29,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792608372] [2024-06-28 04:10:29,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:10:29,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:10:29,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:10:32,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:10:32,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:10:32,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792608372] [2024-06-28 04:10:32,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792608372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:10:32,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:10:32,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:10:32,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161286232] [2024-06-28 04:10:32,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:10:32,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:10:32,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:10:32,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:10:32,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:10:32,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 04:10:32,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 176 transitions, 1910 flow. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:32,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:10:32,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 04:10:32,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:10:33,525 INFO L124 PetriNetUnfolderBase]: 1908/3204 cut-off events. [2024-06-28 04:10:33,525 INFO L125 PetriNetUnfolderBase]: For 108445/108461 co-relation queries the response was YES. [2024-06-28 04:10:33,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18104 conditions, 3204 events. 1908/3204 cut-off events. For 108445/108461 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 19060 event pairs, 450 based on Foata normal form. 18/3192 useless extension candidates. Maximal degree in co-relation 18024. Up to 2861 conditions per place. [2024-06-28 04:10:33,549 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 152 selfloop transitions, 41 changer transitions 0/210 dead transitions. [2024-06-28 04:10:33,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 210 transitions, 2535 flow [2024-06-28 04:10:33,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:10:33,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:10:33,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 04:10:33,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41369047619047616 [2024-06-28 04:10:33,550 INFO L175 Difference]: Start difference. First operand has 163 places, 176 transitions, 1910 flow. Second operand 8 states and 139 transitions. [2024-06-28 04:10:33,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 210 transitions, 2535 flow [2024-06-28 04:10:33,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 210 transitions, 2501 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 04:10:33,667 INFO L231 Difference]: Finished difference. Result has 167 places, 187 transitions, 2075 flow [2024-06-28 04:10:33,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1876, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2075, PETRI_PLACES=167, PETRI_TRANSITIONS=187} [2024-06-28 04:10:33,668 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 124 predicate places. [2024-06-28 04:10:33,668 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 187 transitions, 2075 flow [2024-06-28 04:10:33,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:33,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:10:33,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:10:33,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 04:10:33,668 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:10:33,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:10:33,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1125283340, now seen corresponding path program 2 times [2024-06-28 04:10:33,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:10:33,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310031716] [2024-06-28 04:10:33,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:10:33,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:10:33,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:10:36,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:10:36,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:10:36,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310031716] [2024-06-28 04:10:36,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310031716] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:10:36,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:10:36,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:10:36,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737111259] [2024-06-28 04:10:36,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:10:36,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:10:36,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:10:36,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:10:36,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:10:36,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 04:10:36,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 187 transitions, 2075 flow. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:36,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:10:36,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 04:10:36,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:10:37,150 INFO L124 PetriNetUnfolderBase]: 1895/3187 cut-off events. [2024-06-28 04:10:37,150 INFO L125 PetriNetUnfolderBase]: For 111515/111526 co-relation queries the response was YES. [2024-06-28 04:10:37,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18396 conditions, 3187 events. 1895/3187 cut-off events. For 111515/111526 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 18947 event pairs, 451 based on Foata normal form. 13/3170 useless extension candidates. Maximal degree in co-relation 18315. Up to 2853 conditions per place. [2024-06-28 04:10:37,181 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 150 selfloop transitions, 39 changer transitions 0/206 dead transitions. [2024-06-28 04:10:37,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 206 transitions, 2505 flow [2024-06-28 04:10:37,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:10:37,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:10:37,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-06-28 04:10:37,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-06-28 04:10:37,182 INFO L175 Difference]: Start difference. First operand has 167 places, 187 transitions, 2075 flow. Second operand 6 states and 111 transitions. [2024-06-28 04:10:37,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 206 transitions, 2505 flow [2024-06-28 04:10:37,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 206 transitions, 2453 flow, removed 22 selfloop flow, removed 2 redundant places. [2024-06-28 04:10:37,314 INFO L231 Difference]: Finished difference. Result has 171 places, 187 transitions, 2116 flow [2024-06-28 04:10:37,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2023, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2116, PETRI_PLACES=171, PETRI_TRANSITIONS=187} [2024-06-28 04:10:37,314 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 128 predicate places. [2024-06-28 04:10:37,314 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 187 transitions, 2116 flow [2024-06-28 04:10:37,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:37,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:10:37,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:10:37,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 04:10:37,315 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:10:37,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:10:37,315 INFO L85 PathProgramCache]: Analyzing trace with hash -46584758, now seen corresponding path program 3 times [2024-06-28 04:10:37,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:10:37,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820781283] [2024-06-28 04:10:37,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:10:37,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:10:37,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:10:39,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:10:39,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:10:39,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820781283] [2024-06-28 04:10:39,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820781283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:10:39,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:10:39,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:10:39,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947939330] [2024-06-28 04:10:39,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:10:39,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:10:39,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:10:39,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:10:39,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:10:39,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 04:10:39,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 187 transitions, 2116 flow. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:39,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:10:39,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 04:10:39,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:10:40,883 INFO L124 PetriNetUnfolderBase]: 1886/3165 cut-off events. [2024-06-28 04:10:40,883 INFO L125 PetriNetUnfolderBase]: For 113740/113757 co-relation queries the response was YES. [2024-06-28 04:10:40,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18332 conditions, 3165 events. 1886/3165 cut-off events. For 113740/113757 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 18790 event pairs, 448 based on Foata normal form. 20/3149 useless extension candidates. Maximal degree in co-relation 18249. Up to 2827 conditions per place. [2024-06-28 04:10:40,907 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 140 selfloop transitions, 49 changer transitions 0/206 dead transitions. [2024-06-28 04:10:40,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 206 transitions, 2606 flow [2024-06-28 04:10:40,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:10:40,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:10:40,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-28 04:10:40,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38392857142857145 [2024-06-28 04:10:40,908 INFO L175 Difference]: Start difference. First operand has 171 places, 187 transitions, 2116 flow. Second operand 8 states and 129 transitions. [2024-06-28 04:10:40,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 206 transitions, 2606 flow [2024-06-28 04:10:41,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 206 transitions, 2514 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-28 04:10:41,033 INFO L231 Difference]: Finished difference. Result has 174 places, 192 transitions, 2197 flow [2024-06-28 04:10:41,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2028, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2197, PETRI_PLACES=174, PETRI_TRANSITIONS=192} [2024-06-28 04:10:41,034 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 131 predicate places. [2024-06-28 04:10:41,034 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 192 transitions, 2197 flow [2024-06-28 04:10:41,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:41,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:10:41,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:10:41,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 04:10:41,035 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:10:41,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:10:41,035 INFO L85 PathProgramCache]: Analyzing trace with hash 969653042, now seen corresponding path program 1 times [2024-06-28 04:10:41,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:10:41,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734961536] [2024-06-28 04:10:41,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:10:41,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:10:41,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:10:42,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:10:42,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:10:42,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734961536] [2024-06-28 04:10:42,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734961536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:10:42,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:10:42,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:10:42,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826164476] [2024-06-28 04:10:42,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:10:42,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:10:42,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:10:42,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:10:42,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:10:42,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:10:42,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 192 transitions, 2197 flow. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:42,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:10:42,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:10:42,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:10:43,818 INFO L124 PetriNetUnfolderBase]: 2032/3377 cut-off events. [2024-06-28 04:10:43,818 INFO L125 PetriNetUnfolderBase]: For 112489/112496 co-relation queries the response was YES. [2024-06-28 04:10:43,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19566 conditions, 3377 events. 2032/3377 cut-off events. For 112489/112496 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 19892 event pairs, 569 based on Foata normal form. 4/3379 useless extension candidates. Maximal degree in co-relation 19482. Up to 3147 conditions per place. [2024-06-28 04:10:43,847 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 180 selfloop transitions, 25 changer transitions 0/210 dead transitions. [2024-06-28 04:10:43,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 210 transitions, 2770 flow [2024-06-28 04:10:43,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:10:43,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:10:43,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2024-06-28 04:10:43,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4087301587301587 [2024-06-28 04:10:43,848 INFO L175 Difference]: Start difference. First operand has 174 places, 192 transitions, 2197 flow. Second operand 6 states and 103 transitions. [2024-06-28 04:10:43,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 210 transitions, 2770 flow [2024-06-28 04:10:43,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 210 transitions, 2665 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-28 04:10:43,976 INFO L231 Difference]: Finished difference. Result has 176 places, 195 transitions, 2189 flow [2024-06-28 04:10:43,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2092, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2189, PETRI_PLACES=176, PETRI_TRANSITIONS=195} [2024-06-28 04:10:43,977 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 133 predicate places. [2024-06-28 04:10:43,977 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 195 transitions, 2189 flow [2024-06-28 04:10:43,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:43,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:10:43,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:10:43,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 04:10:43,977 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:10:43,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:10:43,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1876006256, now seen corresponding path program 2 times [2024-06-28 04:10:43,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:10:43,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898214322] [2024-06-28 04:10:43,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:10:43,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:10:43,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:10:45,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:10:45,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:10:45,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898214322] [2024-06-28 04:10:45,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898214322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:10:45,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:10:45,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:10:45,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721118399] [2024-06-28 04:10:45,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:10:45,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:10:45,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:10:45,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:10:45,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:10:45,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:10:45,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 195 transitions, 2189 flow. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:45,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:10:45,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:10:45,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:10:47,305 INFO L124 PetriNetUnfolderBase]: 2029/3368 cut-off events. [2024-06-28 04:10:47,305 INFO L125 PetriNetUnfolderBase]: For 115521/115525 co-relation queries the response was YES. [2024-06-28 04:10:47,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19462 conditions, 3368 events. 2029/3368 cut-off events. For 115521/115525 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 19787 event pairs, 569 based on Foata normal form. 2/3367 useless extension candidates. Maximal degree in co-relation 19377. Up to 3144 conditions per place. [2024-06-28 04:10:47,334 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 179 selfloop transitions, 27 changer transitions 0/211 dead transitions. [2024-06-28 04:10:47,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 211 transitions, 2727 flow [2024-06-28 04:10:47,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:10:47,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:10:47,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-06-28 04:10:47,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391156462585034 [2024-06-28 04:10:47,335 INFO L175 Difference]: Start difference. First operand has 176 places, 195 transitions, 2189 flow. Second operand 7 states and 115 transitions. [2024-06-28 04:10:47,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 211 transitions, 2727 flow [2024-06-28 04:10:47,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 211 transitions, 2643 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-28 04:10:47,477 INFO L231 Difference]: Finished difference. Result has 179 places, 195 transitions, 2165 flow [2024-06-28 04:10:47,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2105, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2165, PETRI_PLACES=179, PETRI_TRANSITIONS=195} [2024-06-28 04:10:47,477 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 136 predicate places. [2024-06-28 04:10:47,478 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 195 transitions, 2165 flow [2024-06-28 04:10:47,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:47,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:10:47,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:10:47,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 04:10:47,478 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:10:47,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:10:47,479 INFO L85 PathProgramCache]: Analyzing trace with hash -579652016, now seen corresponding path program 1 times [2024-06-28 04:10:47,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:10:47,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052366972] [2024-06-28 04:10:47,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:10:47,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:10:47,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:10:49,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:10:49,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:10:49,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052366972] [2024-06-28 04:10:49,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052366972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:10:49,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:10:49,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:10:49,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201227240] [2024-06-28 04:10:49,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:10:49,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:10:49,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:10:49,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:10:49,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:10:49,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:10:49,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 195 transitions, 2165 flow. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:49,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:10:49,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:10:49,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:10:50,723 INFO L124 PetriNetUnfolderBase]: 2039/3381 cut-off events. [2024-06-28 04:10:50,723 INFO L125 PetriNetUnfolderBase]: For 121160/121164 co-relation queries the response was YES. [2024-06-28 04:10:50,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19654 conditions, 3381 events. 2039/3381 cut-off events. For 121160/121164 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 19814 event pairs, 566 based on Foata normal form. 3/3381 useless extension candidates. Maximal degree in co-relation 19569. Up to 3109 conditions per place. [2024-06-28 04:10:50,751 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 185 selfloop transitions, 34 changer transitions 0/224 dead transitions. [2024-06-28 04:10:50,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 224 transitions, 2937 flow [2024-06-28 04:10:50,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:10:50,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:10:50,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-28 04:10:50,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41156462585034015 [2024-06-28 04:10:50,752 INFO L175 Difference]: Start difference. First operand has 179 places, 195 transitions, 2165 flow. Second operand 7 states and 121 transitions. [2024-06-28 04:10:50,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 224 transitions, 2937 flow [2024-06-28 04:10:50,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 224 transitions, 2845 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 04:10:50,896 INFO L231 Difference]: Finished difference. Result has 180 places, 204 transitions, 2291 flow [2024-06-28 04:10:50,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2073, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2291, PETRI_PLACES=180, PETRI_TRANSITIONS=204} [2024-06-28 04:10:50,897 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 137 predicate places. [2024-06-28 04:10:50,897 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 204 transitions, 2291 flow [2024-06-28 04:10:50,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:50,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:10:50,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:10:50,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 04:10:50,897 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:10:50,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:10:50,898 INFO L85 PathProgramCache]: Analyzing trace with hash -46578806, now seen corresponding path program 2 times [2024-06-28 04:10:50,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:10:50,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576326173] [2024-06-28 04:10:50,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:10:50,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:10:50,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:10:52,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:10:52,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:10:52,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576326173] [2024-06-28 04:10:52,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576326173] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:10:52,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:10:52,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:10:52,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146626201] [2024-06-28 04:10:52,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:10:52,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:10:52,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:10:52,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:10:52,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:10:52,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:10:52,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 204 transitions, 2291 flow. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:52,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:10:52,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:10:52,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:10:54,170 INFO L124 PetriNetUnfolderBase]: 2065/3422 cut-off events. [2024-06-28 04:10:54,171 INFO L125 PetriNetUnfolderBase]: For 129800/129804 co-relation queries the response was YES. [2024-06-28 04:10:54,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20507 conditions, 3422 events. 2065/3422 cut-off events. For 129800/129804 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 20069 event pairs, 557 based on Foata normal form. 3/3424 useless extension candidates. Maximal degree in co-relation 20421. Up to 3160 conditions per place. [2024-06-28 04:10:54,202 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 198 selfloop transitions, 28 changer transitions 0/231 dead transitions. [2024-06-28 04:10:54,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 231 transitions, 3057 flow [2024-06-28 04:10:54,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:10:54,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:10:54,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-28 04:10:54,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-28 04:10:54,203 INFO L175 Difference]: Start difference. First operand has 180 places, 204 transitions, 2291 flow. Second operand 8 states and 132 transitions. [2024-06-28 04:10:54,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 231 transitions, 3057 flow [2024-06-28 04:10:54,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 231 transitions, 2997 flow, removed 27 selfloop flow, removed 2 redundant places. [2024-06-28 04:10:54,396 INFO L231 Difference]: Finished difference. Result has 187 places, 210 transitions, 2395 flow [2024-06-28 04:10:54,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2239, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2395, PETRI_PLACES=187, PETRI_TRANSITIONS=210} [2024-06-28 04:10:54,397 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 144 predicate places. [2024-06-28 04:10:54,397 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 210 transitions, 2395 flow [2024-06-28 04:10:54,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:54,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:10:54,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:10:54,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 04:10:54,397 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:10:54,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:10:54,398 INFO L85 PathProgramCache]: Analyzing trace with hash -46816142, now seen corresponding path program 3 times [2024-06-28 04:10:54,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:10:54,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934576309] [2024-06-28 04:10:54,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:10:54,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:10:54,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:10:56,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:10:56,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:10:56,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934576309] [2024-06-28 04:10:56,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934576309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:10:56,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:10:56,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 04:10:56,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508612041] [2024-06-28 04:10:56,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:10:56,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 04:10:56,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:10:56,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 04:10:56,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 04:10:56,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:10:56,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 210 transitions, 2395 flow. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:56,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:10:56,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:10:56,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:10:57,155 INFO L124 PetriNetUnfolderBase]: 2062/3418 cut-off events. [2024-06-28 04:10:57,156 INFO L125 PetriNetUnfolderBase]: For 132419/132423 co-relation queries the response was YES. [2024-06-28 04:10:57,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20429 conditions, 3418 events. 2062/3418 cut-off events. For 132419/132423 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 20061 event pairs, 564 based on Foata normal form. 2/3419 useless extension candidates. Maximal degree in co-relation 20339. Up to 3200 conditions per place. [2024-06-28 04:10:57,182 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 204 selfloop transitions, 19 changer transitions 0/228 dead transitions. [2024-06-28 04:10:57,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 228 transitions, 2891 flow [2024-06-28 04:10:57,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:10:57,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:10:57,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-28 04:10:57,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42063492063492064 [2024-06-28 04:10:57,183 INFO L175 Difference]: Start difference. First operand has 187 places, 210 transitions, 2395 flow. Second operand 6 states and 106 transitions. [2024-06-28 04:10:57,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 228 transitions, 2891 flow [2024-06-28 04:10:57,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 228 transitions, 2797 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-28 04:10:57,358 INFO L231 Difference]: Finished difference. Result has 188 places, 210 transitions, 2349 flow [2024-06-28 04:10:57,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2301, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2349, PETRI_PLACES=188, PETRI_TRANSITIONS=210} [2024-06-28 04:10:57,358 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 145 predicate places. [2024-06-28 04:10:57,358 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 210 transitions, 2349 flow [2024-06-28 04:10:57,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:57,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:10:57,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:10:57,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 04:10:57,358 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:10:57,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:10:57,359 INFO L85 PathProgramCache]: Analyzing trace with hash -46815956, now seen corresponding path program 3 times [2024-06-28 04:10:57,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:10:57,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899896463] [2024-06-28 04:10:57,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:10:57,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:10:57,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:10:59,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:10:59,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:10:59,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899896463] [2024-06-28 04:10:59,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899896463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:10:59,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:10:59,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:10:59,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347461096] [2024-06-28 04:10:59,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:10:59,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:10:59,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:10:59,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:10:59,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:10:59,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:10:59,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 210 transitions, 2349 flow. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:10:59,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:10:59,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:10:59,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:11:00,373 INFO L124 PetriNetUnfolderBase]: 2056/3414 cut-off events. [2024-06-28 04:11:00,373 INFO L125 PetriNetUnfolderBase]: For 136047/136051 co-relation queries the response was YES. [2024-06-28 04:11:00,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20309 conditions, 3414 events. 2056/3414 cut-off events. For 136047/136051 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 20082 event pairs, 558 based on Foata normal form. 3/3416 useless extension candidates. Maximal degree in co-relation 20218. Up to 3155 conditions per place. [2024-06-28 04:11:00,402 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 200 selfloop transitions, 29 changer transitions 0/234 dead transitions. [2024-06-28 04:11:00,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 234 transitions, 2961 flow [2024-06-28 04:11:00,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:11:00,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:11:00,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-28 04:11:00,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 04:11:00,403 INFO L175 Difference]: Start difference. First operand has 188 places, 210 transitions, 2349 flow. Second operand 7 states and 126 transitions. [2024-06-28 04:11:00,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 234 transitions, 2961 flow [2024-06-28 04:11:00,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 234 transitions, 2887 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 04:11:00,618 INFO L231 Difference]: Finished difference. Result has 189 places, 210 transitions, 2341 flow [2024-06-28 04:11:00,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2277, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2341, PETRI_PLACES=189, PETRI_TRANSITIONS=210} [2024-06-28 04:11:00,618 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 146 predicate places. [2024-06-28 04:11:00,618 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 210 transitions, 2341 flow [2024-06-28 04:11:00,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:00,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:11:00,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:11:00,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 04:11:00,619 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:11:00,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:11:00,619 INFO L85 PathProgramCache]: Analyzing trace with hash -46569878, now seen corresponding path program 1 times [2024-06-28 04:11:00,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:11:00,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617712339] [2024-06-28 04:11:00,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:11:00,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:11:00,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:11:03,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:11:03,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:11:03,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617712339] [2024-06-28 04:11:03,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617712339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:11:03,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:11:03,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:11:03,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544261919] [2024-06-28 04:11:03,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:11:03,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:11:03,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:11:03,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:11:03,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:11:03,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 04:11:03,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 210 transitions, 2341 flow. Second operand has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 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) [2024-06-28 04:11:03,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:11:03,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 04:11:03,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:11:04,533 INFO L124 PetriNetUnfolderBase]: 1908/3215 cut-off events. [2024-06-28 04:11:04,533 INFO L125 PetriNetUnfolderBase]: For 133379/133392 co-relation queries the response was YES. [2024-06-28 04:11:04,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19352 conditions, 3215 events. 1908/3215 cut-off events. For 133379/133392 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 19161 event pairs, 532 based on Foata normal form. 12/3200 useless extension candidates. Maximal degree in co-relation 19261. Up to 2946 conditions per place. [2024-06-28 04:11:04,565 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 195 selfloop transitions, 12 changer transitions 0/224 dead transitions. [2024-06-28 04:11:04,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 224 transitions, 2811 flow [2024-06-28 04:11:04,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:11:04,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:11:04,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 102 transitions. [2024-06-28 04:11:04,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-28 04:11:04,566 INFO L175 Difference]: Start difference. First operand has 189 places, 210 transitions, 2341 flow. Second operand 6 states and 102 transitions. [2024-06-28 04:11:04,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 224 transitions, 2811 flow [2024-06-28 04:11:04,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 224 transitions, 2747 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 04:11:04,764 INFO L231 Difference]: Finished difference. Result has 190 places, 212 transitions, 2336 flow [2024-06-28 04:11:04,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2277, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2336, PETRI_PLACES=190, PETRI_TRANSITIONS=212} [2024-06-28 04:11:04,765 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 147 predicate places. [2024-06-28 04:11:04,765 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 212 transitions, 2336 flow [2024-06-28 04:11:04,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.88888888888889) internal successors, (98), 9 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) [2024-06-28 04:11:04,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:11:04,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:11:04,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 04:11:04,766 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:11:04,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:11:04,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1896111180, now seen corresponding path program 1 times [2024-06-28 04:11:04,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:11:04,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60158160] [2024-06-28 04:11:04,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:11:04,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:11:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:11:07,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:11:07,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:11:07,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60158160] [2024-06-28 04:11:07,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60158160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:11:07,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:11:07,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:11:07,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122796552] [2024-06-28 04:11:07,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:11:07,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:11:07,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:11:07,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:11:07,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:11:07,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:11:07,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 212 transitions, 2336 flow. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:07,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:11:07,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:11:07,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:11:08,844 INFO L124 PetriNetUnfolderBase]: 2064/3425 cut-off events. [2024-06-28 04:11:08,844 INFO L125 PetriNetUnfolderBase]: For 139401/139407 co-relation queries the response was YES. [2024-06-28 04:11:08,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20488 conditions, 3425 events. 2064/3425 cut-off events. For 139401/139407 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 20126 event pairs, 557 based on Foata normal form. 7/3428 useless extension candidates. Maximal degree in co-relation 20396. Up to 3064 conditions per place. [2024-06-28 04:11:08,875 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 193 selfloop transitions, 50 changer transitions 0/248 dead transitions. [2024-06-28 04:11:08,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 248 transitions, 3255 flow [2024-06-28 04:11:08,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:11:08,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:11:08,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-28 04:11:08,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43537414965986393 [2024-06-28 04:11:08,876 INFO L175 Difference]: Start difference. First operand has 190 places, 212 transitions, 2336 flow. Second operand 7 states and 128 transitions. [2024-06-28 04:11:08,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 248 transitions, 3255 flow [2024-06-28 04:11:09,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 248 transitions, 3210 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 04:11:09,063 INFO L231 Difference]: Finished difference. Result has 195 places, 221 transitions, 2590 flow [2024-06-28 04:11:09,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2291, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2590, PETRI_PLACES=195, PETRI_TRANSITIONS=221} [2024-06-28 04:11:09,064 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 152 predicate places. [2024-06-28 04:11:09,064 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 221 transitions, 2590 flow [2024-06-28 04:11:09,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:09,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:11:09,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:11:09,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 04:11:09,064 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:11:09,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:11:09,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1203637374, now seen corresponding path program 2 times [2024-06-28 04:11:09,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:11:09,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249951926] [2024-06-28 04:11:09,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:11:09,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:11:09,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:11:11,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:11:11,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:11:11,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249951926] [2024-06-28 04:11:11,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249951926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:11:11,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:11:11,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:11:11,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500045725] [2024-06-28 04:11:11,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:11:11,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:11:11,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:11:11,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:11:11,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:11:11,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:11:11,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 221 transitions, 2590 flow. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:11,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:11:11,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:11:11,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:11:13,116 INFO L124 PetriNetUnfolderBase]: 2087/3457 cut-off events. [2024-06-28 04:11:13,116 INFO L125 PetriNetUnfolderBase]: For 148487/148491 co-relation queries the response was YES. [2024-06-28 04:11:13,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21540 conditions, 3457 events. 2087/3457 cut-off events. For 148487/148491 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 20263 event pairs, 470 based on Foata normal form. 2/3458 useless extension candidates. Maximal degree in co-relation 21445. Up to 3148 conditions per place. [2024-06-28 04:11:13,150 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 195 selfloop transitions, 54 changer transitions 0/254 dead transitions. [2024-06-28 04:11:13,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 254 transitions, 3427 flow [2024-06-28 04:11:13,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:11:13,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:11:13,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-28 04:11:13,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39880952380952384 [2024-06-28 04:11:13,151 INFO L175 Difference]: Start difference. First operand has 195 places, 221 transitions, 2590 flow. Second operand 8 states and 134 transitions. [2024-06-28 04:11:13,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 254 transitions, 3427 flow [2024-06-28 04:11:13,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 254 transitions, 3323 flow, removed 41 selfloop flow, removed 2 redundant places. [2024-06-28 04:11:13,357 INFO L231 Difference]: Finished difference. Result has 202 places, 233 transitions, 2825 flow [2024-06-28 04:11:13,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2502, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2825, PETRI_PLACES=202, PETRI_TRANSITIONS=233} [2024-06-28 04:11:13,358 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 159 predicate places. [2024-06-28 04:11:13,358 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 233 transitions, 2825 flow [2024-06-28 04:11:13,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:13,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:11:13,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:11:13,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 04:11:13,358 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:11:13,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:11:13,358 INFO L85 PathProgramCache]: Analyzing trace with hash -13241470, now seen corresponding path program 3 times [2024-06-28 04:11:13,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:11:13,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281758905] [2024-06-28 04:11:13,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:11:13,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:11:13,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:11:15,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:11:15,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:11:15,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281758905] [2024-06-28 04:11:15,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281758905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:11:15,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:11:15,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:11:15,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236252936] [2024-06-28 04:11:15,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:11:15,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:11:15,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:11:15,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:11:15,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:11:16,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:11:16,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 233 transitions, 2825 flow. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:16,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:11:16,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:11:16,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:11:17,277 INFO L124 PetriNetUnfolderBase]: 2092/3463 cut-off events. [2024-06-28 04:11:17,277 INFO L125 PetriNetUnfolderBase]: For 154939/154951 co-relation queries the response was YES. [2024-06-28 04:11:17,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21641 conditions, 3463 events. 2092/3463 cut-off events. For 154939/154951 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 20388 event pairs, 574 based on Foata normal form. 11/3466 useless extension candidates. Maximal degree in co-relation 21543. Up to 3095 conditions per place. [2024-06-28 04:11:17,310 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 196 selfloop transitions, 62 changer transitions 0/263 dead transitions. [2024-06-28 04:11:17,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 263 transitions, 3840 flow [2024-06-28 04:11:17,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:11:17,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:11:17,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-28 04:11:17,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4217687074829932 [2024-06-28 04:11:17,312 INFO L175 Difference]: Start difference. First operand has 202 places, 233 transitions, 2825 flow. Second operand 7 states and 124 transitions. [2024-06-28 04:11:17,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 263 transitions, 3840 flow [2024-06-28 04:11:17,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 263 transitions, 3700 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-28 04:11:17,493 INFO L231 Difference]: Finished difference. Result has 204 places, 239 transitions, 2949 flow [2024-06-28 04:11:17,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2685, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2949, PETRI_PLACES=204, PETRI_TRANSITIONS=239} [2024-06-28 04:11:17,494 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 161 predicate places. [2024-06-28 04:11:17,494 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 239 transitions, 2949 flow [2024-06-28 04:11:17,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:17,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:11:17,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:11:17,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 04:11:17,494 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:11:17,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:11:17,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1813630, now seen corresponding path program 4 times [2024-06-28 04:11:17,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:11:17,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844535467] [2024-06-28 04:11:17,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:11:17,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:11:17,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:11:19,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:11:19,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:11:19,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844535467] [2024-06-28 04:11:19,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844535467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:11:19,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:11:19,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:11:19,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521626945] [2024-06-28 04:11:19,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:11:19,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:11:19,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:11:19,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:11:19,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:11:19,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:11:19,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 239 transitions, 2949 flow. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:19,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:11:19,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:11:19,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:11:21,172 INFO L124 PetriNetUnfolderBase]: 2097/3470 cut-off events. [2024-06-28 04:11:21,172 INFO L125 PetriNetUnfolderBase]: For 161419/161431 co-relation queries the response was YES. [2024-06-28 04:11:21,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21899 conditions, 3470 events. 2097/3470 cut-off events. For 161419/161431 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 20375 event pairs, 574 based on Foata normal form. 11/3473 useless extension candidates. Maximal degree in co-relation 21800. Up to 3099 conditions per place. [2024-06-28 04:11:21,206 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 191 selfloop transitions, 65 changer transitions 0/261 dead transitions. [2024-06-28 04:11:21,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 261 transitions, 3792 flow [2024-06-28 04:11:21,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:11:21,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:11:21,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-28 04:11:21,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-28 04:11:21,208 INFO L175 Difference]: Start difference. First operand has 204 places, 239 transitions, 2949 flow. Second operand 7 states and 119 transitions. [2024-06-28 04:11:21,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 261 transitions, 3792 flow [2024-06-28 04:11:21,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 261 transitions, 3658 flow, removed 46 selfloop flow, removed 3 redundant places. [2024-06-28 04:11:21,434 INFO L231 Difference]: Finished difference. Result has 208 places, 242 transitions, 3023 flow [2024-06-28 04:11:21,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2833, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3023, PETRI_PLACES=208, PETRI_TRANSITIONS=242} [2024-06-28 04:11:21,435 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 165 predicate places. [2024-06-28 04:11:21,435 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 242 transitions, 3023 flow [2024-06-28 04:11:21,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:21,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:11:21,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:11:21,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 04:11:21,436 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:11:21,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:11:21,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1451513722, now seen corresponding path program 5 times [2024-06-28 04:11:21,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:11:21,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745383295] [2024-06-28 04:11:21,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:11:21,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:11:21,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:11:24,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:11:24,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:11:24,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745383295] [2024-06-28 04:11:24,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745383295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:11:24,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:11:24,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:11:24,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274465957] [2024-06-28 04:11:24,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:11:24,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:11:24,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:11:24,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:11:24,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:11:24,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:11:24,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 242 transitions, 3023 flow. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:24,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:11:24,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:11:24,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:11:25,558 INFO L124 PetriNetUnfolderBase]: 2102/3480 cut-off events. [2024-06-28 04:11:25,558 INFO L125 PetriNetUnfolderBase]: For 164835/164839 co-relation queries the response was YES. [2024-06-28 04:11:25,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22080 conditions, 3480 events. 2102/3480 cut-off events. For 164835/164839 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 20391 event pairs, 473 based on Foata normal form. 2/3481 useless extension candidates. Maximal degree in co-relation 21979. Up to 3013 conditions per place. [2024-06-28 04:11:25,590 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 173 selfloop transitions, 99 changer transitions 0/277 dead transitions. [2024-06-28 04:11:25,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 277 transitions, 3816 flow [2024-06-28 04:11:25,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:11:25,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:11:25,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 04:11:25,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-28 04:11:25,592 INFO L175 Difference]: Start difference. First operand has 208 places, 242 transitions, 3023 flow. Second operand 8 states and 150 transitions. [2024-06-28 04:11:25,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 277 transitions, 3816 flow [2024-06-28 04:11:25,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 277 transitions, 3638 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-28 04:11:25,794 INFO L231 Difference]: Finished difference. Result has 213 places, 245 transitions, 3189 flow [2024-06-28 04:11:25,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2853, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3189, PETRI_PLACES=213, PETRI_TRANSITIONS=245} [2024-06-28 04:11:25,795 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 170 predicate places. [2024-06-28 04:11:25,795 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 245 transitions, 3189 flow [2024-06-28 04:11:25,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:25,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:11:25,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:11:25,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 04:11:25,795 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:11:25,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:11:25,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1451306332, now seen corresponding path program 6 times [2024-06-28 04:11:25,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:11:25,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075672360] [2024-06-28 04:11:25,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:11:25,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:11:25,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:11:28,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:11:28,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:11:28,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075672360] [2024-06-28 04:11:28,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075672360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:11:28,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:11:28,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:11:28,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318100484] [2024-06-28 04:11:28,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:11:28,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:11:28,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:11:28,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:11:28,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:11:28,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:11:28,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 245 transitions, 3189 flow. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:28,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:11:28,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:11:28,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:11:29,242 INFO L124 PetriNetUnfolderBase]: 2099/3474 cut-off events. [2024-06-28 04:11:29,242 INFO L125 PetriNetUnfolderBase]: For 170903/170911 co-relation queries the response was YES. [2024-06-28 04:11:29,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22356 conditions, 3474 events. 2099/3474 cut-off events. For 170903/170911 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 20308 event pairs, 491 based on Foata normal form. 3/3470 useless extension candidates. Maximal degree in co-relation 22253. Up to 3011 conditions per place. [2024-06-28 04:11:29,275 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 165 selfloop transitions, 99 changer transitions 0/269 dead transitions. [2024-06-28 04:11:29,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 269 transitions, 3887 flow [2024-06-28 04:11:29,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:11:29,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:11:29,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-28 04:11:29,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421768707482993 [2024-06-28 04:11:29,277 INFO L175 Difference]: Start difference. First operand has 213 places, 245 transitions, 3189 flow. Second operand 7 states and 130 transitions. [2024-06-28 04:11:29,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 269 transitions, 3887 flow [2024-06-28 04:11:29,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 269 transitions, 3688 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-28 04:11:29,500 INFO L231 Difference]: Finished difference. Result has 214 places, 245 transitions, 3200 flow [2024-06-28 04:11:29,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2992, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3200, PETRI_PLACES=214, PETRI_TRANSITIONS=245} [2024-06-28 04:11:29,501 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 171 predicate places. [2024-06-28 04:11:29,501 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 245 transitions, 3200 flow [2024-06-28 04:11:29,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:29,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:11:29,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:11:29,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 04:11:29,501 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:11:29,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:11:29,501 INFO L85 PathProgramCache]: Analyzing trace with hash 2103129831, now seen corresponding path program 1 times [2024-06-28 04:11:29,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:11:29,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301032467] [2024-06-28 04:11:29,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:11:29,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:11:29,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:11:31,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:11:31,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:11:31,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301032467] [2024-06-28 04:11:31,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301032467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:11:31,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:11:31,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:11:31,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77423275] [2024-06-28 04:11:31,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:11:31,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:11:31,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:11:31,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:11:31,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:11:31,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:11:31,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 245 transitions, 3200 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:31,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:11:31,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:11:31,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:11:32,785 INFO L124 PetriNetUnfolderBase]: 2109/3497 cut-off events. [2024-06-28 04:11:32,785 INFO L125 PetriNetUnfolderBase]: For 172870/172877 co-relation queries the response was YES. [2024-06-28 04:11:32,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22466 conditions, 3497 events. 2109/3497 cut-off events. For 172870/172877 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 20630 event pairs, 569 based on Foata normal form. 5/3500 useless extension candidates. Maximal degree in co-relation 22362. Up to 3195 conditions per place. [2024-06-28 04:11:32,818 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 222 selfloop transitions, 40 changer transitions 0/267 dead transitions. [2024-06-28 04:11:32,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 267 transitions, 3913 flow [2024-06-28 04:11:32,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:11:32,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:11:32,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-28 04:11:32,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40816326530612246 [2024-06-28 04:11:32,819 INFO L175 Difference]: Start difference. First operand has 214 places, 245 transitions, 3200 flow. Second operand 7 states and 120 transitions. [2024-06-28 04:11:32,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 267 transitions, 3913 flow [2024-06-28 04:11:33,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 267 transitions, 3728 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 04:11:33,087 INFO L231 Difference]: Finished difference. Result has 215 places, 248 transitions, 3138 flow [2024-06-28 04:11:33,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3015, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3138, PETRI_PLACES=215, PETRI_TRANSITIONS=248} [2024-06-28 04:11:33,088 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 172 predicate places. [2024-06-28 04:11:33,088 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 248 transitions, 3138 flow [2024-06-28 04:11:33,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:33,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:11:33,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:11:33,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 04:11:33,088 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:11:33,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:11:33,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1973350369, now seen corresponding path program 2 times [2024-06-28 04:11:33,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:11:33,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653345122] [2024-06-28 04:11:33,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:11:33,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:11:33,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:11:35,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:11:35,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:11:35,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653345122] [2024-06-28 04:11:35,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653345122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:11:35,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:11:35,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:11:35,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933204393] [2024-06-28 04:11:35,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:11:35,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:11:35,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:11:35,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:11:35,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:11:35,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:11:35,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 248 transitions, 3138 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:35,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:11:35,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:11:35,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:11:36,980 INFO L124 PetriNetUnfolderBase]: 2119/3506 cut-off events. [2024-06-28 04:11:36,980 INFO L125 PetriNetUnfolderBase]: For 178355/178359 co-relation queries the response was YES. [2024-06-28 04:11:37,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22511 conditions, 3506 events. 2119/3506 cut-off events. For 178355/178359 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 20631 event pairs, 566 based on Foata normal form. 3/3506 useless extension candidates. Maximal degree in co-relation 22406. Up to 3205 conditions per place. [2024-06-28 04:11:37,017 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 223 selfloop transitions, 46 changer transitions 0/274 dead transitions. [2024-06-28 04:11:37,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 274 transitions, 3987 flow [2024-06-28 04:11:37,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:11:37,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:11:37,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 04:11:37,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40773809523809523 [2024-06-28 04:11:37,018 INFO L175 Difference]: Start difference. First operand has 215 places, 248 transitions, 3138 flow. Second operand 8 states and 137 transitions. [2024-06-28 04:11:37,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 274 transitions, 3987 flow [2024-06-28 04:11:37,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 274 transitions, 3867 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 04:11:37,336 INFO L231 Difference]: Finished difference. Result has 218 places, 251 transitions, 3159 flow [2024-06-28 04:11:37,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3026, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3159, PETRI_PLACES=218, PETRI_TRANSITIONS=251} [2024-06-28 04:11:37,337 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 175 predicate places. [2024-06-28 04:11:37,337 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 251 transitions, 3159 flow [2024-06-28 04:11:37,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:37,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:11:37,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:11:37,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 04:11:37,337 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:11:37,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:11:37,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1799959, now seen corresponding path program 3 times [2024-06-28 04:11:37,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:11:37,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225071440] [2024-06-28 04:11:37,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:11:37,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:11:37,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:11:39,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:11:39,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:11:39,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225071440] [2024-06-28 04:11:39,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225071440] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:11:39,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:11:39,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:11:39,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506892118] [2024-06-28 04:11:39,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:11:39,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:11:39,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:11:39,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:11:39,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:11:39,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:11:39,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 251 transitions, 3159 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:39,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:11:39,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:11:39,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:11:41,622 INFO L124 PetriNetUnfolderBase]: 2113/3494 cut-off events. [2024-06-28 04:11:41,622 INFO L125 PetriNetUnfolderBase]: For 181091/181095 co-relation queries the response was YES. [2024-06-28 04:11:41,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22445 conditions, 3494 events. 2113/3494 cut-off events. For 181091/181095 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 20522 event pairs, 566 based on Foata normal form. 3/3494 useless extension candidates. Maximal degree in co-relation 22340. Up to 3200 conditions per place. [2024-06-28 04:11:41,653 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 223 selfloop transitions, 47 changer transitions 0/275 dead transitions. [2024-06-28 04:11:41,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 275 transitions, 3865 flow [2024-06-28 04:11:41,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:11:41,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:11:41,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-28 04:11:41,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3761904761904762 [2024-06-28 04:11:41,654 INFO L175 Difference]: Start difference. First operand has 218 places, 251 transitions, 3159 flow. Second operand 10 states and 158 transitions. [2024-06-28 04:11:41,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 275 transitions, 3865 flow [2024-06-28 04:11:41,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 275 transitions, 3719 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-28 04:11:41,915 INFO L231 Difference]: Finished difference. Result has 221 places, 251 transitions, 3113 flow [2024-06-28 04:11:41,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3013, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3113, PETRI_PLACES=221, PETRI_TRANSITIONS=251} [2024-06-28 04:11:41,915 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 178 predicate places. [2024-06-28 04:11:41,915 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 251 transitions, 3113 flow [2024-06-28 04:11:41,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:41,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:11:41,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:11:41,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 04:11:41,916 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:11:41,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:11:41,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1451298241, now seen corresponding path program 4 times [2024-06-28 04:11:41,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:11:41,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256142865] [2024-06-28 04:11:41,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:11:41,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:11:41,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:11:43,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:11:43,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:11:43,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256142865] [2024-06-28 04:11:43,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256142865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:11:43,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:11:43,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:11:43,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902591381] [2024-06-28 04:11:43,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:11:43,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:11:43,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:11:43,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:11:43,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:11:43,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:11:43,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 251 transitions, 3113 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:43,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:11:43,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:11:43,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:11:44,948 INFO L124 PetriNetUnfolderBase]: 2123/3518 cut-off events. [2024-06-28 04:11:44,949 INFO L125 PetriNetUnfolderBase]: For 186354/186358 co-relation queries the response was YES. [2024-06-28 04:11:44,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22555 conditions, 3518 events. 2123/3518 cut-off events. For 186354/186358 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 20738 event pairs, 556 based on Foata normal form. 3/3520 useless extension candidates. Maximal degree in co-relation 22450. Up to 3245 conditions per place. [2024-06-28 04:11:44,980 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 241 selfloop transitions, 32 changer transitions 0/278 dead transitions. [2024-06-28 04:11:44,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 278 transitions, 3865 flow [2024-06-28 04:11:44,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:11:44,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:11:44,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-28 04:11:44,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 04:11:44,981 INFO L175 Difference]: Start difference. First operand has 221 places, 251 transitions, 3113 flow. Second operand 7 states and 126 transitions. [2024-06-28 04:11:44,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 278 transitions, 3865 flow [2024-06-28 04:11:45,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 278 transitions, 3737 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 04:11:45,239 INFO L231 Difference]: Finished difference. Result has 218 places, 254 transitions, 3089 flow [2024-06-28 04:11:45,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2991, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3089, PETRI_PLACES=218, PETRI_TRANSITIONS=254} [2024-06-28 04:11:45,240 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 175 predicate places. [2024-06-28 04:11:45,240 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 254 transitions, 3089 flow [2024-06-28 04:11:45,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:45,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:11:45,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:11:45,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 04:11:45,240 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:11:45,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:11:45,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1443941011, now seen corresponding path program 5 times [2024-06-28 04:11:45,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:11:45,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036627234] [2024-06-28 04:11:45,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:11:45,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:11:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:11:47,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:11:47,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:11:47,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036627234] [2024-06-28 04:11:47,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036627234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:11:47,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:11:47,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:11:47,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702070597] [2024-06-28 04:11:47,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:11:47,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:11:47,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:11:47,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:11:47,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:11:47,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:11:47,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 254 transitions, 3089 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:47,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:11:47,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:11:47,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:11:48,374 INFO L124 PetriNetUnfolderBase]: 2117/3510 cut-off events. [2024-06-28 04:11:48,374 INFO L125 PetriNetUnfolderBase]: For 189233/189237 co-relation queries the response was YES. [2024-06-28 04:11:48,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22409 conditions, 3510 events. 2117/3510 cut-off events. For 189233/189237 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 20705 event pairs, 554 based on Foata normal form. 3/3512 useless extension candidates. Maximal degree in co-relation 22304. Up to 3240 conditions per place. [2024-06-28 04:11:48,407 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 236 selfloop transitions, 32 changer transitions 0/273 dead transitions. [2024-06-28 04:11:48,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 273 transitions, 3673 flow [2024-06-28 04:11:48,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:11:48,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:11:48,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-28 04:11:48,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3869047619047619 [2024-06-28 04:11:48,408 INFO L175 Difference]: Start difference. First operand has 218 places, 254 transitions, 3089 flow. Second operand 8 states and 130 transitions. [2024-06-28 04:11:48,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 273 transitions, 3673 flow [2024-06-28 04:11:48,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 273 transitions, 3591 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 04:11:48,637 INFO L231 Difference]: Finished difference. Result has 221 places, 254 transitions, 3078 flow [2024-06-28 04:11:48,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3007, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3078, PETRI_PLACES=221, PETRI_TRANSITIONS=254} [2024-06-28 04:11:48,638 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 178 predicate places. [2024-06-28 04:11:48,638 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 254 transitions, 3078 flow [2024-06-28 04:11:48,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:48,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:11:48,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:11:48,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 04:11:48,639 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:11:48,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:11:48,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1049227639, now seen corresponding path program 1 times [2024-06-28 04:11:48,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:11:48,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934405377] [2024-06-28 04:11:48,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:11:48,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:11:48,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:11:51,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:11:51,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:11:51,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934405377] [2024-06-28 04:11:51,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934405377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:11:51,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:11:51,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:11:51,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283408551] [2024-06-28 04:11:51,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:11:51,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:11:51,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:11:51,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:11:51,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:11:51,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:11:51,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 254 transitions, 3078 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:51,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:11:51,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:11:51,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:11:52,900 INFO L124 PetriNetUnfolderBase]: 2130/3531 cut-off events. [2024-06-28 04:11:52,901 INFO L125 PetriNetUnfolderBase]: For 195142/195148 co-relation queries the response was YES. [2024-06-28 04:11:52,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22689 conditions, 3531 events. 2130/3531 cut-off events. For 195142/195148 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 20819 event pairs, 540 based on Foata normal form. 7/3537 useless extension candidates. Maximal degree in co-relation 22583. Up to 3149 conditions per place. [2024-06-28 04:11:52,936 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 221 selfloop transitions, 72 changer transitions 0/298 dead transitions. [2024-06-28 04:11:52,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 298 transitions, 3987 flow [2024-06-28 04:11:52,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:11:52,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:11:52,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-28 04:11:52,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-06-28 04:11:52,938 INFO L175 Difference]: Start difference. First operand has 221 places, 254 transitions, 3078 flow. Second operand 9 states and 161 transitions. [2024-06-28 04:11:52,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 298 transitions, 3987 flow [2024-06-28 04:11:53,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 298 transitions, 3904 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 04:11:53,203 INFO L231 Difference]: Finished difference. Result has 223 places, 260 transitions, 3272 flow [2024-06-28 04:11:53,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2995, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3272, PETRI_PLACES=223, PETRI_TRANSITIONS=260} [2024-06-28 04:11:53,203 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 180 predicate places. [2024-06-28 04:11:53,204 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 260 transitions, 3272 flow [2024-06-28 04:11:53,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:53,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:11:53,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:11:53,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 04:11:53,204 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:11:53,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:11:53,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1164697555, now seen corresponding path program 1 times [2024-06-28 04:11:53,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:11:53,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791746252] [2024-06-28 04:11:53,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:11:53,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:11:53,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:11:56,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:11:56,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:11:56,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791746252] [2024-06-28 04:11:56,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791746252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:11:56,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:11:56,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:11:56,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521187368] [2024-06-28 04:11:56,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:11:56,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:11:56,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:11:56,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:11:56,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:11:56,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:11:56,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 260 transitions, 3272 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:56,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:11:56,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:11:56,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:11:57,404 INFO L124 PetriNetUnfolderBase]: 2151/3559 cut-off events. [2024-06-28 04:11:57,405 INFO L125 PetriNetUnfolderBase]: For 208847/208853 co-relation queries the response was YES. [2024-06-28 04:11:57,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23792 conditions, 3559 events. 2151/3559 cut-off events. For 208847/208853 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 21023 event pairs, 558 based on Foata normal form. 7/3562 useless extension candidates. Maximal degree in co-relation 23684. Up to 3172 conditions per place. [2024-06-28 04:11:57,434 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 217 selfloop transitions, 73 changer transitions 0/295 dead transitions. [2024-06-28 04:11:57,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 295 transitions, 4323 flow [2024-06-28 04:11:57,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:11:57,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:11:57,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-28 04:11:57,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43537414965986393 [2024-06-28 04:11:57,435 INFO L175 Difference]: Start difference. First operand has 223 places, 260 transitions, 3272 flow. Second operand 7 states and 128 transitions. [2024-06-28 04:11:57,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 295 transitions, 4323 flow [2024-06-28 04:11:57,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 295 transitions, 4194 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-28 04:11:57,747 INFO L231 Difference]: Finished difference. Result has 225 places, 269 transitions, 3455 flow [2024-06-28 04:11:57,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3143, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3455, PETRI_PLACES=225, PETRI_TRANSITIONS=269} [2024-06-28 04:11:57,747 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 182 predicate places. [2024-06-28 04:11:57,747 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 269 transitions, 3455 flow [2024-06-28 04:11:57,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:11:57,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:11:57,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:11:57,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 04:11:57,748 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:11:57,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:11:57,748 INFO L85 PathProgramCache]: Analyzing trace with hash -2082655041, now seen corresponding path program 2 times [2024-06-28 04:11:57,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:11:57,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331731057] [2024-06-28 04:11:57,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:11:57,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:11:57,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:12:01,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:12:01,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:12:01,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331731057] [2024-06-28 04:12:01,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331731057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:12:01,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:12:01,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:12:01,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981283194] [2024-06-28 04:12:01,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:12:01,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:12:01,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:12:01,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:12:01,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:12:01,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:12:01,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 269 transitions, 3455 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:12:01,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:12:01,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:12:01,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:12:02,602 INFO L124 PetriNetUnfolderBase]: 2164/3572 cut-off events. [2024-06-28 04:12:02,602 INFO L125 PetriNetUnfolderBase]: For 217631/217635 co-relation queries the response was YES. [2024-06-28 04:12:02,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24241 conditions, 3572 events. 2164/3572 cut-off events. For 217631/217635 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 20990 event pairs, 489 based on Foata normal form. 2/3569 useless extension candidates. Maximal degree in co-relation 24131. Up to 2928 conditions per place. [2024-06-28 04:12:02,635 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 174 selfloop transitions, 129 changer transitions 0/308 dead transitions. [2024-06-28 04:12:02,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 308 transitions, 4579 flow [2024-06-28 04:12:02,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:12:02,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:12:02,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 04:12:02,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 04:12:02,637 INFO L175 Difference]: Start difference. First operand has 225 places, 269 transitions, 3455 flow. Second operand 8 states and 147 transitions. [2024-06-28 04:12:02,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 308 transitions, 4579 flow [2024-06-28 04:12:02,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 308 transitions, 4453 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-28 04:12:02,945 INFO L231 Difference]: Finished difference. Result has 232 places, 278 transitions, 3879 flow [2024-06-28 04:12:02,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3329, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3879, PETRI_PLACES=232, PETRI_TRANSITIONS=278} [2024-06-28 04:12:02,945 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 189 predicate places. [2024-06-28 04:12:02,945 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 278 transitions, 3879 flow [2024-06-28 04:12:02,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:12:02,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:12:02,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:12:02,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 04:12:02,946 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:12:02,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:12:02,946 INFO L85 PathProgramCache]: Analyzing trace with hash -745086733, now seen corresponding path program 1 times [2024-06-28 04:12:02,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:12:02,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982031143] [2024-06-28 04:12:02,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:12:02,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:12:02,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:12:05,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:12:05,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:12:05,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982031143] [2024-06-28 04:12:05,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982031143] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:12:05,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:12:05,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:12:05,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243598957] [2024-06-28 04:12:05,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:12:05,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:12:05,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:12:05,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:12:05,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:12:05,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:12:05,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 278 transitions, 3879 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:12:05,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:12:05,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:12:05,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:12:07,469 INFO L124 PetriNetUnfolderBase]: 2222/3659 cut-off events. [2024-06-28 04:12:07,470 INFO L125 PetriNetUnfolderBase]: For 243685/243691 co-relation queries the response was YES. [2024-06-28 04:12:07,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26333 conditions, 3659 events. 2222/3659 cut-off events. For 243685/243691 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 21557 event pairs, 563 based on Foata normal form. 8/3663 useless extension candidates. Maximal degree in co-relation 26220. Up to 3178 conditions per place. [2024-06-28 04:12:07,508 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 233 selfloop transitions, 87 changer transitions 0/325 dead transitions. [2024-06-28 04:12:07,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 325 transitions, 5180 flow [2024-06-28 04:12:07,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:12:07,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:12:07,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-28 04:12:07,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-28 04:12:07,509 INFO L175 Difference]: Start difference. First operand has 232 places, 278 transitions, 3879 flow. Second operand 10 states and 170 transitions. [2024-06-28 04:12:07,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 325 transitions, 5180 flow [2024-06-28 04:12:07,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 325 transitions, 5021 flow, removed 49 selfloop flow, removed 3 redundant places. [2024-06-28 04:12:07,872 INFO L231 Difference]: Finished difference. Result has 241 places, 291 transitions, 4118 flow [2024-06-28 04:12:07,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3726, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4118, PETRI_PLACES=241, PETRI_TRANSITIONS=291} [2024-06-28 04:12:07,873 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 198 predicate places. [2024-06-28 04:12:07,873 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 291 transitions, 4118 flow [2024-06-28 04:12:07,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:12:07,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:12:07,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:12:07,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 04:12:07,874 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:12:07,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:12:07,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1164817525, now seen corresponding path program 2 times [2024-06-28 04:12:07,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:12:07,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820899826] [2024-06-28 04:12:07,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:12:07,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:12:07,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:12:11,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:12:11,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:12:11,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820899826] [2024-06-28 04:12:11,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820899826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:12:11,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:12:11,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:12:11,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157252249] [2024-06-28 04:12:11,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:12:11,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:12:11,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:12:11,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:12:11,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:12:11,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:12:11,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 291 transitions, 4118 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:12:11,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:12:11,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:12:11,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:12:13,189 INFO L124 PetriNetUnfolderBase]: 2227/3668 cut-off events. [2024-06-28 04:12:13,189 INFO L125 PetriNetUnfolderBase]: For 249154/249160 co-relation queries the response was YES. [2024-06-28 04:12:13,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26483 conditions, 3668 events. 2227/3668 cut-off events. For 249154/249160 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 21634 event pairs, 566 based on Foata normal form. 7/3671 useless extension candidates. Maximal degree in co-relation 26366. Up to 3276 conditions per place. [2024-06-28 04:12:13,226 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 238 selfloop transitions, 77 changer transitions 0/320 dead transitions. [2024-06-28 04:12:13,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 320 transitions, 5010 flow [2024-06-28 04:12:13,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:12:13,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:12:13,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 04:12:13,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41369047619047616 [2024-06-28 04:12:13,227 INFO L175 Difference]: Start difference. First operand has 241 places, 291 transitions, 4118 flow. Second operand 8 states and 139 transitions. [2024-06-28 04:12:13,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 320 transitions, 5010 flow [2024-06-28 04:12:13,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 320 transitions, 4835 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-28 04:12:13,646 INFO L231 Difference]: Finished difference. Result has 244 places, 294 transitions, 4164 flow [2024-06-28 04:12:13,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3946, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4164, PETRI_PLACES=244, PETRI_TRANSITIONS=294} [2024-06-28 04:12:13,647 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 201 predicate places. [2024-06-28 04:12:13,647 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 294 transitions, 4164 flow [2024-06-28 04:12:13,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:12:13,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:12:13,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:12:13,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 04:12:13,647 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:12:13,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:12:13,647 INFO L85 PathProgramCache]: Analyzing trace with hash -745087105, now seen corresponding path program 3 times [2024-06-28 04:12:13,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:12:13,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792839475] [2024-06-28 04:12:13,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:12:13,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:12:13,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:12:16,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:12:16,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:12:16,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792839475] [2024-06-28 04:12:16,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792839475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:12:16,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:12:16,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:12:16,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722148748] [2024-06-28 04:12:16,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:12:16,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:12:16,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:12:16,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:12:16,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:12:17,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:12:17,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 294 transitions, 4164 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:12:17,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:12:17,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:12:17,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:12:18,613 INFO L124 PetriNetUnfolderBase]: 2232/3670 cut-off events. [2024-06-28 04:12:18,614 INFO L125 PetriNetUnfolderBase]: For 255760/255764 co-relation queries the response was YES. [2024-06-28 04:12:18,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26640 conditions, 3670 events. 2232/3670 cut-off events. For 255760/255764 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 21550 event pairs, 497 based on Foata normal form. 2/3667 useless extension candidates. Maximal degree in co-relation 26521. Up to 3016 conditions per place. [2024-06-28 04:12:18,656 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 184 selfloop transitions, 134 changer transitions 0/323 dead transitions. [2024-06-28 04:12:18,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 323 transitions, 5206 flow [2024-06-28 04:12:18,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:12:18,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:12:18,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 04:12:18,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4255952380952381 [2024-06-28 04:12:18,658 INFO L175 Difference]: Start difference. First operand has 244 places, 294 transitions, 4164 flow. Second operand 8 states and 143 transitions. [2024-06-28 04:12:18,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 323 transitions, 5206 flow [2024-06-28 04:12:19,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 323 transitions, 5028 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 04:12:19,149 INFO L231 Difference]: Finished difference. Result has 246 places, 297 transitions, 4312 flow [2024-06-28 04:12:19,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3986, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4312, PETRI_PLACES=246, PETRI_TRANSITIONS=297} [2024-06-28 04:12:19,150 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 203 predicate places. [2024-06-28 04:12:19,150 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 297 transitions, 4312 flow [2024-06-28 04:12:19,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:12:19,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:12:19,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:12:19,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 04:12:19,150 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:12:19,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:12:19,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1342186381, now seen corresponding path program 2 times [2024-06-28 04:12:19,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:12:19,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444550941] [2024-06-28 04:12:19,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:12:19,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:12:19,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:12:22,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:12:22,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:12:22,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444550941] [2024-06-28 04:12:22,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444550941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:12:22,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:12:22,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:12:22,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614366556] [2024-06-28 04:12:22,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:12:22,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:12:22,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:12:22,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:12:22,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:12:22,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:12:22,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 297 transitions, 4312 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:12:22,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:12:22,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:12:22,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:12:23,750 INFO L124 PetriNetUnfolderBase]: 2316/3797 cut-off events. [2024-06-28 04:12:23,750 INFO L125 PetriNetUnfolderBase]: For 284904/284908 co-relation queries the response was YES. [2024-06-28 04:12:23,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28315 conditions, 3797 events. 2316/3797 cut-off events. For 284904/284908 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 22261 event pairs, 480 based on Foata normal form. 5/3801 useless extension candidates. Maximal degree in co-relation 28195. Up to 3351 conditions per place. [2024-06-28 04:12:23,788 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 264 selfloop transitions, 75 changer transitions 0/344 dead transitions. [2024-06-28 04:12:23,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 344 transitions, 5623 flow [2024-06-28 04:12:23,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:12:23,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:12:23,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-28 04:12:23,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38961038961038963 [2024-06-28 04:12:23,790 INFO L175 Difference]: Start difference. First operand has 246 places, 297 transitions, 4312 flow. Second operand 11 states and 180 transitions. [2024-06-28 04:12:23,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 344 transitions, 5623 flow [2024-06-28 04:12:24,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 344 transitions, 5362 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 04:12:24,317 INFO L231 Difference]: Finished difference. Result has 253 places, 311 transitions, 4450 flow [2024-06-28 04:12:24,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4051, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4450, PETRI_PLACES=253, PETRI_TRANSITIONS=311} [2024-06-28 04:12:24,317 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 210 predicate places. [2024-06-28 04:12:24,317 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 311 transitions, 4450 flow [2024-06-28 04:12:24,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:12:24,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:12:24,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:12:24,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 04:12:24,317 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:12:24,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:12:24,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1169458969, now seen corresponding path program 4 times [2024-06-28 04:12:24,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:12:24,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122686664] [2024-06-28 04:12:24,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:12:24,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:12:24,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:12:27,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:12:27,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:12:27,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122686664] [2024-06-28 04:12:27,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122686664] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:12:27,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:12:27,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:12:27,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384959269] [2024-06-28 04:12:27,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:12:27,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:12:27,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:12:27,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:12:27,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:12:27,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:12:27,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 311 transitions, 4450 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:12:27,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:12:27,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:12:27,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:12:29,252 INFO L124 PetriNetUnfolderBase]: 2329/3811 cut-off events. [2024-06-28 04:12:29,253 INFO L125 PetriNetUnfolderBase]: For 294369/294373 co-relation queries the response was YES. [2024-06-28 04:12:29,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29070 conditions, 3811 events. 2329/3811 cut-off events. For 294369/294373 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 22323 event pairs, 483 based on Foata normal form. 2/3812 useless extension candidates. Maximal degree in co-relation 28948. Up to 3474 conditions per place. [2024-06-28 04:12:29,295 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 275 selfloop transitions, 59 changer transitions 0/339 dead transitions. [2024-06-28 04:12:29,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 339 transitions, 5422 flow [2024-06-28 04:12:29,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:12:29,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:12:29,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-28 04:12:29,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3862433862433862 [2024-06-28 04:12:29,297 INFO L175 Difference]: Start difference. First operand has 253 places, 311 transitions, 4450 flow. Second operand 9 states and 146 transitions. [2024-06-28 04:12:29,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 339 transitions, 5422 flow [2024-06-28 04:12:29,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 339 transitions, 5234 flow, removed 55 selfloop flow, removed 7 redundant places. [2024-06-28 04:12:29,826 INFO L231 Difference]: Finished difference. Result has 256 places, 317 transitions, 4519 flow [2024-06-28 04:12:29,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4262, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4519, PETRI_PLACES=256, PETRI_TRANSITIONS=317} [2024-06-28 04:12:29,827 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 213 predicate places. [2024-06-28 04:12:29,827 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 317 transitions, 4519 flow [2024-06-28 04:12:29,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:12:29,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:12:29,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:12:29,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 04:12:29,827 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:12:29,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:12:29,827 INFO L85 PathProgramCache]: Analyzing trace with hash 98155319, now seen corresponding path program 3 times [2024-06-28 04:12:29,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:12:29,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306176387] [2024-06-28 04:12:29,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:12:29,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:12:29,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:12:32,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:12:32,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:12:32,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306176387] [2024-06-28 04:12:32,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306176387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:12:32,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:12:32,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:12:32,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604265744] [2024-06-28 04:12:32,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:12:32,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:12:32,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:12:32,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:12:32,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:12:32,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:12:32,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 317 transitions, 4519 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:12:32,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:12:32,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:12:32,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:12:34,195 INFO L124 PetriNetUnfolderBase]: 2326/3811 cut-off events. [2024-06-28 04:12:34,195 INFO L125 PetriNetUnfolderBase]: For 297850/297854 co-relation queries the response was YES. [2024-06-28 04:12:34,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29034 conditions, 3811 events. 2326/3811 cut-off events. For 297850/297854 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 22326 event pairs, 485 based on Foata normal form. 2/3812 useless extension candidates. Maximal degree in co-relation 28909. Up to 3481 conditions per place. [2024-06-28 04:12:34,239 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 278 selfloop transitions, 54 changer transitions 0/337 dead transitions. [2024-06-28 04:12:34,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 337 transitions, 5249 flow [2024-06-28 04:12:34,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:12:34,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:12:34,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-28 04:12:34,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-28 04:12:34,241 INFO L175 Difference]: Start difference. First operand has 256 places, 317 transitions, 4519 flow. Second operand 8 states and 133 transitions. [2024-06-28 04:12:34,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 337 transitions, 5249 flow [2024-06-28 04:12:34,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 337 transitions, 5094 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 04:12:34,741 INFO L231 Difference]: Finished difference. Result has 258 places, 317 transitions, 4486 flow [2024-06-28 04:12:34,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4364, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4486, PETRI_PLACES=258, PETRI_TRANSITIONS=317} [2024-06-28 04:12:34,741 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 215 predicate places. [2024-06-28 04:12:34,741 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 317 transitions, 4486 flow [2024-06-28 04:12:34,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:12:34,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:12:34,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:12:34,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 04:12:34,742 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:12:34,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:12:34,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1341949231, now seen corresponding path program 3 times [2024-06-28 04:12:34,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:12:34,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987749116] [2024-06-28 04:12:34,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:12:34,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:12:34,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:12:37,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:12:37,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:12:37,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987749116] [2024-06-28 04:12:37,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987749116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:12:37,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:12:37,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:12:37,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080935865] [2024-06-28 04:12:37,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:12:37,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:12:37,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:12:37,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:12:37,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:12:37,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:12:37,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 317 transitions, 4486 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:12:37,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:12:37,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:12:37,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:12:39,287 INFO L124 PetriNetUnfolderBase]: 2314/3803 cut-off events. [2024-06-28 04:12:39,288 INFO L125 PetriNetUnfolderBase]: For 303462/303466 co-relation queries the response was YES. [2024-06-28 04:12:39,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28721 conditions, 3803 events. 2314/3803 cut-off events. For 303462/303466 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 22387 event pairs, 475 based on Foata normal form. 5/3807 useless extension candidates. Maximal degree in co-relation 28595. Up to 3361 conditions per place. [2024-06-28 04:12:39,331 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 268 selfloop transitions, 79 changer transitions 0/352 dead transitions. [2024-06-28 04:12:39,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 352 transitions, 5520 flow [2024-06-28 04:12:39,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:12:39,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:12:39,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-28 04:12:39,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38961038961038963 [2024-06-28 04:12:39,332 INFO L175 Difference]: Start difference. First operand has 258 places, 317 transitions, 4486 flow. Second operand 11 states and 180 transitions. [2024-06-28 04:12:39,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 352 transitions, 5520 flow [2024-06-28 04:12:39,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 352 transitions, 5426 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 04:12:39,896 INFO L231 Difference]: Finished difference. Result has 263 places, 321 transitions, 4663 flow [2024-06-28 04:12:39,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4392, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4663, PETRI_PLACES=263, PETRI_TRANSITIONS=321} [2024-06-28 04:12:39,897 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 220 predicate places. [2024-06-28 04:12:39,897 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 321 transitions, 4663 flow [2024-06-28 04:12:39,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:12:39,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:12:39,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:12:39,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 04:12:39,898 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:12:39,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:12:39,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1342195309, now seen corresponding path program 1 times [2024-06-28 04:12:39,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:12:39,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287325088] [2024-06-28 04:12:39,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:12:39,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:12:39,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:12:44,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:12:44,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:12:44,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287325088] [2024-06-28 04:12:44,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287325088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:12:44,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:12:44,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:12:44,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476567850] [2024-06-28 04:12:44,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:12:44,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:12:44,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:12:44,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:12:44,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:12:44,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 04:12:44,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 321 transitions, 4663 flow. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:12:44,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:12:44,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 04:12:44,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:12:45,710 INFO L124 PetriNetUnfolderBase]: 2227/3691 cut-off events. [2024-06-28 04:12:45,710 INFO L125 PetriNetUnfolderBase]: For 333014/333027 co-relation queries the response was YES. [2024-06-28 04:12:45,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28575 conditions, 3691 events. 2227/3691 cut-off events. For 333014/333027 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 22041 event pairs, 457 based on Foata normal form. 22/3686 useless extension candidates. Maximal degree in co-relation 28448. Up to 3194 conditions per place. [2024-06-28 04:12:45,751 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 266 selfloop transitions, 47 changer transitions 0/349 dead transitions. [2024-06-28 04:12:45,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 349 transitions, 5397 flow [2024-06-28 04:12:45,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:12:45,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:12:45,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 04:12:45,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-06-28 04:12:45,753 INFO L175 Difference]: Start difference. First operand has 263 places, 321 transitions, 4663 flow. Second operand 9 states and 154 transitions. [2024-06-28 04:12:45,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 349 transitions, 5397 flow [2024-06-28 04:12:46,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 349 transitions, 5177 flow, removed 45 selfloop flow, removed 8 redundant places. [2024-06-28 04:12:46,298 INFO L231 Difference]: Finished difference. Result has 264 places, 322 transitions, 4561 flow [2024-06-28 04:12:46,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4443, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4561, PETRI_PLACES=264, PETRI_TRANSITIONS=322} [2024-06-28 04:12:46,298 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 221 predicate places. [2024-06-28 04:12:46,298 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 322 transitions, 4561 flow [2024-06-28 04:12:46,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:12:46,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:12:46,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:12:46,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 04:12:46,299 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:12:46,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:12:46,299 INFO L85 PathProgramCache]: Analyzing trace with hash -410782311, now seen corresponding path program 5 times [2024-06-28 04:12:46,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:12:46,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311668121] [2024-06-28 04:12:46,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:12:46,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:12:46,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:12:49,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:12:49,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:12:49,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311668121] [2024-06-28 04:12:49,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311668121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:12:49,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:12:49,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:12:49,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363287175] [2024-06-28 04:12:49,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:12:49,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:12:49,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:12:49,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:12:49,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:12:49,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:12:49,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 322 transitions, 4561 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:12:49,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:12:49,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:12:49,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:12:50,987 INFO L124 PetriNetUnfolderBase]: 2363/3851 cut-off events. [2024-06-28 04:12:50,987 INFO L125 PetriNetUnfolderBase]: For 319106/319114 co-relation queries the response was YES. [2024-06-28 04:12:51,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29459 conditions, 3851 events. 2363/3851 cut-off events. For 319106/319114 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 22586 event pairs, 573 based on Foata normal form. 3/3835 useless extension candidates. Maximal degree in co-relation 29331. Up to 3199 conditions per place. [2024-06-28 04:12:51,031 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 200 selfloop transitions, 150 changer transitions 0/355 dead transitions. [2024-06-28 04:12:51,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 355 transitions, 5913 flow [2024-06-28 04:12:51,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:12:51,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:12:51,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 04:12:51,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4255952380952381 [2024-06-28 04:12:51,032 INFO L175 Difference]: Start difference. First operand has 264 places, 322 transitions, 4561 flow. Second operand 8 states and 143 transitions. [2024-06-28 04:12:51,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 355 transitions, 5913 flow [2024-06-28 04:12:51,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 355 transitions, 5835 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 04:12:51,564 INFO L231 Difference]: Finished difference. Result has 266 places, 328 transitions, 4963 flow [2024-06-28 04:12:51,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4483, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4963, PETRI_PLACES=266, PETRI_TRANSITIONS=328} [2024-06-28 04:12:51,565 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 223 predicate places. [2024-06-28 04:12:51,565 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 328 transitions, 4963 flow [2024-06-28 04:12:51,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:12:51,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:12:51,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:12:51,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 04:12:51,566 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:12:51,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:12:51,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1072489573, now seen corresponding path program 4 times [2024-06-28 04:12:51,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:12:51,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589984535] [2024-06-28 04:12:51,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:12:51,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:12:51,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:12:54,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:12:54,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:12:54,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589984535] [2024-06-28 04:12:54,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589984535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:12:54,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:12:54,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:12:54,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140401013] [2024-06-28 04:12:54,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:12:54,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:12:54,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:12:54,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:12:54,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:12:54,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:12:54,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 328 transitions, 4963 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:12:54,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:12:54,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:12:54,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:12:55,914 INFO L124 PetriNetUnfolderBase]: 2373/3887 cut-off events. [2024-06-28 04:12:55,914 INFO L125 PetriNetUnfolderBase]: For 332933/332945 co-relation queries the response was YES. [2024-06-28 04:12:55,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30070 conditions, 3887 events. 2373/3887 cut-off events. For 332933/332945 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 23019 event pairs, 601 based on Foata normal form. 12/3891 useless extension candidates. Maximal degree in co-relation 29941. Up to 3470 conditions per place. [2024-06-28 04:12:55,965 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 270 selfloop transitions, 86 changer transitions 0/361 dead transitions. [2024-06-28 04:12:55,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 361 transitions, 6178 flow [2024-06-28 04:12:55,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:12:55,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:12:55,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-28 04:12:55,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3941798941798942 [2024-06-28 04:12:55,966 INFO L175 Difference]: Start difference. First operand has 266 places, 328 transitions, 4963 flow. Second operand 9 states and 149 transitions. [2024-06-28 04:12:55,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 361 transitions, 6178 flow [2024-06-28 04:12:56,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 361 transitions, 5914 flow, removed 58 selfloop flow, removed 5 redundant places. [2024-06-28 04:12:56,616 INFO L231 Difference]: Finished difference. Result has 270 places, 334 transitions, 5031 flow [2024-06-28 04:12:56,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4707, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5031, PETRI_PLACES=270, PETRI_TRANSITIONS=334} [2024-06-28 04:12:56,616 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 227 predicate places. [2024-06-28 04:12:56,616 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 334 transitions, 5031 flow [2024-06-28 04:12:56,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:12:56,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:12:56,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:12:56,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 04:12:56,616 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:12:56,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:12:56,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1751917593, now seen corresponding path program 4 times [2024-06-28 04:12:56,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:12:56,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375258035] [2024-06-28 04:12:56,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:12:56,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:12:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:12:59,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:12:59,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:12:59,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375258035] [2024-06-28 04:12:59,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375258035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:12:59,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:12:59,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:12:59,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196737919] [2024-06-28 04:12:59,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:12:59,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:12:59,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:12:59,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:12:59,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:12:59,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:12:59,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 334 transitions, 5031 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:12:59,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:12:59,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:12:59,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:13:01,483 INFO L124 PetriNetUnfolderBase]: 2378/3903 cut-off events. [2024-06-28 04:13:01,483 INFO L125 PetriNetUnfolderBase]: For 339121/339133 co-relation queries the response was YES. [2024-06-28 04:13:01,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30103 conditions, 3903 events. 2378/3903 cut-off events. For 339121/339133 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 23283 event pairs, 751 based on Foata normal form. 11/3906 useless extension candidates. Maximal degree in co-relation 29973. Up to 3493 conditions per place. [2024-06-28 04:13:01,530 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 271 selfloop transitions, 86 changer transitions 0/362 dead transitions. [2024-06-28 04:13:01,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 362 transitions, 6071 flow [2024-06-28 04:13:01,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:13:01,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:13:01,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-06-28 04:13:01,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-06-28 04:13:01,531 INFO L175 Difference]: Start difference. First operand has 270 places, 334 transitions, 5031 flow. Second operand 9 states and 144 transitions. [2024-06-28 04:13:01,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 362 transitions, 6071 flow [2024-06-28 04:13:02,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 362 transitions, 5951 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-06-28 04:13:02,129 INFO L231 Difference]: Finished difference. Result has 276 places, 339 transitions, 5190 flow [2024-06-28 04:13:02,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4911, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5190, PETRI_PLACES=276, PETRI_TRANSITIONS=339} [2024-06-28 04:13:02,130 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 233 predicate places. [2024-06-28 04:13:02,130 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 339 transitions, 5190 flow [2024-06-28 04:13:02,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:13:02,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:13:02,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:13:02,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 04:13:02,131 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:13:02,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:13:02,131 INFO L85 PathProgramCache]: Analyzing trace with hash 533294419, now seen corresponding path program 6 times [2024-06-28 04:13:02,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:13:02,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650936816] [2024-06-28 04:13:02,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:13:02,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:13:02,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:13:05,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:13:05,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:13:05,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650936816] [2024-06-28 04:13:05,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650936816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:13:05,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:13:05,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:13:05,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483358485] [2024-06-28 04:13:05,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:13:05,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:13:05,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:13:05,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:13:05,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:13:05,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:13:05,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 339 transitions, 5190 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:13:05,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:13:05,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:13:05,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:13:06,855 INFO L124 PetriNetUnfolderBase]: 2383/3880 cut-off events. [2024-06-28 04:13:06,855 INFO L125 PetriNetUnfolderBase]: For 348012/348018 co-relation queries the response was YES. [2024-06-28 04:13:06,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30343 conditions, 3880 events. 2383/3880 cut-off events. For 348012/348018 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 22765 event pairs, 567 based on Foata normal form. 2/3864 useless extension candidates. Maximal degree in co-relation 30209. Up to 3221 conditions per place. [2024-06-28 04:13:06,901 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 207 selfloop transitions, 153 changer transitions 0/365 dead transitions. [2024-06-28 04:13:06,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 365 transitions, 6458 flow [2024-06-28 04:13:06,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:13:06,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:13:06,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 04:13:06,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 04:13:06,903 INFO L175 Difference]: Start difference. First operand has 276 places, 339 transitions, 5190 flow. Second operand 8 states and 140 transitions. [2024-06-28 04:13:06,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 365 transitions, 6458 flow [2024-06-28 04:13:07,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 365 transitions, 6199 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 04:13:07,669 INFO L231 Difference]: Finished difference. Result has 277 places, 342 transitions, 5305 flow [2024-06-28 04:13:07,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4931, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5305, PETRI_PLACES=277, PETRI_TRANSITIONS=342} [2024-06-28 04:13:07,670 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 234 predicate places. [2024-06-28 04:13:07,670 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 342 transitions, 5305 flow [2024-06-28 04:13:07,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:13:07,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:13:07,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:13:07,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 04:13:07,670 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:13:07,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:13:07,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1601034035, now seen corresponding path program 5 times [2024-06-28 04:13:07,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:13:07,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081394257] [2024-06-28 04:13:07,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:13:07,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:13:07,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:13:10,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:13:10,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:13:10,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081394257] [2024-06-28 04:13:10,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081394257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:13:10,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:13:10,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:13:10,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137283063] [2024-06-28 04:13:10,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:13:10,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:13:10,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:13:10,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:13:10,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:13:10,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:13:10,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 342 transitions, 5305 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:13:10,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:13:10,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:13:10,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:13:11,715 INFO L124 PetriNetUnfolderBase]: 2388/3925 cut-off events. [2024-06-28 04:13:11,715 INFO L125 PetriNetUnfolderBase]: For 355715/355741 co-relation queries the response was YES. [2024-06-28 04:13:11,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30758 conditions, 3925 events. 2388/3925 cut-off events. For 355715/355741 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 23327 event pairs, 601 based on Foata normal form. 21/3940 useless extension candidates. Maximal degree in co-relation 30624. Up to 3506 conditions per place. [2024-06-28 04:13:11,760 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 281 selfloop transitions, 81 changer transitions 0/367 dead transitions. [2024-06-28 04:13:11,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 367 transitions, 6451 flow [2024-06-28 04:13:11,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:13:11,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:13:11,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-28 04:13:11,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41836734693877553 [2024-06-28 04:13:11,761 INFO L175 Difference]: Start difference. First operand has 277 places, 342 transitions, 5305 flow. Second operand 7 states and 123 transitions. [2024-06-28 04:13:11,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 367 transitions, 6451 flow [2024-06-28 04:13:12,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 367 transitions, 6116 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-28 04:13:12,490 INFO L231 Difference]: Finished difference. Result has 279 places, 345 transitions, 5210 flow [2024-06-28 04:13:12,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4974, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5210, PETRI_PLACES=279, PETRI_TRANSITIONS=345} [2024-06-28 04:13:12,490 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 236 predicate places. [2024-06-28 04:13:12,491 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 345 transitions, 5210 flow [2024-06-28 04:13:12,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:13:12,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:13:12,491 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] [2024-06-28 04:13:12,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 04:13:12,491 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:13:12,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:13:12,491 INFO L85 PathProgramCache]: Analyzing trace with hash 2111637553, now seen corresponding path program 6 times [2024-06-28 04:13:12,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:13:12,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873398604] [2024-06-28 04:13:12,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:13:12,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:13:12,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:13:14,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:13:14,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:13:14,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873398604] [2024-06-28 04:13:14,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873398604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:13:14,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:13:14,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:13:14,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647266791] [2024-06-28 04:13:14,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:13:14,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:13:14,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:13:14,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:13:14,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:13:14,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:13:14,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 345 transitions, 5210 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:13:14,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:13:14,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:13:14,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:13:16,476 INFO L124 PetriNetUnfolderBase]: 2393/3932 cut-off events. [2024-06-28 04:13:16,476 INFO L125 PetriNetUnfolderBase]: For 362840/362866 co-relation queries the response was YES. [2024-06-28 04:13:16,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30689 conditions, 3932 events. 2393/3932 cut-off events. For 362840/362866 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 23384 event pairs, 601 based on Foata normal form. 21/3947 useless extension candidates. Maximal degree in co-relation 30554. Up to 3512 conditions per place. [2024-06-28 04:13:16,514 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 277 selfloop transitions, 83 changer transitions 0/365 dead transitions. [2024-06-28 04:13:16,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 365 transitions, 6198 flow [2024-06-28 04:13:16,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:13:16,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:13:16,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-28 04:13:16,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4013605442176871 [2024-06-28 04:13:16,516 INFO L175 Difference]: Start difference. First operand has 279 places, 345 transitions, 5210 flow. Second operand 7 states and 118 transitions. [2024-06-28 04:13:16,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 365 transitions, 6198 flow [2024-06-28 04:13:17,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 365 transitions, 5936 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 04:13:17,195 INFO L231 Difference]: Finished difference. Result has 280 places, 348 transitions, 5194 flow [2024-06-28 04:13:17,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4960, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5194, PETRI_PLACES=280, PETRI_TRANSITIONS=348} [2024-06-28 04:13:17,195 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 237 predicate places. [2024-06-28 04:13:17,195 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 348 transitions, 5194 flow [2024-06-28 04:13:17,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:13:17,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:13:17,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:13:17,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 04:13:17,196 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:13:17,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:13:17,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1044070263, now seen corresponding path program 7 times [2024-06-28 04:13:17,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:13:17,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048519493] [2024-06-28 04:13:17,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:13:17,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:13:17,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:13:20,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:13:20,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:13:20,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048519493] [2024-06-28 04:13:20,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048519493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:13:20,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:13:20,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:13:20,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149706744] [2024-06-28 04:13:20,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:13:20,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:13:20,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:13:20,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:13:20,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:13:20,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:13:20,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 348 transitions, 5194 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:13:20,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:13:20,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:13:20,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:13:22,047 INFO L124 PetriNetUnfolderBase]: 2398/3907 cut-off events. [2024-06-28 04:13:22,047 INFO L125 PetriNetUnfolderBase]: For 372021/372027 co-relation queries the response was YES. [2024-06-28 04:13:22,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30731 conditions, 3907 events. 2398/3907 cut-off events. For 372021/372027 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 22953 event pairs, 573 based on Foata normal form. 2/3891 useless extension candidates. Maximal degree in co-relation 30596. Up to 3233 conditions per place. [2024-06-28 04:13:22,087 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 201 selfloop transitions, 163 changer transitions 0/369 dead transitions. [2024-06-28 04:13:22,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 369 transitions, 6329 flow [2024-06-28 04:13:22,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:13:22,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:13:22,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-28 04:13:22,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39880952380952384 [2024-06-28 04:13:22,089 INFO L175 Difference]: Start difference. First operand has 280 places, 348 transitions, 5194 flow. Second operand 8 states and 134 transitions. [2024-06-28 04:13:22,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 369 transitions, 6329 flow [2024-06-28 04:13:22,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 369 transitions, 6187 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 04:13:22,773 INFO L231 Difference]: Finished difference. Result has 284 places, 351 transitions, 5449 flow [2024-06-28 04:13:22,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5052, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5449, PETRI_PLACES=284, PETRI_TRANSITIONS=351} [2024-06-28 04:13:22,774 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 241 predicate places. [2024-06-28 04:13:22,774 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 351 transitions, 5449 flow [2024-06-28 04:13:22,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:13:22,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:13:22,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:13:22,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 04:13:22,774 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:13:22,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:13:22,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1638355435, now seen corresponding path program 7 times [2024-06-28 04:13:22,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:13:22,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168184273] [2024-06-28 04:13:22,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:13:22,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:13:22,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:13:25,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:13:25,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:13:25,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168184273] [2024-06-28 04:13:25,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168184273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:13:25,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:13:25,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:13:25,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991273573] [2024-06-28 04:13:25,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:13:25,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:13:25,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:13:25,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:13:25,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:13:25,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:13:25,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 351 transitions, 5449 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:13:25,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:13:25,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:13:25,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:13:27,036 INFO L124 PetriNetUnfolderBase]: 2395/3927 cut-off events. [2024-06-28 04:13:27,036 INFO L125 PetriNetUnfolderBase]: For 379571/379583 co-relation queries the response was YES. [2024-06-28 04:13:27,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31043 conditions, 3927 events. 2395/3927 cut-off events. For 379571/379583 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 23303 event pairs, 599 based on Foata normal form. 11/3930 useless extension candidates. Maximal degree in co-relation 30907. Up to 3516 conditions per place. [2024-06-28 04:13:27,089 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 275 selfloop transitions, 90 changer transitions 0/370 dead transitions. [2024-06-28 04:13:27,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 370 transitions, 6531 flow [2024-06-28 04:13:27,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:13:27,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:13:27,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-28 04:13:27,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-28 04:13:27,090 INFO L175 Difference]: Start difference. First operand has 284 places, 351 transitions, 5449 flow. Second operand 8 states and 132 transitions. [2024-06-28 04:13:27,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 370 transitions, 6531 flow [2024-06-28 04:13:27,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 370 transitions, 6223 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-28 04:13:27,856 INFO L231 Difference]: Finished difference. Result has 287 places, 351 transitions, 5327 flow [2024-06-28 04:13:27,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5141, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5327, PETRI_PLACES=287, PETRI_TRANSITIONS=351} [2024-06-28 04:13:27,856 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 244 predicate places. [2024-06-28 04:13:27,856 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 351 transitions, 5327 flow [2024-06-28 04:13:27,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:13:27,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:13:27,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:13:27,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 04:13:27,856 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:13:27,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:13:27,857 INFO L85 PathProgramCache]: Analyzing trace with hash -56220369, now seen corresponding path program 5 times [2024-06-28 04:13:27,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:13:27,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589812119] [2024-06-28 04:13:27,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:13:27,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:13:27,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:13:30,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:13:30,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:13:30,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589812119] [2024-06-28 04:13:30,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589812119] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:13:30,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:13:30,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:13:30,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171784253] [2024-06-28 04:13:30,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:13:30,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:13:30,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:13:30,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:13:30,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:13:30,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:13:30,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 351 transitions, 5327 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:13:30,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:13:30,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:13:30,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:13:32,213 INFO L124 PetriNetUnfolderBase]: 2405/3933 cut-off events. [2024-06-28 04:13:32,213 INFO L125 PetriNetUnfolderBase]: For 391173/391185 co-relation queries the response was YES. [2024-06-28 04:13:32,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31064 conditions, 3933 events. 2405/3933 cut-off events. For 391173/391185 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 23231 event pairs, 602 based on Foata normal form. 12/3937 useless extension candidates. Maximal degree in co-relation 30927. Up to 3524 conditions per place. [2024-06-28 04:13:32,256 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 275 selfloop transitions, 93 changer transitions 0/373 dead transitions. [2024-06-28 04:13:32,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 373 transitions, 6327 flow [2024-06-28 04:13:32,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:13:32,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:13:32,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-06-28 04:13:32,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3898809523809524 [2024-06-28 04:13:32,257 INFO L175 Difference]: Start difference. First operand has 287 places, 351 transitions, 5327 flow. Second operand 8 states and 131 transitions. [2024-06-28 04:13:32,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 373 transitions, 6327 flow [2024-06-28 04:13:33,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 373 transitions, 6136 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 04:13:33,088 INFO L231 Difference]: Finished difference. Result has 290 places, 354 transitions, 5394 flow [2024-06-28 04:13:33,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5136, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5394, PETRI_PLACES=290, PETRI_TRANSITIONS=354} [2024-06-28 04:13:33,089 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 247 predicate places. [2024-06-28 04:13:33,089 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 354 transitions, 5394 flow [2024-06-28 04:13:33,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:13:33,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:13:33,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:13:33,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 04:13:33,089 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:13:33,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:13:33,089 INFO L85 PathProgramCache]: Analyzing trace with hash -55804659, now seen corresponding path program 6 times [2024-06-28 04:13:33,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:13:33,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052154293] [2024-06-28 04:13:33,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:13:33,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:13:33,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:13:35,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:13:35,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:13:35,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052154293] [2024-06-28 04:13:35,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052154293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:13:35,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:13:35,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:13:35,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108813556] [2024-06-28 04:13:35,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:13:35,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:13:35,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:13:35,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:13:35,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:13:35,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:13:35,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 354 transitions, 5394 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:13:35,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:13:35,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:13:35,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:13:37,306 INFO L124 PetriNetUnfolderBase]: 2415/3948 cut-off events. [2024-06-28 04:13:37,307 INFO L125 PetriNetUnfolderBase]: For 402169/402181 co-relation queries the response was YES. [2024-06-28 04:13:37,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31253 conditions, 3948 events. 2415/3948 cut-off events. For 402169/402181 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 23341 event pairs, 615 based on Foata normal form. 12/3952 useless extension candidates. Maximal degree in co-relation 31115. Up to 3271 conditions per place. [2024-06-28 04:13:37,430 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 254 selfloop transitions, 129 changer transitions 0/388 dead transitions. [2024-06-28 04:13:37,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 388 transitions, 6720 flow [2024-06-28 04:13:37,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:13:37,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:13:37,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-28 04:13:37,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-06-28 04:13:37,432 INFO L175 Difference]: Start difference. First operand has 290 places, 354 transitions, 5394 flow. Second operand 8 states and 138 transitions. [2024-06-28 04:13:37,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 388 transitions, 6720 flow [2024-06-28 04:13:38,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 388 transitions, 6496 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-28 04:13:38,288 INFO L231 Difference]: Finished difference. Result has 293 places, 365 transitions, 5729 flow [2024-06-28 04:13:38,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5170, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5729, PETRI_PLACES=293, PETRI_TRANSITIONS=365} [2024-06-28 04:13:38,289 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 250 predicate places. [2024-06-28 04:13:38,289 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 365 transitions, 5729 flow [2024-06-28 04:13:38,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:13:38,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:13:38,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:13:38,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 04:13:38,289 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:13:38,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:13:38,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1631183275, now seen corresponding path program 8 times [2024-06-28 04:13:38,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:13:38,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049952722] [2024-06-28 04:13:38,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:13:38,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:13:38,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:13:41,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:13:41,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:13:41,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049952722] [2024-06-28 04:13:41,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049952722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:13:41,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:13:41,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:13:41,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123501608] [2024-06-28 04:13:41,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:13:41,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:13:41,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:13:41,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:13:41,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:13:41,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:13:41,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 365 transitions, 5729 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:13:41,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:13:41,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:13:41,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:13:42,958 INFO L124 PetriNetUnfolderBase]: 2412/3951 cut-off events. [2024-06-28 04:13:42,959 INFO L125 PetriNetUnfolderBase]: For 407954/407966 co-relation queries the response was YES. [2024-06-28 04:13:42,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31952 conditions, 3951 events. 2412/3951 cut-off events. For 407954/407966 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 23429 event pairs, 601 based on Foata normal form. 11/3954 useless extension candidates. Maximal degree in co-relation 31812. Up to 3541 conditions per place. [2024-06-28 04:13:43,009 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 289 selfloop transitions, 91 changer transitions 0/385 dead transitions. [2024-06-28 04:13:43,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 385 transitions, 6699 flow [2024-06-28 04:13:43,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:13:43,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:13:43,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-28 04:13:43,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36904761904761907 [2024-06-28 04:13:43,010 INFO L175 Difference]: Start difference. First operand has 293 places, 365 transitions, 5729 flow. Second operand 10 states and 155 transitions. [2024-06-28 04:13:43,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 385 transitions, 6699 flow [2024-06-28 04:13:43,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 385 transitions, 6581 flow, removed 43 selfloop flow, removed 3 redundant places. [2024-06-28 04:13:43,780 INFO L231 Difference]: Finished difference. Result has 300 places, 365 transitions, 5799 flow [2024-06-28 04:13:43,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5611, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5799, PETRI_PLACES=300, PETRI_TRANSITIONS=365} [2024-06-28 04:13:43,781 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 257 predicate places. [2024-06-28 04:13:43,781 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 365 transitions, 5799 flow [2024-06-28 04:13:43,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:13:43,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:13:43,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:13:43,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 04:13:43,781 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:13:43,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:13:43,781 INFO L85 PathProgramCache]: Analyzing trace with hash -2047250633, now seen corresponding path program 8 times [2024-06-28 04:13:43,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:13:43,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271770465] [2024-06-28 04:13:43,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:13:43,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:13:43,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:13:46,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:13:46,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:13:46,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271770465] [2024-06-28 04:13:46,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271770465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:13:46,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:13:46,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:13:46,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980025326] [2024-06-28 04:13:46,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:13:46,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:13:46,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:13:46,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:13:46,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:13:46,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:13:46,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 365 transitions, 5799 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:13:46,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:13:46,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:13:46,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:13:48,485 INFO L124 PetriNetUnfolderBase]: 2417/3960 cut-off events. [2024-06-28 04:13:48,485 INFO L125 PetriNetUnfolderBase]: For 411922/411922 co-relation queries the response was YES. [2024-06-28 04:13:48,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32039 conditions, 3960 events. 2417/3960 cut-off events. For 411922/411922 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 23401 event pairs, 498 based on Foata normal form. 1/3960 useless extension candidates. Maximal degree in co-relation 31896. Up to 3365 conditions per place. [2024-06-28 04:13:48,530 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 274 selfloop transitions, 126 changer transitions 0/405 dead transitions. [2024-06-28 04:13:48,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 405 transitions, 6920 flow [2024-06-28 04:13:48,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:13:48,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:13:48,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 04:13:48,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417989417989418 [2024-06-28 04:13:48,531 INFO L175 Difference]: Start difference. First operand has 300 places, 365 transitions, 5799 flow. Second operand 9 states and 167 transitions. [2024-06-28 04:13:48,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 405 transitions, 6920 flow [2024-06-28 04:13:49,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 405 transitions, 6745 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 04:13:49,594 INFO L231 Difference]: Finished difference. Result has 302 places, 368 transitions, 6021 flow [2024-06-28 04:13:49,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5624, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6021, PETRI_PLACES=302, PETRI_TRANSITIONS=368} [2024-06-28 04:13:49,594 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 259 predicate places. [2024-06-28 04:13:49,594 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 368 transitions, 6021 flow [2024-06-28 04:13:49,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:13:49,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:13:49,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:13:49,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 04:13:49,594 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:13:49,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:13:49,595 INFO L85 PathProgramCache]: Analyzing trace with hash 2077251755, now seen corresponding path program 7 times [2024-06-28 04:13:49,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:13:49,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122971952] [2024-06-28 04:13:49,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:13:49,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:13:49,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:13:52,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:13:52,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:13:52,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122971952] [2024-06-28 04:13:52,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122971952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:13:52,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:13:52,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:13:52,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841733847] [2024-06-28 04:13:52,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:13:52,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:13:52,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:13:52,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:13:52,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:13:52,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:13:52,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 368 transitions, 6021 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:13:52,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:13:52,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:13:52,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:13:54,063 INFO L124 PetriNetUnfolderBase]: 2531/4126 cut-off events. [2024-06-28 04:13:54,064 INFO L125 PetriNetUnfolderBase]: For 460326/460326 co-relation queries the response was YES. [2024-06-28 04:13:54,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34278 conditions, 4126 events. 2531/4126 cut-off events. For 460326/460326 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 24385 event pairs, 497 based on Foata normal form. 4/4129 useless extension candidates. Maximal degree in co-relation 34132. Up to 3431 conditions per place. [2024-06-28 04:13:54,117 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 284 selfloop transitions, 136 changer transitions 0/425 dead transitions. [2024-06-28 04:13:54,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 425 transitions, 7642 flow [2024-06-28 04:13:54,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:13:54,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:13:54,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-28 04:13:54,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4312169312169312 [2024-06-28 04:13:54,119 INFO L175 Difference]: Start difference. First operand has 302 places, 368 transitions, 6021 flow. Second operand 9 states and 163 transitions. [2024-06-28 04:13:54,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 425 transitions, 7642 flow [2024-06-28 04:13:54,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 425 transitions, 7349 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 04:13:54,954 INFO L231 Difference]: Finished difference. Result has 304 places, 392 transitions, 6448 flow [2024-06-28 04:13:54,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5732, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6448, PETRI_PLACES=304, PETRI_TRANSITIONS=392} [2024-06-28 04:13:54,954 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 261 predicate places. [2024-06-28 04:13:54,954 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 392 transitions, 6448 flow [2024-06-28 04:13:54,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:13:54,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:13:54,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:13:54,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 04:13:54,955 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:13:54,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:13:54,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1812504311, now seen corresponding path program 8 times [2024-06-28 04:13:54,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:13:54,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122361011] [2024-06-28 04:13:54,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:13:54,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:13:54,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:13:57,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:13:57,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:13:57,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122361011] [2024-06-28 04:13:57,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122361011] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:13:57,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:13:57,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:13:57,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273619435] [2024-06-28 04:13:57,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:13:57,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:13:57,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:13:57,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:13:57,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:13:57,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:13:57,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 392 transitions, 6448 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:13:57,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:13:57,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:13:57,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:13:59,192 INFO L124 PetriNetUnfolderBase]: 2605/4243 cut-off events. [2024-06-28 04:13:59,192 INFO L125 PetriNetUnfolderBase]: For 483248/483254 co-relation queries the response was YES. [2024-06-28 04:13:59,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36599 conditions, 4243 events. 2605/4243 cut-off events. For 483248/483254 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 25171 event pairs, 506 based on Foata normal form. 3/4240 useless extension candidates. Maximal degree in co-relation 36451. Up to 3355 conditions per place. [2024-06-28 04:13:59,244 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 255 selfloop transitions, 174 changer transitions 0/434 dead transitions. [2024-06-28 04:13:59,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 434 transitions, 8261 flow [2024-06-28 04:13:59,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:13:59,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:13:59,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 04:13:59,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4126984126984127 [2024-06-28 04:13:59,245 INFO L175 Difference]: Start difference. First operand has 304 places, 392 transitions, 6448 flow. Second operand 9 states and 156 transitions. [2024-06-28 04:13:59,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 434 transitions, 8261 flow [2024-06-28 04:14:00,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 434 transitions, 8042 flow, removed 52 selfloop flow, removed 5 redundant places. [2024-06-28 04:14:00,406 INFO L231 Difference]: Finished difference. Result has 310 places, 408 transitions, 7047 flow [2024-06-28 04:14:00,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6229, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7047, PETRI_PLACES=310, PETRI_TRANSITIONS=408} [2024-06-28 04:14:00,407 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 267 predicate places. [2024-06-28 04:14:00,407 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 408 transitions, 7047 flow [2024-06-28 04:14:00,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:00,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:14:00,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:14:00,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 04:14:00,407 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:14:00,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:14:00,408 INFO L85 PathProgramCache]: Analyzing trace with hash 2077014605, now seen corresponding path program 9 times [2024-06-28 04:14:00,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:14:00,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016920595] [2024-06-28 04:14:00,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:14:00,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:14:00,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:14:03,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:14:03,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:14:03,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016920595] [2024-06-28 04:14:03,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016920595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:14:03,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:14:03,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:14:03,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078444926] [2024-06-28 04:14:03,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:14:03,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:14:03,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:14:03,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:14:03,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:14:03,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:14:03,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 408 transitions, 7047 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:03,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:14:03,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:14:03,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:14:05,125 INFO L124 PetriNetUnfolderBase]: 2593/4222 cut-off events. [2024-06-28 04:14:05,125 INFO L125 PetriNetUnfolderBase]: For 494209/494209 co-relation queries the response was YES. [2024-06-28 04:14:05,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37283 conditions, 4222 events. 2593/4222 cut-off events. For 494209/494209 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 24998 event pairs, 512 based on Foata normal form. 4/4225 useless extension candidates. Maximal degree in co-relation 37131. Up to 3527 conditions per place. [2024-06-28 04:14:05,178 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 294 selfloop transitions, 151 changer transitions 0/450 dead transitions. [2024-06-28 04:14:05,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 450 transitions, 8449 flow [2024-06-28 04:14:05,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:14:05,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:14:05,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 195 transitions. [2024-06-28 04:14:05,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42207792207792205 [2024-06-28 04:14:05,179 INFO L175 Difference]: Start difference. First operand has 310 places, 408 transitions, 7047 flow. Second operand 11 states and 195 transitions. [2024-06-28 04:14:05,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 450 transitions, 8449 flow [2024-06-28 04:14:06,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 450 transitions, 8151 flow, removed 82 selfloop flow, removed 4 redundant places. [2024-06-28 04:14:06,246 INFO L231 Difference]: Finished difference. Result has 317 places, 411 transitions, 7158 flow [2024-06-28 04:14:06,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6753, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7158, PETRI_PLACES=317, PETRI_TRANSITIONS=411} [2024-06-28 04:14:06,247 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 274 predicate places. [2024-06-28 04:14:06,247 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 411 transitions, 7158 flow [2024-06-28 04:14:06,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:06,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:14:06,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:14:06,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 04:14:06,247 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:14:06,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:14:06,247 INFO L85 PathProgramCache]: Analyzing trace with hash 2077014419, now seen corresponding path program 9 times [2024-06-28 04:14:06,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:14:06,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585107555] [2024-06-28 04:14:06,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:14:06,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:14:06,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:14:08,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:14:08,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:14:08,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585107555] [2024-06-28 04:14:08,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585107555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:14:08,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:14:08,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:14:08,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227830119] [2024-06-28 04:14:08,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:14:08,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:14:08,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:14:08,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:14:08,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:14:08,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:14:08,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 411 transitions, 7158 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:08,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:14:08,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:14:08,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:14:10,665 INFO L124 PetriNetUnfolderBase]: 2590/4218 cut-off events. [2024-06-28 04:14:10,666 INFO L125 PetriNetUnfolderBase]: For 488463/488463 co-relation queries the response was YES. [2024-06-28 04:14:10,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37257 conditions, 4218 events. 2590/4218 cut-off events. For 488463/488463 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 24982 event pairs, 526 based on Foata normal form. 1/4218 useless extension candidates. Maximal degree in co-relation 37103. Up to 3701 conditions per place. [2024-06-28 04:14:10,717 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 334 selfloop transitions, 104 changer transitions 0/443 dead transitions. [2024-06-28 04:14:10,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 443 transitions, 8286 flow [2024-06-28 04:14:10,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:14:10,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:14:10,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 04:14:10,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-28 04:14:10,719 INFO L175 Difference]: Start difference. First operand has 317 places, 411 transitions, 7158 flow. Second operand 8 states and 150 transitions. [2024-06-28 04:14:10,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 443 transitions, 8286 flow [2024-06-28 04:14:11,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 443 transitions, 7918 flow, removed 34 selfloop flow, removed 10 redundant places. [2024-06-28 04:14:11,791 INFO L231 Difference]: Finished difference. Result has 315 places, 411 transitions, 7034 flow [2024-06-28 04:14:11,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6790, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7034, PETRI_PLACES=315, PETRI_TRANSITIONS=411} [2024-06-28 04:14:11,791 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 272 predicate places. [2024-06-28 04:14:11,791 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 411 transitions, 7034 flow [2024-06-28 04:14:11,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:11,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:14:11,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:14:11,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 04:14:11,791 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:14:11,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:14:11,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1818218231, now seen corresponding path program 10 times [2024-06-28 04:14:11,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:14:11,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376391943] [2024-06-28 04:14:11,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:14:11,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:14:11,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:14:14,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:14:14,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:14:14,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376391943] [2024-06-28 04:14:14,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376391943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:14:14,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:14:14,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:14:14,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182210343] [2024-06-28 04:14:14,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:14:14,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:14:14,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:14:14,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:14:14,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:14:14,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:14:14,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 411 transitions, 7034 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:14,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:14:14,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:14:14,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:14:16,762 INFO L124 PetriNetUnfolderBase]: 2610/4257 cut-off events. [2024-06-28 04:14:16,762 INFO L125 PetriNetUnfolderBase]: For 507200/507206 co-relation queries the response was YES. [2024-06-28 04:14:16,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37409 conditions, 4257 events. 2610/4257 cut-off events. For 507200/507206 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 25305 event pairs, 494 based on Foata normal form. 5/4256 useless extension candidates. Maximal degree in co-relation 37255. Up to 3365 conditions per place. [2024-06-28 04:14:16,816 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 261 selfloop transitions, 178 changer transitions 0/444 dead transitions. [2024-06-28 04:14:16,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 444 transitions, 8614 flow [2024-06-28 04:14:16,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:14:16,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:14:16,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-28 04:14:16,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40714285714285714 [2024-06-28 04:14:16,818 INFO L175 Difference]: Start difference. First operand has 315 places, 411 transitions, 7034 flow. Second operand 10 states and 171 transitions. [2024-06-28 04:14:16,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 444 transitions, 8614 flow [2024-06-28 04:14:17,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 444 transitions, 8427 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 04:14:17,973 INFO L231 Difference]: Finished difference. Result has 317 places, 417 transitions, 7356 flow [2024-06-28 04:14:17,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6865, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7356, PETRI_PLACES=317, PETRI_TRANSITIONS=417} [2024-06-28 04:14:17,974 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 274 predicate places. [2024-06-28 04:14:17,974 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 417 transitions, 7356 flow [2024-06-28 04:14:17,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:17,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:14:17,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:14:17,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 04:14:17,974 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:14:17,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:14:17,975 INFO L85 PathProgramCache]: Analyzing trace with hash -2040821171, now seen corresponding path program 11 times [2024-06-28 04:14:17,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:14:17,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37841669] [2024-06-28 04:14:17,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:14:17,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:14:17,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:14:20,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:14:20,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:14:20,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37841669] [2024-06-28 04:14:20,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37841669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:14:20,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:14:20,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:14:20,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652166565] [2024-06-28 04:14:20,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:14:20,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:14:20,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:14:20,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:14:20,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:14:20,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:14:20,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 417 transitions, 7356 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:20,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:14:20,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:14:20,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:14:22,172 INFO L124 PetriNetUnfolderBase]: 2604/4253 cut-off events. [2024-06-28 04:14:22,172 INFO L125 PetriNetUnfolderBase]: For 471359/471365 co-relation queries the response was YES. [2024-06-28 04:14:22,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37202 conditions, 4253 events. 2604/4253 cut-off events. For 471359/471365 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 25360 event pairs, 551 based on Foata normal form. 3/4250 useless extension candidates. Maximal degree in co-relation 37050. Up to 3715 conditions per place. [2024-06-28 04:14:22,232 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 333 selfloop transitions, 105 changer transitions 0/443 dead transitions. [2024-06-28 04:14:22,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 443 transitions, 8464 flow [2024-06-28 04:14:22,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:14:22,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:14:22,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 04:14:22,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4255952380952381 [2024-06-28 04:14:22,233 INFO L175 Difference]: Start difference. First operand has 317 places, 417 transitions, 7356 flow. Second operand 8 states and 143 transitions. [2024-06-28 04:14:22,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 443 transitions, 8464 flow [2024-06-28 04:14:23,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 443 transitions, 8015 flow, removed 94 selfloop flow, removed 6 redundant places. [2024-06-28 04:14:23,671 INFO L231 Difference]: Finished difference. Result has 319 places, 417 transitions, 7123 flow [2024-06-28 04:14:23,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6907, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7123, PETRI_PLACES=319, PETRI_TRANSITIONS=417} [2024-06-28 04:14:23,672 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 276 predicate places. [2024-06-28 04:14:23,672 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 417 transitions, 7123 flow [2024-06-28 04:14:23,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:23,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:14:23,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:14:23,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 04:14:23,672 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:14:23,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:14:23,673 INFO L85 PathProgramCache]: Analyzing trace with hash -2040405461, now seen corresponding path program 12 times [2024-06-28 04:14:23,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:14:23,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193268504] [2024-06-28 04:14:23,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:14:23,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:14:23,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:14:26,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:14:26,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:14:26,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193268504] [2024-06-28 04:14:26,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193268504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:14:26,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:14:26,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:14:26,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994189039] [2024-06-28 04:14:26,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:14:26,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:14:26,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:14:26,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:14:26,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:14:26,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:14:26,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 417 transitions, 7123 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:26,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:14:26,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:14:26,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:14:28,145 INFO L124 PetriNetUnfolderBase]: 2598/4239 cut-off events. [2024-06-28 04:14:28,145 INFO L125 PetriNetUnfolderBase]: For 476530/476536 co-relation queries the response was YES. [2024-06-28 04:14:28,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36549 conditions, 4239 events. 2598/4239 cut-off events. For 476530/476536 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 25184 event pairs, 513 based on Foata normal form. 3/4236 useless extension candidates. Maximal degree in co-relation 36396. Up to 3359 conditions per place. [2024-06-28 04:14:28,201 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 254 selfloop transitions, 186 changer transitions 0/445 dead transitions. [2024-06-28 04:14:28,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 445 transitions, 8418 flow [2024-06-28 04:14:28,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:14:28,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:14:28,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-28 04:14:28,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-06-28 04:14:28,202 INFO L175 Difference]: Start difference. First operand has 319 places, 417 transitions, 7123 flow. Second operand 8 states and 148 transitions. [2024-06-28 04:14:28,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 445 transitions, 8418 flow [2024-06-28 04:14:29,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 445 transitions, 8174 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 04:14:29,402 INFO L231 Difference]: Finished difference. Result has 321 places, 417 transitions, 7257 flow [2024-06-28 04:14:29,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6879, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7257, PETRI_PLACES=321, PETRI_TRANSITIONS=417} [2024-06-28 04:14:29,403 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 278 predicate places. [2024-06-28 04:14:29,403 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 417 transitions, 7257 flow [2024-06-28 04:14:29,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:29,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:14:29,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:14:29,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 04:14:29,403 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:14:29,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:14:29,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1592168597, now seen corresponding path program 10 times [2024-06-28 04:14:29,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:14:29,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158292641] [2024-06-28 04:14:29,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:14:29,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:14:29,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:14:31,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:14:31,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:14:31,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158292641] [2024-06-28 04:14:31,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158292641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:14:31,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:14:31,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:14:31,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483112490] [2024-06-28 04:14:31,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:14:31,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:14:31,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:14:31,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:14:31,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:14:31,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:14:31,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 417 transitions, 7257 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:31,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:14:31,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:14:31,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:14:33,192 INFO L124 PetriNetUnfolderBase]: 2595/4237 cut-off events. [2024-06-28 04:14:33,193 INFO L125 PetriNetUnfolderBase]: For 480306/480312 co-relation queries the response was YES. [2024-06-28 04:14:33,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36819 conditions, 4237 events. 2595/4237 cut-off events. For 480306/480312 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 25182 event pairs, 548 based on Foata normal form. 2/4233 useless extension candidates. Maximal degree in co-relation 36665. Up to 3710 conditions per place. [2024-06-28 04:14:33,248 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 333 selfloop transitions, 102 changer transitions 0/440 dead transitions. [2024-06-28 04:14:33,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 440 transitions, 8191 flow [2024-06-28 04:14:33,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:14:33,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:14:33,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-28 04:14:33,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4387755102040816 [2024-06-28 04:14:33,249 INFO L175 Difference]: Start difference. First operand has 321 places, 417 transitions, 7257 flow. Second operand 7 states and 129 transitions. [2024-06-28 04:14:33,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 440 transitions, 8191 flow [2024-06-28 04:14:34,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 440 transitions, 7875 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 04:14:34,353 INFO L231 Difference]: Finished difference. Result has 323 places, 417 transitions, 7155 flow [2024-06-28 04:14:34,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6941, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7155, PETRI_PLACES=323, PETRI_TRANSITIONS=417} [2024-06-28 04:14:34,353 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 280 predicate places. [2024-06-28 04:14:34,353 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 417 transitions, 7155 flow [2024-06-28 04:14:34,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:34,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:14:34,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:14:34,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 04:14:34,354 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:14:34,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:14:34,354 INFO L85 PathProgramCache]: Analyzing trace with hash -2040821543, now seen corresponding path program 9 times [2024-06-28 04:14:34,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:14:34,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245779578] [2024-06-28 04:14:34,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:14:34,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:14:34,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:14:37,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:14:37,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:14:37,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245779578] [2024-06-28 04:14:37,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245779578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:14:37,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:14:37,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:14:37,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028743947] [2024-06-28 04:14:37,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:14:37,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:14:37,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:14:37,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:14:37,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:14:37,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:14:37,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 417 transitions, 7155 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:37,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:14:37,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:14:37,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:14:38,788 INFO L124 PetriNetUnfolderBase]: 2592/4231 cut-off events. [2024-06-28 04:14:38,788 INFO L125 PetriNetUnfolderBase]: For 487280/487286 co-relation queries the response was YES. [2024-06-28 04:14:38,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36569 conditions, 4231 events. 2592/4231 cut-off events. For 487280/487286 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 25145 event pairs, 548 based on Foata normal form. 2/4227 useless extension candidates. Maximal degree in co-relation 36414. Up to 3615 conditions per place. [2024-06-28 04:14:38,844 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 314 selfloop transitions, 127 changer transitions 0/446 dead transitions. [2024-06-28 04:14:38,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 446 transitions, 8285 flow [2024-06-28 04:14:38,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:14:38,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:14:38,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 04:14:38,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 04:14:38,845 INFO L175 Difference]: Start difference. First operand has 323 places, 417 transitions, 7155 flow. Second operand 8 states and 147 transitions. [2024-06-28 04:14:38,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 446 transitions, 8285 flow [2024-06-28 04:14:40,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 446 transitions, 7833 flow, removed 24 selfloop flow, removed 11 redundant places. [2024-06-28 04:14:40,132 INFO L231 Difference]: Finished difference. Result has 320 places, 417 transitions, 6969 flow [2024-06-28 04:14:40,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6705, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6969, PETRI_PLACES=320, PETRI_TRANSITIONS=417} [2024-06-28 04:14:40,132 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 277 predicate places. [2024-06-28 04:14:40,132 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 417 transitions, 6969 flow [2024-06-28 04:14:40,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:40,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:14:40,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:14:40,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 04:14:40,133 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:14:40,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:14:40,133 INFO L85 PathProgramCache]: Analyzing trace with hash 2077260683, now seen corresponding path program 2 times [2024-06-28 04:14:40,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:14:40,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721120678] [2024-06-28 04:14:40,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:14:40,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:14:40,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:14:43,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:14:43,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:14:43,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721120678] [2024-06-28 04:14:43,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721120678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:14:43,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:14:43,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:14:43,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725394092] [2024-06-28 04:14:43,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:14:43,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:14:43,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:14:43,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:14:43,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:14:43,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 04:14:43,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 417 transitions, 6969 flow. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:43,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:14:43,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 04:14:43,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:14:45,097 INFO L124 PetriNetUnfolderBase]: 2494/4109 cut-off events. [2024-06-28 04:14:45,097 INFO L125 PetriNetUnfolderBase]: For 524035/524048 co-relation queries the response was YES. [2024-06-28 04:14:45,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35817 conditions, 4109 events. 2494/4109 cut-off events. For 524035/524048 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 24861 event pairs, 490 based on Foata normal form. 21/4095 useless extension candidates. Maximal degree in co-relation 35662. Up to 3487 conditions per place. [2024-06-28 04:14:45,152 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 338 selfloop transitions, 52 changer transitions 0/442 dead transitions. [2024-06-28 04:14:45,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 442 transitions, 7859 flow [2024-06-28 04:14:45,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:14:45,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:14:45,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-28 04:14:45,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43197278911564624 [2024-06-28 04:14:45,154 INFO L175 Difference]: Start difference. First operand has 320 places, 417 transitions, 6969 flow. Second operand 7 states and 127 transitions. [2024-06-28 04:14:45,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 442 transitions, 7859 flow [2024-06-28 04:14:46,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 442 transitions, 7585 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 04:14:46,097 INFO L231 Difference]: Finished difference. Result has 319 places, 418 transitions, 6833 flow [2024-06-28 04:14:46,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6695, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6833, PETRI_PLACES=319, PETRI_TRANSITIONS=418} [2024-06-28 04:14:46,097 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 276 predicate places. [2024-06-28 04:14:46,097 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 418 transitions, 6833 flow [2024-06-28 04:14:46,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:46,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:14:46,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:14:46,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 04:14:46,098 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:14:46,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:14:46,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1804399733, now seen corresponding path program 3 times [2024-06-28 04:14:46,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:14:46,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573807730] [2024-06-28 04:14:46,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:14:46,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:14:46,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:14:49,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:14:49,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:14:49,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573807730] [2024-06-28 04:14:49,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573807730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:14:49,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:14:49,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:14:49,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67413771] [2024-06-28 04:14:49,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:14:49,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:14:49,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:14:49,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:14:49,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:14:49,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 04:14:49,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 418 transitions, 6833 flow. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:49,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:14:49,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 04:14:49,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:14:51,084 INFO L124 PetriNetUnfolderBase]: 2531/4152 cut-off events. [2024-06-28 04:14:51,084 INFO L125 PetriNetUnfolderBase]: For 536573/536586 co-relation queries the response was YES. [2024-06-28 04:14:51,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36126 conditions, 4152 events. 2531/4152 cut-off events. For 536573/536586 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 25073 event pairs, 477 based on Foata normal form. 20/4126 useless extension candidates. Maximal degree in co-relation 35970. Up to 3589 conditions per place. [2024-06-28 04:14:51,139 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 328 selfloop transitions, 57 changer transitions 0/437 dead transitions. [2024-06-28 04:14:51,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 437 transitions, 7697 flow [2024-06-28 04:14:51,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:14:51,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:14:51,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-28 04:14:51,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41156462585034015 [2024-06-28 04:14:51,140 INFO L175 Difference]: Start difference. First operand has 319 places, 418 transitions, 6833 flow. Second operand 7 states and 121 transitions. [2024-06-28 04:14:51,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 437 transitions, 7697 flow [2024-06-28 04:14:52,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 437 transitions, 7585 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 04:14:52,384 INFO L231 Difference]: Finished difference. Result has 320 places, 419 transitions, 6863 flow [2024-06-28 04:14:52,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6723, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6863, PETRI_PLACES=320, PETRI_TRANSITIONS=419} [2024-06-28 04:14:52,384 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 277 predicate places. [2024-06-28 04:14:52,385 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 419 transitions, 6863 flow [2024-06-28 04:14:52,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:52,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:14:52,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:14:52,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 04:14:52,385 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:14:52,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:14:52,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1803924503, now seen corresponding path program 4 times [2024-06-28 04:14:52,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:14:52,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331753412] [2024-06-28 04:14:52,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:14:52,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:14:52,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:14:55,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:14:55,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:14:55,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331753412] [2024-06-28 04:14:55,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331753412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:14:55,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:14:55,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:14:55,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131520734] [2024-06-28 04:14:55,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:14:55,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:14:55,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:14:55,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:14:55,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:14:55,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 04:14:55,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 419 transitions, 6863 flow. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:55,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:14:55,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 04:14:55,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:14:57,054 INFO L124 PetriNetUnfolderBase]: 2536/4163 cut-off events. [2024-06-28 04:14:57,054 INFO L125 PetriNetUnfolderBase]: For 506647/506662 co-relation queries the response was YES. [2024-06-28 04:14:57,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35759 conditions, 4163 events. 2536/4163 cut-off events. For 506647/506662 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 25127 event pairs, 467 based on Foata normal form. 16/4129 useless extension candidates. Maximal degree in co-relation 35602. Up to 3460 conditions per place. [2024-06-28 04:14:57,113 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 327 selfloop transitions, 61 changer transitions 0/440 dead transitions. [2024-06-28 04:14:57,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 440 transitions, 7753 flow [2024-06-28 04:14:57,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:14:57,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:14:57,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-28 04:14:57,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41496598639455784 [2024-06-28 04:14:57,115 INFO L175 Difference]: Start difference. First operand has 320 places, 419 transitions, 6863 flow. Second operand 7 states and 122 transitions. [2024-06-28 04:14:57,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 440 transitions, 7753 flow [2024-06-28 04:14:58,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 440 transitions, 7635 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 04:14:58,294 INFO L231 Difference]: Finished difference. Result has 322 places, 420 transitions, 6893 flow [2024-06-28 04:14:58,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6745, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6893, PETRI_PLACES=322, PETRI_TRANSITIONS=420} [2024-06-28 04:14:58,294 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 279 predicate places. [2024-06-28 04:14:58,294 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 420 transitions, 6893 flow [2024-06-28 04:14:58,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:14:58,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:14:58,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:14:58,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 04:14:58,295 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:14:58,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:14:58,295 INFO L85 PathProgramCache]: Analyzing trace with hash -174122607, now seen corresponding path program 1 times [2024-06-28 04:14:58,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:14:58,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077985093] [2024-06-28 04:14:58,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:14:58,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:14:58,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:00,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:00,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:00,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077985093] [2024-06-28 04:15:00,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077985093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:00,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:00,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:15:00,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305742997] [2024-06-28 04:15:00,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:00,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:15:00,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:00,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:15:00,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:15:00,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:15:00,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 420 transitions, 6893 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:00,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:00,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:15:00,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:01,710 INFO L124 PetriNetUnfolderBase]: 2690/4395 cut-off events. [2024-06-28 04:15:01,710 INFO L125 PetriNetUnfolderBase]: For 498764/498767 co-relation queries the response was YES. [2024-06-28 04:15:01,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37156 conditions, 4395 events. 2690/4395 cut-off events. For 498764/498767 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 26403 event pairs, 609 based on Foata normal form. 4/4397 useless extension candidates. Maximal degree in co-relation 36998. Up to 4048 conditions per place. [2024-06-28 04:15:01,766 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 411 selfloop transitions, 30 changer transitions 0/446 dead transitions. [2024-06-28 04:15:01,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 446 transitions, 8069 flow [2024-06-28 04:15:01,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:15:01,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:15:01,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-28 04:15:01,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40816326530612246 [2024-06-28 04:15:01,768 INFO L175 Difference]: Start difference. First operand has 322 places, 420 transitions, 6893 flow. Second operand 7 states and 120 transitions. [2024-06-28 04:15:01,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 446 transitions, 8069 flow [2024-06-28 04:15:03,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 446 transitions, 7937 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 04:15:03,026 INFO L231 Difference]: Finished difference. Result has 324 places, 424 transitions, 6894 flow [2024-06-28 04:15:03,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6761, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6894, PETRI_PLACES=324, PETRI_TRANSITIONS=424} [2024-06-28 04:15:03,026 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 281 predicate places. [2024-06-28 04:15:03,026 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 424 transitions, 6894 flow [2024-06-28 04:15:03,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:03,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:03,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:03,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 04:15:03,027 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:03,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:03,027 INFO L85 PathProgramCache]: Analyzing trace with hash 2122746031, now seen corresponding path program 2 times [2024-06-28 04:15:03,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:03,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019554038] [2024-06-28 04:15:03,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:03,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:03,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:05,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:05,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:05,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019554038] [2024-06-28 04:15:05,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019554038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:05,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:05,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:15:05,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323595278] [2024-06-28 04:15:05,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:05,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:15:05,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:05,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:15:05,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:15:05,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:15:05,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 424 transitions, 6894 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:05,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:05,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:15:05,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:06,607 INFO L124 PetriNetUnfolderBase]: 2698/4399 cut-off events. [2024-06-28 04:15:06,608 INFO L125 PetriNetUnfolderBase]: For 508885/508888 co-relation queries the response was YES. [2024-06-28 04:15:06,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37177 conditions, 4399 events. 2698/4399 cut-off events. For 508885/508888 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 26356 event pairs, 643 based on Foata normal form. 4/4401 useless extension candidates. Maximal degree in co-relation 37018. Up to 4097 conditions per place. [2024-06-28 04:15:06,787 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 410 selfloop transitions, 27 changer transitions 0/442 dead transitions. [2024-06-28 04:15:06,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 442 transitions, 7846 flow [2024-06-28 04:15:06,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:15:06,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:15:06,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 114 transitions. [2024-06-28 04:15:06,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3877551020408163 [2024-06-28 04:15:06,789 INFO L175 Difference]: Start difference. First operand has 324 places, 424 transitions, 6894 flow. Second operand 7 states and 114 transitions. [2024-06-28 04:15:06,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 442 transitions, 7846 flow [2024-06-28 04:15:07,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 442 transitions, 7762 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-28 04:15:08,002 INFO L231 Difference]: Finished difference. Result has 328 places, 426 transitions, 6909 flow [2024-06-28 04:15:08,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6824, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6909, PETRI_PLACES=328, PETRI_TRANSITIONS=426} [2024-06-28 04:15:08,002 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 285 predicate places. [2024-06-28 04:15:08,002 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 426 transitions, 6909 flow [2024-06-28 04:15:08,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:08,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:08,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:08,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 04:15:08,003 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:08,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:08,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1044316527, now seen corresponding path program 3 times [2024-06-28 04:15:08,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:08,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756196943] [2024-06-28 04:15:08,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:08,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:08,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:10,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:10,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:10,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756196943] [2024-06-28 04:15:10,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756196943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:10,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:10,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:15:10,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297359787] [2024-06-28 04:15:10,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:10,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:15:10,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:10,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:15:10,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:15:10,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:15:10,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 426 transitions, 6909 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:10,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:10,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:15:10,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:12,060 INFO L124 PetriNetUnfolderBase]: 2706/4410 cut-off events. [2024-06-28 04:15:12,060 INFO L125 PetriNetUnfolderBase]: For 518991/518991 co-relation queries the response was YES. [2024-06-28 04:15:12,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37328 conditions, 4410 events. 2706/4410 cut-off events. For 518991/518991 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 26447 event pairs, 645 based on Foata normal form. 2/4409 useless extension candidates. Maximal degree in co-relation 37167. Up to 4109 conditions per place. [2024-06-28 04:15:12,124 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 411 selfloop transitions, 29 changer transitions 0/445 dead transitions. [2024-06-28 04:15:12,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 445 transitions, 7859 flow [2024-06-28 04:15:12,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:15:12,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:15:12,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-28 04:15:12,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 04:15:12,125 INFO L175 Difference]: Start difference. First operand has 328 places, 426 transitions, 6909 flow. Second operand 8 states and 126 transitions. [2024-06-28 04:15:12,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 445 transitions, 7859 flow [2024-06-28 04:15:13,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 445 transitions, 7794 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 04:15:13,678 INFO L231 Difference]: Finished difference. Result has 331 places, 428 transitions, 6937 flow [2024-06-28 04:15:13,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6844, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6937, PETRI_PLACES=331, PETRI_TRANSITIONS=428} [2024-06-28 04:15:13,679 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 288 predicate places. [2024-06-28 04:15:13,679 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 428 transitions, 6937 flow [2024-06-28 04:15:13,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:13,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:13,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:13,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 04:15:13,679 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:13,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:13,679 INFO L85 PathProgramCache]: Analyzing trace with hash -55789779, now seen corresponding path program 1 times [2024-06-28 04:15:13,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:13,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552524875] [2024-06-28 04:15:13,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:13,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:13,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:17,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:17,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:17,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552524875] [2024-06-28 04:15:17,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552524875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:17,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:17,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:15:17,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917234956] [2024-06-28 04:15:17,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:17,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:15:17,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:17,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:15:17,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:15:17,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:15:17,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 428 transitions, 6937 flow. Second operand has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 11 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) [2024-06-28 04:15:17,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:17,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:15:17,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:19,010 INFO L124 PetriNetUnfolderBase]: 2714/4408 cut-off events. [2024-06-28 04:15:19,010 INFO L125 PetriNetUnfolderBase]: For 531671/531671 co-relation queries the response was YES. [2024-06-28 04:15:19,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37585 conditions, 4408 events. 2714/4408 cut-off events. For 531671/531671 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 26293 event pairs, 623 based on Foata normal form. 2/4407 useless extension candidates. Maximal degree in co-relation 37423. Up to 4057 conditions per place. [2024-06-28 04:15:19,066 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 394 selfloop transitions, 51 changer transitions 0/450 dead transitions. [2024-06-28 04:15:19,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 450 transitions, 7943 flow [2024-06-28 04:15:19,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:15:19,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:15:19,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-06-28 04:15:19,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3898809523809524 [2024-06-28 04:15:19,067 INFO L175 Difference]: Start difference. First operand has 331 places, 428 transitions, 6937 flow. Second operand 8 states and 131 transitions. [2024-06-28 04:15:19,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 450 transitions, 7943 flow [2024-06-28 04:15:20,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 450 transitions, 7870 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 04:15:20,494 INFO L231 Difference]: Finished difference. Result has 333 places, 430 transitions, 7041 flow [2024-06-28 04:15:20,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6864, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7041, PETRI_PLACES=333, PETRI_TRANSITIONS=430} [2024-06-28 04:15:20,494 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 290 predicate places. [2024-06-28 04:15:20,494 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 430 transitions, 7041 flow [2024-06-28 04:15:20,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 11 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) [2024-06-28 04:15:20,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:20,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:20,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 04:15:20,495 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:20,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:20,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1592159669, now seen corresponding path program 4 times [2024-06-28 04:15:20,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:20,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927632057] [2024-06-28 04:15:20,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:20,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:20,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:22,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:22,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:22,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927632057] [2024-06-28 04:15:22,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927632057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:22,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:22,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 04:15:22,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032557516] [2024-06-28 04:15:22,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:22,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 04:15:22,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:22,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 04:15:22,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 04:15:22,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:15:22,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 430 transitions, 7041 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:22,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:22,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:15:22,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:24,181 INFO L124 PetriNetUnfolderBase]: 2709/4415 cut-off events. [2024-06-28 04:15:24,181 INFO L125 PetriNetUnfolderBase]: For 535448/535448 co-relation queries the response was YES. [2024-06-28 04:15:24,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37644 conditions, 4415 events. 2709/4415 cut-off events. For 535448/535448 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 26421 event pairs, 597 based on Foata normal form. 2/4416 useless extension candidates. Maximal degree in co-relation 37481. Up to 4101 conditions per place. [2024-06-28 04:15:24,233 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 426 selfloop transitions, 23 changer transitions 0/454 dead transitions. [2024-06-28 04:15:24,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 454 transitions, 8005 flow [2024-06-28 04:15:24,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:15:24,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:15:24,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-28 04:15:24,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41836734693877553 [2024-06-28 04:15:24,234 INFO L175 Difference]: Start difference. First operand has 333 places, 430 transitions, 7041 flow. Second operand 7 states and 123 transitions. [2024-06-28 04:15:24,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 454 transitions, 8005 flow [2024-06-28 04:15:25,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 454 transitions, 7832 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-28 04:15:25,594 INFO L231 Difference]: Finished difference. Result has 334 places, 430 transitions, 6922 flow [2024-06-28 04:15:25,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6868, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6922, PETRI_PLACES=334, PETRI_TRANSITIONS=430} [2024-06-28 04:15:25,595 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 291 predicate places. [2024-06-28 04:15:25,595 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 430 transitions, 6922 flow [2024-06-28 04:15:25,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:15:25,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:25,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:25,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 04:15:25,596 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:25,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:25,597 INFO L85 PathProgramCache]: Analyzing trace with hash -2040390581, now seen corresponding path program 2 times [2024-06-28 04:15:25,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:25,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282132778] [2024-06-28 04:15:25,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:25,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:25,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:28,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:28,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:28,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282132778] [2024-06-28 04:15:28,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282132778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:28,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:28,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:15:28,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874705065] [2024-06-28 04:15:28,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:28,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:15:28,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:28,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:15:28,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:15:28,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:15:28,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 430 transitions, 6922 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:15:28,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:28,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:15:28,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:30,450 INFO L124 PetriNetUnfolderBase]: 2717/4431 cut-off events. [2024-06-28 04:15:30,450 INFO L125 PetriNetUnfolderBase]: For 545471/545471 co-relation queries the response was YES. [2024-06-28 04:15:30,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37721 conditions, 4431 events. 2717/4431 cut-off events. For 545471/545471 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 26658 event pairs, 613 based on Foata normal form. 2/4432 useless extension candidates. Maximal degree in co-relation 37557. Up to 4097 conditions per place. [2024-06-28 04:15:30,503 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 418 selfloop transitions, 34 changer transitions 0/457 dead transitions. [2024-06-28 04:15:30,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 457 transitions, 7960 flow [2024-06-28 04:15:30,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:15:30,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:15:30,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 04:15:30,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40773809523809523 [2024-06-28 04:15:30,505 INFO L175 Difference]: Start difference. First operand has 334 places, 430 transitions, 6922 flow. Second operand 8 states and 137 transitions. [2024-06-28 04:15:30,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 457 transitions, 7960 flow [2024-06-28 04:15:31,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 457 transitions, 7900 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 04:15:31,910 INFO L231 Difference]: Finished difference. Result has 336 places, 432 transitions, 7009 flow [2024-06-28 04:15:31,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6862, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7009, PETRI_PLACES=336, PETRI_TRANSITIONS=432} [2024-06-28 04:15:31,910 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 293 predicate places. [2024-06-28 04:15:31,910 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 432 transitions, 7009 flow [2024-06-28 04:15:31,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:15:31,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:31,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:31,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 04:15:31,911 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:31,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:31,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1804215221, now seen corresponding path program 3 times [2024-06-28 04:15:31,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:31,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365162693] [2024-06-28 04:15:31,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:31,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:31,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:35,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:35,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:35,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365162693] [2024-06-28 04:15:35,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365162693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:35,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:35,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:15:35,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880397485] [2024-06-28 04:15:35,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:35,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:15:35,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:35,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:15:35,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:15:35,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:15:35,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 432 transitions, 7009 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:15:35,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:35,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:15:35,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:36,984 INFO L124 PetriNetUnfolderBase]: 2725/4439 cut-off events. [2024-06-28 04:15:36,984 INFO L125 PetriNetUnfolderBase]: For 559828/559828 co-relation queries the response was YES. [2024-06-28 04:15:37,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38108 conditions, 4439 events. 2725/4439 cut-off events. For 559828/559828 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 26621 event pairs, 616 based on Foata normal form. 2/4440 useless extension candidates. Maximal degree in co-relation 37943. Up to 4109 conditions per place. [2024-06-28 04:15:37,042 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 417 selfloop transitions, 33 changer transitions 0/455 dead transitions. [2024-06-28 04:15:37,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 455 transitions, 8035 flow [2024-06-28 04:15:37,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:15:37,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:15:37,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-28 04:15:37,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37566137566137564 [2024-06-28 04:15:37,043 INFO L175 Difference]: Start difference. First operand has 336 places, 432 transitions, 7009 flow. Second operand 9 states and 142 transitions. [2024-06-28 04:15:37,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 455 transitions, 8035 flow [2024-06-28 04:15:38,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 455 transitions, 7904 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-28 04:15:38,459 INFO L231 Difference]: Finished difference. Result has 339 places, 434 transitions, 7027 flow [2024-06-28 04:15:38,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6878, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7027, PETRI_PLACES=339, PETRI_TRANSITIONS=434} [2024-06-28 04:15:38,459 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 296 predicate places. [2024-06-28 04:15:38,460 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 434 transitions, 7027 flow [2024-06-28 04:15:38,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:15:38,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:38,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:38,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 04:15:38,460 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:38,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:38,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1803918551, now seen corresponding path program 4 times [2024-06-28 04:15:38,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:38,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714724723] [2024-06-28 04:15:38,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:38,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:38,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:41,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:41,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:41,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714724723] [2024-06-28 04:15:41,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714724723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:41,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:41,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:15:41,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236681960] [2024-06-28 04:15:41,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:41,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:15:41,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:41,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:15:41,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:15:41,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:15:41,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 434 transitions, 7027 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:15:41,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:41,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:15:41,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:43,530 INFO L124 PetriNetUnfolderBase]: 2779/4521 cut-off events. [2024-06-28 04:15:43,530 INFO L125 PetriNetUnfolderBase]: For 604815/604815 co-relation queries the response was YES. [2024-06-28 04:15:43,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39411 conditions, 4521 events. 2779/4521 cut-off events. For 604815/604815 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 27090 event pairs, 618 based on Foata normal form. 2/4522 useless extension candidates. Maximal degree in co-relation 39245. Up to 4088 conditions per place. [2024-06-28 04:15:43,592 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 421 selfloop transitions, 37 changer transitions 0/463 dead transitions. [2024-06-28 04:15:43,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 463 transitions, 8321 flow [2024-06-28 04:15:43,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:15:43,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:15:43,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-28 04:15:43,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-28 04:15:43,593 INFO L175 Difference]: Start difference. First operand has 339 places, 434 transitions, 7027 flow. Second operand 9 states and 147 transitions. [2024-06-28 04:15:43,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 463 transitions, 8321 flow [2024-06-28 04:15:45,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 463 transitions, 8188 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-28 04:15:45,228 INFO L231 Difference]: Finished difference. Result has 341 places, 437 transitions, 7077 flow [2024-06-28 04:15:45,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6894, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7077, PETRI_PLACES=341, PETRI_TRANSITIONS=437} [2024-06-28 04:15:45,228 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 298 predicate places. [2024-06-28 04:15:45,228 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 437 transitions, 7077 flow [2024-06-28 04:15:45,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:15:45,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:45,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:45,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 04:15:45,229 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:45,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:45,229 INFO L85 PathProgramCache]: Analyzing trace with hash -2103371836, now seen corresponding path program 1 times [2024-06-28 04:15:45,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:45,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91592955] [2024-06-28 04:15:45,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:45,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:45,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:47,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:47,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:47,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91592955] [2024-06-28 04:15:47,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91592955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:47,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:47,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:15:47,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626524279] [2024-06-28 04:15:47,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:47,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:15:47,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:47,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:15:47,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:15:47,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:15:47,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 437 transitions, 7077 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:15:47,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:47,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:15:47,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:49,242 INFO L124 PetriNetUnfolderBase]: 2951/4789 cut-off events. [2024-06-28 04:15:49,242 INFO L125 PetriNetUnfolderBase]: For 682866/682872 co-relation queries the response was YES. [2024-06-28 04:15:49,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41840 conditions, 4789 events. 2951/4789 cut-off events. For 682866/682872 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 28947 event pairs, 618 based on Foata normal form. 14/4802 useless extension candidates. Maximal degree in co-relation 41673. Up to 4205 conditions per place. [2024-06-28 04:15:49,310 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 433 selfloop transitions, 74 changer transitions 0/512 dead transitions. [2024-06-28 04:15:49,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 512 transitions, 8753 flow [2024-06-28 04:15:49,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 04:15:49,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 04:15:49,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 222 transitions. [2024-06-28 04:15:49,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065934065934066 [2024-06-28 04:15:49,312 INFO L175 Difference]: Start difference. First operand has 341 places, 437 transitions, 7077 flow. Second operand 13 states and 222 transitions. [2024-06-28 04:15:49,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 512 transitions, 8753 flow [2024-06-28 04:15:51,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 512 transitions, 8638 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-28 04:15:51,091 INFO L231 Difference]: Finished difference. Result has 352 places, 454 transitions, 7429 flow [2024-06-28 04:15:51,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6962, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7429, PETRI_PLACES=352, PETRI_TRANSITIONS=454} [2024-06-28 04:15:51,091 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 309 predicate places. [2024-06-28 04:15:51,091 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 454 transitions, 7429 flow [2024-06-28 04:15:51,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:15:51,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:51,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:51,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 04:15:51,092 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:51,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:51,092 INFO L85 PathProgramCache]: Analyzing trace with hash -999833034, now seen corresponding path program 2 times [2024-06-28 04:15:51,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:51,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200346922] [2024-06-28 04:15:51,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:51,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:51,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:15:54,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:15:54,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:15:54,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200346922] [2024-06-28 04:15:54,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200346922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:15:54,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:15:54,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:15:54,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020693371] [2024-06-28 04:15:54,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:15:54,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:15:54,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:15:54,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:15:54,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:15:54,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:15:54,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 454 transitions, 7429 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:15:54,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:15:54,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:15:54,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:15:56,547 INFO L124 PetriNetUnfolderBase]: 3019/4905 cut-off events. [2024-06-28 04:15:56,547 INFO L125 PetriNetUnfolderBase]: For 697663/697667 co-relation queries the response was YES. [2024-06-28 04:15:56,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43049 conditions, 4905 events. 3019/4905 cut-off events. For 697663/697667 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 29720 event pairs, 535 based on Foata normal form. 12/4916 useless extension candidates. Maximal degree in co-relation 42877. Up to 4071 conditions per place. [2024-06-28 04:15:56,622 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 419 selfloop transitions, 79 changer transitions 0/503 dead transitions. [2024-06-28 04:15:56,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 503 transitions, 8839 flow [2024-06-28 04:15:56,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:15:56,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:15:56,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-28 04:15:56,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4069264069264069 [2024-06-28 04:15:56,623 INFO L175 Difference]: Start difference. First operand has 352 places, 454 transitions, 7429 flow. Second operand 11 states and 188 transitions. [2024-06-28 04:15:56,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 503 transitions, 8839 flow [2024-06-28 04:15:58,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 503 transitions, 8729 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-28 04:15:58,331 INFO L231 Difference]: Finished difference. Result has 359 places, 457 transitions, 7570 flow [2024-06-28 04:15:58,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7319, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7570, PETRI_PLACES=359, PETRI_TRANSITIONS=457} [2024-06-28 04:15:58,332 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 316 predicate places. [2024-06-28 04:15:58,332 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 457 transitions, 7570 flow [2024-06-28 04:15:58,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:15:58,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:15:58,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:15:58,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 04:15:58,332 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:15:58,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:15:58,333 INFO L85 PathProgramCache]: Analyzing trace with hash 501897650, now seen corresponding path program 3 times [2024-06-28 04:15:58,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:15:58,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794858957] [2024-06-28 04:15:58,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:15:58,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:15:58,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:01,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:16:01,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:01,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794858957] [2024-06-28 04:16:01,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794858957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:01,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:01,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:16:01,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109577491] [2024-06-28 04:16:01,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:01,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:16:01,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:01,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:16:01,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:16:01,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:16:01,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 457 transitions, 7570 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:16:01,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:01,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:16:01,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:04,085 INFO L124 PetriNetUnfolderBase]: 3093/5029 cut-off events. [2024-06-28 04:16:04,085 INFO L125 PetriNetUnfolderBase]: For 711596/711600 co-relation queries the response was YES. [2024-06-28 04:16:04,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43696 conditions, 5029 events. 3093/5029 cut-off events. For 711596/711600 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 30712 event pairs, 655 based on Foata normal form. 20/5048 useless extension candidates. Maximal degree in co-relation 43522. Up to 4427 conditions per place. [2024-06-28 04:16:04,147 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 427 selfloop transitions, 81 changer transitions 0/513 dead transitions. [2024-06-28 04:16:04,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 513 transitions, 9033 flow [2024-06-28 04:16:04,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 04:16:04,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 04:16:04,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 195 transitions. [2024-06-28 04:16:04,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3869047619047619 [2024-06-28 04:16:04,148 INFO L175 Difference]: Start difference. First operand has 359 places, 457 transitions, 7570 flow. Second operand 12 states and 195 transitions. [2024-06-28 04:16:04,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 513 transitions, 9033 flow [2024-06-28 04:16:05,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 513 transitions, 8816 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-28 04:16:05,942 INFO L231 Difference]: Finished difference. Result has 363 places, 471 transitions, 7834 flow [2024-06-28 04:16:05,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7376, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7834, PETRI_PLACES=363, PETRI_TRANSITIONS=471} [2024-06-28 04:16:05,943 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 320 predicate places. [2024-06-28 04:16:05,943 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 471 transitions, 7834 flow [2024-06-28 04:16:05,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:16:05,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:05,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:05,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 04:16:05,943 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:16:05,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:05,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1353067496, now seen corresponding path program 4 times [2024-06-28 04:16:05,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:05,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599772660] [2024-06-28 04:16:05,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:05,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:05,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:09,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:16:09,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:09,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599772660] [2024-06-28 04:16:09,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599772660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:09,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:09,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:16:09,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572396940] [2024-06-28 04:16:09,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:09,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:16:09,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:09,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:16:09,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:16:09,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:16:09,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 471 transitions, 7834 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:16:09,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:09,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:16:09,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:11,323 INFO L124 PetriNetUnfolderBase]: 3129/5072 cut-off events. [2024-06-28 04:16:11,323 INFO L125 PetriNetUnfolderBase]: For 675205/675205 co-relation queries the response was YES. [2024-06-28 04:16:11,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43847 conditions, 5072 events. 3129/5072 cut-off events. For 675205/675205 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 30831 event pairs, 602 based on Foata normal form. 8/5079 useless extension candidates. Maximal degree in co-relation 43673. Up to 4559 conditions per place. [2024-06-28 04:16:11,400 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 430 selfloop transitions, 76 changer transitions 0/511 dead transitions. [2024-06-28 04:16:11,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 511 transitions, 9066 flow [2024-06-28 04:16:11,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 04:16:11,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 04:16:11,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 190 transitions. [2024-06-28 04:16:11,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.376984126984127 [2024-06-28 04:16:11,401 INFO L175 Difference]: Start difference. First operand has 363 places, 471 transitions, 7834 flow. Second operand 12 states and 190 transitions. [2024-06-28 04:16:11,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 511 transitions, 9066 flow [2024-06-28 04:16:13,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 511 transitions, 8959 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 04:16:13,452 INFO L231 Difference]: Finished difference. Result has 373 places, 476 transitions, 8023 flow [2024-06-28 04:16:13,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7729, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8023, PETRI_PLACES=373, PETRI_TRANSITIONS=476} [2024-06-28 04:16:13,452 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 330 predicate places. [2024-06-28 04:16:13,452 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 476 transitions, 8023 flow [2024-06-28 04:16:13,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:16:13,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:13,453 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] [2024-06-28 04:16:13,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 04:16:13,453 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:16:13,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:13,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1833799554, now seen corresponding path program 1 times [2024-06-28 04:16:13,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:13,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404827093] [2024-06-28 04:16:13,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:13,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:16,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:16:16,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:16,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404827093] [2024-06-28 04:16:16,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404827093] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:16,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:16,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:16:16,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406384292] [2024-06-28 04:16:16,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:16,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:16:16,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:16,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:16:16,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:16:16,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:16:16,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 476 transitions, 8023 flow. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:16,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:16,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:16:16,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:18,238 INFO L124 PetriNetUnfolderBase]: 3134/5086 cut-off events. [2024-06-28 04:16:18,238 INFO L125 PetriNetUnfolderBase]: For 655848/655852 co-relation queries the response was YES. [2024-06-28 04:16:18,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44060 conditions, 5086 events. 3134/5086 cut-off events. For 655848/655852 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 31014 event pairs, 726 based on Foata normal form. 5/5090 useless extension candidates. Maximal degree in co-relation 43882. Up to 4620 conditions per place. [2024-06-28 04:16:18,317 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 422 selfloop transitions, 88 changer transitions 0/515 dead transitions. [2024-06-28 04:16:18,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 515 transitions, 9397 flow [2024-06-28 04:16:18,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:16:18,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:16:18,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-28 04:16:18,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-06-28 04:16:18,318 INFO L175 Difference]: Start difference. First operand has 373 places, 476 transitions, 8023 flow. Second operand 9 states and 161 transitions. [2024-06-28 04:16:18,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 515 transitions, 9397 flow [2024-06-28 04:16:20,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 515 transitions, 9222 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 04:16:20,505 INFO L231 Difference]: Finished difference. Result has 375 places, 479 transitions, 8083 flow [2024-06-28 04:16:20,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7848, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8083, PETRI_PLACES=375, PETRI_TRANSITIONS=479} [2024-06-28 04:16:20,505 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 332 predicate places. [2024-06-28 04:16:20,505 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 479 transitions, 8083 flow [2024-06-28 04:16:20,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:20,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:20,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:20,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 04:16:20,505 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:16:20,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:20,506 INFO L85 PathProgramCache]: Analyzing trace with hash 583146356, now seen corresponding path program 1 times [2024-06-28 04:16:20,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:20,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660361354] [2024-06-28 04:16:20,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:20,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:20,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:24,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:16:24,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:24,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660361354] [2024-06-28 04:16:24,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660361354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:24,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:24,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:16:24,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817403801] [2024-06-28 04:16:24,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:24,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:16:24,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:24,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:16:24,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:16:24,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:16:24,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 479 transitions, 8083 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:16:24,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:24,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:16:24,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:26,613 INFO L124 PetriNetUnfolderBase]: 3160/5130 cut-off events. [2024-06-28 04:16:26,614 INFO L125 PetriNetUnfolderBase]: For 682060/682064 co-relation queries the response was YES. [2024-06-28 04:16:26,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44496 conditions, 5130 events. 3160/5130 cut-off events. For 682060/682064 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 31380 event pairs, 687 based on Foata normal form. 6/5135 useless extension candidates. Maximal degree in co-relation 44317. Up to 4457 conditions per place. [2024-06-28 04:16:26,685 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 385 selfloop transitions, 140 changer transitions 0/530 dead transitions. [2024-06-28 04:16:26,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 530 transitions, 9797 flow [2024-06-28 04:16:26,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 04:16:26,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 04:16:26,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 205 transitions. [2024-06-28 04:16:26,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40674603174603174 [2024-06-28 04:16:26,686 INFO L175 Difference]: Start difference. First operand has 375 places, 479 transitions, 8083 flow. Second operand 12 states and 205 transitions. [2024-06-28 04:16:26,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 530 transitions, 9797 flow [2024-06-28 04:16:28,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 530 transitions, 9603 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 04:16:28,733 INFO L231 Difference]: Finished difference. Result has 381 places, 485 transitions, 8371 flow [2024-06-28 04:16:28,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7889, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8371, PETRI_PLACES=381, PETRI_TRANSITIONS=485} [2024-06-28 04:16:28,733 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 338 predicate places. [2024-06-28 04:16:28,733 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 485 transitions, 8371 flow [2024-06-28 04:16:28,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:16:28,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:28,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:28,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 04:16:28,734 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:16:28,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:28,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1833679584, now seen corresponding path program 2 times [2024-06-28 04:16:28,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:28,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885548860] [2024-06-28 04:16:28,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:28,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:28,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:32,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:16:32,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:32,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885548860] [2024-06-28 04:16:32,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885548860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:32,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:32,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:16:32,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111625172] [2024-06-28 04:16:32,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:32,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:16:32,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:32,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:16:32,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:16:32,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:16:32,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 485 transitions, 8371 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:16:32,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:32,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:16:32,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:34,388 INFO L124 PetriNetUnfolderBase]: 3157/5122 cut-off events. [2024-06-28 04:16:34,388 INFO L125 PetriNetUnfolderBase]: For 690418/690422 co-relation queries the response was YES. [2024-06-28 04:16:34,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45309 conditions, 5122 events. 3157/5122 cut-off events. For 690418/690422 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 31299 event pairs, 729 based on Foata normal form. 5/5126 useless extension candidates. Maximal degree in co-relation 45128. Up to 4653 conditions per place. [2024-06-28 04:16:34,471 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 428 selfloop transitions, 88 changer transitions 0/521 dead transitions. [2024-06-28 04:16:34,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 521 transitions, 9511 flow [2024-06-28 04:16:34,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:16:34,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:16:34,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-28 04:16:34,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4095238095238095 [2024-06-28 04:16:34,473 INFO L175 Difference]: Start difference. First operand has 381 places, 485 transitions, 8371 flow. Second operand 10 states and 172 transitions. [2024-06-28 04:16:34,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 521 transitions, 9511 flow [2024-06-28 04:16:36,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 521 transitions, 9232 flow, removed 89 selfloop flow, removed 7 redundant places. [2024-06-28 04:16:36,905 INFO L231 Difference]: Finished difference. Result has 384 places, 485 transitions, 8274 flow [2024-06-28 04:16:36,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8092, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8274, PETRI_PLACES=384, PETRI_TRANSITIONS=485} [2024-06-28 04:16:36,905 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 341 predicate places. [2024-06-28 04:16:36,905 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 485 transitions, 8274 flow [2024-06-28 04:16:36,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:16:36,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:36,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:36,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 04:16:36,906 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:16:36,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:36,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1092755890, now seen corresponding path program 3 times [2024-06-28 04:16:36,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:36,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511308765] [2024-06-28 04:16:36,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:36,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:36,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:40,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:16:40,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:40,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511308765] [2024-06-28 04:16:40,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511308765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:40,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:40,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:16:40,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553604225] [2024-06-28 04:16:40,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:40,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:16:40,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:40,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:16:40,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:16:40,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:16:40,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 485 transitions, 8274 flow. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:40,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:40,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:16:40,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:42,823 INFO L124 PetriNetUnfolderBase]: 3202/5181 cut-off events. [2024-06-28 04:16:42,823 INFO L125 PetriNetUnfolderBase]: For 728391/728391 co-relation queries the response was YES. [2024-06-28 04:16:42,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46446 conditions, 5181 events. 3202/5181 cut-off events. For 728391/728391 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 31632 event pairs, 656 based on Foata normal form. 1/5178 useless extension candidates. Maximal degree in co-relation 46263. Up to 4419 conditions per place. [2024-06-28 04:16:42,892 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 343 selfloop transitions, 185 changer transitions 0/533 dead transitions. [2024-06-28 04:16:42,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 533 transitions, 10401 flow [2024-06-28 04:16:42,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:16:42,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:16:42,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-28 04:16:42,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-06-28 04:16:42,893 INFO L175 Difference]: Start difference. First operand has 384 places, 485 transitions, 8274 flow. Second operand 8 states and 148 transitions. [2024-06-28 04:16:42,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 533 transitions, 10401 flow [2024-06-28 04:16:45,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 533 transitions, 10171 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-28 04:16:45,036 INFO L231 Difference]: Finished difference. Result has 382 places, 503 transitions, 8803 flow [2024-06-28 04:16:45,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8044, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8803, PETRI_PLACES=382, PETRI_TRANSITIONS=503} [2024-06-28 04:16:45,036 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 339 predicate places. [2024-06-28 04:16:45,036 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 503 transitions, 8803 flow [2024-06-28 04:16:45,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:45,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:45,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:45,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 04:16:45,037 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:16:45,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:45,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1626574918, now seen corresponding path program 1 times [2024-06-28 04:16:45,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:45,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098557927] [2024-06-28 04:16:45,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:45,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:48,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:16:48,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:48,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098557927] [2024-06-28 04:16:48,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098557927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:48,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:48,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:16:48,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243422104] [2024-06-28 04:16:48,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:48,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:16:48,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:48,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:16:48,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:16:48,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:16:48,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 503 transitions, 8803 flow. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:48,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:48,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:16:48,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:50,592 INFO L124 PetriNetUnfolderBase]: 3244/5253 cut-off events. [2024-06-28 04:16:50,593 INFO L125 PetriNetUnfolderBase]: For 765949/765953 co-relation queries the response was YES. [2024-06-28 04:16:50,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47480 conditions, 5253 events. 3244/5253 cut-off events. For 765949/765953 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 32115 event pairs, 748 based on Foata normal form. 6/5255 useless extension candidates. Maximal degree in co-relation 47297. Up to 4629 conditions per place. [2024-06-28 04:16:50,682 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 404 selfloop transitions, 133 changer transitions 0/542 dead transitions. [2024-06-28 04:16:50,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 542 transitions, 10535 flow [2024-06-28 04:16:50,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:16:50,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:16:50,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-28 04:16:50,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4023809523809524 [2024-06-28 04:16:50,684 INFO L175 Difference]: Start difference. First operand has 382 places, 503 transitions, 8803 flow. Second operand 10 states and 169 transitions. [2024-06-28 04:16:50,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 542 transitions, 10535 flow [2024-06-28 04:16:53,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 542 transitions, 10258 flow, removed 56 selfloop flow, removed 3 redundant places. [2024-06-28 04:16:53,562 INFO L231 Difference]: Finished difference. Result has 389 places, 512 transitions, 8970 flow [2024-06-28 04:16:53,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8526, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8970, PETRI_PLACES=389, PETRI_TRANSITIONS=512} [2024-06-28 04:16:53,563 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 346 predicate places. [2024-06-28 04:16:53,563 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 512 transitions, 8970 flow [2024-06-28 04:16:53,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:16:53,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:16:53,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:16:53,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 04:16:53,563 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:16:53,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:16:53,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1740226716, now seen corresponding path program 4 times [2024-06-28 04:16:53,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:16:53,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529388016] [2024-06-28 04:16:53,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:16:53,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:16:53,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:16:57,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:16:57,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:16:57,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529388016] [2024-06-28 04:16:57,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529388016] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:16:57,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:16:57,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:16:57,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757892436] [2024-06-28 04:16:57,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:16:57,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:16:57,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:16:57,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:16:57,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:16:57,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:16:57,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 512 transitions, 8970 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:16:57,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:16:57,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:16:57,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:16:59,548 INFO L124 PetriNetUnfolderBase]: 3265/5285 cut-off events. [2024-06-28 04:16:59,548 INFO L125 PetriNetUnfolderBase]: For 786425/786425 co-relation queries the response was YES. [2024-06-28 04:16:59,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47984 conditions, 5285 events. 3265/5285 cut-off events. For 786425/786425 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 32416 event pairs, 665 based on Foata normal form. 1/5281 useless extension candidates. Maximal degree in co-relation 47800. Up to 4501 conditions per place. [2024-06-28 04:16:59,644 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 352 selfloop transitions, 198 changer transitions 0/555 dead transitions. [2024-06-28 04:16:59,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 555 transitions, 10775 flow [2024-06-28 04:16:59,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:16:59,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:16:59,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-28 04:16:59,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43386243386243384 [2024-06-28 04:16:59,646 INFO L175 Difference]: Start difference. First operand has 389 places, 512 transitions, 8970 flow. Second operand 9 states and 164 transitions. [2024-06-28 04:16:59,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 555 transitions, 10775 flow [2024-06-28 04:17:02,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 555 transitions, 10544 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 04:17:02,146 INFO L231 Difference]: Finished difference. Result has 392 places, 521 transitions, 9336 flow [2024-06-28 04:17:02,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8739, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9336, PETRI_PLACES=392, PETRI_TRANSITIONS=521} [2024-06-28 04:17:02,146 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 349 predicate places. [2024-06-28 04:17:02,146 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 521 transitions, 9336 flow [2024-06-28 04:17:02,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:17:02,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:17:02,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:17:02,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 04:17:02,146 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:17:02,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:17:02,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1745887626, now seen corresponding path program 5 times [2024-06-28 04:17:02,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:17:02,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817511399] [2024-06-28 04:17:02,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:17:02,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:17:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:17:05,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:17:05,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:17:05,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817511399] [2024-06-28 04:17:05,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817511399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:17:05,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:17:05,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:17:05,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064023518] [2024-06-28 04:17:05,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:17:05,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:17:05,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:17:05,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:17:05,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:17:05,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:17:05,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 521 transitions, 9336 flow. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:05,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:17:05,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:17:05,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:17:08,000 INFO L124 PetriNetUnfolderBase]: 3278/5310 cut-off events. [2024-06-28 04:17:08,000 INFO L125 PetriNetUnfolderBase]: For 808591/808591 co-relation queries the response was YES. [2024-06-28 04:17:08,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48582 conditions, 5310 events. 3278/5310 cut-off events. For 808591/808591 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 32630 event pairs, 665 based on Foata normal form. 1/5307 useless extension candidates. Maximal degree in co-relation 48397. Up to 4516 conditions per place. [2024-06-28 04:17:08,090 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 349 selfloop transitions, 199 changer transitions 0/553 dead transitions. [2024-06-28 04:17:08,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 553 transitions, 11242 flow [2024-06-28 04:17:08,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:17:08,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:17:08,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 04:17:08,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 04:17:08,092 INFO L175 Difference]: Start difference. First operand has 392 places, 521 transitions, 9336 flow. Second operand 8 states and 144 transitions. [2024-06-28 04:17:08,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 553 transitions, 11242 flow [2024-06-28 04:17:10,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 553 transitions, 10744 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-06-28 04:17:10,060 INFO L231 Difference]: Finished difference. Result has 394 places, 527 transitions, 9360 flow [2024-06-28 04:17:10,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8850, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9360, PETRI_PLACES=394, PETRI_TRANSITIONS=527} [2024-06-28 04:17:10,061 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 351 predicate places. [2024-06-28 04:17:10,061 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 527 transitions, 9360 flow [2024-06-28 04:17:10,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:17:10,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:17:10,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:17:10,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 04:17:10,061 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:17:10,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:17:10,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1740346872, now seen corresponding path program 2 times [2024-06-28 04:17:10,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:17:10,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625258902] [2024-06-28 04:17:10,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:17:10,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:17:10,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:17:14,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:17:14,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:17:14,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625258902] [2024-06-28 04:17:14,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625258902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:17:14,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:17:14,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:17:14,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135688412] [2024-06-28 04:17:14,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:17:14,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:17:14,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:17:14,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:17:14,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:17:14,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:17:14,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 527 transitions, 9360 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:17:14,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:17:14,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:17:14,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:17:16,899 INFO L124 PetriNetUnfolderBase]: 3336/5387 cut-off events. [2024-06-28 04:17:16,899 INFO L125 PetriNetUnfolderBase]: For 865856/865856 co-relation queries the response was YES. [2024-06-28 04:17:16,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50146 conditions, 5387 events. 3336/5387 cut-off events. For 865856/865856 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 33026 event pairs, 645 based on Foata normal form. 2/5384 useless extension candidates. Maximal degree in co-relation 49960. Up to 4093 conditions per place. [2024-06-28 04:17:16,990 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 270 selfloop transitions, 301 changer transitions 0/576 dead transitions. [2024-06-28 04:17:16,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 576 transitions, 11746 flow [2024-06-28 04:17:16,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 04:17:16,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 04:17:16,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 205 transitions. [2024-06-28 04:17:16,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40674603174603174 [2024-06-28 04:17:16,992 INFO L175 Difference]: Start difference. First operand has 394 places, 527 transitions, 9360 flow. Second operand 12 states and 205 transitions. [2024-06-28 04:17:16,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 576 transitions, 11746 flow [2024-06-28 04:17:19,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 576 transitions, 11422 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-28 04:17:19,795 INFO L231 Difference]: Finished difference. Result has 404 places, 536 transitions, 10028 flow [2024-06-28 04:17:19,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9036, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=294, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10028, PETRI_PLACES=404, PETRI_TRANSITIONS=536} [2024-06-28 04:17:19,795 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 361 predicate places. [2024-06-28 04:17:19,795 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 536 transitions, 10028 flow [2024-06-28 04:17:19,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:17:19,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:17:19,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:17:19,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 04:17:19,796 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:17:19,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:17:19,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1740346686, now seen corresponding path program 6 times [2024-06-28 04:17:19,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:17:19,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999075281] [2024-06-28 04:17:19,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:17:19,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:17:19,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:17:23,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:17:23,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:17:23,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999075281] [2024-06-28 04:17:23,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999075281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:17:23,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:17:23,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:17:23,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868767081] [2024-06-28 04:17:23,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:17:23,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:17:23,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:17:23,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:17:23,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:17:23,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:17:23,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 536 transitions, 10028 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:17:23,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:17:23,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:17:23,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:17:25,889 INFO L124 PetriNetUnfolderBase]: 3341/5400 cut-off events. [2024-06-28 04:17:25,889 INFO L125 PetriNetUnfolderBase]: For 885450/885450 co-relation queries the response was YES. [2024-06-28 04:17:25,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51614 conditions, 5400 events. 3341/5400 cut-off events. For 885450/885450 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 33228 event pairs, 672 based on Foata normal form. 1/5396 useless extension candidates. Maximal degree in co-relation 51425. Up to 4602 conditions per place. [2024-06-28 04:17:25,994 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 356 selfloop transitions, 207 changer transitions 0/568 dead transitions. [2024-06-28 04:17:25,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 568 transitions, 11504 flow [2024-06-28 04:17:25,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:17:25,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:17:25,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 04:17:25,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41798941798941797 [2024-06-28 04:17:25,995 INFO L175 Difference]: Start difference. First operand has 404 places, 536 transitions, 10028 flow. Second operand 9 states and 158 transitions. [2024-06-28 04:17:25,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 568 transitions, 11504 flow [2024-06-28 04:17:28,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 568 transitions, 11101 flow, removed 75 selfloop flow, removed 6 redundant places. [2024-06-28 04:17:28,829 INFO L231 Difference]: Finished difference. Result has 407 places, 539 transitions, 10099 flow [2024-06-28 04:17:28,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9628, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10099, PETRI_PLACES=407, PETRI_TRANSITIONS=539} [2024-06-28 04:17:28,830 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 364 predicate places. [2024-06-28 04:17:28,830 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 539 transitions, 10099 flow [2024-06-28 04:17:28,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:17:28,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:17:28,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:17:28,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 04:17:28,831 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:17:28,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:17:28,831 INFO L85 PathProgramCache]: Analyzing trace with hash -383612814, now seen corresponding path program 3 times [2024-06-28 04:17:28,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:17:28,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537507504] [2024-06-28 04:17:28,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:17:28,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:17:28,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:17:32,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:17:32,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:17:32,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537507504] [2024-06-28 04:17:32,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537507504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:17:32,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:17:32,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:17:32,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935490839] [2024-06-28 04:17:32,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:17:32,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:17:32,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:17:32,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:17:32,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:17:32,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:17:32,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 539 transitions, 10099 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:17:32,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:17:32,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:17:32,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:17:34,594 INFO L124 PetriNetUnfolderBase]: 3367/5440 cut-off events. [2024-06-28 04:17:34,594 INFO L125 PetriNetUnfolderBase]: For 914045/914045 co-relation queries the response was YES. [2024-06-28 04:17:34,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52196 conditions, 5440 events. 3367/5440 cut-off events. For 914045/914045 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 33449 event pairs, 645 based on Foata normal form. 2/5437 useless extension candidates. Maximal degree in co-relation 52005. Up to 4112 conditions per place. [2024-06-28 04:17:34,683 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 270 selfloop transitions, 305 changer transitions 0/580 dead transitions. [2024-06-28 04:17:34,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 580 transitions, 12389 flow [2024-06-28 04:17:34,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:17:34,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:17:34,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-28 04:17:34,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41125541125541126 [2024-06-28 04:17:34,684 INFO L175 Difference]: Start difference. First operand has 407 places, 539 transitions, 10099 flow. Second operand 11 states and 190 transitions. [2024-06-28 04:17:34,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 580 transitions, 12389 flow [2024-06-28 04:17:37,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 580 transitions, 12123 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 04:17:37,912 INFO L231 Difference]: Finished difference. Result has 412 places, 545 transitions, 10589 flow [2024-06-28 04:17:37,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9833, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=299, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10589, PETRI_PLACES=412, PETRI_TRANSITIONS=545} [2024-06-28 04:17:37,912 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 369 predicate places. [2024-06-28 04:17:37,912 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 545 transitions, 10589 flow [2024-06-28 04:17:37,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:17:37,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:17:37,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:17:37,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 04:17:37,912 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:17:37,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:17:37,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1749601302, now seen corresponding path program 4 times [2024-06-28 04:17:37,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:17:37,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785110672] [2024-06-28 04:17:37,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:17:37,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:17:37,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:17:41,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:17:41,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:17:41,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785110672] [2024-06-28 04:17:41,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785110672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:17:41,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:17:41,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:17:41,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413026673] [2024-06-28 04:17:41,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:17:41,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:17:41,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:17:41,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:17:41,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:17:41,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:17:41,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 545 transitions, 10589 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:17:41,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:17:41,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:17:41,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:17:43,550 INFO L124 PetriNetUnfolderBase]: 3361/5424 cut-off events. [2024-06-28 04:17:43,550 INFO L125 PetriNetUnfolderBase]: For 925557/925557 co-relation queries the response was YES. [2024-06-28 04:17:43,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52490 conditions, 5424 events. 3361/5424 cut-off events. For 925557/925557 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 33258 event pairs, 641 based on Foata normal form. 2/5421 useless extension candidates. Maximal degree in co-relation 52298. Up to 4109 conditions per place. [2024-06-28 04:17:43,649 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 271 selfloop transitions, 306 changer transitions 0/582 dead transitions. [2024-06-28 04:17:43,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 582 transitions, 12541 flow [2024-06-28 04:17:43,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 04:17:43,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 04:17:43,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 214 transitions. [2024-06-28 04:17:43,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39194139194139194 [2024-06-28 04:17:43,650 INFO L175 Difference]: Start difference. First operand has 412 places, 545 transitions, 10589 flow. Second operand 13 states and 214 transitions. [2024-06-28 04:17:43,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 582 transitions, 12541 flow [2024-06-28 04:17:47,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 582 transitions, 11891 flow, removed 52 selfloop flow, removed 7 redundant places. [2024-06-28 04:17:47,312 INFO L231 Difference]: Finished difference. Result has 418 places, 545 transitions, 10557 flow [2024-06-28 04:17:47,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9939, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=306, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10557, PETRI_PLACES=418, PETRI_TRANSITIONS=545} [2024-06-28 04:17:47,312 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 375 predicate places. [2024-06-28 04:17:47,312 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 545 transitions, 10557 flow [2024-06-28 04:17:47,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:17:47,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:17:47,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:17:47,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 04:17:47,312 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:17:47,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:17:47,314 INFO L85 PathProgramCache]: Analyzing trace with hash -128528894, now seen corresponding path program 2 times [2024-06-28 04:17:47,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:17:47,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238433450] [2024-06-28 04:17:47,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:17:47,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:17:47,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:17:51,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:17:51,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:17:51,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238433450] [2024-06-28 04:17:51,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238433450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:17:51,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:17:51,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:17:51,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250130917] [2024-06-28 04:17:51,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:17:51,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:17:51,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:17:51,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:17:51,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:17:51,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:17:51,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 545 transitions, 10557 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:17:51,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:17:51,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:17:51,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:17:53,751 INFO L124 PetriNetUnfolderBase]: 3387/5471 cut-off events. [2024-06-28 04:17:53,752 INFO L125 PetriNetUnfolderBase]: For 949848/949852 co-relation queries the response was YES. [2024-06-28 04:17:53,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53040 conditions, 5471 events. 3387/5471 cut-off events. For 949848/949852 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 33665 event pairs, 758 based on Foata normal form. 6/5473 useless extension candidates. Maximal degree in co-relation 52847. Up to 4816 conditions per place. [2024-06-28 04:17:53,999 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 442 selfloop transitions, 139 changer transitions 0/586 dead transitions. [2024-06-28 04:17:53,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 586 transitions, 12361 flow [2024-06-28 04:17:54,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 04:17:54,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 04:17:54,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 207 transitions. [2024-06-28 04:17:54,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3791208791208791 [2024-06-28 04:17:54,001 INFO L175 Difference]: Start difference. First operand has 418 places, 545 transitions, 10557 flow. Second operand 13 states and 207 transitions. [2024-06-28 04:17:54,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 586 transitions, 12361 flow [2024-06-28 04:17:57,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 586 transitions, 11725 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-28 04:17:57,304 INFO L231 Difference]: Finished difference. Result has 419 places, 551 transitions, 10323 flow [2024-06-28 04:17:57,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9929, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10323, PETRI_PLACES=419, PETRI_TRANSITIONS=551} [2024-06-28 04:17:57,305 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 376 predicate places. [2024-06-28 04:17:57,305 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 551 transitions, 10323 flow [2024-06-28 04:17:57,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:17:57,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:17:57,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:17:57,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 04:17:57,305 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:17:57,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:17:57,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1749607068, now seen corresponding path program 3 times [2024-06-28 04:17:57,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:17:57,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572082017] [2024-06-28 04:17:57,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:17:57,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:17:57,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:18:00,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:18:00,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:18:00,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572082017] [2024-06-28 04:18:00,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572082017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:18:00,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:18:00,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:18:00,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362192249] [2024-06-28 04:18:00,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:18:00,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:18:00,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:18:00,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:18:00,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:18:00,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:18:00,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 551 transitions, 10323 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:18:00,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:18:00,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:18:00,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:18:03,284 INFO L124 PetriNetUnfolderBase]: 3381/5465 cut-off events. [2024-06-28 04:18:03,285 INFO L125 PetriNetUnfolderBase]: For 949570/949574 co-relation queries the response was YES. [2024-06-28 04:18:03,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52351 conditions, 5465 events. 3381/5465 cut-off events. For 949570/949574 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 33668 event pairs, 757 based on Foata normal form. 6/5467 useless extension candidates. Maximal degree in co-relation 52157. Up to 4811 conditions per place. [2024-06-28 04:18:03,381 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 441 selfloop transitions, 139 changer transitions 0/585 dead transitions. [2024-06-28 04:18:03,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 585 transitions, 11791 flow [2024-06-28 04:18:03,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 04:18:03,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 04:18:03,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 206 transitions. [2024-06-28 04:18:03,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3772893772893773 [2024-06-28 04:18:03,383 INFO L175 Difference]: Start difference. First operand has 419 places, 551 transitions, 10323 flow. Second operand 13 states and 206 transitions. [2024-06-28 04:18:03,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 585 transitions, 11791 flow [2024-06-28 04:18:06,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 585 transitions, 11533 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-28 04:18:06,448 INFO L231 Difference]: Finished difference. Result has 423 places, 551 transitions, 10349 flow [2024-06-28 04:18:06,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10065, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10349, PETRI_PLACES=423, PETRI_TRANSITIONS=551} [2024-06-28 04:18:06,449 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 380 predicate places. [2024-06-28 04:18:06,449 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 551 transitions, 10349 flow [2024-06-28 04:18:06,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:18:06,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:18:06,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:18:06,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 04:18:06,449 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:18:06,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:18:06,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1749606696, now seen corresponding path program 7 times [2024-06-28 04:18:06,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:18:06,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185829112] [2024-06-28 04:18:06,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:18:06,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:18:06,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:18:10,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:18:10,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:18:10,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185829112] [2024-06-28 04:18:10,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185829112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:18:10,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:18:10,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:18:10,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189852508] [2024-06-28 04:18:10,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:18:10,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:18:10,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:18:10,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:18:10,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:18:10,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:18:10,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 551 transitions, 10349 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:18:10,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:18:10,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:18:10,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:18:12,779 INFO L124 PetriNetUnfolderBase]: 3386/5469 cut-off events. [2024-06-28 04:18:12,779 INFO L125 PetriNetUnfolderBase]: For 960784/960784 co-relation queries the response was YES. [2024-06-28 04:18:12,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52534 conditions, 5469 events. 3386/5469 cut-off events. For 960784/960784 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 33657 event pairs, 674 based on Foata normal form. 1/5465 useless extension candidates. Maximal degree in co-relation 52339. Up to 4664 conditions per place. [2024-06-28 04:18:12,881 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 365 selfloop transitions, 210 changer transitions 0/580 dead transitions. [2024-06-28 04:18:12,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 580 transitions, 12067 flow [2024-06-28 04:18:12,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:18:12,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:18:12,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 04:18:12,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4126984126984127 [2024-06-28 04:18:12,882 INFO L175 Difference]: Start difference. First operand has 423 places, 551 transitions, 10349 flow. Second operand 9 states and 156 transitions. [2024-06-28 04:18:12,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 580 transitions, 12067 flow [2024-06-28 04:18:16,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 580 transitions, 11774 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-06-28 04:18:16,596 INFO L231 Difference]: Finished difference. Result has 420 places, 554 transitions, 10536 flow [2024-06-28 04:18:16,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10056, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10536, PETRI_PLACES=420, PETRI_TRANSITIONS=554} [2024-06-28 04:18:16,596 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 377 predicate places. [2024-06-28 04:18:16,596 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 554 transitions, 10536 flow [2024-06-28 04:18:16,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:18:16,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:18:16,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:18:16,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 04:18:16,596 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:18:16,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:18:16,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1749601116, now seen corresponding path program 8 times [2024-06-28 04:18:16,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:18:16,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027470057] [2024-06-28 04:18:16,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:18:16,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:18:16,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:18:20,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:18:20,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:18:20,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027470057] [2024-06-28 04:18:20,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027470057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:18:20,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:18:20,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:18:20,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028131658] [2024-06-28 04:18:20,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:18:20,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:18:20,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:18:20,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:18:20,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:18:20,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:18:20,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 554 transitions, 10536 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:18:20,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:18:20,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:18:20,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:18:23,463 INFO L124 PetriNetUnfolderBase]: 3383/5469 cut-off events. [2024-06-28 04:18:23,463 INFO L125 PetriNetUnfolderBase]: For 972488/972488 co-relation queries the response was YES. [2024-06-28 04:18:23,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52714 conditions, 5469 events. 3383/5469 cut-off events. For 972488/972488 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 33733 event pairs, 676 based on Foata normal form. 1/5465 useless extension candidates. Maximal degree in co-relation 52518. Up to 4661 conditions per place. [2024-06-28 04:18:23,565 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 364 selfloop transitions, 210 changer transitions 0/579 dead transitions. [2024-06-28 04:18:23,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 579 transitions, 11978 flow [2024-06-28 04:18:23,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:18:23,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:18:23,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 04:18:23,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-06-28 04:18:23,566 INFO L175 Difference]: Start difference. First operand has 420 places, 554 transitions, 10536 flow. Second operand 9 states and 154 transitions. [2024-06-28 04:18:23,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 579 transitions, 11978 flow [2024-06-28 04:18:27,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 579 transitions, 11691 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 04:18:27,726 INFO L231 Difference]: Finished difference. Result has 424 places, 554 transitions, 10675 flow [2024-06-28 04:18:27,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10249, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10675, PETRI_PLACES=424, PETRI_TRANSITIONS=554} [2024-06-28 04:18:27,726 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 381 predicate places. [2024-06-28 04:18:27,726 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 554 transitions, 10675 flow [2024-06-28 04:18:27,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:18:27,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:18:27,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:18:27,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 04:18:27,726 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:18:27,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:18:27,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1349245010, now seen corresponding path program 5 times [2024-06-28 04:18:27,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:18:27,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478997697] [2024-06-28 04:18:27,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:18:27,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:18:27,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:18:31,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:18:31,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:18:31,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478997697] [2024-06-28 04:18:31,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478997697] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:18:31,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:18:31,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:18:31,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348710625] [2024-06-28 04:18:31,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:18:31,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:18:31,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:18:31,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:18:31,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:18:31,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:18:31,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 554 transitions, 10675 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:18:31,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:18:31,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:18:31,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:18:33,416 INFO L124 PetriNetUnfolderBase]: 3441/5564 cut-off events. [2024-06-28 04:18:33,416 INFO L125 PetriNetUnfolderBase]: For 1038963/1038963 co-relation queries the response was YES. [2024-06-28 04:18:33,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54376 conditions, 5564 events. 3441/5564 cut-off events. For 1038963/1038963 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 34390 event pairs, 631 based on Foata normal form. 2/5565 useless extension candidates. Maximal degree in co-relation 54179. Up to 4884 conditions per place. [2024-06-28 04:18:33,510 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 470 selfloop transitions, 123 changer transitions 0/598 dead transitions. [2024-06-28 04:18:33,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 598 transitions, 12887 flow [2024-06-28 04:18:33,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 04:18:33,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 04:18:33,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 195 transitions. [2024-06-28 04:18:33,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3869047619047619 [2024-06-28 04:18:33,511 INFO L175 Difference]: Start difference. First operand has 424 places, 554 transitions, 10675 flow. Second operand 12 states and 195 transitions. [2024-06-28 04:18:33,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 598 transitions, 12887 flow [2024-06-28 04:18:37,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 598 transitions, 12288 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 04:18:37,673 INFO L231 Difference]: Finished difference. Result has 428 places, 566 transitions, 10646 flow [2024-06-28 04:18:37,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10076, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10646, PETRI_PLACES=428, PETRI_TRANSITIONS=566} [2024-06-28 04:18:37,674 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 385 predicate places. [2024-06-28 04:18:37,674 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 566 transitions, 10646 flow [2024-06-28 04:18:37,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:18:37,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:18:37,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:18:37,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 04:18:37,674 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:18:37,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:18:37,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1067575350, now seen corresponding path program 4 times [2024-06-28 04:18:37,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:18:37,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75866509] [2024-06-28 04:18:37,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:18:37,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:18:37,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:18:40,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:18:40,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:18:40,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75866509] [2024-06-28 04:18:40,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75866509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:18:40,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:18:40,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:18:40,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907647487] [2024-06-28 04:18:40,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:18:40,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:18:40,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:18:40,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:18:40,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:18:40,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:18:40,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 566 transitions, 10646 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:18:40,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:18:40,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:18:40,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:18:43,265 INFO L124 PetriNetUnfolderBase]: 3461/5588 cut-off events. [2024-06-28 04:18:43,266 INFO L125 PetriNetUnfolderBase]: For 1061748/1061748 co-relation queries the response was YES. [2024-06-28 04:18:43,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54705 conditions, 5588 events. 3461/5588 cut-off events. For 1061748/1061748 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 34506 event pairs, 629 based on Foata normal form. 4/5591 useless extension candidates. Maximal degree in co-relation 54506. Up to 4978 conditions per place. [2024-06-28 04:18:43,367 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 481 selfloop transitions, 114 changer transitions 0/600 dead transitions. [2024-06-28 04:18:43,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 600 transitions, 12299 flow [2024-06-28 04:18:43,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:18:43,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:18:43,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-28 04:18:43,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38961038961038963 [2024-06-28 04:18:43,368 INFO L175 Difference]: Start difference. First operand has 428 places, 566 transitions, 10646 flow. Second operand 11 states and 180 transitions. [2024-06-28 04:18:43,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 600 transitions, 12299 flow [2024-06-28 04:18:47,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 600 transitions, 12155 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-28 04:18:47,774 INFO L231 Difference]: Finished difference. Result has 433 places, 572 transitions, 10906 flow [2024-06-28 04:18:47,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10502, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10906, PETRI_PLACES=433, PETRI_TRANSITIONS=572} [2024-06-28 04:18:47,774 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 390 predicate places. [2024-06-28 04:18:47,774 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 572 transitions, 10906 flow [2024-06-28 04:18:47,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:18:47,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:18:47,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:18:47,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 04:18:47,775 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:18:47,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:18:47,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1074932394, now seen corresponding path program 6 times [2024-06-28 04:18:47,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:18:47,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371403728] [2024-06-28 04:18:47,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:18:47,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:18:47,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:18:51,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:18:51,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:18:51,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371403728] [2024-06-28 04:18:51,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371403728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:18:51,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:18:51,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:18:51,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727311668] [2024-06-28 04:18:51,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:18:51,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:18:51,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:18:51,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:18:51,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:18:51,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:18:51,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 572 transitions, 10906 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:18:51,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:18:51,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:18:51,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:18:53,777 INFO L124 PetriNetUnfolderBase]: 3455/5588 cut-off events. [2024-06-28 04:18:53,777 INFO L125 PetriNetUnfolderBase]: For 1055369/1055369 co-relation queries the response was YES. [2024-06-28 04:18:53,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54783 conditions, 5588 events. 3455/5588 cut-off events. For 1055369/1055369 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 34573 event pairs, 629 based on Foata normal form. 2/5589 useless extension candidates. Maximal degree in co-relation 54582. Up to 4897 conditions per place. [2024-06-28 04:18:53,869 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 472 selfloop transitions, 125 changer transitions 0/602 dead transitions. [2024-06-28 04:18:53,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 602 transitions, 12632 flow [2024-06-28 04:18:53,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 04:18:53,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 04:18:53,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 193 transitions. [2024-06-28 04:18:53,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38293650793650796 [2024-06-28 04:18:53,870 INFO L175 Difference]: Start difference. First operand has 433 places, 572 transitions, 10906 flow. Second operand 12 states and 193 transitions. [2024-06-28 04:18:53,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 602 transitions, 12632 flow [2024-06-28 04:18:58,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 602 transitions, 12344 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-28 04:18:58,061 INFO L231 Difference]: Finished difference. Result has 436 places, 572 transitions, 10874 flow [2024-06-28 04:18:58,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10618, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10874, PETRI_PLACES=436, PETRI_TRANSITIONS=572} [2024-06-28 04:18:58,062 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 393 predicate places. [2024-06-28 04:18:58,062 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 572 transitions, 10874 flow [2024-06-28 04:18:58,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:18:58,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:18:58,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:18:58,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 04:18:58,062 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:18:58,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:18:58,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1341893174, now seen corresponding path program 5 times [2024-06-28 04:18:58,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:18:58,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843693048] [2024-06-28 04:18:58,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:18:58,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:18:58,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:19:01,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:19:01,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:19:01,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843693048] [2024-06-28 04:19:01,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843693048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:19:01,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:19:01,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:19:01,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537178258] [2024-06-28 04:19:01,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:19:01,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:19:01,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:19:01,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:19:01,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:19:01,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:19:01,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 572 transitions, 10874 flow. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:19:01,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:19:01,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:19:01,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:19:03,433 INFO L124 PetriNetUnfolderBase]: 3437/5558 cut-off events. [2024-06-28 04:19:03,434 INFO L125 PetriNetUnfolderBase]: For 1058199/1058199 co-relation queries the response was YES. [2024-06-28 04:19:03,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53910 conditions, 5558 events. 3437/5558 cut-off events. For 1058199/1058199 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 34370 event pairs, 626 based on Foata normal form. 6/5563 useless extension candidates. Maximal degree in co-relation 53708. Up to 4955 conditions per place. [2024-06-28 04:19:03,529 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 479 selfloop transitions, 114 changer transitions 0/598 dead transitions. [2024-06-28 04:19:03,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 598 transitions, 12128 flow [2024-06-28 04:19:03,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:19:03,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:19:03,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-28 04:19:03,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3852813852813853 [2024-06-28 04:19:03,530 INFO L175 Difference]: Start difference. First operand has 436 places, 572 transitions, 10874 flow. Second operand 11 states and 178 transitions. [2024-06-28 04:19:03,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 598 transitions, 12128 flow [2024-06-28 04:19:07,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 598 transitions, 11851 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-28 04:19:07,843 INFO L231 Difference]: Finished difference. Result has 437 places, 572 transitions, 10841 flow [2024-06-28 04:19:07,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10597, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10841, PETRI_PLACES=437, PETRI_TRANSITIONS=572} [2024-06-28 04:19:07,843 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 394 predicate places. [2024-06-28 04:19:07,843 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 572 transitions, 10841 flow [2024-06-28 04:19:07,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:19:07,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:19:07,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:19:07,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 04:19:07,844 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:19:07,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:19:07,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1349250776, now seen corresponding path program 9 times [2024-06-28 04:19:07,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:19:07,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619762852] [2024-06-28 04:19:07,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:19:07,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:19:07,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:19:11,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:19:11,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:19:11,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619762852] [2024-06-28 04:19:11,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619762852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:19:11,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:19:11,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:19:11,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717874104] [2024-06-28 04:19:11,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:19:11,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:19:11,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:19:11,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:19:11,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:19:11,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:19:11,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 572 transitions, 10841 flow. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:19:11,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:19:11,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:19:11,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:19:13,011 INFO L124 PetriNetUnfolderBase]: 3434/5556 cut-off events. [2024-06-28 04:19:13,011 INFO L125 PetriNetUnfolderBase]: For 1034265/1034265 co-relation queries the response was YES. [2024-06-28 04:19:13,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53847 conditions, 5556 events. 3434/5556 cut-off events. For 1034265/1034265 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 34331 event pairs, 656 based on Foata normal form. 1/5556 useless extension candidates. Maximal degree in co-relation 53644. Up to 5093 conditions per place. [2024-06-28 04:19:13,117 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 515 selfloop transitions, 73 changer transitions 0/593 dead transitions. [2024-06-28 04:19:13,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 593 transitions, 12307 flow [2024-06-28 04:19:13,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:19:13,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:19:13,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-28 04:19:13,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3862433862433862 [2024-06-28 04:19:13,120 INFO L175 Difference]: Start difference. First operand has 437 places, 572 transitions, 10841 flow. Second operand 9 states and 146 transitions. [2024-06-28 04:19:13,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 593 transitions, 12307 flow [2024-06-28 04:19:17,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 593 transitions, 12039 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-28 04:19:17,090 INFO L231 Difference]: Finished difference. Result has 435 places, 572 transitions, 10725 flow [2024-06-28 04:19:17,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10573, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10725, PETRI_PLACES=435, PETRI_TRANSITIONS=572} [2024-06-28 04:19:17,091 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 392 predicate places. [2024-06-28 04:19:17,091 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 572 transitions, 10725 flow [2024-06-28 04:19:17,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:19:17,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:19:17,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:19:17,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 04:19:17,091 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:19:17,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:19:17,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1349256170, now seen corresponding path program 7 times [2024-06-28 04:19:17,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:19:17,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891221388] [2024-06-28 04:19:17,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:19:17,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:19:17,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:19:20,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:19:20,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:19:20,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891221388] [2024-06-28 04:19:20,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891221388] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:19:20,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:19:20,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:19:20,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78231507] [2024-06-28 04:19:20,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:19:20,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:19:20,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:19:20,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:19:20,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:19:20,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:19:20,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 572 transitions, 10725 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:19:20,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:19:20,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:19:20,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:19:23,011 INFO L124 PetriNetUnfolderBase]: 3428/5544 cut-off events. [2024-06-28 04:19:23,011 INFO L125 PetriNetUnfolderBase]: For 1044208/1044208 co-relation queries the response was YES. [2024-06-28 04:19:23,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53497 conditions, 5544 events. 3428/5544 cut-off events. For 1044208/1044208 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 34282 event pairs, 623 based on Foata normal form. 2/5545 useless extension candidates. Maximal degree in co-relation 53293. Up to 4879 conditions per place. [2024-06-28 04:19:23,105 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 470 selfloop transitions, 127 changer transitions 0/602 dead transitions. [2024-06-28 04:19:23,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 602 transitions, 12229 flow [2024-06-28 04:19:23,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 04:19:23,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 04:19:23,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 193 transitions. [2024-06-28 04:19:23,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38293650793650796 [2024-06-28 04:19:23,106 INFO L175 Difference]: Start difference. First operand has 435 places, 572 transitions, 10725 flow. Second operand 12 states and 193 transitions. [2024-06-28 04:19:23,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 602 transitions, 12229 flow [2024-06-28 04:19:27,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 602 transitions, 12025 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-28 04:19:27,147 INFO L231 Difference]: Finished difference. Result has 440 places, 572 transitions, 10781 flow [2024-06-28 04:19:27,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10521, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10781, PETRI_PLACES=440, PETRI_TRANSITIONS=572} [2024-06-28 04:19:27,148 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 397 predicate places. [2024-06-28 04:19:27,148 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 572 transitions, 10781 flow [2024-06-28 04:19:27,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:19:27,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:19:27,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:19:27,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 04:19:27,148 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:19:27,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:19:27,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1349256356, now seen corresponding path program 10 times [2024-06-28 04:19:27,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:19:27,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079203331] [2024-06-28 04:19:27,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:19:27,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:19:27,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:19:31,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:19:31,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:19:31,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079203331] [2024-06-28 04:19:31,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079203331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:19:31,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:19:31,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:19:31,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046015227] [2024-06-28 04:19:31,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:19:31,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:19:31,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:19:31,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:19:31,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:19:31,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:19:31,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 572 transitions, 10781 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:19:31,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:19:31,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:19:31,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:19:33,700 INFO L124 PetriNetUnfolderBase]: 3425/5544 cut-off events. [2024-06-28 04:19:33,700 INFO L125 PetriNetUnfolderBase]: For 1044654/1044654 co-relation queries the response was YES. [2024-06-28 04:19:33,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53583 conditions, 5544 events. 3425/5544 cut-off events. For 1044654/1044654 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 34311 event pairs, 655 based on Foata normal form. 1/5544 useless extension candidates. Maximal degree in co-relation 53378. Up to 5082 conditions per place. [2024-06-28 04:19:33,794 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 515 selfloop transitions, 73 changer transitions 0/593 dead transitions. [2024-06-28 04:19:33,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 593 transitions, 12015 flow [2024-06-28 04:19:33,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:19:33,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:19:33,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-28 04:19:33,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3738095238095238 [2024-06-28 04:19:33,800 INFO L175 Difference]: Start difference. First operand has 440 places, 572 transitions, 10781 flow. Second operand 10 states and 157 transitions. [2024-06-28 04:19:33,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 593 transitions, 12015 flow [2024-06-28 04:19:38,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 593 transitions, 11738 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-28 04:19:38,166 INFO L231 Difference]: Finished difference. Result has 439 places, 572 transitions, 10656 flow [2024-06-28 04:19:38,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10504, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10656, PETRI_PLACES=439, PETRI_TRANSITIONS=572} [2024-06-28 04:19:38,166 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 396 predicate places. [2024-06-28 04:19:38,166 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 572 transitions, 10656 flow [2024-06-28 04:19:38,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:19:38,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:19:38,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:19:38,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 04:19:38,167 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:19:38,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:19:38,167 INFO L85 PathProgramCache]: Analyzing trace with hash 795995246, now seen corresponding path program 5 times [2024-06-28 04:19:38,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:19:38,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246235870] [2024-06-28 04:19:38,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:19:38,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:19:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:19:41,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:19:41,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:19:41,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246235870] [2024-06-28 04:19:41,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246235870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:19:41,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:19:41,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:19:41,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450567686] [2024-06-28 04:19:41,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:19:41,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:19:41,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:19:41,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:19:41,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:19:41,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:19:41,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 572 transitions, 10656 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:19:41,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:19:41,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:19:41,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:19:43,717 INFO L124 PetriNetUnfolderBase]: 3407/5523 cut-off events. [2024-06-28 04:19:43,717 INFO L125 PetriNetUnfolderBase]: For 1055151/1055155 co-relation queries the response was YES. [2024-06-28 04:19:43,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52384 conditions, 5523 events. 3407/5523 cut-off events. For 1055151/1055155 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 34146 event pairs, 528 based on Foata normal form. 12/5534 useless extension candidates. Maximal degree in co-relation 52178. Up to 4535 conditions per place. [2024-06-28 04:19:43,817 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 513 selfloop transitions, 97 changer transitions 0/615 dead transitions. [2024-06-28 04:19:43,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 615 transitions, 12042 flow [2024-06-28 04:19:43,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:19:43,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:19:43,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-28 04:19:43,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 04:19:43,818 INFO L175 Difference]: Start difference. First operand has 439 places, 572 transitions, 10656 flow. Second operand 10 states and 175 transitions. [2024-06-28 04:19:43,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 615 transitions, 12042 flow [2024-06-28 04:19:48,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 615 transitions, 11852 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 04:19:48,101 INFO L231 Difference]: Finished difference. Result has 439 places, 572 transitions, 10673 flow [2024-06-28 04:19:48,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10466, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10673, PETRI_PLACES=439, PETRI_TRANSITIONS=572} [2024-06-28 04:19:48,101 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 396 predicate places. [2024-06-28 04:19:48,102 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 572 transitions, 10673 flow [2024-06-28 04:19:48,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:19:48,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:19:48,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:19:48,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 04:19:48,102 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:19:48,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:19:48,102 INFO L85 PathProgramCache]: Analyzing trace with hash 701931032, now seen corresponding path program 11 times [2024-06-28 04:19:48,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:19:48,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052379114] [2024-06-28 04:19:48,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:19:48,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:19:48,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:19:51,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:19:51,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:19:51,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052379114] [2024-06-28 04:19:51,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052379114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:19:51,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:19:51,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:19:51,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051383242] [2024-06-28 04:19:51,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:19:51,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:19:51,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:19:51,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:19:51,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:19:51,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:19:51,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 572 transitions, 10673 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:19:51,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:19:51,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:19:51,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:19:54,039 INFO L124 PetriNetUnfolderBase]: 3404/5491 cut-off events. [2024-06-28 04:19:54,040 INFO L125 PetriNetUnfolderBase]: For 1017060/1017064 co-relation queries the response was YES. [2024-06-28 04:19:54,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52631 conditions, 5491 events. 3404/5491 cut-off events. For 1017060/1017064 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 33840 event pairs, 739 based on Foata normal form. 1/5475 useless extension candidates. Maximal degree in co-relation 52424. Up to 4694 conditions per place. [2024-06-28 04:19:54,137 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 380 selfloop transitions, 218 changer transitions 0/603 dead transitions. [2024-06-28 04:19:54,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 603 transitions, 12443 flow [2024-06-28 04:19:54,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:19:54,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:19:54,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 04:19:54,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42063492063492064 [2024-06-28 04:19:54,138 INFO L175 Difference]: Start difference. First operand has 439 places, 572 transitions, 10673 flow. Second operand 9 states and 159 transitions. [2024-06-28 04:19:54,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 603 transitions, 12443 flow [2024-06-28 04:19:57,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 603 transitions, 12262 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 04:19:57,742 INFO L231 Difference]: Finished difference. Result has 440 places, 572 transitions, 10946 flow [2024-06-28 04:19:57,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10504, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=218, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10946, PETRI_PLACES=440, PETRI_TRANSITIONS=572} [2024-06-28 04:19:57,743 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 397 predicate places. [2024-06-28 04:19:57,743 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 572 transitions, 10946 flow [2024-06-28 04:19:57,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:19:57,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:19:57,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:19:57,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 04:19:57,743 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:19:57,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:19:57,744 INFO L85 PathProgramCache]: Analyzing trace with hash -656994650, now seen corresponding path program 12 times [2024-06-28 04:19:57,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:19:57,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48345102] [2024-06-28 04:19:57,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:19:57,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:19:57,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:20:01,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:20:01,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:20:01,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48345102] [2024-06-28 04:20:01,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48345102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:20:01,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:20:01,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:20:01,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898794956] [2024-06-28 04:20:01,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:20:01,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:20:01,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:20:01,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:20:01,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:20:01,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:20:01,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 572 transitions, 10946 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:20:01,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:20:01,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:20:01,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:20:04,030 INFO L124 PetriNetUnfolderBase]: 3409/5499 cut-off events. [2024-06-28 04:20:04,031 INFO L125 PetriNetUnfolderBase]: For 988466/988470 co-relation queries the response was YES. [2024-06-28 04:20:04,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52595 conditions, 5499 events. 3409/5499 cut-off events. For 988466/988470 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 33945 event pairs, 749 based on Foata normal form. 1/5481 useless extension candidates. Maximal degree in co-relation 52388. Up to 4700 conditions per place. [2024-06-28 04:20:04,127 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 375 selfloop transitions, 221 changer transitions 0/601 dead transitions. [2024-06-28 04:20:04,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 601 transitions, 12530 flow [2024-06-28 04:20:04,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:20:04,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:20:04,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 04:20:04,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-28 04:20:04,129 INFO L175 Difference]: Start difference. First operand has 440 places, 572 transitions, 10946 flow. Second operand 9 states and 153 transitions. [2024-06-28 04:20:04,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 601 transitions, 12530 flow [2024-06-28 04:20:08,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 601 transitions, 11880 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-28 04:20:08,069 INFO L231 Difference]: Finished difference. Result has 440 places, 575 transitions, 10822 flow [2024-06-28 04:20:08,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10323, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=218, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10822, PETRI_PLACES=440, PETRI_TRANSITIONS=575} [2024-06-28 04:20:08,069 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 397 predicate places. [2024-06-28 04:20:08,069 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 575 transitions, 10822 flow [2024-06-28 04:20:08,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:20:08,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:20:08,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:20:08,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 04:20:08,070 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:20:08,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:20:08,070 INFO L85 PathProgramCache]: Analyzing trace with hash 150652408, now seen corresponding path program 8 times [2024-06-28 04:20:08,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:20:08,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235203426] [2024-06-28 04:20:08,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:20:08,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:20:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:20:11,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:20:11,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:20:11,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235203426] [2024-06-28 04:20:11,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235203426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:20:11,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:20:11,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:20:11,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194519349] [2024-06-28 04:20:11,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:20:11,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:20:11,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:20:11,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:20:11,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:20:11,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:20:11,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 575 transitions, 10822 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:20:11,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:20:11,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:20:11,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:20:13,924 INFO L124 PetriNetUnfolderBase]: 3419/5518 cut-off events. [2024-06-28 04:20:13,924 INFO L125 PetriNetUnfolderBase]: For 1010165/1010169 co-relation queries the response was YES. [2024-06-28 04:20:13,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52714 conditions, 5518 events. 3419/5518 cut-off events. For 1010165/1010169 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 34067 event pairs, 749 based on Foata normal form. 2/5501 useless extension candidates. Maximal degree in co-relation 52507. Up to 4665 conditions per place. [2024-06-28 04:20:14,018 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 372 selfloop transitions, 236 changer transitions 0/613 dead transitions. [2024-06-28 04:20:14,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 613 transitions, 12812 flow [2024-06-28 04:20:14,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:20:14,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:20:14,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-28 04:20:14,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3917748917748918 [2024-06-28 04:20:14,020 INFO L175 Difference]: Start difference. First operand has 440 places, 575 transitions, 10822 flow. Second operand 11 states and 181 transitions. [2024-06-28 04:20:14,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 613 transitions, 12812 flow [2024-06-28 04:20:18,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 613 transitions, 12526 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 04:20:18,157 INFO L231 Difference]: Finished difference. Result has 445 places, 581 transitions, 11228 flow [2024-06-28 04:20:18,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10536, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=233, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11228, PETRI_PLACES=445, PETRI_TRANSITIONS=581} [2024-06-28 04:20:18,158 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 402 predicate places. [2024-06-28 04:20:18,158 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 581 transitions, 11228 flow [2024-06-28 04:20:18,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:20:18,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:20:18,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:20:18,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 04:20:18,158 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:20:18,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:20:18,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1890620816, now seen corresponding path program 13 times [2024-06-28 04:20:18,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:20:18,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361666294] [2024-06-28 04:20:18,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:20:18,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:20:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:20:21,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:20:21,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:20:21,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361666294] [2024-06-28 04:20:21,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361666294] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:20:21,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:20:21,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:20:21,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601688858] [2024-06-28 04:20:21,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:20:21,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:20:21,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:20:21,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:20:21,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:20:21,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:20:21,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 581 transitions, 11228 flow. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:20:21,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:20:21,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:20:21,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:20:23,962 INFO L124 PetriNetUnfolderBase]: 3424/5560 cut-off events. [2024-06-28 04:20:23,962 INFO L125 PetriNetUnfolderBase]: For 1023047/1023065 co-relation queries the response was YES. [2024-06-28 04:20:24,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53144 conditions, 5560 events. 3424/5560 cut-off events. For 1023047/1023065 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 34635 event pairs, 729 based on Foata normal form. 6/5554 useless extension candidates. Maximal degree in co-relation 52935. Up to 4720 conditions per place. [2024-06-28 04:20:24,055 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 397 selfloop transitions, 208 changer transitions 0/610 dead transitions. [2024-06-28 04:20:24,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 610 transitions, 13072 flow [2024-06-28 04:20:24,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:20:24,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:20:24,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-28 04:20:24,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226190476190476 [2024-06-28 04:20:24,056 INFO L175 Difference]: Start difference. First operand has 445 places, 581 transitions, 11228 flow. Second operand 8 states and 142 transitions. [2024-06-28 04:20:24,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 610 transitions, 13072 flow [2024-06-28 04:20:28,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 610 transitions, 12482 flow, removed 65 selfloop flow, removed 8 redundant places. [2024-06-28 04:20:28,198 INFO L231 Difference]: Finished difference. Result has 445 places, 584 transitions, 11136 flow [2024-06-28 04:20:28,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10644, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11136, PETRI_PLACES=445, PETRI_TRANSITIONS=584} [2024-06-28 04:20:28,198 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 402 predicate places. [2024-06-28 04:20:28,198 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 584 transitions, 11136 flow [2024-06-28 04:20:28,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:20:28,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:20:28,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:20:28,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 04:20:28,199 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:20:28,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:20:28,199 INFO L85 PathProgramCache]: Analyzing trace with hash 298307206, now seen corresponding path program 6 times [2024-06-28 04:20:28,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:20:28,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002778496] [2024-06-28 04:20:28,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:20:28,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:20:28,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:20:31,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:20:31,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:20:31,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002778496] [2024-06-28 04:20:31,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002778496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:20:31,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:20:31,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:20:31,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044465347] [2024-06-28 04:20:31,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:20:31,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:20:31,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:20:31,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:20:31,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:20:31,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:20:31,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 584 transitions, 11136 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:20:31,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:20:31,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:20:31,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:20:34,543 INFO L124 PetriNetUnfolderBase]: 3450/5583 cut-off events. [2024-06-28 04:20:34,544 INFO L125 PetriNetUnfolderBase]: For 1056250/1056260 co-relation queries the response was YES. [2024-06-28 04:20:34,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53436 conditions, 5583 events. 3450/5583 cut-off events. For 1056250/1056260 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 34639 event pairs, 785 based on Foata normal form. 10/5585 useless extension candidates. Maximal degree in co-relation 53226. Up to 5038 conditions per place. [2024-06-28 04:20:34,644 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 508 selfloop transitions, 106 changer transitions 0/619 dead transitions. [2024-06-28 04:20:34,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 619 transitions, 12800 flow [2024-06-28 04:20:34,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 04:20:34,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 04:20:34,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 186 transitions. [2024-06-28 04:20:34,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36904761904761907 [2024-06-28 04:20:34,645 INFO L175 Difference]: Start difference. First operand has 445 places, 584 transitions, 11136 flow. Second operand 12 states and 186 transitions. [2024-06-28 04:20:34,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 619 transitions, 12800 flow [2024-06-28 04:20:38,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 619 transitions, 11782 flow, removed 34 selfloop flow, removed 10 redundant places. [2024-06-28 04:20:38,788 INFO L231 Difference]: Finished difference. Result has 447 places, 590 transitions, 10458 flow [2024-06-28 04:20:38,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10118, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10458, PETRI_PLACES=447, PETRI_TRANSITIONS=590} [2024-06-28 04:20:38,788 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 404 predicate places. [2024-06-28 04:20:38,788 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 590 transitions, 10458 flow [2024-06-28 04:20:38,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:20:38,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:20:38,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:20:38,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 04:20:38,788 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:20:38,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:20:38,789 INFO L85 PathProgramCache]: Analyzing trace with hash 159917998, now seen corresponding path program 9 times [2024-06-28 04:20:38,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:20:38,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820911372] [2024-06-28 04:20:38,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:20:38,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:20:38,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:20:42,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:20:42,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:20:42,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820911372] [2024-06-28 04:20:42,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820911372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:20:42,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:20:42,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:20:42,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436624828] [2024-06-28 04:20:42,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:20:42,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:20:42,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:20:42,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:20:42,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:20:42,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:20:42,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 590 transitions, 10458 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:20:42,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:20:42,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:20:42,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:20:44,471 INFO L124 PetriNetUnfolderBase]: 3476/5591 cut-off events. [2024-06-28 04:20:44,472 INFO L125 PetriNetUnfolderBase]: For 1080455/1080459 co-relation queries the response was YES. [2024-06-28 04:20:44,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53379 conditions, 5591 events. 3476/5591 cut-off events. For 1080455/1080459 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 34450 event pairs, 749 based on Foata normal form. 2/5574 useless extension candidates. Maximal degree in co-relation 53171. Up to 4732 conditions per place. [2024-06-28 04:20:44,558 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 379 selfloop transitions, 240 changer transitions 0/624 dead transitions. [2024-06-28 04:20:44,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 624 transitions, 12652 flow [2024-06-28 04:20:44,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:20:44,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:20:44,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-28 04:20:44,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4023809523809524 [2024-06-28 04:20:44,559 INFO L175 Difference]: Start difference. First operand has 447 places, 590 transitions, 10458 flow. Second operand 10 states and 169 transitions. [2024-06-28 04:20:44,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 624 transitions, 12652 flow [2024-06-28 04:20:49,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 624 transitions, 12492 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 04:20:49,150 INFO L231 Difference]: Finished difference. Result has 449 places, 596 transitions, 10932 flow [2024-06-28 04:20:49,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10298, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10932, PETRI_PLACES=449, PETRI_TRANSITIONS=596} [2024-06-28 04:20:49,151 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 406 predicate places. [2024-06-28 04:20:49,151 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 596 transitions, 10932 flow [2024-06-28 04:20:49,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:20:49,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:20:49,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:20:49,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 04:20:49,151 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:20:49,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:20:49,152 INFO L85 PathProgramCache]: Analyzing trace with hash -781391182, now seen corresponding path program 14 times [2024-06-28 04:20:49,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:20:49,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759465164] [2024-06-28 04:20:49,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:20:49,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:20:49,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:20:52,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:20:52,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:20:52,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759465164] [2024-06-28 04:20:52,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759465164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:20:52,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:20:52,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:20:52,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013902426] [2024-06-28 04:20:52,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:20:52,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:20:52,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:20:52,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:20:52,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:20:52,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:20:52,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 596 transitions, 10932 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:20:52,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:20:52,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:20:52,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:20:55,302 INFO L124 PetriNetUnfolderBase]: 3489/5613 cut-off events. [2024-06-28 04:20:55,302 INFO L125 PetriNetUnfolderBase]: For 1100074/1100078 co-relation queries the response was YES. [2024-06-28 04:20:55,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54353 conditions, 5613 events. 3489/5613 cut-off events. For 1100074/1100078 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 34664 event pairs, 749 based on Foata normal form. 1/5595 useless extension candidates. Maximal degree in co-relation 54143. Up to 4807 conditions per place. [2024-06-28 04:20:55,392 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 392 selfloop transitions, 228 changer transitions 0/625 dead transitions. [2024-06-28 04:20:55,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 625 transitions, 12844 flow [2024-06-28 04:20:55,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:20:55,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:20:55,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-28 04:20:55,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4021164021164021 [2024-06-28 04:20:55,394 INFO L175 Difference]: Start difference. First operand has 449 places, 596 transitions, 10932 flow. Second operand 9 states and 152 transitions. [2024-06-28 04:20:55,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 625 transitions, 12844 flow [2024-06-28 04:21:00,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 625 transitions, 12323 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 04:21:00,169 INFO L231 Difference]: Finished difference. Result has 452 places, 602 transitions, 10987 flow [2024-06-28 04:21:00,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10423, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=596, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=222, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10987, PETRI_PLACES=452, PETRI_TRANSITIONS=602} [2024-06-28 04:21:00,170 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 409 predicate places. [2024-06-28 04:21:00,170 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 602 transitions, 10987 flow [2024-06-28 04:21:00,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:21:00,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:21:00,170 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] [2024-06-28 04:21:00,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 04:21:00,170 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:21:00,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:21:00,171 INFO L85 PathProgramCache]: Analyzing trace with hash 159912604, now seen corresponding path program 7 times [2024-06-28 04:21:00,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:21:00,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499447645] [2024-06-28 04:21:00,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:21:00,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:21:00,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:21:03,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:21:03,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:21:03,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499447645] [2024-06-28 04:21:03,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499447645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:21:03,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:21:03,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:21:03,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425719332] [2024-06-28 04:21:03,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:21:03,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:21:03,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:21:03,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:21:03,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:21:03,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:21:03,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 602 transitions, 10987 flow. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:21:03,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:21:03,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:21:03,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:21:06,536 INFO L124 PetriNetUnfolderBase]: 3483/5635 cut-off events. [2024-06-28 04:21:06,536 INFO L125 PetriNetUnfolderBase]: For 1104795/1104805 co-relation queries the response was YES. [2024-06-28 04:21:06,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54061 conditions, 5635 events. 3483/5635 cut-off events. For 1104795/1104805 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 35058 event pairs, 787 based on Foata normal form. 10/5637 useless extension candidates. Maximal degree in co-relation 53850. Up to 5087 conditions per place. [2024-06-28 04:21:06,625 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 519 selfloop transitions, 106 changer transitions 0/630 dead transitions. [2024-06-28 04:21:06,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 630 transitions, 12313 flow [2024-06-28 04:21:06,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 04:21:06,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 04:21:06,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 185 transitions. [2024-06-28 04:21:06,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36706349206349204 [2024-06-28 04:21:06,627 INFO L175 Difference]: Start difference. First operand has 452 places, 602 transitions, 10987 flow. Second operand 12 states and 185 transitions. [2024-06-28 04:21:06,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 630 transitions, 12313 flow [2024-06-28 04:21:11,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 630 transitions, 12004 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-28 04:21:11,460 INFO L231 Difference]: Finished difference. Result has 459 places, 602 transitions, 10896 flow [2024-06-28 04:21:11,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10678, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10896, PETRI_PLACES=459, PETRI_TRANSITIONS=602} [2024-06-28 04:21:11,461 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 416 predicate places. [2024-06-28 04:21:11,461 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 602 transitions, 10896 flow [2024-06-28 04:21:11,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 10 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) [2024-06-28 04:21:11,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:21:11,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:21:11,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 04:21:11,461 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:21:11,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:21:11,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1907554256, now seen corresponding path program 15 times [2024-06-28 04:21:11,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:21:11,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146483881] [2024-06-28 04:21:11,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:21:11,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:21:11,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:21:14,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:21:14,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:21:14,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146483881] [2024-06-28 04:21:14,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146483881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:21:14,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:21:14,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:21:14,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919568022] [2024-06-28 04:21:14,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:21:14,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:21:14,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:21:14,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:21:14,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:21:14,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:21:14,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 602 transitions, 10896 flow. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:14,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:21:14,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:21:14,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:21:16,907 INFO L124 PetriNetUnfolderBase]: 3488/5651 cut-off events. [2024-06-28 04:21:16,907 INFO L125 PetriNetUnfolderBase]: For 1115857/1115875 co-relation queries the response was YES. [2024-06-28 04:21:16,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53971 conditions, 5651 events. 3488/5651 cut-off events. For 1115857/1115875 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 35157 event pairs, 728 based on Foata normal form. 6/5645 useless extension candidates. Maximal degree in co-relation 53758. Up to 4805 conditions per place. [2024-06-28 04:21:17,005 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 408 selfloop transitions, 214 changer transitions 0/627 dead transitions. [2024-06-28 04:21:17,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 627 transitions, 12755 flow [2024-06-28 04:21:17,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:21:17,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:21:17,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 04:21:17,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41369047619047616 [2024-06-28 04:21:17,007 INFO L175 Difference]: Start difference. First operand has 459 places, 602 transitions, 10896 flow. Second operand 8 states and 139 transitions. [2024-06-28 04:21:17,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 627 transitions, 12755 flow [2024-06-28 04:21:21,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 627 transitions, 12543 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-28 04:21:21,395 INFO L231 Difference]: Finished difference. Result has 456 places, 605 transitions, 11169 flow [2024-06-28 04:21:21,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10684, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11169, PETRI_PLACES=456, PETRI_TRANSITIONS=605} [2024-06-28 04:21:21,396 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 413 predicate places. [2024-06-28 04:21:21,396 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 605 transitions, 11169 flow [2024-06-28 04:21:21,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:21,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:21:21,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:21:21,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 04:21:21,396 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:21:21,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:21:21,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1026079874, now seen corresponding path program 8 times [2024-06-28 04:21:21,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:21:21,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080538555] [2024-06-28 04:21:21,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:21:21,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:21:21,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:21:24,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:21:24,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:21:24,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080538555] [2024-06-28 04:21:24,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080538555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:21:24,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:21:24,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:21:24,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670823893] [2024-06-28 04:21:24,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:21:24,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:21:24,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:21:24,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:21:24,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:21:24,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:21:24,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 605 transitions, 11169 flow. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:24,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:21:24,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:21:24,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:21:26,552 INFO L124 PetriNetUnfolderBase]: 3498/5677 cut-off events. [2024-06-28 04:21:26,552 INFO L125 PetriNetUnfolderBase]: For 1141444/1141468 co-relation queries the response was YES. [2024-06-28 04:21:26,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54526 conditions, 5677 events. 3498/5677 cut-off events. For 1141444/1141468 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 35494 event pairs, 789 based on Foata normal form. 20/5691 useless extension candidates. Maximal degree in co-relation 54312. Up to 5114 conditions per place. [2024-06-28 04:21:26,652 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 533 selfloop transitions, 94 changer transitions 0/632 dead transitions. [2024-06-28 04:21:26,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 632 transitions, 12807 flow [2024-06-28 04:21:26,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:21:26,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:21:26,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-28 04:21:26,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3915343915343915 [2024-06-28 04:21:26,654 INFO L175 Difference]: Start difference. First operand has 456 places, 605 transitions, 11169 flow. Second operand 9 states and 148 transitions. [2024-06-28 04:21:26,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 632 transitions, 12807 flow [2024-06-28 04:21:31,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 632 transitions, 12384 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 04:21:31,247 INFO L231 Difference]: Finished difference. Result has 460 places, 608 transitions, 11004 flow [2024-06-28 04:21:31,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10746, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11004, PETRI_PLACES=460, PETRI_TRANSITIONS=608} [2024-06-28 04:21:31,247 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 417 predicate places. [2024-06-28 04:21:31,247 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 608 transitions, 11004 flow [2024-06-28 04:21:31,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:31,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:21:31,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:21:31,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 04:21:31,248 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 04:21:31,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:21:31,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1380758624, now seen corresponding path program 9 times [2024-06-28 04:21:31,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:21:31,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57609810] [2024-06-28 04:21:31,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:21:31,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:21:31,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:21:33,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:21:33,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:21:33,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57609810] [2024-06-28 04:21:33,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57609810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:21:33,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:21:33,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:21:33,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410366394] [2024-06-28 04:21:33,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:21:33,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:21:33,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:21:33,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:21:33,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:21:33,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:21:33,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 608 transitions, 11004 flow. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 9 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:21:33,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:21:33,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:21:33,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:21:36,204 INFO L124 PetriNetUnfolderBase]: 3524/5719 cut-off events. [2024-06-28 04:21:36,204 INFO L125 PetriNetUnfolderBase]: For 1173297/1173321 co-relation queries the response was YES. [2024-06-28 04:21:36,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54918 conditions, 5719 events. 3524/5719 cut-off events. For 1173297/1173321 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 35834 event pairs, 747 based on Foata normal form. 20/5733 useless extension candidates. Maximal degree in co-relation 54703. Up to 4833 conditions per place. [2024-06-28 04:21:36,298 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 462 selfloop transitions, 170 changer transitions 0/637 dead transitions. [2024-06-28 04:21:36,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 637 transitions, 12972 flow [2024-06-28 04:21:36,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:21:36,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:21:36,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-28 04:21:36,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-06-28 04:21:36,300 INFO L175 Difference]: Start difference. First operand has 460 places, 608 transitions, 11004 flow. Second operand 8 states and 138 transitions. [2024-06-28 04:21:36,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 637 transitions, 12972 flow Killed by 15