./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe007_rmo.oepc_rmo.opt-thin001_rmo.oepc_rmo.opt.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/safe007_rmo.oepc_rmo.opt-thin001_rmo.oepc_rmo.opt.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/safe007_rmo.oepc_rmo.opt-thin001_rmo.oepc_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe007_rmo.oepc_rmo.opt-thin001_rmo.oepc_rmo.opt.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 03:56:13,158 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:56:13,227 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:56:13,232 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:56:13,233 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:56:13,259 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:56:13,260 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:56:13,260 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:56:13,261 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:56:13,264 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:56:13,264 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:56:13,264 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:56:13,265 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:56:13,266 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:56:13,267 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:56:13,267 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:56:13,267 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:56:13,268 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:56:13,268 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:56:13,268 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:56:13,269 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:56:13,269 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:56:13,270 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:56:13,270 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:56:13,270 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:56:13,270 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:56:13,270 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:56:13,271 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:56:13,271 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:56:13,271 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:56:13,272 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:56:13,272 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:56:13,273 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:56:13,273 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:56:13,273 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:56:13,273 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:56:13,273 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:56:13,274 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:56:13,274 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:56:13,274 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:56:13,274 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:56:13,275 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:56:13,275 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:56:13,275 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:56:13,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:56:13,532 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:56:13,535 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:56:13,536 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:56:13,536 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:56:13,537 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe007_rmo.oepc_rmo.opt-thin001_rmo.oepc_rmo.opt.i [2024-06-28 03:56:14,775 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:56:15,001 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:56:15,002 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe007_rmo.oepc_rmo.opt-thin001_rmo.oepc_rmo.opt.i [2024-06-28 03:56:15,024 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49bcf5fbf/0041fc8239ad4eb7ac75c8197235ca14/FLAGff49fe740 [2024-06-28 03:56:15,034 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49bcf5fbf/0041fc8239ad4eb7ac75c8197235ca14 [2024-06-28 03:56:15,036 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:56:15,036 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:56:15,037 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe007_rmo.oepc_rmo.opt-thin001_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-28 03:56:15,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:56:15,182 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:56:15,182 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:56:15,182 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:56:15,186 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:56:15,187 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:56:15" (1/2) ... [2024-06-28 03:56:15,187 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a0db9d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:56:15, skipping insertion in model container [2024-06-28 03:56:15,187 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:56:15" (1/2) ... [2024-06-28 03:56:15,188 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@581371d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:56:15, skipping insertion in model container [2024-06-28 03:56:15,189 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:56:15" (2/2) ... [2024-06-28 03:56:15,189 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a0db9d0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:56:15, skipping insertion in model container [2024-06-28 03:56:15,189 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:56:15" (2/2) ... [2024-06-28 03:56:15,189 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:56:15,288 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:56:15,289 INFO L97 edCorrectnessWitness]: Location invariant before [L839-L839] (((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$w_buff0_used == (_Bool)0)) && (! multithreaded || z$w_buff1_used == (_Bool)0)) && (! multithreaded || z$w_buff0 == 0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$w_buff1 == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$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) && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && z$w_buff0 == 0) && z$w_buff0_used == (_Bool)0) && z$w_buff1 == 0) && z$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & z && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1)))) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & z && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$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 || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0) [2024-06-28 03:56:15,289 INFO L97 edCorrectnessWitness]: Location invariant before [L842-L842] (((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$w_buff0_used == (_Bool)0)) && (! multithreaded || z$w_buff1_used == (_Bool)0)) && (! multithreaded || z$w_buff0 == 0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$w_buff1 == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_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$w_buff1_used == (_Bool)0) && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && z$w_buff0 == 0) && z$w_buff0_used == (_Bool)0) && z$w_buff1 == 0) && z$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 == & z && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1)))) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & z && (*__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))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || z$r_buff1_thd0 == (_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$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0) [2024-06-28 03:56:15,289 INFO L97 edCorrectnessWitness]: Location invariant before [L841-L841] (((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$w_buff0_used == (_Bool)0)) && (! multithreaded || z$w_buff1_used == (_Bool)0)) && (! multithreaded || z$w_buff0 == 0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$w_buff1 == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$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) && z$flush_delayed == (_Bool)0) && z$r_buff0_thd0 == (_Bool)0) && z$r_buff0_thd1 == (_Bool)0) && z$r_buff0_thd2 == (_Bool)0) && z$r_buff0_thd3 == (_Bool)0) && z$r_buff1_thd0 == (_Bool)0) && z$r_buff1_thd1 == (_Bool)0) && z$r_buff1_thd2 == (_Bool)0) && z$r_buff1_thd3 == (_Bool)0) && z$read_delayed == (_Bool)0) && z$read_delayed_var == 0) && z$w_buff0 == 0) && z$w_buff0_used == (_Bool)0) && z$w_buff1 == 0) && z$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & z && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1)))) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && (z$mem_tmp == 0 || z$mem_tmp == 1)))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & z && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$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 || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0) [2024-06-28 03:56:15,289 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:56:15,289 INFO L106 edCorrectnessWitness]: ghost_update [L837-L837] multithreaded = 1; [2024-06-28 03:56:15,323 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:56:15,624 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:56:15,632 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:56:15,757 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:56:15,789 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:56:15,790 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:56:15 WrapperNode [2024-06-28 03:56:15,790 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:56:15,791 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:56:15,791 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:56:15,791 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:56:15,796 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 03:56:15" (1/1) ... [2024-06-28 03:56:15,830 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 03:56:15" (1/1) ... [2024-06-28 03:56:15,873 INFO L138 Inliner]: procedures = 175, calls = 80, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 209 [2024-06-28 03:56:15,874 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:56:15,874 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:56:15,875 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:56:15,875 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:56:15,883 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 03:56:15" (1/1) ... [2024-06-28 03:56:15,883 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 03:56:15" (1/1) ... [2024-06-28 03:56:15,886 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 03:56:15" (1/1) ... [2024-06-28 03:56:15,900 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 03:56:15,906 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 03:56:15" (1/1) ... [2024-06-28 03:56:15,906 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 03:56:15" (1/1) ... [2024-06-28 03:56:15,923 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 03:56:15" (1/1) ... [2024-06-28 03:56:15,925 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 03:56:15" (1/1) ... [2024-06-28 03:56:15,927 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 03:56:15" (1/1) ... [2024-06-28 03:56:15,929 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 03:56:15" (1/1) ... [2024-06-28 03:56:15,932 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:56:15,933 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:56:15,933 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:56:15,933 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:56:15,933 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 03:56:15" (1/1) ... [2024-06-28 03:56:15,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:56:15,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:56:15,991 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 03:56:15,997 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 03:56:16,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 03:56:16,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 03:56:16,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 03:56:16,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 03:56:16,024 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:56:16,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:56:16,024 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:56:16,024 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:56:16,024 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:56:16,025 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:56:16,025 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 03:56:16,025 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 03:56:16,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:56:16,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 03:56:16,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:56:16,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:56:16,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:56:16,029 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 03:56:16,189 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:56:16,190 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:56:16,664 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:56:16,665 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:56:16,969 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:56:16,969 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:56:16,970 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:56:16 BoogieIcfgContainer [2024-06-28 03:56:16,970 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:56:16,972 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:56:16,972 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:56:16,975 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:56:16,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:56:15" (1/4) ... [2024-06-28 03:56:16,975 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4af338e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:56:16, skipping insertion in model container [2024-06-28 03:56:16,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:56:15" (2/4) ... [2024-06-28 03:56:16,976 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4af338e1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:56:16, skipping insertion in model container [2024-06-28 03:56:16,976 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 03:56:15" (3/4) ... [2024-06-28 03:56:16,976 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4af338e1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:56:16, skipping insertion in model container [2024-06-28 03:56:16,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:56:16" (4/4) ... [2024-06-28 03:56:16,978 INFO L112 eAbstractionObserver]: Analyzing ICFG safe007_rmo.oepc_rmo.opt-thin001_rmo.oepc_rmo.opt.i [2024-06-28 03:56:16,993 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:56:16,993 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-28 03:56:16,993 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:56:17,078 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:56:17,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 42 transitions, 96 flow [2024-06-28 03:56:17,129 INFO L124 PetriNetUnfolderBase]: 0/39 cut-off events. [2024-06-28 03:56:17,129 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:56:17,131 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 56 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 03:56:17,131 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 42 transitions, 96 flow [2024-06-28 03:56:17,133 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 33 transitions, 75 flow [2024-06-28 03:56:17,139 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:56:17,144 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;@4b823f85, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:56:17,144 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-28 03:56:17,148 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:56:17,148 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 03:56:17,148 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:56:17,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:17,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:56:17,149 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 03:56:17,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:17,171 INFO L85 PathProgramCache]: Analyzing trace with hash 639325454, now seen corresponding path program 1 times [2024-06-28 03:56:17,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:17,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449281343] [2024-06-28 03:56:17,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:17,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:17,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:19,021 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 03:56:19,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:19,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449281343] [2024-06-28 03:56:19,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449281343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:19,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:19,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:56:19,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400096219] [2024-06-28 03:56:19,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:19,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:56:19,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:19,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:56:19,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:56:19,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-28 03:56:19,075 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 03:56:19,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:19,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-28 03:56:19,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:19,381 INFO L124 PetriNetUnfolderBase]: 775/1248 cut-off events. [2024-06-28 03:56:19,381 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-06-28 03:56:19,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2503 conditions, 1248 events. 775/1248 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5987 event pairs, 500 based on Foata normal form. 1/1216 useless extension candidates. Maximal degree in co-relation 2491. Up to 1188 conditions per place. [2024-06-28 03:56:19,390 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 33 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-06-28 03:56:19,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 45 transitions, 179 flow [2024-06-28 03:56:19,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:56:19,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:56:19,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-06-28 03:56:19,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5793650793650794 [2024-06-28 03:56:19,400 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 75 flow. Second operand 3 states and 73 transitions. [2024-06-28 03:56:19,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 45 transitions, 179 flow [2024-06-28 03:56:19,403 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 03:56:19,404 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 102 flow [2024-06-28 03:56:19,406 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 03:56:19,408 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 0 predicate places. [2024-06-28 03:56:19,408 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 102 flow [2024-06-28 03:56:19,409 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 03:56:19,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:19,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:19,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:56:19,409 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 03:56:19,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:19,410 INFO L85 PathProgramCache]: Analyzing trace with hash 211464525, now seen corresponding path program 1 times [2024-06-28 03:56:19,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:19,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320098615] [2024-06-28 03:56:19,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:19,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:19,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:21,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:56:21,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:21,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320098615] [2024-06-28 03:56:21,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320098615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:21,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:21,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:56:21,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680085284] [2024-06-28 03:56:21,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:21,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:56:21,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:21,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:56:21,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:56:21,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 42 [2024-06-28 03:56:21,430 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 03:56:21,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:21,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 42 [2024-06-28 03:56:21,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:21,907 INFO L124 PetriNetUnfolderBase]: 769/1235 cut-off events. [2024-06-28 03:56:21,908 INFO L125 PetriNetUnfolderBase]: For 238/244 co-relation queries the response was YES. [2024-06-28 03:56:21,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2854 conditions, 1235 events. 769/1235 cut-off events. For 238/244 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5826 event pairs, 410 based on Foata normal form. 7/1239 useless extension candidates. Maximal degree in co-relation 2842. Up to 1160 conditions per place. [2024-06-28 03:56:21,914 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 42 selfloop transitions, 7 changer transitions 0/57 dead transitions. [2024-06-28 03:56:21,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 57 transitions, 254 flow [2024-06-28 03:56:21,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:56:21,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:56:21,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-06-28 03:56:21,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-06-28 03:56:21,916 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 102 flow. Second operand 4 states and 96 transitions. [2024-06-28 03:56:21,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 57 transitions, 254 flow [2024-06-28 03:56:21,917 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 03:56:21,918 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 138 flow [2024-06-28 03:56:21,919 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 03:56:21,919 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 3 predicate places. [2024-06-28 03:56:21,919 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 138 flow [2024-06-28 03:56:21,920 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 03:56:21,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:21,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:21,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:56:21,920 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 03:56:21,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:21,921 INFO L85 PathProgramCache]: Analyzing trace with hash -2034533426, now seen corresponding path program 1 times [2024-06-28 03:56:21,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:21,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804677907] [2024-06-28 03:56:21,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:21,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:21,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:24,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:56:24,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:24,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804677907] [2024-06-28 03:56:24,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804677907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:24,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:24,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 03:56:24,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056211616] [2024-06-28 03:56:24,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:24,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 03:56:24,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:24,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 03:56:24,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 03:56:24,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:56:24,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 138 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:24,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:24,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:56:24,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:24,774 INFO L124 PetriNetUnfolderBase]: 968/1529 cut-off events. [2024-06-28 03:56:24,775 INFO L125 PetriNetUnfolderBase]: For 806/814 co-relation queries the response was YES. [2024-06-28 03:56:24,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3937 conditions, 1529 events. 968/1529 cut-off events. For 806/814 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7192 event pairs, 400 based on Foata normal form. 9/1536 useless extension candidates. Maximal degree in co-relation 3923. Up to 1433 conditions per place. [2024-06-28 03:56:24,784 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 58 selfloop transitions, 10 changer transitions 0/75 dead transitions. [2024-06-28 03:56:24,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 75 transitions, 379 flow [2024-06-28 03:56:24,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:56:24,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:56:24,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-06-28 03:56:24,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-06-28 03:56:24,786 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 138 flow. Second operand 5 states and 115 transitions. [2024-06-28 03:56:24,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 75 transitions, 379 flow [2024-06-28 03:56:24,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 75 transitions, 358 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 03:56:24,789 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 208 flow [2024-06-28 03:56:24,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=208, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2024-06-28 03:56:24,790 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 8 predicate places. [2024-06-28 03:56:24,790 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 208 flow [2024-06-28 03:56:24,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:24,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:24,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:24,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:56:24,791 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:56:24,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:24,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1598366481, now seen corresponding path program 1 times [2024-06-28 03:56:24,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:24,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472073191] [2024-06-28 03:56:24,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:24,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:24,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:27,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:56:27,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:27,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472073191] [2024-06-28 03:56:27,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472073191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:27,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:27,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:56:27,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215838538] [2024-06-28 03:56:27,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:27,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:56:27,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:27,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:56:27,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:56:27,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 42 [2024-06-28 03:56:27,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 208 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 03:56:27,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:27,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 42 [2024-06-28 03:56:27,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:28,298 INFO L124 PetriNetUnfolderBase]: 959/1514 cut-off events. [2024-06-28 03:56:28,299 INFO L125 PetriNetUnfolderBase]: For 1379/1399 co-relation queries the response was YES. [2024-06-28 03:56:28,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4330 conditions, 1514 events. 959/1514 cut-off events. For 1379/1399 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7104 event pairs, 275 based on Foata normal form. 18/1530 useless extension candidates. Maximal degree in co-relation 4313. Up to 1380 conditions per place. [2024-06-28 03:56:28,307 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 63 selfloop transitions, 12 changer transitions 0/82 dead transitions. [2024-06-28 03:56:28,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 82 transitions, 442 flow [2024-06-28 03:56:28,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:56:28,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:56:28,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-06-28 03:56:28,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-06-28 03:56:28,309 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 208 flow. Second operand 6 states and 132 transitions. [2024-06-28 03:56:28,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 82 transitions, 442 flow [2024-06-28 03:56:28,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 82 transitions, 438 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-28 03:56:28,312 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 243 flow [2024-06-28 03:56:28,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=243, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2024-06-28 03:56:28,313 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 13 predicate places. [2024-06-28 03:56:28,313 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 243 flow [2024-06-28 03:56:28,314 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 03:56:28,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:28,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:28,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:56:28,314 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 03:56:28,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:28,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1120390510, now seen corresponding path program 1 times [2024-06-28 03:56:28,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:28,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988934952] [2024-06-28 03:56:28,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:28,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:28,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:30,053 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 03:56:30,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:30,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988934952] [2024-06-28 03:56:30,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988934952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:30,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:30,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:56:30,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623442520] [2024-06-28 03:56:30,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:30,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:56:30,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:30,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:56:30,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:56:30,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:56:30,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 243 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 03:56:30,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:30,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:56:30,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:30,837 INFO L124 PetriNetUnfolderBase]: 1104/1722 cut-off events. [2024-06-28 03:56:30,837 INFO L125 PetriNetUnfolderBase]: For 2401/2401 co-relation queries the response was YES. [2024-06-28 03:56:30,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5263 conditions, 1722 events. 1104/1722 cut-off events. For 2401/2401 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8116 event pairs, 439 based on Foata normal form. 2/1721 useless extension candidates. Maximal degree in co-relation 5242. Up to 1645 conditions per place. [2024-06-28 03:56:30,845 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 57 selfloop transitions, 9 changer transitions 0/71 dead transitions. [2024-06-28 03:56:30,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 71 transitions, 450 flow [2024-06-28 03:56:30,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:56:30,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:56:30,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 90 transitions. [2024-06-28 03:56:30,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 03:56:30,846 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 243 flow. Second operand 5 states and 90 transitions. [2024-06-28 03:56:30,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 71 transitions, 450 flow [2024-06-28 03:56:30,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 71 transitions, 417 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 03:56:30,849 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 289 flow [2024-06-28 03:56:30,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=289, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2024-06-28 03:56:30,850 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 15 predicate places. [2024-06-28 03:56:30,850 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 289 flow [2024-06-28 03:56:30,851 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 03:56:30,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:30,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:30,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:56:30,851 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 03:56:30,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:30,852 INFO L85 PathProgramCache]: Analyzing trace with hash -675824677, now seen corresponding path program 1 times [2024-06-28 03:56:30,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:30,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800980089] [2024-06-28 03:56:30,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:30,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:30,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:33,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:56:33,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:33,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800980089] [2024-06-28 03:56:33,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800980089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:33,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:33,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:56:33,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17851996] [2024-06-28 03:56:33,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:33,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:56:33,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:33,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:56:33,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:56:33,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:56:33,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 289 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:33,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:33,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:56:33,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:34,905 INFO L124 PetriNetUnfolderBase]: 1084/1710 cut-off events. [2024-06-28 03:56:34,905 INFO L125 PetriNetUnfolderBase]: For 3507/3543 co-relation queries the response was YES. [2024-06-28 03:56:34,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5724 conditions, 1710 events. 1084/1710 cut-off events. For 3507/3543 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8147 event pairs, 376 based on Foata normal form. 12/1713 useless extension candidates. Maximal degree in co-relation 5700. Up to 1536 conditions per place. [2024-06-28 03:56:34,916 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 64 selfloop transitions, 24 changer transitions 0/96 dead transitions. [2024-06-28 03:56:34,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 96 transitions, 607 flow [2024-06-28 03:56:34,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:56:34,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:56:34,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-06-28 03:56:34,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-28 03:56:34,919 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 289 flow. Second operand 7 states and 140 transitions. [2024-06-28 03:56:34,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 96 transitions, 607 flow [2024-06-28 03:56:34,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 96 transitions, 603 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-28 03:56:34,922 INFO L231 Difference]: Finished difference. Result has 64 places, 62 transitions, 387 flow [2024-06-28 03:56:34,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=387, PETRI_PLACES=64, PETRI_TRANSITIONS=62} [2024-06-28 03:56:34,923 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 21 predicate places. [2024-06-28 03:56:34,923 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 62 transitions, 387 flow [2024-06-28 03:56:34,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:34,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:34,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:34,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:56:34,924 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 03:56:34,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:34,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1411247169, now seen corresponding path program 2 times [2024-06-28 03:56:34,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:34,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373403722] [2024-06-28 03:56:34,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:34,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:37,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:56:37,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:37,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373403722] [2024-06-28 03:56:37,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373403722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:37,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:37,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:56:37,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105629108] [2024-06-28 03:56:37,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:37,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:56:37,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:37,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:56:37,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:56:37,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:56:37,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 62 transitions, 387 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:37,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:37,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:56:37,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:38,857 INFO L124 PetriNetUnfolderBase]: 1084/1717 cut-off events. [2024-06-28 03:56:38,857 INFO L125 PetriNetUnfolderBase]: For 5083/5141 co-relation queries the response was YES. [2024-06-28 03:56:38,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6257 conditions, 1717 events. 1084/1717 cut-off events. For 5083/5141 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8261 event pairs, 375 based on Foata normal form. 24/1731 useless extension candidates. Maximal degree in co-relation 6230. Up to 1569 conditions per place. [2024-06-28 03:56:38,869 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 66 selfloop transitions, 22 changer transitions 0/96 dead transitions. [2024-06-28 03:56:38,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 96 transitions, 679 flow [2024-06-28 03:56:38,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:56:38,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:56:38,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-06-28 03:56:38,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-28 03:56:38,871 INFO L175 Difference]: Start difference. First operand has 64 places, 62 transitions, 387 flow. Second operand 7 states and 133 transitions. [2024-06-28 03:56:38,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 96 transitions, 679 flow [2024-06-28 03:56:38,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 96 transitions, 642 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 03:56:38,877 INFO L231 Difference]: Finished difference. Result has 68 places, 68 transitions, 456 flow [2024-06-28 03:56:38,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=456, PETRI_PLACES=68, PETRI_TRANSITIONS=68} [2024-06-28 03:56:38,878 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 25 predicate places. [2024-06-28 03:56:38,879 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 68 transitions, 456 flow [2024-06-28 03:56:38,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:38,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:38,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:38,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:56:38,879 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 03:56:38,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:38,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1411246983, now seen corresponding path program 1 times [2024-06-28 03:56:38,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:38,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897964586] [2024-06-28 03:56:38,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:38,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:38,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:41,619 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 03:56:41,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:41,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897964586] [2024-06-28 03:56:41,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897964586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:41,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:41,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:56:41,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749340804] [2024-06-28 03:56:41,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:41,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:56:41,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:41,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:56:41,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:56:41,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:56:41,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 68 transitions, 456 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 03:56:41,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:41,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:56:41,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:42,726 INFO L124 PetriNetUnfolderBase]: 1171/1837 cut-off events. [2024-06-28 03:56:42,727 INFO L125 PetriNetUnfolderBase]: For 5989/5989 co-relation queries the response was YES. [2024-06-28 03:56:42,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6798 conditions, 1837 events. 1171/1837 cut-off events. For 5989/5989 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 8786 event pairs, 404 based on Foata normal form. 2/1834 useless extension candidates. Maximal degree in co-relation 6769. Up to 1671 conditions per place. [2024-06-28 03:56:42,738 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 87 selfloop transitions, 20 changer transitions 0/112 dead transitions. [2024-06-28 03:56:42,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 112 transitions, 854 flow [2024-06-28 03:56:42,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:56:42,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:56:42,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 131 transitions. [2024-06-28 03:56:42,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.445578231292517 [2024-06-28 03:56:42,742 INFO L175 Difference]: Start difference. First operand has 68 places, 68 transitions, 456 flow. Second operand 7 states and 131 transitions. [2024-06-28 03:56:42,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 112 transitions, 854 flow [2024-06-28 03:56:42,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 112 transitions, 787 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 03:56:42,747 INFO L231 Difference]: Finished difference. Result has 73 places, 80 transitions, 540 flow [2024-06-28 03:56:42,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=540, PETRI_PLACES=73, PETRI_TRANSITIONS=80} [2024-06-28 03:56:42,748 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 30 predicate places. [2024-06-28 03:56:42,748 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 80 transitions, 540 flow [2024-06-28 03:56:42,748 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 03:56:42,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:42,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:42,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:56:42,749 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 03:56:42,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:42,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1729197655, now seen corresponding path program 2 times [2024-06-28 03:56:42,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:42,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461816739] [2024-06-28 03:56:42,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:42,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:42,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:45,244 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 03:56:45,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:45,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461816739] [2024-06-28 03:56:45,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461816739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:45,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:45,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:56:45,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141834827] [2024-06-28 03:56:45,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:45,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:56:45,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:45,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:56:45,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:56:45,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:56:45,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 80 transitions, 540 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 03:56:45,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:45,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:56:45,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:46,128 INFO L124 PetriNetUnfolderBase]: 1184/1856 cut-off events. [2024-06-28 03:56:46,129 INFO L125 PetriNetUnfolderBase]: For 7479/7479 co-relation queries the response was YES. [2024-06-28 03:56:46,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7333 conditions, 1856 events. 1184/1856 cut-off events. For 7479/7479 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 8856 event pairs, 404 based on Foata normal form. 2/1853 useless extension candidates. Maximal degree in co-relation 7301. Up to 1685 conditions per place. [2024-06-28 03:56:46,139 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 82 selfloop transitions, 23 changer transitions 0/110 dead transitions. [2024-06-28 03:56:46,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 110 transitions, 873 flow [2024-06-28 03:56:46,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:56:46,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:56:46,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-06-28 03:56:46,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45634920634920634 [2024-06-28 03:56:46,141 INFO L175 Difference]: Start difference. First operand has 73 places, 80 transitions, 540 flow. Second operand 6 states and 115 transitions. [2024-06-28 03:56:46,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 110 transitions, 873 flow [2024-06-28 03:56:46,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 110 transitions, 843 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 03:56:46,149 INFO L231 Difference]: Finished difference. Result has 77 places, 84 transitions, 608 flow [2024-06-28 03:56:46,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=608, PETRI_PLACES=77, PETRI_TRANSITIONS=84} [2024-06-28 03:56:46,149 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 34 predicate places. [2024-06-28 03:56:46,150 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 84 transitions, 608 flow [2024-06-28 03:56:46,150 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 03:56:46,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:46,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:46,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:56:46,150 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 03:56:46,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:46,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1729197469, now seen corresponding path program 3 times [2024-06-28 03:56:46,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:46,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687015202] [2024-06-28 03:56:46,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:46,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:46,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:48,709 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 03:56:48,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:48,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687015202] [2024-06-28 03:56:48,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687015202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:48,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:48,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:56:48,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069788980] [2024-06-28 03:56:48,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:48,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:56:48,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:48,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:56:48,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:56:48,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:56:48,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 84 transitions, 608 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:48,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:48,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:56:48,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:49,753 INFO L124 PetriNetUnfolderBase]: 1104/1761 cut-off events. [2024-06-28 03:56:49,753 INFO L125 PetriNetUnfolderBase]: For 8914/9013 co-relation queries the response was YES. [2024-06-28 03:56:49,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7230 conditions, 1761 events. 1104/1761 cut-off events. For 8914/9013 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8595 event pairs, 346 based on Foata normal form. 16/1743 useless extension candidates. Maximal degree in co-relation 7196. Up to 1545 conditions per place. [2024-06-28 03:56:49,764 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 67 selfloop transitions, 32 changer transitions 0/111 dead transitions. [2024-06-28 03:56:49,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 111 transitions, 872 flow [2024-06-28 03:56:49,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:56:49,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:56:49,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-06-28 03:56:49,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4801587301587302 [2024-06-28 03:56:49,766 INFO L175 Difference]: Start difference. First operand has 77 places, 84 transitions, 608 flow. Second operand 6 states and 121 transitions. [2024-06-28 03:56:49,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 111 transitions, 872 flow [2024-06-28 03:56:49,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 111 transitions, 824 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 03:56:49,775 INFO L231 Difference]: Finished difference. Result has 79 places, 84 transitions, 643 flow [2024-06-28 03:56:49,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=643, PETRI_PLACES=79, PETRI_TRANSITIONS=84} [2024-06-28 03:56:49,776 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 36 predicate places. [2024-06-28 03:56:49,776 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 84 transitions, 643 flow [2024-06-28 03:56:49,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:56:49,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:49,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:49,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:56:49,776 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 03:56:49,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:49,777 INFO L85 PathProgramCache]: Analyzing trace with hash -298370971, now seen corresponding path program 3 times [2024-06-28 03:56:49,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:49,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237146409] [2024-06-28 03:56:49,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:49,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:51,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:56:51,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:51,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237146409] [2024-06-28 03:56:51,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237146409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:51,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:51,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:56:51,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030326425] [2024-06-28 03:56:51,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:51,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:56:51,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:51,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:56:51,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:56:52,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:56:52,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 84 transitions, 643 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 03:56:52,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:52,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:56:52,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:52,866 INFO L124 PetriNetUnfolderBase]: 1171/1844 cut-off events. [2024-06-28 03:56:52,867 INFO L125 PetriNetUnfolderBase]: For 9375/9401 co-relation queries the response was YES. [2024-06-28 03:56:52,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7521 conditions, 1844 events. 1171/1844 cut-off events. For 9375/9401 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8856 event pairs, 417 based on Foata normal form. 22/1860 useless extension candidates. Maximal degree in co-relation 7487. Up to 1669 conditions per place. [2024-06-28 03:56:52,891 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 77 selfloop transitions, 23 changer transitions 0/105 dead transitions. [2024-06-28 03:56:52,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 105 transitions, 901 flow [2024-06-28 03:56:52,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:56:52,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:56:52,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-06-28 03:56:52,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 03:56:52,893 INFO L175 Difference]: Start difference. First operand has 79 places, 84 transitions, 643 flow. Second operand 6 states and 108 transitions. [2024-06-28 03:56:52,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 105 transitions, 901 flow [2024-06-28 03:56:52,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 105 transitions, 831 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 03:56:52,902 INFO L231 Difference]: Finished difference. Result has 80 places, 85 transitions, 634 flow [2024-06-28 03:56:52,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=634, PETRI_PLACES=80, PETRI_TRANSITIONS=85} [2024-06-28 03:56:52,903 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 37 predicate places. [2024-06-28 03:56:52,903 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 85 transitions, 634 flow [2024-06-28 03:56:52,903 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 03:56:52,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:52,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:52,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:56:52,904 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 03:56:52,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:52,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1729443733, now seen corresponding path program 1 times [2024-06-28 03:56:52,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:52,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530023408] [2024-06-28 03:56:52,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:52,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:52,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:54,768 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 03:56:54,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:54,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530023408] [2024-06-28 03:56:54,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530023408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:54,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:54,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:56:54,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711524206] [2024-06-28 03:56:54,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:54,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:56:54,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:54,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:56:54,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:56:54,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:56:54,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 85 transitions, 634 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 03:56:54,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:54,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:56:54,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:56:55,593 INFO L124 PetriNetUnfolderBase]: 1163/1826 cut-off events. [2024-06-28 03:56:55,594 INFO L125 PetriNetUnfolderBase]: For 8606/8609 co-relation queries the response was YES. [2024-06-28 03:56:55,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7420 conditions, 1826 events. 1163/1826 cut-off events. For 8606/8609 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 8682 event pairs, 379 based on Foata normal form. 6/1829 useless extension candidates. Maximal degree in co-relation 7385. Up to 1709 conditions per place. [2024-06-28 03:56:55,618 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 92 selfloop transitions, 11 changer transitions 0/108 dead transitions. [2024-06-28 03:56:55,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 108 transitions, 903 flow [2024-06-28 03:56:55,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:56:55,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:56:55,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-28 03:56:55,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42063492063492064 [2024-06-28 03:56:55,621 INFO L175 Difference]: Start difference. First operand has 80 places, 85 transitions, 634 flow. Second operand 6 states and 106 transitions. [2024-06-28 03:56:55,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 108 transitions, 903 flow [2024-06-28 03:56:55,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 108 transitions, 869 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 03:56:55,629 INFO L231 Difference]: Finished difference. Result has 83 places, 87 transitions, 643 flow [2024-06-28 03:56:55,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=643, PETRI_PLACES=83, PETRI_TRANSITIONS=87} [2024-06-28 03:56:55,631 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 40 predicate places. [2024-06-28 03:56:55,631 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 87 transitions, 643 flow [2024-06-28 03:56:55,631 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 03:56:55,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:56:55,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:56:55,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:56:55,632 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 03:56:55,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:56:55,632 INFO L85 PathProgramCache]: Analyzing trace with hash 524273140, now seen corresponding path program 1 times [2024-06-28 03:56:55,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:56:55,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102341991] [2024-06-28 03:56:55,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:56:55,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:56:55,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:56:59,683 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 03:56:59,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:56:59,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102341991] [2024-06-28 03:56:59,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102341991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:56:59,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:56:59,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:56:59,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382644667] [2024-06-28 03:56:59,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:56:59,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:56:59,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:56:59,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:56:59,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:56:59,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:56:59,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 87 transitions, 643 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 03:56:59,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:56:59,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:56:59,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:01,149 INFO L124 PetriNetUnfolderBase]: 1176/1849 cut-off events. [2024-06-28 03:57:01,149 INFO L125 PetriNetUnfolderBase]: For 10234/10234 co-relation queries the response was YES. [2024-06-28 03:57:01,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7723 conditions, 1849 events. 1176/1849 cut-off events. For 10234/10234 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 8767 event pairs, 375 based on Foata normal form. 2/1846 useless extension candidates. Maximal degree in co-relation 7686. Up to 1576 conditions per place. [2024-06-28 03:57:01,160 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 102 selfloop transitions, 35 changer transitions 0/142 dead transitions. [2024-06-28 03:57:01,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 142 transitions, 1157 flow [2024-06-28 03:57:01,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:57:01,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:57:01,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-28 03:57:01,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45535714285714285 [2024-06-28 03:57:01,163 INFO L175 Difference]: Start difference. First operand has 83 places, 87 transitions, 643 flow. Second operand 8 states and 153 transitions. [2024-06-28 03:57:01,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 142 transitions, 1157 flow [2024-06-28 03:57:01,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 142 transitions, 1132 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 03:57:01,175 INFO L231 Difference]: Finished difference. Result has 89 places, 100 transitions, 818 flow [2024-06-28 03:57:01,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=618, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=818, PETRI_PLACES=89, PETRI_TRANSITIONS=100} [2024-06-28 03:57:01,176 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 46 predicate places. [2024-06-28 03:57:01,176 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 100 transitions, 818 flow [2024-06-28 03:57:01,176 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 03:57:01,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:01,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:01,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:57:01,177 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 03:57:01,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:01,177 INFO L85 PathProgramCache]: Analyzing trace with hash -798987632, now seen corresponding path program 2 times [2024-06-28 03:57:01,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:01,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735173688] [2024-06-28 03:57:01,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:01,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:04,070 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 03:57:04,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:04,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735173688] [2024-06-28 03:57:04,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735173688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:04,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:04,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:57:04,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003333335] [2024-06-28 03:57:04,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:04,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:57:04,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:04,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:57:04,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:57:04,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:57:04,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 100 transitions, 818 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 03:57:04,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:04,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:57:04,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:05,117 INFO L124 PetriNetUnfolderBase]: 1207/1906 cut-off events. [2024-06-28 03:57:05,117 INFO L125 PetriNetUnfolderBase]: For 12693/12693 co-relation queries the response was YES. [2024-06-28 03:57:05,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8545 conditions, 1906 events. 1207/1906 cut-off events. For 12693/12693 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 9174 event pairs, 375 based on Foata normal form. 2/1903 useless extension candidates. Maximal degree in co-relation 8505. Up to 1686 conditions per place. [2024-06-28 03:57:05,129 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 107 selfloop transitions, 31 changer transitions 0/143 dead transitions. [2024-06-28 03:57:05,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 143 transitions, 1288 flow [2024-06-28 03:57:05,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:57:05,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:57:05,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-28 03:57:05,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44345238095238093 [2024-06-28 03:57:05,131 INFO L175 Difference]: Start difference. First operand has 89 places, 100 transitions, 818 flow. Second operand 8 states and 149 transitions. [2024-06-28 03:57:05,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 143 transitions, 1288 flow [2024-06-28 03:57:05,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 143 transitions, 1234 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-28 03:57:05,149 INFO L231 Difference]: Finished difference. Result has 95 places, 107 transitions, 910 flow [2024-06-28 03:57:05,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=910, PETRI_PLACES=95, PETRI_TRANSITIONS=107} [2024-06-28 03:57:05,150 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 52 predicate places. [2024-06-28 03:57:05,150 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 107 transitions, 910 flow [2024-06-28 03:57:05,150 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 03:57:05,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:05,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:05,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:57:05,150 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 03:57:05,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:05,151 INFO L85 PathProgramCache]: Analyzing trace with hash -798982052, now seen corresponding path program 3 times [2024-06-28 03:57:05,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:05,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615425640] [2024-06-28 03:57:05,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:05,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:05,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:07,618 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 03:57:07,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:07,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615425640] [2024-06-28 03:57:07,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615425640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:07,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:07,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:57:07,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856487622] [2024-06-28 03:57:07,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:07,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:57:07,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:07,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:57:07,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:57:07,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:57:07,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 107 transitions, 910 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 03:57:07,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:07,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:57:07,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:08,722 INFO L124 PetriNetUnfolderBase]: 1202/1899 cut-off events. [2024-06-28 03:57:08,722 INFO L125 PetriNetUnfolderBase]: For 14270/14270 co-relation queries the response was YES. [2024-06-28 03:57:08,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8767 conditions, 1899 events. 1202/1899 cut-off events. For 14270/14270 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 9139 event pairs, 375 based on Foata normal form. 2/1896 useless extension candidates. Maximal degree in co-relation 8724. Up to 1681 conditions per place. [2024-06-28 03:57:08,735 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 114 selfloop transitions, 33 changer transitions 0/152 dead transitions. [2024-06-28 03:57:08,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 152 transitions, 1323 flow [2024-06-28 03:57:08,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:57:08,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:57:08,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-28 03:57:08,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42142857142857143 [2024-06-28 03:57:08,737 INFO L175 Difference]: Start difference. First operand has 95 places, 107 transitions, 910 flow. Second operand 10 states and 177 transitions. [2024-06-28 03:57:08,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 152 transitions, 1323 flow [2024-06-28 03:57:08,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 152 transitions, 1279 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-28 03:57:08,755 INFO L231 Difference]: Finished difference. Result has 101 places, 108 transitions, 950 flow [2024-06-28 03:57:08,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=868, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=950, PETRI_PLACES=101, PETRI_TRANSITIONS=108} [2024-06-28 03:57:08,757 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 58 predicate places. [2024-06-28 03:57:08,757 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 108 transitions, 950 flow [2024-06-28 03:57:08,757 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 03:57:08,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:08,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:08,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:57:08,758 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 03:57:08,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:08,758 INFO L85 PathProgramCache]: Analyzing trace with hash 2065521214, now seen corresponding path program 4 times [2024-06-28 03:57:08,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:08,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596383021] [2024-06-28 03:57:08,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:08,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:08,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:11,207 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 03:57:11,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:11,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596383021] [2024-06-28 03:57:11,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596383021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:11,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:11,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:57:11,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806986188] [2024-06-28 03:57:11,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:11,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:57:11,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:11,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:57:11,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:57:11,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:57:11,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 108 transitions, 950 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 03:57:11,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:11,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:57:11,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:12,796 INFO L124 PetriNetUnfolderBase]: 1233/1956 cut-off events. [2024-06-28 03:57:12,796 INFO L125 PetriNetUnfolderBase]: For 16368/16368 co-relation queries the response was YES. [2024-06-28 03:57:12,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9298 conditions, 1956 events. 1233/1956 cut-off events. For 16368/16368 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 9505 event pairs, 375 based on Foata normal form. 2/1953 useless extension candidates. Maximal degree in co-relation 9253. Up to 1659 conditions per place. [2024-06-28 03:57:12,810 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 111 selfloop transitions, 46 changer transitions 0/162 dead transitions. [2024-06-28 03:57:12,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 162 transitions, 1548 flow [2024-06-28 03:57:12,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:57:12,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:57:12,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-28 03:57:12,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-28 03:57:12,813 INFO L175 Difference]: Start difference. First operand has 101 places, 108 transitions, 950 flow. Second operand 9 states and 171 transitions. [2024-06-28 03:57:12,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 162 transitions, 1548 flow [2024-06-28 03:57:12,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 162 transitions, 1480 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-28 03:57:12,826 INFO L231 Difference]: Finished difference. Result has 103 places, 115 transitions, 1067 flow [2024-06-28 03:57:12,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1067, PETRI_PLACES=103, PETRI_TRANSITIONS=115} [2024-06-28 03:57:12,827 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 60 predicate places. [2024-06-28 03:57:12,827 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 115 transitions, 1067 flow [2024-06-28 03:57:12,827 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 03:57:12,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:12,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:12,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:57:12,829 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 03:57:12,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:12,829 INFO L85 PathProgramCache]: Analyzing trace with hash 2065515634, now seen corresponding path program 5 times [2024-06-28 03:57:12,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:12,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914522208] [2024-06-28 03:57:12,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:12,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:12,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:15,754 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 03:57:15,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:15,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914522208] [2024-06-28 03:57:15,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914522208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:15,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:15,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:57:15,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080045393] [2024-06-28 03:57:15,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:15,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:57:15,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:15,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:57:15,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:57:15,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:57:15,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 115 transitions, 1067 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 03:57:15,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:15,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:57:15,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:17,056 INFO L124 PetriNetUnfolderBase]: 1228/1949 cut-off events. [2024-06-28 03:57:17,057 INFO L125 PetriNetUnfolderBase]: For 18464/18464 co-relation queries the response was YES. [2024-06-28 03:57:17,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9549 conditions, 1949 events. 1228/1949 cut-off events. For 18464/18464 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 9485 event pairs, 375 based on Foata normal form. 2/1946 useless extension candidates. Maximal degree in co-relation 9502. Up to 1654 conditions per place. [2024-06-28 03:57:17,089 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 101 selfloop transitions, 44 changer transitions 0/150 dead transitions. [2024-06-28 03:57:17,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 150 transitions, 1500 flow [2024-06-28 03:57:17,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:57:17,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:57:17,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-28 03:57:17,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46598639455782315 [2024-06-28 03:57:17,094 INFO L175 Difference]: Start difference. First operand has 103 places, 115 transitions, 1067 flow. Second operand 7 states and 137 transitions. [2024-06-28 03:57:17,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 150 transitions, 1500 flow [2024-06-28 03:57:17,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 150 transitions, 1384 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 03:57:17,141 INFO L231 Difference]: Finished difference. Result has 103 places, 115 transitions, 1055 flow [2024-06-28 03:57:17,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=955, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1055, PETRI_PLACES=103, PETRI_TRANSITIONS=115} [2024-06-28 03:57:17,142 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 60 predicate places. [2024-06-28 03:57:17,142 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 115 transitions, 1055 flow [2024-06-28 03:57:17,142 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 03:57:17,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:17,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:17,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:57:17,142 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 03:57:17,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:17,143 INFO L85 PathProgramCache]: Analyzing trace with hash 2072872864, now seen corresponding path program 6 times [2024-06-28 03:57:17,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:17,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121993343] [2024-06-28 03:57:17,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:17,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:19,972 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 03:57:19,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:19,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121993343] [2024-06-28 03:57:19,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121993343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:19,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:19,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:57:19,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049777654] [2024-06-28 03:57:19,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:19,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:57:19,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:19,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:57:19,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:57:20,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:57:20,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 115 transitions, 1055 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 03:57:20,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:20,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:57:20,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:21,201 INFO L124 PetriNetUnfolderBase]: 1223/1948 cut-off events. [2024-06-28 03:57:21,201 INFO L125 PetriNetUnfolderBase]: For 18967/18995 co-relation queries the response was YES. [2024-06-28 03:57:21,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9455 conditions, 1948 events. 1223/1948 cut-off events. For 18967/18995 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 9512 event pairs, 389 based on Foata normal form. 24/1966 useless extension candidates. Maximal degree in co-relation 9408. Up to 1649 conditions per place. [2024-06-28 03:57:21,233 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 104 selfloop transitions, 46 changer transitions 0/155 dead transitions. [2024-06-28 03:57:21,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 155 transitions, 1464 flow [2024-06-28 03:57:21,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:57:21,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:57:21,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-28 03:57:21,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-06-28 03:57:21,240 INFO L175 Difference]: Start difference. First operand has 103 places, 115 transitions, 1055 flow. Second operand 9 states and 161 transitions. [2024-06-28 03:57:21,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 155 transitions, 1464 flow [2024-06-28 03:57:21,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 155 transitions, 1360 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 03:57:21,261 INFO L231 Difference]: Finished difference. Result has 105 places, 116 transitions, 1063 flow [2024-06-28 03:57:21,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=955, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1063, PETRI_PLACES=105, PETRI_TRANSITIONS=116} [2024-06-28 03:57:21,261 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 62 predicate places. [2024-06-28 03:57:21,261 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 116 transitions, 1063 flow [2024-06-28 03:57:21,261 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 03:57:21,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:21,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:21,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:57:21,262 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 03:57:21,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:21,262 INFO L85 PathProgramCache]: Analyzing trace with hash -361703206, now seen corresponding path program 1 times [2024-06-28 03:57:21,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:21,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117171032] [2024-06-28 03:57:21,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:21,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:21,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:23,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:23,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:23,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117171032] [2024-06-28 03:57:23,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117171032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:23,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:23,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:57:23,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680037918] [2024-06-28 03:57:23,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:23,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:57:23,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:23,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:57:23,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:57:23,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:57:23,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 116 transitions, 1063 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 03:57:23,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:23,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:57:23,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:24,634 INFO L124 PetriNetUnfolderBase]: 1445/2322 cut-off events. [2024-06-28 03:57:24,634 INFO L125 PetriNetUnfolderBase]: For 23495/23525 co-relation queries the response was YES. [2024-06-28 03:57:24,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11739 conditions, 2322 events. 1445/2322 cut-off events. For 23495/23525 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 11992 event pairs, 339 based on Foata normal form. 16/2276 useless extension candidates. Maximal degree in co-relation 11692. Up to 1779 conditions per place. [2024-06-28 03:57:24,646 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 110 selfloop transitions, 92 changer transitions 0/225 dead transitions. [2024-06-28 03:57:24,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 225 transitions, 2291 flow [2024-06-28 03:57:24,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:57:24,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:57:24,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 180 transitions. [2024-06-28 03:57:24,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-28 03:57:24,648 INFO L175 Difference]: Start difference. First operand has 105 places, 116 transitions, 1063 flow. Second operand 9 states and 180 transitions. [2024-06-28 03:57:24,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 225 transitions, 2291 flow [2024-06-28 03:57:24,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 225 transitions, 2155 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 03:57:24,670 INFO L231 Difference]: Finished difference. Result has 110 places, 173 transitions, 1802 flow [2024-06-28 03:57:24,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=961, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1802, PETRI_PLACES=110, PETRI_TRANSITIONS=173} [2024-06-28 03:57:24,671 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 67 predicate places. [2024-06-28 03:57:24,671 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 173 transitions, 1802 flow [2024-06-28 03:57:24,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 03:57:24,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:24,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:24,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:57:24,672 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 03:57:24,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:24,672 INFO L85 PathProgramCache]: Analyzing trace with hash 883035772, now seen corresponding path program 2 times [2024-06-28 03:57:24,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:24,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217282400] [2024-06-28 03:57:24,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:24,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:24,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:27,919 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 03:57:27,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:27,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217282400] [2024-06-28 03:57:27,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217282400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:27,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:27,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:57:27,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153424909] [2024-06-28 03:57:27,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:27,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:57:27,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:27,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:57:27,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:57:28,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:57:28,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 173 transitions, 1802 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 03:57:28,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:28,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:57:28,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:29,025 INFO L124 PetriNetUnfolderBase]: 1673/2676 cut-off events. [2024-06-28 03:57:29,026 INFO L125 PetriNetUnfolderBase]: For 31302/31384 co-relation queries the response was YES. [2024-06-28 03:57:29,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14483 conditions, 2676 events. 1673/2676 cut-off events. For 31302/31384 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 14297 event pairs, 352 based on Foata normal form. 33/2607 useless extension candidates. Maximal degree in co-relation 14432. Up to 1964 conditions per place. [2024-06-28 03:57:29,042 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 106 selfloop transitions, 130 changer transitions 0/259 dead transitions. [2024-06-28 03:57:29,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 259 transitions, 3037 flow [2024-06-28 03:57:29,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:57:29,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:57:29,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-28 03:57:29,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497354497354497 [2024-06-28 03:57:29,044 INFO L175 Difference]: Start difference. First operand has 110 places, 173 transitions, 1802 flow. Second operand 9 states and 170 transitions. [2024-06-28 03:57:29,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 259 transitions, 3037 flow [2024-06-28 03:57:29,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 259 transitions, 2985 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-06-28 03:57:29,076 INFO L231 Difference]: Finished difference. Result has 121 places, 218 transitions, 2711 flow [2024-06-28 03:57:29,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=1771, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2711, PETRI_PLACES=121, PETRI_TRANSITIONS=218} [2024-06-28 03:57:29,076 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 78 predicate places. [2024-06-28 03:57:29,076 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 218 transitions, 2711 flow [2024-06-28 03:57:29,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 03:57:29,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:29,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:29,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:57:29,077 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 03:57:29,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:29,077 INFO L85 PathProgramCache]: Analyzing trace with hash -927405126, now seen corresponding path program 3 times [2024-06-28 03:57:29,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:29,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253742674] [2024-06-28 03:57:29,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:29,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:29,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:32,259 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 03:57:32,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:32,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253742674] [2024-06-28 03:57:32,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253742674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:32,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:32,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:57:32,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140932550] [2024-06-28 03:57:32,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:32,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:57:32,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:32,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:57:32,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:57:32,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:57:32,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 218 transitions, 2711 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 03:57:32,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:32,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:57:32,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:33,518 INFO L124 PetriNetUnfolderBase]: 1719/2776 cut-off events. [2024-06-28 03:57:33,518 INFO L125 PetriNetUnfolderBase]: For 38895/39024 co-relation queries the response was YES. [2024-06-28 03:57:33,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15960 conditions, 2776 events. 1719/2776 cut-off events. For 38895/39024 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 15028 event pairs, 338 based on Foata normal form. 47/2737 useless extension candidates. Maximal degree in co-relation 15903. Up to 2152 conditions per place. [2024-06-28 03:57:33,537 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 109 selfloop transitions, 132 changer transitions 0/264 dead transitions. [2024-06-28 03:57:33,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 264 transitions, 3423 flow [2024-06-28 03:57:33,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:57:33,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:57:33,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-28 03:57:33,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46130952380952384 [2024-06-28 03:57:33,539 INFO L175 Difference]: Start difference. First operand has 121 places, 218 transitions, 2711 flow. Second operand 8 states and 155 transitions. [2024-06-28 03:57:33,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 264 transitions, 3423 flow [2024-06-28 03:57:33,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 264 transitions, 3397 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-06-28 03:57:33,580 INFO L231 Difference]: Finished difference. Result has 128 places, 226 transitions, 3099 flow [2024-06-28 03:57:33,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2689, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3099, PETRI_PLACES=128, PETRI_TRANSITIONS=226} [2024-06-28 03:57:33,580 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 85 predicate places. [2024-06-28 03:57:33,580 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 226 transitions, 3099 flow [2024-06-28 03:57:33,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 03:57:33,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:33,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:33,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:57:33,581 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 03:57:33,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:33,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1001183902, now seen corresponding path program 4 times [2024-06-28 03:57:33,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:33,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246607286] [2024-06-28 03:57:33,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:33,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:33,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:37,290 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 03:57:37,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:37,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246607286] [2024-06-28 03:57:37,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246607286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:37,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:37,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:57:37,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650006489] [2024-06-28 03:57:37,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:37,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:57:37,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:37,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:57:37,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:57:37,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:57:37,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 226 transitions, 3099 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 03:57:37,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:37,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:57:37,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:38,458 INFO L124 PetriNetUnfolderBase]: 1763/2856 cut-off events. [2024-06-28 03:57:38,459 INFO L125 PetriNetUnfolderBase]: For 44571/44686 co-relation queries the response was YES. [2024-06-28 03:57:38,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17161 conditions, 2856 events. 1763/2856 cut-off events. For 44571/44686 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 15660 event pairs, 368 based on Foata normal form. 42/2811 useless extension candidates. Maximal degree in co-relation 17101. Up to 2386 conditions per place. [2024-06-28 03:57:38,477 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 169 selfloop transitions, 74 changer transitions 0/266 dead transitions. [2024-06-28 03:57:38,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 266 transitions, 3763 flow [2024-06-28 03:57:38,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:57:38,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:57:38,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 150 transitions. [2024-06-28 03:57:38,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-28 03:57:38,480 INFO L175 Difference]: Start difference. First operand has 128 places, 226 transitions, 3099 flow. Second operand 8 states and 150 transitions. [2024-06-28 03:57:38,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 266 transitions, 3763 flow [2024-06-28 03:57:38,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 266 transitions, 3465 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 03:57:38,525 INFO L231 Difference]: Finished difference. Result has 130 places, 230 transitions, 3037 flow [2024-06-28 03:57:38,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2801, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3037, PETRI_PLACES=130, PETRI_TRANSITIONS=230} [2024-06-28 03:57:38,526 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 87 predicate places. [2024-06-28 03:57:38,526 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 230 transitions, 3037 flow [2024-06-28 03:57:38,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 03:57:38,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:38,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:38,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:57:38,527 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 03:57:38,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:38,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1001368600, now seen corresponding path program 1 times [2024-06-28 03:57:38,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:38,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936423999] [2024-06-28 03:57:38,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:38,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:38,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:41,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:42,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:42,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936423999] [2024-06-28 03:57:42,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936423999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:42,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:42,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:57:42,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257670815] [2024-06-28 03:57:42,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:42,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:57:42,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:42,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:57:42,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:57:42,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:57:42,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 230 transitions, 3037 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 03:57:42,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:42,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:57:42,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:43,366 INFO L124 PetriNetUnfolderBase]: 1946/3090 cut-off events. [2024-06-28 03:57:43,366 INFO L125 PetriNetUnfolderBase]: For 41147/41157 co-relation queries the response was YES. [2024-06-28 03:57:43,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17871 conditions, 3090 events. 1946/3090 cut-off events. For 41147/41157 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 16700 event pairs, 457 based on Foata normal form. 14/3099 useless extension candidates. Maximal degree in co-relation 17810. Up to 2779 conditions per place. [2024-06-28 03:57:43,390 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 228 selfloop transitions, 35 changer transitions 0/268 dead transitions. [2024-06-28 03:57:43,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 268 transitions, 3692 flow [2024-06-28 03:57:43,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:57:43,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:57:43,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 03:57:43,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43154761904761907 [2024-06-28 03:57:43,392 INFO L175 Difference]: Start difference. First operand has 130 places, 230 transitions, 3037 flow. Second operand 8 states and 145 transitions. [2024-06-28 03:57:43,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 268 transitions, 3692 flow [2024-06-28 03:57:43,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 268 transitions, 3510 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-28 03:57:43,524 INFO L231 Difference]: Finished difference. Result has 132 places, 232 transitions, 2950 flow [2024-06-28 03:57:43,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2855, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2950, PETRI_PLACES=132, PETRI_TRANSITIONS=232} [2024-06-28 03:57:43,525 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 89 predicate places. [2024-06-28 03:57:43,525 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 232 transitions, 2950 flow [2024-06-28 03:57:43,525 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 03:57:43,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:43,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:43,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:57:43,526 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 03:57:43,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:43,526 INFO L85 PathProgramCache]: Analyzing trace with hash -393528068, now seen corresponding path program 5 times [2024-06-28 03:57:43,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:43,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027349530] [2024-06-28 03:57:43,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:43,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:43,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:46,342 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 03:57:46,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:46,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027349530] [2024-06-28 03:57:46,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027349530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:46,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:46,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:57:46,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166033552] [2024-06-28 03:57:46,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:46,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:57:46,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:46,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:57:46,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:57:46,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:57:46,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 232 transitions, 2950 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 03:57:46,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:46,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:57:46,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:47,705 INFO L124 PetriNetUnfolderBase]: 1751/2830 cut-off events. [2024-06-28 03:57:47,705 INFO L125 PetriNetUnfolderBase]: For 45070/45193 co-relation queries the response was YES. [2024-06-28 03:57:47,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16717 conditions, 2830 events. 1751/2830 cut-off events. For 45070/45193 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 15482 event pairs, 218 based on Foata normal form. 70/2815 useless extension candidates. Maximal degree in co-relation 16655. Up to 2111 conditions per place. [2024-06-28 03:57:47,725 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 124 selfloop transitions, 117 changer transitions 0/265 dead transitions. [2024-06-28 03:57:47,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 265 transitions, 3536 flow [2024-06-28 03:57:47,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:57:47,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:57:47,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2024-06-28 03:57:47,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47278911564625853 [2024-06-28 03:57:47,727 INFO L175 Difference]: Start difference. First operand has 132 places, 232 transitions, 2950 flow. Second operand 7 states and 139 transitions. [2024-06-28 03:57:47,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 265 transitions, 3536 flow [2024-06-28 03:57:47,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 265 transitions, 3447 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 03:57:47,775 INFO L231 Difference]: Finished difference. Result has 134 places, 232 transitions, 3142 flow [2024-06-28 03:57:47,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2861, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3142, PETRI_PLACES=134, PETRI_TRANSITIONS=232} [2024-06-28 03:57:47,775 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 91 predicate places. [2024-06-28 03:57:47,776 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 232 transitions, 3142 flow [2024-06-28 03:57:47,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 03:57:47,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:47,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:47,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 03:57:47,777 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 03:57:47,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:47,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1022103318, now seen corresponding path program 2 times [2024-06-28 03:57:47,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:47,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312238302] [2024-06-28 03:57:47,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:47,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:47,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:50,567 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 03:57:50,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:50,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312238302] [2024-06-28 03:57:50,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312238302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:50,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:50,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:57:50,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721602776] [2024-06-28 03:57:50,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:50,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:57:50,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:50,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:57:50,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:57:50,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:57:50,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 232 transitions, 3142 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 03:57:50,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:50,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:57:50,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:51,731 INFO L124 PetriNetUnfolderBase]: 1943/3091 cut-off events. [2024-06-28 03:57:51,732 INFO L125 PetriNetUnfolderBase]: For 46900/46912 co-relation queries the response was YES. [2024-06-28 03:57:51,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18246 conditions, 3091 events. 1943/3091 cut-off events. For 46900/46912 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 16774 event pairs, 459 based on Foata normal form. 16/3102 useless extension candidates. Maximal degree in co-relation 18183. Up to 2756 conditions per place. [2024-06-28 03:57:51,751 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 221 selfloop transitions, 38 changer transitions 0/264 dead transitions. [2024-06-28 03:57:51,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 264 transitions, 3773 flow [2024-06-28 03:57:51,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:57:51,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:57:51,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-28 03:57:51,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4387755102040816 [2024-06-28 03:57:51,753 INFO L175 Difference]: Start difference. First operand has 134 places, 232 transitions, 3142 flow. Second operand 7 states and 129 transitions. [2024-06-28 03:57:51,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 264 transitions, 3773 flow [2024-06-28 03:57:51,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 264 transitions, 3570 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 03:57:51,802 INFO L231 Difference]: Finished difference. Result has 136 places, 234 transitions, 3047 flow [2024-06-28 03:57:51,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2939, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3047, PETRI_PLACES=136, PETRI_TRANSITIONS=234} [2024-06-28 03:57:51,803 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 93 predicate places. [2024-06-28 03:57:51,803 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 234 transitions, 3047 flow [2024-06-28 03:57:51,803 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 03:57:51,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:51,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:51,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 03:57:51,803 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 03:57:51,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:51,804 INFO L85 PathProgramCache]: Analyzing trace with hash -165442220, now seen corresponding path program 3 times [2024-06-28 03:57:51,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:51,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850643894] [2024-06-28 03:57:51,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:51,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:51,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:54,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:57:54,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:54,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850643894] [2024-06-28 03:57:54,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850643894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:54,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:54,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:57:54,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397781675] [2024-06-28 03:57:54,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:54,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:57:54,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:54,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:57:54,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:57:54,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:57:54,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 234 transitions, 3047 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 03:57:54,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:54,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:57:54,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:56,048 INFO L124 PetriNetUnfolderBase]: 1963/3127 cut-off events. [2024-06-28 03:57:56,048 INFO L125 PetriNetUnfolderBase]: For 47017/47060 co-relation queries the response was YES. [2024-06-28 03:57:56,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18344 conditions, 3127 events. 1963/3127 cut-off events. For 47017/47060 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 17026 event pairs, 477 based on Foata normal form. 38/3154 useless extension candidates. Maximal degree in co-relation 18280. Up to 2810 conditions per place. [2024-06-28 03:57:56,073 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 224 selfloop transitions, 34 changer transitions 0/263 dead transitions. [2024-06-28 03:57:56,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 263 transitions, 3672 flow [2024-06-28 03:57:56,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:57:56,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:57:56,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-28 03:57:56,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4217687074829932 [2024-06-28 03:57:56,082 INFO L175 Difference]: Start difference. First operand has 136 places, 234 transitions, 3047 flow. Second operand 7 states and 124 transitions. [2024-06-28 03:57:56,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 263 transitions, 3672 flow [2024-06-28 03:57:56,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 263 transitions, 3580 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 03:57:56,138 INFO L231 Difference]: Finished difference. Result has 138 places, 236 transitions, 3056 flow [2024-06-28 03:57:56,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2959, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3056, PETRI_PLACES=138, PETRI_TRANSITIONS=236} [2024-06-28 03:57:56,139 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 95 predicate places. [2024-06-28 03:57:56,139 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 236 transitions, 3056 flow [2024-06-28 03:57:56,139 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 03:57:56,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:56,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:56,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 03:57:56,140 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:57:56,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:56,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1028598438, now seen corresponding path program 4 times [2024-06-28 03:57:56,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:56,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040199868] [2024-06-28 03:57:56,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:56,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:56,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:57:58,692 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 03:57:58,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:57:58,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040199868] [2024-06-28 03:57:58,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040199868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:57:58,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:57:58,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:57:58,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399371038] [2024-06-28 03:57:58,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:57:58,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:57:58,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:57:58,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:57:58,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:57:58,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:57:58,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 236 transitions, 3056 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 03:57:58,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:57:58,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:57:58,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:57:59,755 INFO L124 PetriNetUnfolderBase]: 1955/3115 cut-off events. [2024-06-28 03:57:59,755 INFO L125 PetriNetUnfolderBase]: For 46056/46099 co-relation queries the response was YES. [2024-06-28 03:57:59,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18165 conditions, 3115 events. 1955/3115 cut-off events. For 46056/46099 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 16967 event pairs, 439 based on Foata normal form. 38/3142 useless extension candidates. Maximal degree in co-relation 18100. Up to 2704 conditions per place. [2024-06-28 03:57:59,778 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 220 selfloop transitions, 41 changer transitions 0/266 dead transitions. [2024-06-28 03:57:59,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 266 transitions, 3689 flow [2024-06-28 03:57:59,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:57:59,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:57:59,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-28 03:57:59,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42517006802721086 [2024-06-28 03:57:59,782 INFO L175 Difference]: Start difference. First operand has 138 places, 236 transitions, 3056 flow. Second operand 7 states and 125 transitions. [2024-06-28 03:57:59,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 266 transitions, 3689 flow [2024-06-28 03:57:59,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 266 transitions, 3629 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 03:57:59,833 INFO L231 Difference]: Finished difference. Result has 141 places, 238 transitions, 3111 flow [2024-06-28 03:57:59,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=2996, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3111, PETRI_PLACES=141, PETRI_TRANSITIONS=238} [2024-06-28 03:57:59,834 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 98 predicate places. [2024-06-28 03:57:59,834 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 238 transitions, 3111 flow [2024-06-28 03:57:59,834 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 03:57:59,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:57:59,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:57:59,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 03:57:59,834 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 03:57:59,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:57:59,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1976231638, now seen corresponding path program 6 times [2024-06-28 03:57:59,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:57:59,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709847113] [2024-06-28 03:57:59,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:57:59,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:57:59,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:01,691 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 03:58:01,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:01,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709847113] [2024-06-28 03:58:01,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709847113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:01,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:01,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:58:01,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066626486] [2024-06-28 03:58:01,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:01,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:58:01,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:01,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:58:01,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:58:01,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:58:01,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 238 transitions, 3111 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 03:58:01,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:01,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:58:01,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:02,749 INFO L124 PetriNetUnfolderBase]: 1999/3245 cut-off events. [2024-06-28 03:58:02,749 INFO L125 PetriNetUnfolderBase]: For 54530/54715 co-relation queries the response was YES. [2024-06-28 03:58:02,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19454 conditions, 3245 events. 1999/3245 cut-off events. For 54530/54715 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 18505 event pairs, 353 based on Foata normal form. 59/3189 useless extension candidates. Maximal degree in co-relation 19387. Up to 2427 conditions per place. [2024-06-28 03:58:02,770 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 133 selfloop transitions, 162 changer transitions 0/322 dead transitions. [2024-06-28 03:58:02,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 322 transitions, 4306 flow [2024-06-28 03:58:02,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:58:02,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:58:02,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-06-28 03:58:02,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4708994708994709 [2024-06-28 03:58:02,772 INFO L175 Difference]: Start difference. First operand has 141 places, 238 transitions, 3111 flow. Second operand 9 states and 178 transitions. [2024-06-28 03:58:02,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 322 transitions, 4306 flow [2024-06-28 03:58:02,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 322 transitions, 4209 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 03:58:02,826 INFO L231 Difference]: Finished difference. Result has 147 places, 276 transitions, 3967 flow [2024-06-28 03:58:02,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3014, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3967, PETRI_PLACES=147, PETRI_TRANSITIONS=276} [2024-06-28 03:58:02,831 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 104 predicate places. [2024-06-28 03:58:02,831 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 276 transitions, 3967 flow [2024-06-28 03:58:02,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 03:58:02,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:02,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:02,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 03:58:02,836 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 03:58:02,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:02,836 INFO L85 PathProgramCache]: Analyzing trace with hash 2061607352, now seen corresponding path program 7 times [2024-06-28 03:58:02,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:02,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544810134] [2024-06-28 03:58:02,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:02,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:02,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:04,493 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 03:58:04,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:04,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544810134] [2024-06-28 03:58:04,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544810134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:04,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:04,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:58:04,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194306910] [2024-06-28 03:58:04,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:04,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:58:04,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:04,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:58:04,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:58:04,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:58:04,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 276 transitions, 3967 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 03:58:04,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:04,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:58:04,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:05,809 INFO L124 PetriNetUnfolderBase]: 2199/3603 cut-off events. [2024-06-28 03:58:05,809 INFO L125 PetriNetUnfolderBase]: For 64092/64508 co-relation queries the response was YES. [2024-06-28 03:58:05,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22333 conditions, 3603 events. 2199/3603 cut-off events. For 64092/64508 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 21274 event pairs, 263 based on Foata normal form. 108/3574 useless extension candidates. Maximal degree in co-relation 22263. Up to 2185 conditions per place. [2024-06-28 03:58:05,839 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 108 selfloop transitions, 217 changer transitions 0/352 dead transitions. [2024-06-28 03:58:05,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 352 transitions, 5160 flow [2024-06-28 03:58:05,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:58:05,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:58:05,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-28 03:58:05,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4656084656084656 [2024-06-28 03:58:05,840 INFO L175 Difference]: Start difference. First operand has 147 places, 276 transitions, 3967 flow. Second operand 9 states and 176 transitions. [2024-06-28 03:58:05,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 352 transitions, 5160 flow [2024-06-28 03:58:05,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 352 transitions, 4926 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-28 03:58:05,969 INFO L231 Difference]: Finished difference. Result has 154 places, 309 transitions, 4729 flow [2024-06-28 03:58:05,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=3780, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4729, PETRI_PLACES=154, PETRI_TRANSITIONS=309} [2024-06-28 03:58:05,972 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 111 predicate places. [2024-06-28 03:58:05,972 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 309 transitions, 4729 flow [2024-06-28 03:58:05,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 03:58:05,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:05,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:58:05,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 03:58:05,972 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:05,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:05,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1354689440, now seen corresponding path program 1 times [2024-06-28 03:58:05,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:05,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130599807] [2024-06-28 03:58:05,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:05,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:07,641 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 03:58:07,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:07,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130599807] [2024-06-28 03:58:07,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130599807] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:07,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:07,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:58:07,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508799868] [2024-06-28 03:58:07,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:07,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:58:07,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:07,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:58:07,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:58:07,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:58:07,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 309 transitions, 4729 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 03:58:07,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:07,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:58:07,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:08,575 INFO L124 PetriNetUnfolderBase]: 2270/3635 cut-off events. [2024-06-28 03:58:08,576 INFO L125 PetriNetUnfolderBase]: For 72921/73383 co-relation queries the response was YES. [2024-06-28 03:58:08,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23619 conditions, 3635 events. 2270/3635 cut-off events. For 72921/73383 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 20886 event pairs, 643 based on Foata normal form. 346/3926 useless extension candidates. Maximal degree in co-relation 23546. Up to 3372 conditions per place. [2024-06-28 03:58:08,607 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 287 selfloop transitions, 14 changer transitions 0/322 dead transitions. [2024-06-28 03:58:08,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 322 transitions, 5389 flow [2024-06-28 03:58:08,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:58:08,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:58:08,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 90 transitions. [2024-06-28 03:58:08,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 03:58:08,608 INFO L175 Difference]: Start difference. First operand has 154 places, 309 transitions, 4729 flow. Second operand 5 states and 90 transitions. [2024-06-28 03:58:08,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 322 transitions, 5389 flow [2024-06-28 03:58:08,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 322 transitions, 5051 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 03:58:08,707 INFO L231 Difference]: Finished difference. Result has 153 places, 312 transitions, 4460 flow [2024-06-28 03:58:08,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4391, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4460, PETRI_PLACES=153, PETRI_TRANSITIONS=312} [2024-06-28 03:58:08,707 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 110 predicate places. [2024-06-28 03:58:08,708 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 312 transitions, 4460 flow [2024-06-28 03:58:08,708 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 03:58:08,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:08,708 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 03:58:08,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 03:58:08,708 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 03:58:08,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:08,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1604306803, now seen corresponding path program 1 times [2024-06-28 03:58:08,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:08,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557201480] [2024-06-28 03:58:08,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:08,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:08,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:12,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:58:12,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:12,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557201480] [2024-06-28 03:58:12,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557201480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:12,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:12,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:58:12,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147674409] [2024-06-28 03:58:12,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:12,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:58:12,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:12,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:58:12,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:58:12,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:58:12,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 312 transitions, 4460 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 03:58:12,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:12,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:58:12,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:13,630 INFO L124 PetriNetUnfolderBase]: 2674/4281 cut-off events. [2024-06-28 03:58:13,630 INFO L125 PetriNetUnfolderBase]: For 76067/76079 co-relation queries the response was YES. [2024-06-28 03:58:13,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26346 conditions, 4281 events. 2674/4281 cut-off events. For 76067/76079 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 25222 event pairs, 298 based on Foata normal form. 24/4300 useless extension candidates. Maximal degree in co-relation 26273. Up to 2345 conditions per place. [2024-06-28 03:58:13,660 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 307 selfloop transitions, 97 changer transitions 0/409 dead transitions. [2024-06-28 03:58:13,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 409 transitions, 6164 flow [2024-06-28 03:58:13,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:58:13,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:58:13,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-28 03:58:13,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603174603174603 [2024-06-28 03:58:13,662 INFO L175 Difference]: Start difference. First operand has 153 places, 312 transitions, 4460 flow. Second operand 9 states and 174 transitions. [2024-06-28 03:58:13,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 409 transitions, 6164 flow [2024-06-28 03:58:13,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 409 transitions, 6119 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-28 03:58:13,758 INFO L231 Difference]: Finished difference. Result has 161 places, 338 transitions, 5087 flow [2024-06-28 03:58:13,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4415, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5087, PETRI_PLACES=161, PETRI_TRANSITIONS=338} [2024-06-28 03:58:13,759 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 118 predicate places. [2024-06-28 03:58:13,759 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 338 transitions, 5087 flow [2024-06-28 03:58:13,759 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 03:58:13,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:13,759 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 03:58:13,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 03:58:13,760 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 03:58:13,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:13,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1228525723, now seen corresponding path program 2 times [2024-06-28 03:58:13,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:13,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068776555] [2024-06-28 03:58:13,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:13,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:13,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:16,898 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 03:58:16,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:16,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068776555] [2024-06-28 03:58:16,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068776555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:16,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:16,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:58:16,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792522907] [2024-06-28 03:58:16,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:16,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:58:16,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:16,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:58:16,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:58:16,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:58:16,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 338 transitions, 5087 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 03:58:16,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:16,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:58:16,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:18,834 INFO L124 PetriNetUnfolderBase]: 2742/4414 cut-off events. [2024-06-28 03:58:18,835 INFO L125 PetriNetUnfolderBase]: For 87455/87467 co-relation queries the response was YES. [2024-06-28 03:58:18,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28205 conditions, 4414 events. 2742/4414 cut-off events. For 87455/87467 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 26350 event pairs, 666 based on Foata normal form. 28/4437 useless extension candidates. Maximal degree in co-relation 28129. Up to 3679 conditions per place. [2024-06-28 03:58:18,868 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 301 selfloop transitions, 79 changer transitions 0/385 dead transitions. [2024-06-28 03:58:18,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 385 transitions, 6037 flow [2024-06-28 03:58:18,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:58:18,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:58:18,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-28 03:58:18,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4470899470899471 [2024-06-28 03:58:18,870 INFO L175 Difference]: Start difference. First operand has 161 places, 338 transitions, 5087 flow. Second operand 9 states and 169 transitions. [2024-06-28 03:58:18,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 385 transitions, 6037 flow [2024-06-28 03:58:19,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 385 transitions, 5929 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 03:58:19,006 INFO L231 Difference]: Finished difference. Result has 166 places, 339 transitions, 5163 flow [2024-06-28 03:58:19,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=4979, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5163, PETRI_PLACES=166, PETRI_TRANSITIONS=339} [2024-06-28 03:58:19,007 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 123 predicate places. [2024-06-28 03:58:19,007 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 339 transitions, 5163 flow [2024-06-28 03:58:19,007 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 03:58:19,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:19,007 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 03:58:19,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 03:58:19,008 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 03:58:19,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:19,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1606180753, now seen corresponding path program 3 times [2024-06-28 03:58:19,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:19,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699220801] [2024-06-28 03:58:19,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:19,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:19,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:22,279 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 03:58:22,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:22,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699220801] [2024-06-28 03:58:22,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699220801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:22,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:22,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:58:22,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381600487] [2024-06-28 03:58:22,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:22,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:58:22,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:22,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:58:22,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:58:22,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:58:22,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 339 transitions, 5163 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 03:58:22,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:22,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:58:22,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:23,844 INFO L124 PetriNetUnfolderBase]: 2790/4498 cut-off events. [2024-06-28 03:58:23,844 INFO L125 PetriNetUnfolderBase]: For 90340/90352 co-relation queries the response was YES. [2024-06-28 03:58:23,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28846 conditions, 4498 events. 2790/4498 cut-off events. For 90340/90352 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 27037 event pairs, 633 based on Foata normal form. 24/4517 useless extension candidates. Maximal degree in co-relation 28768. Up to 3469 conditions per place. [2024-06-28 03:58:23,889 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 311 selfloop transitions, 84 changer transitions 0/400 dead transitions. [2024-06-28 03:58:23,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 400 transitions, 6296 flow [2024-06-28 03:58:23,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:58:23,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:58:23,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-28 03:58:23,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.455026455026455 [2024-06-28 03:58:23,891 INFO L175 Difference]: Start difference. First operand has 166 places, 339 transitions, 5163 flow. Second operand 9 states and 172 transitions. [2024-06-28 03:58:23,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 400 transitions, 6296 flow [2024-06-28 03:58:24,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 400 transitions, 6133 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-28 03:58:24,041 INFO L231 Difference]: Finished difference. Result has 169 places, 350 transitions, 5373 flow [2024-06-28 03:58:24,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5000, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5373, PETRI_PLACES=169, PETRI_TRANSITIONS=350} [2024-06-28 03:58:24,042 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 126 predicate places. [2024-06-28 03:58:24,042 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 350 transitions, 5373 flow [2024-06-28 03:58:24,042 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 03:58:24,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:24,042 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 03:58:24,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 03:58:24,042 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 03:58:24,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:24,043 INFO L85 PathProgramCache]: Analyzing trace with hash 599783037, now seen corresponding path program 4 times [2024-06-28 03:58:24,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:24,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963854249] [2024-06-28 03:58:24,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:24,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:24,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:27,685 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 03:58:27,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:27,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963854249] [2024-06-28 03:58:27,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963854249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:27,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:27,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:58:27,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143804391] [2024-06-28 03:58:27,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:27,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:58:27,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:27,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:58:27,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:58:27,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:58:27,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 350 transitions, 5373 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 03:58:27,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:27,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:58:27,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:29,334 INFO L124 PetriNetUnfolderBase]: 2858/4623 cut-off events. [2024-06-28 03:58:29,335 INFO L125 PetriNetUnfolderBase]: For 98370/98380 co-relation queries the response was YES. [2024-06-28 03:58:29,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29842 conditions, 4623 events. 2858/4623 cut-off events. For 98370/98380 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 28075 event pairs, 764 based on Foata normal form. 26/4644 useless extension candidates. Maximal degree in co-relation 29762. Up to 4084 conditions per place. [2024-06-28 03:58:29,378 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 348 selfloop transitions, 51 changer transitions 0/404 dead transitions. [2024-06-28 03:58:29,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 404 transitions, 6393 flow [2024-06-28 03:58:29,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:58:29,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:58:29,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 195 transitions. [2024-06-28 03:58:29,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42207792207792205 [2024-06-28 03:58:29,396 INFO L175 Difference]: Start difference. First operand has 169 places, 350 transitions, 5373 flow. Second operand 11 states and 195 transitions. [2024-06-28 03:58:29,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 404 transitions, 6393 flow [2024-06-28 03:58:29,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 404 transitions, 6285 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 03:58:29,680 INFO L231 Difference]: Finished difference. Result has 175 places, 351 transitions, 5397 flow [2024-06-28 03:58:29,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5265, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5397, PETRI_PLACES=175, PETRI_TRANSITIONS=351} [2024-06-28 03:58:29,681 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 132 predicate places. [2024-06-28 03:58:29,681 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 351 transitions, 5397 flow [2024-06-28 03:58:29,681 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 03:58:29,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:29,682 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 03:58:29,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 03:58:29,682 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 03:58:29,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:29,683 INFO L85 PathProgramCache]: Analyzing trace with hash 972079407, now seen corresponding path program 5 times [2024-06-28 03:58:29,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:29,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313462607] [2024-06-28 03:58:29,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:29,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:29,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:33,310 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 03:58:33,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:33,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313462607] [2024-06-28 03:58:33,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313462607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:33,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:33,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:58:33,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044745401] [2024-06-28 03:58:33,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:33,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:58:33,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:33,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:58:33,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:58:33,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:58:33,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 351 transitions, 5397 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 03:58:33,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:33,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:58:33,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:35,053 INFO L124 PetriNetUnfolderBase]: 2926/4751 cut-off events. [2024-06-28 03:58:35,053 INFO L125 PetriNetUnfolderBase]: For 102033/102043 co-relation queries the response was YES. [2024-06-28 03:58:35,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30591 conditions, 4751 events. 2926/4751 cut-off events. For 102033/102043 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 29342 event pairs, 782 based on Foata normal form. 26/4772 useless extension candidates. Maximal degree in co-relation 30509. Up to 4200 conditions per place. [2024-06-28 03:58:35,089 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 343 selfloop transitions, 48 changer transitions 0/396 dead transitions. [2024-06-28 03:58:35,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 396 transitions, 6375 flow [2024-06-28 03:58:35,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:58:35,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:58:35,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-28 03:58:35,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4365079365079365 [2024-06-28 03:58:35,096 INFO L175 Difference]: Start difference. First operand has 175 places, 351 transitions, 5397 flow. Second operand 9 states and 165 transitions. [2024-06-28 03:58:35,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 396 transitions, 6375 flow [2024-06-28 03:58:35,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 396 transitions, 6278 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 03:58:35,269 INFO L231 Difference]: Finished difference. Result has 176 places, 352 transitions, 5428 flow [2024-06-28 03:58:35,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5300, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5428, PETRI_PLACES=176, PETRI_TRANSITIONS=352} [2024-06-28 03:58:35,270 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 133 predicate places. [2024-06-28 03:58:35,270 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 352 transitions, 5428 flow [2024-06-28 03:58:35,270 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 03:58:35,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:35,270 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 03:58:35,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 03:58:35,270 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 03:58:35,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:35,271 INFO L85 PathProgramCache]: Analyzing trace with hash 971931537, now seen corresponding path program 6 times [2024-06-28 03:58:35,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:35,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183002613] [2024-06-28 03:58:35,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:35,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:35,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:39,048 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 03:58:39,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:39,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183002613] [2024-06-28 03:58:39,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183002613] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:39,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:39,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:58:39,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532239039] [2024-06-28 03:58:39,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:39,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:58:39,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:39,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:58:39,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:58:39,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:58:39,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 352 transitions, 5428 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 03:58:39,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:39,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:58:39,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:40,700 INFO L124 PetriNetUnfolderBase]: 2974/4831 cut-off events. [2024-06-28 03:58:40,716 INFO L125 PetriNetUnfolderBase]: For 106263/106273 co-relation queries the response was YES. [2024-06-28 03:58:40,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31145 conditions, 4831 events. 2974/4831 cut-off events. For 106263/106273 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 29910 event pairs, 752 based on Foata normal form. 22/4848 useless extension candidates. Maximal degree in co-relation 31062. Up to 3930 conditions per place. [2024-06-28 03:58:40,789 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 351 selfloop transitions, 53 changer transitions 0/409 dead transitions. [2024-06-28 03:58:40,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 409 transitions, 6581 flow [2024-06-28 03:58:40,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:58:40,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:58:40,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 03:58:40,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417989417989418 [2024-06-28 03:58:40,804 INFO L175 Difference]: Start difference. First operand has 176 places, 352 transitions, 5428 flow. Second operand 9 states and 167 transitions. [2024-06-28 03:58:40,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 409 transitions, 6581 flow [2024-06-28 03:58:40,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 409 transitions, 6474 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 03:58:40,996 INFO L231 Difference]: Finished difference. Result has 179 places, 361 transitions, 5628 flow [2024-06-28 03:58:40,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5321, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5628, PETRI_PLACES=179, PETRI_TRANSITIONS=361} [2024-06-28 03:58:40,997 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 136 predicate places. [2024-06-28 03:58:40,997 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 361 transitions, 5628 flow [2024-06-28 03:58:40,997 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 03:58:40,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:40,997 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 03:58:40,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 03:58:40,998 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 03:58:40,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:40,998 INFO L85 PathProgramCache]: Analyzing trace with hash 977656989, now seen corresponding path program 1 times [2024-06-28 03:58:40,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:40,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738344865] [2024-06-28 03:58:40,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:40,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:41,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:44,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:58:44,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:44,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738344865] [2024-06-28 03:58:44,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738344865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:44,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:44,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:58:44,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458360294] [2024-06-28 03:58:44,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:44,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:58:44,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:44,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:58:44,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:58:44,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:58:44,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 361 transitions, 5628 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 03:58:44,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:44,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:58:44,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:46,427 INFO L124 PetriNetUnfolderBase]: 3022/4931 cut-off events. [2024-06-28 03:58:46,427 INFO L125 PetriNetUnfolderBase]: For 113023/113033 co-relation queries the response was YES. [2024-06-28 03:58:46,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31860 conditions, 4931 events. 3022/4931 cut-off events. For 113023/113033 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 30832 event pairs, 792 based on Foata normal form. 22/4948 useless extension candidates. Maximal degree in co-relation 31775. Up to 4150 conditions per place. [2024-06-28 03:58:46,468 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 358 selfloop transitions, 55 changer transitions 0/418 dead transitions. [2024-06-28 03:58:46,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 418 transitions, 6683 flow [2024-06-28 03:58:46,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:58:46,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:58:46,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 197 transitions. [2024-06-28 03:58:46,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4264069264069264 [2024-06-28 03:58:46,471 INFO L175 Difference]: Start difference. First operand has 179 places, 361 transitions, 5628 flow. Second operand 11 states and 197 transitions. [2024-06-28 03:58:46,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 418 transitions, 6683 flow [2024-06-28 03:58:46,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 418 transitions, 6603 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 03:58:46,697 INFO L231 Difference]: Finished difference. Result has 185 places, 362 transitions, 5682 flow [2024-06-28 03:58:46,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5548, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5682, PETRI_PLACES=185, PETRI_TRANSITIONS=362} [2024-06-28 03:58:46,698 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 142 predicate places. [2024-06-28 03:58:46,698 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 362 transitions, 5682 flow [2024-06-28 03:58:46,698 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 03:58:46,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:46,698 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 03:58:46,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 03:58:46,699 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 03:58:46,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:46,699 INFO L85 PathProgramCache]: Analyzing trace with hash 691043677, now seen corresponding path program 7 times [2024-06-28 03:58:46,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:46,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188943830] [2024-06-28 03:58:46,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:46,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:46,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:50,364 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 03:58:50,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:50,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188943830] [2024-06-28 03:58:50,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188943830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:50,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:50,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:58:50,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21488742] [2024-06-28 03:58:50,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:50,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:58:50,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:50,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:58:50,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:58:50,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:58:50,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 362 transitions, 5682 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 03:58:50,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:50,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:58:50,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:52,723 INFO L124 PetriNetUnfolderBase]: 3090/5038 cut-off events. [2024-06-28 03:58:52,724 INFO L125 PetriNetUnfolderBase]: For 118943/118955 co-relation queries the response was YES. [2024-06-28 03:58:52,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32568 conditions, 5038 events. 3090/5038 cut-off events. For 118943/118955 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 31694 event pairs, 758 based on Foata normal form. 28/5061 useless extension candidates. Maximal degree in co-relation 32481. Up to 4256 conditions per place. [2024-06-28 03:58:52,775 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 332 selfloop transitions, 77 changer transitions 0/414 dead transitions. [2024-06-28 03:58:52,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 414 transitions, 6718 flow [2024-06-28 03:58:52,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:58:52,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:58:52,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-28 03:58:52,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-06-28 03:58:52,777 INFO L175 Difference]: Start difference. First operand has 185 places, 362 transitions, 5682 flow. Second operand 10 states and 185 transitions. [2024-06-28 03:58:52,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 414 transitions, 6718 flow [2024-06-28 03:58:53,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 414 transitions, 6584 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 03:58:53,017 INFO L231 Difference]: Finished difference. Result has 185 places, 363 transitions, 5741 flow [2024-06-28 03:58:53,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5548, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5741, PETRI_PLACES=185, PETRI_TRANSITIONS=363} [2024-06-28 03:58:53,018 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 142 predicate places. [2024-06-28 03:58:53,018 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 363 transitions, 5741 flow [2024-06-28 03:58:53,018 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 03:58:53,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:53,018 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 03:58:53,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 03:58:53,018 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:53,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:53,019 INFO L85 PathProgramCache]: Analyzing trace with hash -833955265, now seen corresponding path program 8 times [2024-06-28 03:58:53,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:53,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635910964] [2024-06-28 03:58:53,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:53,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:53,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:58:55,762 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 03:58:55,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:58:55,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635910964] [2024-06-28 03:58:55,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635910964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:58:55,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:58:55,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:58:55,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686180827] [2024-06-28 03:58:55,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:58:55,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:58:55,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:58:55,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:58:55,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:58:55,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:58:55,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 363 transitions, 5741 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 03:58:55,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:58:55,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:58:55,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:58:57,526 INFO L124 PetriNetUnfolderBase]: 3158/5158 cut-off events. [2024-06-28 03:58:57,526 INFO L125 PetriNetUnfolderBase]: For 127400/127443 co-relation queries the response was YES. [2024-06-28 03:58:57,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33438 conditions, 5158 events. 3158/5158 cut-off events. For 127400/127443 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 32720 event pairs, 780 based on Foata normal form. 50/5197 useless extension candidates. Maximal degree in co-relation 33350. Up to 4484 conditions per place. [2024-06-28 03:58:57,573 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 333 selfloop transitions, 74 changer transitions 0/412 dead transitions. [2024-06-28 03:58:57,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 412 transitions, 6767 flow [2024-06-28 03:58:57,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:58:57,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:58:57,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-28 03:58:57,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4261904761904762 [2024-06-28 03:58:57,586 INFO L175 Difference]: Start difference. First operand has 185 places, 363 transitions, 5741 flow. Second operand 10 states and 179 transitions. [2024-06-28 03:58:57,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 412 transitions, 6767 flow [2024-06-28 03:58:57,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 412 transitions, 6605 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 03:58:57,797 INFO L231 Difference]: Finished difference. Result has 187 places, 364 transitions, 5765 flow [2024-06-28 03:58:57,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5579, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5765, PETRI_PLACES=187, PETRI_TRANSITIONS=364} [2024-06-28 03:58:57,798 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 144 predicate places. [2024-06-28 03:58:57,799 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 364 transitions, 5765 flow [2024-06-28 03:58:57,799 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 03:58:57,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:58:57,799 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 03:58:57,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 03:58:57,799 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:58:57,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:58:57,799 INFO L85 PathProgramCache]: Analyzing trace with hash 685681297, now seen corresponding path program 9 times [2024-06-28 03:58:57,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:58:57,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62865061] [2024-06-28 03:58:57,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:58:57,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:58:57,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:01,380 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 03:59:01,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:01,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62865061] [2024-06-28 03:59:01,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62865061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:01,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:01,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:59:01,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575436191] [2024-06-28 03:59:01,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:01,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:59:01,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:01,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:59:01,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:59:01,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:59:01,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 364 transitions, 5765 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 03:59:01,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:01,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:59:01,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:03,356 INFO L124 PetriNetUnfolderBase]: 3198/5238 cut-off events. [2024-06-28 03:59:03,356 INFO L125 PetriNetUnfolderBase]: For 130553/130565 co-relation queries the response was YES. [2024-06-28 03:59:03,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33786 conditions, 5238 events. 3198/5238 cut-off events. For 130553/130565 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 33475 event pairs, 786 based on Foata normal form. 28/5261 useless extension candidates. Maximal degree in co-relation 33697. Up to 4444 conditions per place. [2024-06-28 03:59:03,403 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 329 selfloop transitions, 72 changer transitions 0/406 dead transitions. [2024-06-28 03:59:03,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 406 transitions, 6753 flow [2024-06-28 03:59:03,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:59:03,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:59:03,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-28 03:59:03,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45535714285714285 [2024-06-28 03:59:03,405 INFO L175 Difference]: Start difference. First operand has 187 places, 364 transitions, 5765 flow. Second operand 8 states and 153 transitions. [2024-06-28 03:59:03,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 406 transitions, 6753 flow [2024-06-28 03:59:03,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 406 transitions, 6588 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 03:59:03,640 INFO L231 Difference]: Finished difference. Result has 187 places, 365 transitions, 5787 flow [2024-06-28 03:59:03,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5600, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5787, PETRI_PLACES=187, PETRI_TRANSITIONS=365} [2024-06-28 03:59:03,650 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 144 predicate places. [2024-06-28 03:59:03,651 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 365 transitions, 5787 flow [2024-06-28 03:59:03,651 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 03:59:03,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:03,651 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 03:59:03,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 03:59:03,651 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:03,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:03,652 INFO L85 PathProgramCache]: Analyzing trace with hash 685533427, now seen corresponding path program 10 times [2024-06-28 03:59:03,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:03,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408838219] [2024-06-28 03:59:03,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:03,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:03,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:06,953 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 03:59:06,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:06,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408838219] [2024-06-28 03:59:06,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408838219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:06,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:06,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:59:06,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931103287] [2024-06-28 03:59:06,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:06,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:59:06,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:06,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:59:06,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:59:06,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:59:06,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 365 transitions, 5787 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 03:59:06,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:06,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:59:06,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:08,652 INFO L124 PetriNetUnfolderBase]: 3178/5198 cut-off events. [2024-06-28 03:59:08,652 INFO L125 PetriNetUnfolderBase]: For 125635/125647 co-relation queries the response was YES. [2024-06-28 03:59:08,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33298 conditions, 5198 events. 3178/5198 cut-off events. For 125635/125647 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 32832 event pairs, 460 based on Foata normal form. 24/5217 useless extension candidates. Maximal degree in co-relation 33208. Up to 3474 conditions per place. [2024-06-28 03:59:08,776 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 318 selfloop transitions, 92 changer transitions 0/415 dead transitions. [2024-06-28 03:59:08,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 415 transitions, 6872 flow [2024-06-28 03:59:08,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:59:08,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:59:08,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-28 03:59:08,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-28 03:59:08,778 INFO L175 Difference]: Start difference. First operand has 187 places, 365 transitions, 5787 flow. Second operand 8 states and 156 transitions. [2024-06-28 03:59:08,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 415 transitions, 6872 flow [2024-06-28 03:59:09,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 415 transitions, 6700 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 03:59:09,032 INFO L231 Difference]: Finished difference. Result has 190 places, 370 transitions, 5969 flow [2024-06-28 03:59:09,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5623, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5969, PETRI_PLACES=190, PETRI_TRANSITIONS=370} [2024-06-28 03:59:09,033 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 147 predicate places. [2024-06-28 03:59:09,033 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 370 transitions, 5969 flow [2024-06-28 03:59:09,033 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 03:59:09,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:09,033 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 03:59:09,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 03:59:09,034 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:09,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:09,034 INFO L85 PathProgramCache]: Analyzing trace with hash -833740063, now seen corresponding path program 2 times [2024-06-28 03:59:09,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:09,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773050678] [2024-06-28 03:59:09,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:09,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:09,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:12,652 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 03:59:12,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:12,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773050678] [2024-06-28 03:59:12,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773050678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:12,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:12,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:59:12,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827170847] [2024-06-28 03:59:12,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:12,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:59:12,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:12,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:59:12,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:59:12,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:59:12,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 370 transitions, 5969 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 03:59:12,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:12,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:59:12,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:14,478 INFO L124 PetriNetUnfolderBase]: 3226/5306 cut-off events. [2024-06-28 03:59:14,478 INFO L125 PetriNetUnfolderBase]: For 131858/131901 co-relation queries the response was YES. [2024-06-28 03:59:14,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34099 conditions, 5306 events. 3226/5306 cut-off events. For 131858/131901 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 34062 event pairs, 782 based on Foata normal form. 46/5341 useless extension candidates. Maximal degree in co-relation 34007. Up to 4502 conditions per place. [2024-06-28 03:59:14,524 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 345 selfloop transitions, 77 changer transitions 0/427 dead transitions. [2024-06-28 03:59:14,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 427 transitions, 7044 flow [2024-06-28 03:59:14,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:59:14,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:59:14,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 197 transitions. [2024-06-28 03:59:14,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4264069264069264 [2024-06-28 03:59:14,528 INFO L175 Difference]: Start difference. First operand has 190 places, 370 transitions, 5969 flow. Second operand 11 states and 197 transitions. [2024-06-28 03:59:14,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 427 transitions, 7044 flow [2024-06-28 03:59:14,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 427 transitions, 6792 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 03:59:14,773 INFO L231 Difference]: Finished difference. Result has 193 places, 371 transitions, 5897 flow [2024-06-28 03:59:14,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5717, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5897, PETRI_PLACES=193, PETRI_TRANSITIONS=371} [2024-06-28 03:59:14,774 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 150 predicate places. [2024-06-28 03:59:14,774 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 371 transitions, 5897 flow [2024-06-28 03:59:14,774 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 03:59:14,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:14,776 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 03:59:14,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 03:59:14,777 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:14,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:14,777 INFO L85 PathProgramCache]: Analyzing trace with hash -568042783, now seen corresponding path program 3 times [2024-06-28 03:59:14,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:14,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96893] [2024-06-28 03:59:14,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:14,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:14,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:17,794 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 03:59:17,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:17,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96893] [2024-06-28 03:59:17,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:17,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:17,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:59:17,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143943275] [2024-06-28 03:59:17,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:17,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:59:17,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:17,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:59:17,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:59:17,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:59:17,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 371 transitions, 5897 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 03:59:17,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:17,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:59:17,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:19,638 INFO L124 PetriNetUnfolderBase]: 3274/5402 cut-off events. [2024-06-28 03:59:19,638 INFO L125 PetriNetUnfolderBase]: For 128674/128717 co-relation queries the response was YES. [2024-06-28 03:59:19,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33742 conditions, 5402 events. 3274/5402 cut-off events. For 128674/128717 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 34893 event pairs, 764 based on Foata normal form. 46/5437 useless extension candidates. Maximal degree in co-relation 33651. Up to 3766 conditions per place. [2024-06-28 03:59:19,690 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 332 selfloop transitions, 88 changer transitions 0/425 dead transitions. [2024-06-28 03:59:19,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 425 transitions, 7026 flow [2024-06-28 03:59:19,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:59:19,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:59:19,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-28 03:59:19,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4357142857142857 [2024-06-28 03:59:19,691 INFO L175 Difference]: Start difference. First operand has 193 places, 371 transitions, 5897 flow. Second operand 10 states and 183 transitions. [2024-06-28 03:59:19,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 425 transitions, 7026 flow [2024-06-28 03:59:19,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 425 transitions, 6860 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-28 03:59:19,953 INFO L231 Difference]: Finished difference. Result has 194 places, 372 transitions, 5933 flow [2024-06-28 03:59:19,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5731, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5933, PETRI_PLACES=194, PETRI_TRANSITIONS=372} [2024-06-28 03:59:19,954 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 151 predicate places. [2024-06-28 03:59:19,954 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 372 transitions, 5933 flow [2024-06-28 03:59:19,954 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 03:59:19,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:19,954 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 03:59:19,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 03:59:19,955 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-28 03:59:19,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:19,955 INFO L85 PathProgramCache]: Analyzing trace with hash 691258879, now seen corresponding path program 4 times [2024-06-28 03:59:19,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:19,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716528329] [2024-06-28 03:59:19,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:19,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:19,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:23,100 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 03:59:23,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:23,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716528329] [2024-06-28 03:59:23,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716528329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:23,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:23,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:59:23,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49507783] [2024-06-28 03:59:23,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:23,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:59:23,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:23,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:59:23,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:59:23,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:59:23,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 372 transitions, 5933 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 03:59:23,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:23,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:59:23,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:25,107 INFO L124 PetriNetUnfolderBase]: 3254/5366 cut-off events. [2024-06-28 03:59:25,108 INFO L125 PetriNetUnfolderBase]: For 125026/125038 co-relation queries the response was YES. [2024-06-28 03:59:25,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33368 conditions, 5366 events. 3254/5366 cut-off events. For 125026/125038 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 34663 event pairs, 756 based on Foata normal form. 24/5385 useless extension candidates. Maximal degree in co-relation 33276. Up to 4112 conditions per place. [2024-06-28 03:59:25,161 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 335 selfloop transitions, 85 changer transitions 0/425 dead transitions. [2024-06-28 03:59:25,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 425 transitions, 6904 flow [2024-06-28 03:59:25,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:59:25,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:59:25,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-28 03:59:25,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44285714285714284 [2024-06-28 03:59:25,162 INFO L175 Difference]: Start difference. First operand has 194 places, 372 transitions, 5933 flow. Second operand 10 states and 186 transitions. [2024-06-28 03:59:25,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 425 transitions, 6904 flow [2024-06-28 03:59:25,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 425 transitions, 6720 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 03:59:25,401 INFO L231 Difference]: Finished difference. Result has 195 places, 371 transitions, 5853 flow [2024-06-28 03:59:25,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5677, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5853, PETRI_PLACES=195, PETRI_TRANSITIONS=371} [2024-06-28 03:59:25,402 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 152 predicate places. [2024-06-28 03:59:25,402 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 371 transitions, 5853 flow [2024-06-28 03:59:25,402 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 03:59:25,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:25,402 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 03:59:25,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 03:59:25,403 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 03:59:25,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:25,403 INFO L85 PathProgramCache]: Analyzing trace with hash 126817601, now seen corresponding path program 1 times [2024-06-28 03:59:25,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:25,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932996479] [2024-06-28 03:59:25,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:25,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:27,857 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 03:59:27,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:27,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932996479] [2024-06-28 03:59:27,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932996479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:27,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:27,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:59:27,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648316378] [2024-06-28 03:59:27,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:27,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:59:27,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:27,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:59:27,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:59:27,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:59:27,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 371 transitions, 5853 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 03:59:27,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:27,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:59:27,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:29,260 INFO L124 PetriNetUnfolderBase]: 3098/5139 cut-off events. [2024-06-28 03:59:29,260 INFO L125 PetriNetUnfolderBase]: For 126847/127082 co-relation queries the response was YES. [2024-06-28 03:59:29,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32223 conditions, 5139 events. 3098/5139 cut-off events. For 126847/127082 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 33514 event pairs, 754 based on Foata normal form. 213/5296 useless extension candidates. Maximal degree in co-relation 32131. Up to 4635 conditions per place. [2024-06-28 03:59:29,312 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 314 selfloop transitions, 62 changer transitions 0/407 dead transitions. [2024-06-28 03:59:29,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 407 transitions, 6932 flow [2024-06-28 03:59:29,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:59:29,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:59:29,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 03:59:29,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41369047619047616 [2024-06-28 03:59:29,314 INFO L175 Difference]: Start difference. First operand has 195 places, 371 transitions, 5853 flow. Second operand 8 states and 139 transitions. [2024-06-28 03:59:29,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 407 transitions, 6932 flow [2024-06-28 03:59:29,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 407 transitions, 6688 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-28 03:59:29,547 INFO L231 Difference]: Finished difference. Result has 193 places, 385 transitions, 5943 flow [2024-06-28 03:59:29,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5611, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5943, PETRI_PLACES=193, PETRI_TRANSITIONS=385} [2024-06-28 03:59:29,547 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 150 predicate places. [2024-06-28 03:59:29,547 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 385 transitions, 5943 flow [2024-06-28 03:59:29,548 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 03:59:29,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:29,548 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 03:59:29,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 03:59:29,548 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 03:59:29,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:29,548 INFO L85 PathProgramCache]: Analyzing trace with hash -298839521, now seen corresponding path program 2 times [2024-06-28 03:59:29,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:29,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268646138] [2024-06-28 03:59:29,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:29,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:29,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:31,981 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 03:59:31,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:31,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268646138] [2024-06-28 03:59:31,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268646138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:31,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:31,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:59:31,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679099459] [2024-06-28 03:59:31,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:31,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:59:31,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:31,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:59:31,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:59:32,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:59:32,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 385 transitions, 5943 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 03:59:32,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:32,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:59:32,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:33,274 INFO L124 PetriNetUnfolderBase]: 3084/5121 cut-off events. [2024-06-28 03:59:33,275 INFO L125 PetriNetUnfolderBase]: For 121854/122065 co-relation queries the response was YES. [2024-06-28 03:59:33,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31348 conditions, 5121 events. 3084/5121 cut-off events. For 121854/122065 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 33437 event pairs, 757 based on Foata normal form. 189/5254 useless extension candidates. Maximal degree in co-relation 31256. Up to 4627 conditions per place. [2024-06-28 03:59:33,323 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 312 selfloop transitions, 60 changer transitions 0/403 dead transitions. [2024-06-28 03:59:33,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 403 transitions, 6743 flow [2024-06-28 03:59:33,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:59:33,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:59:33,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-06-28 03:59:33,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2024-06-28 03:59:33,325 INFO L175 Difference]: Start difference. First operand has 193 places, 385 transitions, 5943 flow. Second operand 6 states and 111 transitions. [2024-06-28 03:59:33,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 403 transitions, 6743 flow [2024-06-28 03:59:33,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 403 transitions, 6655 flow, removed 38 selfloop flow, removed 2 redundant places. [2024-06-28 03:59:33,518 INFO L231 Difference]: Finished difference. Result has 197 places, 385 transitions, 5994 flow [2024-06-28 03:59:33,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5855, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5994, PETRI_PLACES=197, PETRI_TRANSITIONS=385} [2024-06-28 03:59:33,519 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 154 predicate places. [2024-06-28 03:59:33,519 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 385 transitions, 5994 flow [2024-06-28 03:59:33,519 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 03:59:33,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:33,519 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 03:59:33,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 03:59:33,519 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 03:59:33,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:33,520 INFO L85 PathProgramCache]: Analyzing trace with hash -298423811, now seen corresponding path program 3 times [2024-06-28 03:59:33,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:33,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208428042] [2024-06-28 03:59:33,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:33,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:36,085 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 03:59:36,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:36,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208428042] [2024-06-28 03:59:36,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208428042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:36,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:36,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:59:36,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392927745] [2024-06-28 03:59:36,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:36,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:59:36,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:36,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:59:36,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:59:36,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:59:36,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 385 transitions, 5994 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 03:59:36,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:36,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:59:36,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:37,449 INFO L124 PetriNetUnfolderBase]: 3071/5101 cut-off events. [2024-06-28 03:59:37,449 INFO L125 PetriNetUnfolderBase]: For 125117/125350 co-relation queries the response was YES. [2024-06-28 03:59:37,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31247 conditions, 5101 events. 3071/5101 cut-off events. For 125117/125350 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 33265 event pairs, 767 based on Foata normal form. 211/5244 useless extension candidates. Maximal degree in co-relation 31153. Up to 4585 conditions per place. [2024-06-28 03:59:37,498 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 308 selfloop transitions, 61 changer transitions 0/400 dead transitions. [2024-06-28 03:59:37,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 400 transitions, 6808 flow [2024-06-28 03:59:37,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:59:37,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:59:37,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-28 03:59:37,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 03:59:37,499 INFO L175 Difference]: Start difference. First operand has 197 places, 385 transitions, 5994 flow. Second operand 6 states and 105 transitions. [2024-06-28 03:59:37,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 400 transitions, 6808 flow [2024-06-28 03:59:37,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 400 transitions, 6675 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-28 03:59:37,720 INFO L231 Difference]: Finished difference. Result has 197 places, 388 transitions, 6037 flow [2024-06-28 03:59:37,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5861, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6037, PETRI_PLACES=197, PETRI_TRANSITIONS=388} [2024-06-28 03:59:37,721 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 154 predicate places. [2024-06-28 03:59:37,721 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 388 transitions, 6037 flow [2024-06-28 03:59:37,721 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 03:59:37,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:37,722 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 03:59:37,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 03:59:37,722 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 03:59:37,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:37,722 INFO L85 PathProgramCache]: Analyzing trace with hash 304013477, now seen corresponding path program 1 times [2024-06-28 03:59:37,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:37,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48596370] [2024-06-28 03:59:37,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:37,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:39,612 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 03:59:39,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:39,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48596370] [2024-06-28 03:59:39,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48596370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:39,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:39,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:59:39,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219935649] [2024-06-28 03:59:39,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:39,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:59:39,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:39,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:59:39,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:59:39,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:59:39,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 388 transitions, 6037 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 03:59:39,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:39,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:59:39,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:41,051 INFO L124 PetriNetUnfolderBase]: 3302/5442 cut-off events. [2024-06-28 03:59:41,052 INFO L125 PetriNetUnfolderBase]: For 122500/122503 co-relation queries the response was YES. [2024-06-28 03:59:41,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33418 conditions, 5442 events. 3302/5442 cut-off events. For 122500/122503 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 35398 event pairs, 997 based on Foata normal form. 3/5442 useless extension candidates. Maximal degree in co-relation 33324. Up to 5135 conditions per place. [2024-06-28 03:59:41,115 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 384 selfloop transitions, 20 changer transitions 0/409 dead transitions. [2024-06-28 03:59:41,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 409 transitions, 7049 flow [2024-06-28 03:59:41,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:59:41,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:59:41,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2024-06-28 03:59:41,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4087301587301587 [2024-06-28 03:59:41,117 INFO L175 Difference]: Start difference. First operand has 197 places, 388 transitions, 6037 flow. Second operand 6 states and 103 transitions. [2024-06-28 03:59:41,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 409 transitions, 7049 flow [2024-06-28 03:59:41,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 409 transitions, 6895 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-28 03:59:41,524 INFO L231 Difference]: Finished difference. Result has 199 places, 394 transitions, 6015 flow [2024-06-28 03:59:41,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5883, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6015, PETRI_PLACES=199, PETRI_TRANSITIONS=394} [2024-06-28 03:59:41,524 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 156 predicate places. [2024-06-28 03:59:41,524 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 394 transitions, 6015 flow [2024-06-28 03:59:41,525 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 03:59:41,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:41,525 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 03:59:41,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 03:59:41,525 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 03:59:41,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:41,526 INFO L85 PathProgramCache]: Analyzing trace with hash 278826243, now seen corresponding path program 2 times [2024-06-28 03:59:41,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:41,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512185052] [2024-06-28 03:59:41,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:41,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:41,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:43,512 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 03:59:43,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:43,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512185052] [2024-06-28 03:59:43,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512185052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:43,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:43,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:59:43,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852029695] [2024-06-28 03:59:43,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:43,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:59:43,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:43,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:59:43,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:59:43,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:59:43,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 394 transitions, 6015 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 03:59:43,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:43,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:59:43,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:44,761 INFO L124 PetriNetUnfolderBase]: 3299/5438 cut-off events. [2024-06-28 03:59:44,762 INFO L125 PetriNetUnfolderBase]: For 125758/125761 co-relation queries the response was YES. [2024-06-28 03:59:44,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33518 conditions, 5438 events. 3299/5438 cut-off events. For 125758/125761 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 35372 event pairs, 997 based on Foata normal form. 3/5438 useless extension candidates. Maximal degree in co-relation 33423. Up to 5135 conditions per place. [2024-06-28 03:59:44,818 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 385 selfloop transitions, 17 changer transitions 0/407 dead transitions. [2024-06-28 03:59:44,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 407 transitions, 6863 flow [2024-06-28 03:59:44,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:59:44,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:59:44,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 90 transitions. [2024-06-28 03:59:44,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 03:59:44,820 INFO L175 Difference]: Start difference. First operand has 199 places, 394 transitions, 6015 flow. Second operand 5 states and 90 transitions. [2024-06-28 03:59:44,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 407 transitions, 6863 flow [2024-06-28 03:59:45,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 407 transitions, 6791 flow, removed 30 selfloop flow, removed 2 redundant places. [2024-06-28 03:59:45,095 INFO L231 Difference]: Finished difference. Result has 202 places, 394 transitions, 5987 flow [2024-06-28 03:59:45,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5943, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5987, PETRI_PLACES=202, PETRI_TRANSITIONS=394} [2024-06-28 03:59:45,096 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 159 predicate places. [2024-06-28 03:59:45,096 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 394 transitions, 5987 flow [2024-06-28 03:59:45,097 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 03:59:45,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:45,097 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 03:59:45,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 03:59:45,097 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 03:59:45,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:45,098 INFO L85 PathProgramCache]: Analyzing trace with hash -298408931, now seen corresponding path program 1 times [2024-06-28 03:59:45,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:45,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220732597] [2024-06-28 03:59:45,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:45,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:45,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:48,340 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 03:59:48,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:48,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220732597] [2024-06-28 03:59:48,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220732597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:48,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:48,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:59:48,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677135612] [2024-06-28 03:59:48,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:48,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:59:48,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:48,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:59:48,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:59:48,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 03:59:48,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 394 transitions, 5987 flow. Second operand has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:48,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:48,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 03:59:48,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:49,637 INFO L124 PetriNetUnfolderBase]: 3059/5077 cut-off events. [2024-06-28 03:59:49,638 INFO L125 PetriNetUnfolderBase]: For 130105/130344 co-relation queries the response was YES. [2024-06-28 03:59:49,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31352 conditions, 5077 events. 3059/5077 cut-off events. For 130105/130344 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 33071 event pairs, 844 based on Foata normal form. 219/5237 useless extension candidates. Maximal degree in co-relation 31255. Up to 4691 conditions per place. [2024-06-28 03:59:49,692 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 361 selfloop transitions, 16 changer transitions 0/408 dead transitions. [2024-06-28 03:59:49,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 408 transitions, 6811 flow [2024-06-28 03:59:49,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:59:49,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:59:49,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 102 transitions. [2024-06-28 03:59:49,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-28 03:59:49,694 INFO L175 Difference]: Start difference. First operand has 202 places, 394 transitions, 5987 flow. Second operand 6 states and 102 transitions. [2024-06-28 03:59:49,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 408 transitions, 6811 flow [2024-06-28 03:59:49,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 408 transitions, 6777 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 03:59:49,960 INFO L231 Difference]: Finished difference. Result has 204 places, 396 transitions, 6030 flow [2024-06-28 03:59:49,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5953, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6030, PETRI_PLACES=204, PETRI_TRANSITIONS=396} [2024-06-28 03:59:49,961 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 161 predicate places. [2024-06-28 03:59:49,961 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 396 transitions, 6030 flow [2024-06-28 03:59:49,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:59:49,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:49,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:59:49,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 03:59:49,961 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 03:59:49,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:49,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1029267140, now seen corresponding path program 1 times [2024-06-28 03:59:49,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:49,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076690122] [2024-06-28 03:59:49,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:49,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:49,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:52,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:59:52,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:52,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076690122] [2024-06-28 03:59:52,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076690122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:52,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:52,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:59:52,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312670105] [2024-06-28 03:59:52,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:52,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:59:52,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:52,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:59:52,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:59:52,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:59:52,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 396 transitions, 6030 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 03:59:52,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:52,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:59:52,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:59:54,521 INFO L124 PetriNetUnfolderBase]: 3335/5480 cut-off events. [2024-06-28 03:59:54,521 INFO L125 PetriNetUnfolderBase]: For 131915/131923 co-relation queries the response was YES. [2024-06-28 03:59:54,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33994 conditions, 5480 events. 3335/5480 cut-off events. For 131915/131923 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 35265 event pairs, 809 based on Foata normal form. 6/5480 useless extension candidates. Maximal degree in co-relation 33896. Up to 5049 conditions per place. [2024-06-28 03:59:54,572 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 385 selfloop transitions, 62 changer transitions 0/452 dead transitions. [2024-06-28 03:59:54,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 452 transitions, 7359 flow [2024-06-28 03:59:54,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:59:54,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:59:54,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-06-28 03:59:54,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-28 03:59:54,574 INFO L175 Difference]: Start difference. First operand has 204 places, 396 transitions, 6030 flow. Second operand 11 states and 175 transitions. [2024-06-28 03:59:54,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 452 transitions, 7359 flow [2024-06-28 03:59:54,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 452 transitions, 7298 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 03:59:54,854 INFO L231 Difference]: Finished difference. Result has 213 places, 417 transitions, 6352 flow [2024-06-28 03:59:54,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=5969, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6352, PETRI_PLACES=213, PETRI_TRANSITIONS=417} [2024-06-28 03:59:54,854 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 170 predicate places. [2024-06-28 03:59:54,854 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 417 transitions, 6352 flow [2024-06-28 03:59:54,855 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 03:59:54,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:59:54,855 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 03:59:54,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 03:59:54,855 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 03:59:54,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:59:54,855 INFO L85 PathProgramCache]: Analyzing trace with hash -363631664, now seen corresponding path program 2 times [2024-06-28 03:59:54,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:59:54,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119408908] [2024-06-28 03:59:54,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:59:54,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:59:54,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:59:59,015 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 03:59:59,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:59:59,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119408908] [2024-06-28 03:59:59,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119408908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:59:59,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:59:59,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:59:59,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681994602] [2024-06-28 03:59:59,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:59:59,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:59:59,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:59:59,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:59:59,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:59:59,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 03:59:59,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 417 transitions, 6352 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 03:59:59,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:59:59,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 03:59:59,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:00,766 INFO L124 PetriNetUnfolderBase]: 3413/5596 cut-off events. [2024-06-28 04:00:00,766 INFO L125 PetriNetUnfolderBase]: For 144924/144924 co-relation queries the response was YES. [2024-06-28 04:00:00,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35447 conditions, 5596 events. 3413/5596 cut-off events. For 144924/144924 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 36044 event pairs, 784 based on Foata normal form. 4/5598 useless extension candidates. Maximal degree in co-relation 35346. Up to 5106 conditions per place. [2024-06-28 04:00:00,818 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 388 selfloop transitions, 84 changer transitions 0/477 dead transitions. [2024-06-28 04:00:00,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 477 transitions, 7971 flow [2024-06-28 04:00:00,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:00:00,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:00:00,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-28 04:00:00,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-06-28 04:00:00,820 INFO L175 Difference]: Start difference. First operand has 213 places, 417 transitions, 6352 flow. Second operand 11 states and 176 transitions. [2024-06-28 04:00:00,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 477 transitions, 7971 flow [2024-06-28 04:00:01,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 477 transitions, 7852 flow, removed 33 selfloop flow, removed 3 redundant places. [2024-06-28 04:00:01,176 INFO L231 Difference]: Finished difference. Result has 223 places, 444 transitions, 6780 flow [2024-06-28 04:00:01,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6266, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6780, PETRI_PLACES=223, PETRI_TRANSITIONS=444} [2024-06-28 04:00:01,176 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 180 predicate places. [2024-06-28 04:00:01,177 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 444 transitions, 6780 flow [2024-06-28 04:00:01,177 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 04:00:01,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:01,177 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 04:00:01,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 04:00:01,177 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 04:00:01,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:01,178 INFO L85 PathProgramCache]: Analyzing trace with hash -363620504, now seen corresponding path program 3 times [2024-06-28 04:00:01,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:01,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769331601] [2024-06-28 04:00:01,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:01,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:01,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:04,124 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 04:00:04,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:04,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769331601] [2024-06-28 04:00:04,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769331601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:04,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:04,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:00:04,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124265058] [2024-06-28 04:00:04,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:04,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:00:04,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:04,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:00:04,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:00:04,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:00:04,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 444 transitions, 6780 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 04:00:04,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:04,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:00:04,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:05,833 INFO L124 PetriNetUnfolderBase]: 3401/5584 cut-off events. [2024-06-28 04:00:05,833 INFO L125 PetriNetUnfolderBase]: For 148440/148440 co-relation queries the response was YES. [2024-06-28 04:00:05,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35784 conditions, 5584 events. 3401/5584 cut-off events. For 148440/148440 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 36003 event pairs, 786 based on Foata normal form. 4/5586 useless extension candidates. Maximal degree in co-relation 35680. Up to 5096 conditions per place. [2024-06-28 04:00:05,898 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 387 selfloop transitions, 81 changer transitions 0/473 dead transitions. [2024-06-28 04:00:05,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 473 transitions, 7991 flow [2024-06-28 04:00:05,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:00:05,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:00:05,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-28 04:00:05,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3968253968253968 [2024-06-28 04:00:05,900 INFO L175 Difference]: Start difference. First operand has 223 places, 444 transitions, 6780 flow. Second operand 9 states and 150 transitions. [2024-06-28 04:00:05,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 473 transitions, 7991 flow [2024-06-28 04:00:06,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 473 transitions, 7901 flow, removed 41 selfloop flow, removed 2 redundant places. [2024-06-28 04:00:06,250 INFO L231 Difference]: Finished difference. Result has 230 places, 444 transitions, 6862 flow [2024-06-28 04:00:06,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6690, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6862, PETRI_PLACES=230, PETRI_TRANSITIONS=444} [2024-06-28 04:00:06,251 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 187 predicate places. [2024-06-28 04:00:06,251 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 444 transitions, 6862 flow [2024-06-28 04:00:06,251 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 04:00:06,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:06,252 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 04:00:06,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 04:00:06,252 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 04:00:06,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:06,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1484435022, now seen corresponding path program 4 times [2024-06-28 04:00:06,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:06,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285350023] [2024-06-28 04:00:06,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:06,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:06,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:09,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:09,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:09,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285350023] [2024-06-28 04:00:09,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285350023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:09,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:09,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:00:09,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983979666] [2024-06-28 04:00:09,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:09,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:00:09,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:09,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:00:09,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:00:09,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:00:09,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 444 transitions, 6862 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 04:00:09,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:09,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:00:09,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:10,482 INFO L124 PetriNetUnfolderBase]: 3411/5598 cut-off events. [2024-06-28 04:00:10,482 INFO L125 PetriNetUnfolderBase]: For 151627/151627 co-relation queries the response was YES. [2024-06-28 04:00:10,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35866 conditions, 5598 events. 3411/5598 cut-off events. For 151627/151627 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 36115 event pairs, 793 based on Foata normal form. 2/5598 useless extension candidates. Maximal degree in co-relation 35760. Up to 5106 conditions per place. [2024-06-28 04:00:10,546 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 385 selfloop transitions, 82 changer transitions 0/472 dead transitions. [2024-06-28 04:00:10,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 472 transitions, 8011 flow [2024-06-28 04:00:10,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:00:10,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:00:10,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-28 04:00:10,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41496598639455784 [2024-06-28 04:00:10,548 INFO L175 Difference]: Start difference. First operand has 230 places, 444 transitions, 6862 flow. Second operand 7 states and 122 transitions. [2024-06-28 04:00:10,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 472 transitions, 8011 flow [2024-06-28 04:00:10,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 472 transitions, 7839 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 04:00:10,881 INFO L231 Difference]: Finished difference. Result has 229 places, 447 transitions, 6900 flow [2024-06-28 04:00:10,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6696, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6900, PETRI_PLACES=229, PETRI_TRANSITIONS=447} [2024-06-28 04:00:10,882 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 186 predicate places. [2024-06-28 04:00:10,882 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 447 transitions, 6900 flow [2024-06-28 04:00:10,882 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 04:00:10,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:10,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:10,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 04:00:10,882 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 04:00:10,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:10,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1484446182, now seen corresponding path program 5 times [2024-06-28 04:00:10,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:10,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758842199] [2024-06-28 04:00:10,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:10,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:10,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:14,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:14,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:14,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758842199] [2024-06-28 04:00:14,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758842199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:14,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:14,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:00:14,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9464163] [2024-06-28 04:00:14,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:14,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:00:14,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:14,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:00:14,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:00:14,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:00:14,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 447 transitions, 6900 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 04:00:14,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:14,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:00:14,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:15,659 INFO L124 PetriNetUnfolderBase]: 3399/5599 cut-off events. [2024-06-28 04:00:15,660 INFO L125 PetriNetUnfolderBase]: For 155299/155307 co-relation queries the response was YES. [2024-06-28 04:00:15,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35742 conditions, 5599 events. 3399/5599 cut-off events. For 155299/155307 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 36467 event pairs, 849 based on Foata normal form. 12/5609 useless extension candidates. Maximal degree in co-relation 35635. Up to 5096 conditions per place. [2024-06-28 04:00:15,712 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 386 selfloop transitions, 91 changer transitions 0/482 dead transitions. [2024-06-28 04:00:15,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 482 transitions, 7988 flow [2024-06-28 04:00:15,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:00:15,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:00:15,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 04:00:15,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-28 04:00:15,714 INFO L175 Difference]: Start difference. First operand has 229 places, 447 transitions, 6900 flow. Second operand 9 states and 153 transitions. [2024-06-28 04:00:15,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 482 transitions, 7988 flow [2024-06-28 04:00:16,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 482 transitions, 7836 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 04:00:16,077 INFO L231 Difference]: Finished difference. Result has 233 places, 448 transitions, 6968 flow [2024-06-28 04:00:16,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6751, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6968, PETRI_PLACES=233, PETRI_TRANSITIONS=448} [2024-06-28 04:00:16,081 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 190 predicate places. [2024-06-28 04:00:16,081 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 448 transitions, 6968 flow [2024-06-28 04:00:16,081 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 04:00:16,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:16,082 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 04:00:16,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 04:00:16,082 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 04:00:16,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:16,082 INFO L85 PathProgramCache]: Analyzing trace with hash -661202388, now seen corresponding path program 6 times [2024-06-28 04:00:16,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:16,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745069069] [2024-06-28 04:00:16,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:16,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:16,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:18,797 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 04:00:18,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:18,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745069069] [2024-06-28 04:00:18,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745069069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:18,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:18,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:00:18,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064615772] [2024-06-28 04:00:18,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:18,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:00:18,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:18,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:00:18,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:00:18,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:00:18,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 448 transitions, 6968 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 04:00:18,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:18,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:00:18,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:20,453 INFO L124 PetriNetUnfolderBase]: 3393/5573 cut-off events. [2024-06-28 04:00:20,453 INFO L125 PetriNetUnfolderBase]: For 151766/151780 co-relation queries the response was YES. [2024-06-28 04:00:20,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35662 conditions, 5573 events. 3393/5573 cut-off events. For 151766/151780 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 35898 event pairs, 811 based on Foata normal form. 5/5568 useless extension candidates. Maximal degree in co-relation 35555. Up to 5066 conditions per place. [2024-06-28 04:00:20,507 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 384 selfloop transitions, 86 changer transitions 0/475 dead transitions. [2024-06-28 04:00:20,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 475 transitions, 8037 flow [2024-06-28 04:00:20,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:00:20,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:00:20,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-06-28 04:00:20,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391156462585034 [2024-06-28 04:00:20,509 INFO L175 Difference]: Start difference. First operand has 233 places, 448 transitions, 6968 flow. Second operand 7 states and 115 transitions. [2024-06-28 04:00:20,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 475 transitions, 8037 flow [2024-06-28 04:00:20,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 475 transitions, 7854 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 04:00:20,833 INFO L231 Difference]: Finished difference. Result has 234 places, 457 transitions, 7087 flow [2024-06-28 04:00:20,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=6785, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7087, PETRI_PLACES=234, PETRI_TRANSITIONS=457} [2024-06-28 04:00:20,833 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 191 predicate places. [2024-06-28 04:00:20,833 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 457 transitions, 7087 flow [2024-06-28 04:00:20,834 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 04:00:20,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:20,834 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 04:00:20,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 04:00:20,838 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 04:00:20,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:20,838 INFO L85 PathProgramCache]: Analyzing trace with hash 834484728, now seen corresponding path program 1 times [2024-06-28 04:00:20,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:20,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593075622] [2024-06-28 04:00:20,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:20,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:23,093 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 04:00:23,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:23,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593075622] [2024-06-28 04:00:23,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593075622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:23,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:23,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:00:23,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311492502] [2024-06-28 04:00:23,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:23,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:00:23,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:23,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:00:23,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:00:23,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:00:23,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 457 transitions, 7087 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 04:00:23,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:23,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:00:23,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:24,797 INFO L124 PetriNetUnfolderBase]: 3403/5606 cut-off events. [2024-06-28 04:00:24,798 INFO L125 PetriNetUnfolderBase]: For 149442/149445 co-relation queries the response was YES. [2024-06-28 04:00:24,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36039 conditions, 5606 events. 3403/5606 cut-off events. For 149442/149445 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 36547 event pairs, 1011 based on Foata normal form. 4/5607 useless extension candidates. Maximal degree in co-relation 35931. Up to 5243 conditions per place. [2024-06-28 04:00:24,860 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 449 selfloop transitions, 28 changer transitions 0/482 dead transitions. [2024-06-28 04:00:24,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 482 transitions, 8257 flow [2024-06-28 04:00:24,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:00:24,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:00:24,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-28 04:00:24,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40816326530612246 [2024-06-28 04:00:24,862 INFO L175 Difference]: Start difference. First operand has 234 places, 457 transitions, 7087 flow. Second operand 7 states and 120 transitions. [2024-06-28 04:00:24,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 482 transitions, 8257 flow [2024-06-28 04:00:25,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 482 transitions, 8183 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-28 04:00:25,357 INFO L231 Difference]: Finished difference. Result has 239 places, 463 transitions, 7153 flow [2024-06-28 04:00:25,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7013, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7153, PETRI_PLACES=239, PETRI_TRANSITIONS=463} [2024-06-28 04:00:25,358 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 196 predicate places. [2024-06-28 04:00:25,358 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 463 transitions, 7153 flow [2024-06-28 04:00:25,358 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 04:00:25,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:25,358 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 04:00:25,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 04:00:25,359 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 04:00:25,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:25,359 INFO L85 PathProgramCache]: Analyzing trace with hash 53680474, now seen corresponding path program 2 times [2024-06-28 04:00:25,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:25,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453488915] [2024-06-28 04:00:25,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:25,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:25,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:27,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:27,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:27,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453488915] [2024-06-28 04:00:27,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453488915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:27,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:27,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:00:27,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30142629] [2024-06-28 04:00:27,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:27,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:00:27,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:27,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:00:27,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:00:27,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:00:27,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 463 transitions, 7153 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 04:00:27,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:27,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:00:27,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:29,081 INFO L124 PetriNetUnfolderBase]: 3413/5622 cut-off events. [2024-06-28 04:00:29,081 INFO L125 PetriNetUnfolderBase]: For 154007/154010 co-relation queries the response was YES. [2024-06-28 04:00:29,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36569 conditions, 5622 events. 3413/5622 cut-off events. For 154007/154010 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 36604 event pairs, 1011 based on Foata normal form. 4/5623 useless extension candidates. Maximal degree in co-relation 36459. Up to 5262 conditions per place. [2024-06-28 04:00:29,142 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 453 selfloop transitions, 26 changer transitions 0/484 dead transitions. [2024-06-28 04:00:29,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 484 transitions, 8297 flow [2024-06-28 04:00:29,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:00:29,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:00:29,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-06-28 04:00:29,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 04:00:29,150 INFO L175 Difference]: Start difference. First operand has 239 places, 463 transitions, 7153 flow. Second operand 6 states and 108 transitions. [2024-06-28 04:00:29,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 484 transitions, 8297 flow [2024-06-28 04:00:29,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 484 transitions, 8240 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-28 04:00:29,532 INFO L231 Difference]: Finished difference. Result has 242 places, 466 transitions, 7196 flow [2024-06-28 04:00:29,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7100, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7196, PETRI_PLACES=242, PETRI_TRANSITIONS=466} [2024-06-28 04:00:29,533 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 199 predicate places. [2024-06-28 04:00:29,533 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 466 transitions, 7196 flow [2024-06-28 04:00:29,533 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 04:00:29,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:29,534 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 04:00:29,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 04:00:29,534 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 04:00:29,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:29,534 INFO L85 PathProgramCache]: Analyzing trace with hash 53686054, now seen corresponding path program 3 times [2024-06-28 04:00:29,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:29,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414776790] [2024-06-28 04:00:29,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:29,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:31,776 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 04:00:31,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:31,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414776790] [2024-06-28 04:00:31,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414776790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:31,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:31,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:00:31,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510385604] [2024-06-28 04:00:31,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:31,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:00:31,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:31,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:00:31,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:00:31,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:00:31,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 466 transitions, 7196 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 04:00:31,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:31,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:00:31,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:33,391 INFO L124 PetriNetUnfolderBase]: 3407/5614 cut-off events. [2024-06-28 04:00:33,391 INFO L125 PetriNetUnfolderBase]: For 156430/156433 co-relation queries the response was YES. [2024-06-28 04:00:33,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36567 conditions, 5614 events. 3407/5614 cut-off events. For 156430/156433 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 36591 event pairs, 1007 based on Foata normal form. 4/5615 useless extension candidates. Maximal degree in co-relation 36455. Up to 5257 conditions per place. [2024-06-28 04:00:33,450 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 452 selfloop transitions, 28 changer transitions 0/485 dead transitions. [2024-06-28 04:00:33,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 485 transitions, 8212 flow [2024-06-28 04:00:33,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:00:33,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:00:33,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-28 04:00:33,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3869047619047619 [2024-06-28 04:00:33,452 INFO L175 Difference]: Start difference. First operand has 242 places, 466 transitions, 7196 flow. Second operand 8 states and 130 transitions. [2024-06-28 04:00:33,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 485 transitions, 8212 flow [2024-06-28 04:00:33,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 485 transitions, 8122 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-28 04:00:33,896 INFO L231 Difference]: Finished difference. Result has 246 places, 466 transitions, 7168 flow [2024-06-28 04:00:33,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7106, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7168, PETRI_PLACES=246, PETRI_TRANSITIONS=466} [2024-06-28 04:00:33,896 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 203 predicate places. [2024-06-28 04:00:33,897 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 466 transitions, 7168 flow [2024-06-28 04:00:33,897 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 04:00:33,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:33,897 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 04:00:33,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 04:00:33,897 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 04:00:33,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:33,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1599534766, now seen corresponding path program 1 times [2024-06-28 04:00:33,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:33,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69413429] [2024-06-28 04:00:33,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:33,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:37,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:37,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:37,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69413429] [2024-06-28 04:00:37,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69413429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:37,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:37,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:00:37,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360278367] [2024-06-28 04:00:37,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:37,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:00:37,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:37,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:00:37,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:00:37,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:00:37,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 466 transitions, 7168 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 04:00:37,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:37,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:00:37,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:39,174 INFO L124 PetriNetUnfolderBase]: 3420/5635 cut-off events. [2024-06-28 04:00:39,174 INFO L125 PetriNetUnfolderBase]: For 159620/159628 co-relation queries the response was YES. [2024-06-28 04:00:39,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36815 conditions, 5635 events. 3420/5635 cut-off events. For 159620/159628 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 36708 event pairs, 885 based on Foata normal form. 9/5639 useless extension candidates. Maximal degree in co-relation 36702. Up to 5115 conditions per place. [2024-06-28 04:00:39,237 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 424 selfloop transitions, 76 changer transitions 0/505 dead transitions. [2024-06-28 04:00:39,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 505 transitions, 8614 flow [2024-06-28 04:00:39,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:00:39,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:00:39,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 04:00:39,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43154761904761907 [2024-06-28 04:00:39,239 INFO L175 Difference]: Start difference. First operand has 246 places, 466 transitions, 7168 flow. Second operand 8 states and 145 transitions. [2024-06-28 04:00:39,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 505 transitions, 8614 flow [2024-06-28 04:00:39,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 505 transitions, 8538 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 04:00:39,650 INFO L231 Difference]: Finished difference. Result has 247 places, 475 transitions, 7412 flow [2024-06-28 04:00:39,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7092, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7412, PETRI_PLACES=247, PETRI_TRANSITIONS=475} [2024-06-28 04:00:39,650 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 204 predicate places. [2024-06-28 04:00:39,650 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 475 transitions, 7412 flow [2024-06-28 04:00:39,651 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 04:00:39,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:39,651 INFO 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 04:00:39,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 04:00:39,651 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 04:00:39,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:39,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1599654736, now seen corresponding path program 2 times [2024-06-28 04:00:39,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:39,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196165590] [2024-06-28 04:00:39,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:39,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:39,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:43,182 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 04:00:43,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:43,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196165590] [2024-06-28 04:00:43,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196165590] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:43,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:43,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:00:43,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153131422] [2024-06-28 04:00:43,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:43,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:00:43,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:43,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:00:43,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:00:43,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:00:43,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 475 transitions, 7412 flow. Second operand has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:43,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:43,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:00:43,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:44,996 INFO L124 PetriNetUnfolderBase]: 3440/5667 cut-off events. [2024-06-28 04:00:44,996 INFO L125 PetriNetUnfolderBase]: For 166629/166640 co-relation queries the response was YES. [2024-06-28 04:00:45,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37591 conditions, 5667 events. 3440/5667 cut-off events. For 166629/166640 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 36907 event pairs, 878 based on Foata normal form. 11/5675 useless extension candidates. Maximal degree in co-relation 37477. Up to 5226 conditions per place. [2024-06-28 04:00:45,061 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 434 selfloop transitions, 72 changer transitions 0/511 dead transitions. [2024-06-28 04:00:45,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 511 transitions, 8715 flow [2024-06-28 04:00:45,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:00:45,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:00:45,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-28 04:00:45,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-28 04:00:45,063 INFO L175 Difference]: Start difference. First operand has 247 places, 475 transitions, 7412 flow. Second operand 8 states and 136 transitions. [2024-06-28 04:00:45,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 511 transitions, 8715 flow [2024-06-28 04:00:45,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 511 transitions, 8585 flow, removed 40 selfloop flow, removed 3 redundant places. [2024-06-28 04:00:45,527 INFO L231 Difference]: Finished difference. Result has 252 places, 487 transitions, 7649 flow [2024-06-28 04:00:45,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7305, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7649, PETRI_PLACES=252, PETRI_TRANSITIONS=487} [2024-06-28 04:00:45,528 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 209 predicate places. [2024-06-28 04:00:45,528 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 487 transitions, 7649 flow [2024-06-28 04:00:45,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:00:45,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:45,528 INFO 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 04:00:45,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 04:00:45,529 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 04:00:45,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:45,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1612434088, now seen corresponding path program 3 times [2024-06-28 04:00:45,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:45,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315292585] [2024-06-28 04:00:45,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:45,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:45,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:48,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:00:48,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:48,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315292585] [2024-06-28 04:00:48,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315292585] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:48,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:48,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:00:48,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990440709] [2024-06-28 04:00:48,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:48,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:00:48,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:48,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:00:48,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:00:48,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:00:48,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 487 transitions, 7649 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 04:00:48,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:48,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:00:48,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:50,713 INFO L124 PetriNetUnfolderBase]: 3453/5691 cut-off events. [2024-06-28 04:00:50,714 INFO L125 PetriNetUnfolderBase]: For 174083/174096 co-relation queries the response was YES. [2024-06-28 04:00:50,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38015 conditions, 5691 events. 3453/5691 cut-off events. For 174083/174096 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 37143 event pairs, 884 based on Foata normal form. 13/5701 useless extension candidates. Maximal degree in co-relation 37899. Up to 5231 conditions per place. [2024-06-28 04:00:50,765 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 432 selfloop transitions, 77 changer transitions 0/514 dead transitions. [2024-06-28 04:00:50,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 514 transitions, 8929 flow [2024-06-28 04:00:50,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:00:50,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:00:50,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-28 04:00:50,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835978835978836 [2024-06-28 04:00:50,767 INFO L175 Difference]: Start difference. First operand has 252 places, 487 transitions, 7649 flow. Second operand 9 states and 145 transitions. [2024-06-28 04:00:50,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 514 transitions, 8929 flow [2024-06-28 04:00:51,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 514 transitions, 8761 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 04:00:51,196 INFO L231 Difference]: Finished difference. Result has 257 places, 493 transitions, 7768 flow [2024-06-28 04:00:51,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7481, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7768, PETRI_PLACES=257, PETRI_TRANSITIONS=493} [2024-06-28 04:00:51,196 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 214 predicate places. [2024-06-28 04:00:51,197 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 493 transitions, 7768 flow [2024-06-28 04:00:51,197 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 04:00:51,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:51,197 INFO 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 04:00:51,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 04:00:51,197 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 04:00:51,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:51,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1612680352, now seen corresponding path program 1 times [2024-06-28 04:00:51,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:51,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508246392] [2024-06-28 04:00:51,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:51,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:51,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:54,899 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 04:00:54,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:54,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508246392] [2024-06-28 04:00:54,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508246392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:54,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:54,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:00:54,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898461624] [2024-06-28 04:00:54,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:54,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:00:54,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:54,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:00:54,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:00:54,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 04:00:54,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 493 transitions, 7768 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 04:00:54,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:54,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 04:00:54,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:00:56,631 INFO L124 PetriNetUnfolderBase]: 3243/5377 cut-off events. [2024-06-28 04:00:56,631 INFO L125 PetriNetUnfolderBase]: For 185834/186053 co-relation queries the response was YES. [2024-06-28 04:00:56,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36178 conditions, 5377 events. 3243/5377 cut-off events. For 185834/186053 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 35300 event pairs, 752 based on Foata normal form. 197/5518 useless extension candidates. Maximal degree in co-relation 36060. Up to 4785 conditions per place. [2024-06-28 04:00:56,681 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 385 selfloop transitions, 80 changer transitions 0/518 dead transitions. [2024-06-28 04:00:56,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 518 transitions, 8808 flow [2024-06-28 04:00:56,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:00:56,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:00:56,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-28 04:00:56,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3994708994708995 [2024-06-28 04:00:56,683 INFO L175 Difference]: Start difference. First operand has 257 places, 493 transitions, 7768 flow. Second operand 9 states and 151 transitions. [2024-06-28 04:00:56,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 518 transitions, 8808 flow [2024-06-28 04:00:57,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 518 transitions, 8623 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-28 04:00:57,052 INFO L231 Difference]: Finished difference. Result has 261 places, 495 transitions, 7798 flow [2024-06-28 04:00:57,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7583, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7798, PETRI_PLACES=261, PETRI_TRANSITIONS=495} [2024-06-28 04:00:57,052 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 218 predicate places. [2024-06-28 04:00:57,053 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 495 transitions, 7798 flow [2024-06-28 04:00:57,053 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 04:00:57,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:00:57,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:00:57,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 04:00:57,053 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 04:00:57,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:00:57,054 INFO L85 PathProgramCache]: Analyzing trace with hash -140118522, now seen corresponding path program 4 times [2024-06-28 04:00:57,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:00:57,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438032030] [2024-06-28 04:00:57,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:00:57,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:00:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:00:59,854 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 04:00:59,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:00:59,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438032030] [2024-06-28 04:00:59,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438032030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:00:59,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:00:59,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:00:59,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435391643] [2024-06-28 04:00:59,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:00:59,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:00:59,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:00:59,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:00:59,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:00:59,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:00:59,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 495 transitions, 7798 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 04:00:59,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:00:59,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:00:59,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:01,582 INFO L124 PetriNetUnfolderBase]: 3482/5733 cut-off events. [2024-06-28 04:01:01,583 INFO L125 PetriNetUnfolderBase]: For 187229/187239 co-relation queries the response was YES. [2024-06-28 04:01:01,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38727 conditions, 5733 events. 3482/5733 cut-off events. For 187229/187239 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 37441 event pairs, 898 based on Foata normal form. 11/5739 useless extension candidates. Maximal degree in co-relation 38608. Up to 5187 conditions per place. [2024-06-28 04:01:01,649 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 419 selfloop transitions, 101 changer transitions 0/525 dead transitions. [2024-06-28 04:01:01,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 525 transitions, 9234 flow [2024-06-28 04:01:01,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:01:01,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:01:01,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-28 04:01:01,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43537414965986393 [2024-06-28 04:01:01,650 INFO L175 Difference]: Start difference. First operand has 261 places, 495 transitions, 7798 flow. Second operand 7 states and 128 transitions. [2024-06-28 04:01:01,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 525 transitions, 9234 flow [2024-06-28 04:01:02,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 525 transitions, 9069 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 04:01:02,229 INFO L231 Difference]: Finished difference. Result has 262 places, 501 transitions, 7961 flow [2024-06-28 04:01:02,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7633, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7961, PETRI_PLACES=262, PETRI_TRANSITIONS=501} [2024-06-28 04:01:02,229 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 219 predicate places. [2024-06-28 04:01:02,230 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 501 transitions, 7961 flow [2024-06-28 04:01:02,230 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 04:01:02,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:02,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:02,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 04:01:02,230 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 04:01:02,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:02,231 INFO L85 PathProgramCache]: Analyzing trace with hash 2089502342, now seen corresponding path program 5 times [2024-06-28 04:01:02,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:02,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609216134] [2024-06-28 04:01:02,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:02,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:02,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:05,298 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 04:01:05,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:05,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609216134] [2024-06-28 04:01:05,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609216134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:05,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:05,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:01:05,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702640451] [2024-06-28 04:01:05,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:05,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:01:05,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:05,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:01:05,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:01:05,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:01:05,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 501 transitions, 7961 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 04:01:05,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:05,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:01:05,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:07,051 INFO L124 PetriNetUnfolderBase]: 3479/5731 cut-off events. [2024-06-28 04:01:07,052 INFO L125 PetriNetUnfolderBase]: For 191117/191130 co-relation queries the response was YES. [2024-06-28 04:01:07,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38725 conditions, 5731 events. 3479/5731 cut-off events. For 191117/191130 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 37432 event pairs, 884 based on Foata normal form. 13/5741 useless extension candidates. Maximal degree in co-relation 38605. Up to 5270 conditions per place. [2024-06-28 04:01:07,111 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 439 selfloop transitions, 75 changer transitions 0/519 dead transitions. [2024-06-28 04:01:07,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 519 transitions, 9045 flow [2024-06-28 04:01:07,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:01:07,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:01:07,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-28 04:01:07,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40816326530612246 [2024-06-28 04:01:07,113 INFO L175 Difference]: Start difference. First operand has 262 places, 501 transitions, 7961 flow. Second operand 7 states and 120 transitions. [2024-06-28 04:01:07,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 519 transitions, 9045 flow [2024-06-28 04:01:07,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 519 transitions, 8860 flow, removed 44 selfloop flow, removed 4 redundant places. [2024-06-28 04:01:07,597 INFO L231 Difference]: Finished difference. Result has 265 places, 501 transitions, 7945 flow [2024-06-28 04:01:07,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7776, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7945, PETRI_PLACES=265, PETRI_TRANSITIONS=501} [2024-06-28 04:01:07,598 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 222 predicate places. [2024-06-28 04:01:07,598 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 501 transitions, 7945 flow [2024-06-28 04:01:07,598 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 04:01:07,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:07,598 INFO 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 04:01:07,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 04:01:07,599 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 04:01:07,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:07,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1977683774, now seen corresponding path program 6 times [2024-06-28 04:01:07,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:07,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530536863] [2024-06-28 04:01:07,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:07,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:07,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:10,609 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 04:01:10,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:10,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530536863] [2024-06-28 04:01:10,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530536863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:10,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:10,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:01:10,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792683973] [2024-06-28 04:01:10,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:10,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:01:10,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:10,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:01:10,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:01:10,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:01:10,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 501 transitions, 7945 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 04:01:10,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:10,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:01:10,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:12,402 INFO L124 PetriNetUnfolderBase]: 3484/5742 cut-off events. [2024-06-28 04:01:12,402 INFO L125 PetriNetUnfolderBase]: For 194855/194900 co-relation queries the response was YES. [2024-06-28 04:01:12,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38709 conditions, 5742 events. 3484/5742 cut-off events. For 194855/194900 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 37559 event pairs, 911 based on Foata normal form. 35/5766 useless extension candidates. Maximal degree in co-relation 38589. Up to 5190 conditions per place. [2024-06-28 04:01:12,474 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 420 selfloop transitions, 100 changer transitions 0/525 dead transitions. [2024-06-28 04:01:12,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 525 transitions, 9316 flow [2024-06-28 04:01:12,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:01:12,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:01:12,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-28 04:01:12,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41836734693877553 [2024-06-28 04:01:12,476 INFO L175 Difference]: Start difference. First operand has 265 places, 501 transitions, 7945 flow. Second operand 7 states and 123 transitions. [2024-06-28 04:01:12,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 525 transitions, 9316 flow [2024-06-28 04:01:13,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 525 transitions, 9166 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 04:01:13,111 INFO L231 Difference]: Finished difference. Result has 266 places, 504 transitions, 8056 flow [2024-06-28 04:01:13,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7795, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8056, PETRI_PLACES=266, PETRI_TRANSITIONS=504} [2024-06-28 04:01:13,112 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 223 predicate places. [2024-06-28 04:01:13,112 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 504 transitions, 8056 flow [2024-06-28 04:01:13,112 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 04:01:13,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:13,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:13,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 04:01:13,112 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 04:01:13,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:13,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1966255934, now seen corresponding path program 7 times [2024-06-28 04:01:13,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:13,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134387657] [2024-06-28 04:01:13,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:13,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:13,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:15,553 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 04:01:15,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:15,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134387657] [2024-06-28 04:01:15,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134387657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:15,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:15,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:01:15,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491170892] [2024-06-28 04:01:15,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:15,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:01:15,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:15,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:01:15,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:01:15,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:01:15,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 504 transitions, 8056 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 04:01:15,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:15,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:01:15,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:17,286 INFO L124 PetriNetUnfolderBase]: 3489/5749 cut-off events. [2024-06-28 04:01:17,286 INFO L125 PetriNetUnfolderBase]: For 200286/200331 co-relation queries the response was YES. [2024-06-28 04:01:17,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38953 conditions, 5749 events. 3489/5749 cut-off events. For 200286/200331 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 37643 event pairs, 911 based on Foata normal form. 35/5773 useless extension candidates. Maximal degree in co-relation 38832. Up to 5196 conditions per place. [2024-06-28 04:01:17,352 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 414 selfloop transitions, 104 changer transitions 0/523 dead transitions. [2024-06-28 04:01:17,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 523 transitions, 9309 flow [2024-06-28 04:01:17,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:01:17,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:01:17,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-28 04:01:17,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4013605442176871 [2024-06-28 04:01:17,354 INFO L175 Difference]: Start difference. First operand has 266 places, 504 transitions, 8056 flow. Second operand 7 states and 118 transitions. [2024-06-28 04:01:17,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 523 transitions, 9309 flow [2024-06-28 04:01:17,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 523 transitions, 8992 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-28 04:01:17,877 INFO L231 Difference]: Finished difference. Result has 268 places, 507 transitions, 8014 flow [2024-06-28 04:01:17,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7753, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8014, PETRI_PLACES=268, PETRI_TRANSITIONS=507} [2024-06-28 04:01:17,877 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 225 predicate places. [2024-06-28 04:01:17,878 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 507 transitions, 8014 flow [2024-06-28 04:01:17,878 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 04:01:17,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:17,878 INFO 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 04:01:17,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 04:01:17,878 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 04:01:17,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:17,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1976367726, now seen corresponding path program 8 times [2024-06-28 04:01:17,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:17,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221515112] [2024-06-28 04:01:17,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:17,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:17,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:20,644 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 04:01:20,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:20,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221515112] [2024-06-28 04:01:20,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221515112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:20,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:20,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:01:20,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270909533] [2024-06-28 04:01:20,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:20,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:01:20,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:20,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:01:20,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:01:20,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:01:20,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 507 transitions, 8014 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 04:01:20,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:20,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:01:20,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:22,661 INFO L124 PetriNetUnfolderBase]: 3483/5737 cut-off events. [2024-06-28 04:01:22,662 INFO L125 PetriNetUnfolderBase]: For 200207/200220 co-relation queries the response was YES. [2024-06-28 04:01:22,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38799 conditions, 5737 events. 3483/5737 cut-off events. For 200207/200220 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 37551 event pairs, 891 based on Foata normal form. 14/5748 useless extension candidates. Maximal degree in co-relation 38677. Up to 5205 conditions per place. [2024-06-28 04:01:22,734 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 438 selfloop transitions, 96 changer transitions 0/539 dead transitions. [2024-06-28 04:01:22,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 539 transitions, 9298 flow [2024-06-28 04:01:22,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:01:22,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:01:22,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 04:01:22,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 04:01:22,736 INFO L175 Difference]: Start difference. First operand has 268 places, 507 transitions, 8014 flow. Second operand 8 states and 147 transitions. [2024-06-28 04:01:22,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 539 transitions, 9298 flow [2024-06-28 04:01:23,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 539 transitions, 9058 flow, removed 42 selfloop flow, removed 4 redundant places. [2024-06-28 04:01:23,342 INFO L231 Difference]: Finished difference. Result has 272 places, 507 transitions, 8004 flow [2024-06-28 04:01:23,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7774, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8004, PETRI_PLACES=272, PETRI_TRANSITIONS=507} [2024-06-28 04:01:23,343 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 229 predicate places. [2024-06-28 04:01:23,343 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 507 transitions, 8004 flow [2024-06-28 04:01:23,343 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 04:01:23,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:23,343 INFO 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 04:01:23,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 04:01:23,343 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 04:01:23,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:23,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1664082370, now seen corresponding path program 9 times [2024-06-28 04:01:23,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:23,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353207647] [2024-06-28 04:01:23,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:23,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:23,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:25,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:01:25,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:25,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353207647] [2024-06-28 04:01:25,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353207647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:25,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:25,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:01:25,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200187606] [2024-06-28 04:01:25,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:25,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:01:25,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:25,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:01:25,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:01:25,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:01:25,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 507 transitions, 8004 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 04:01:25,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:25,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:01:25,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:27,410 INFO L124 PetriNetUnfolderBase]: 3480/5737 cut-off events. [2024-06-28 04:01:27,410 INFO L125 PetriNetUnfolderBase]: For 204942/204987 co-relation queries the response was YES. [2024-06-28 04:01:27,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38845 conditions, 5737 events. 3480/5737 cut-off events. For 204942/204987 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 37590 event pairs, 911 based on Foata normal form. 35/5761 useless extension candidates. Maximal degree in co-relation 38722. Up to 5202 conditions per place. [2024-06-28 04:01:27,474 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 429 selfloop transitions, 91 changer transitions 0/525 dead transitions. [2024-06-28 04:01:27,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 525 transitions, 9106 flow [2024-06-28 04:01:27,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:01:27,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:01:27,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-06-28 04:01:27,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43253968253968256 [2024-06-28 04:01:27,476 INFO L175 Difference]: Start difference. First operand has 272 places, 507 transitions, 8004 flow. Second operand 6 states and 109 transitions. [2024-06-28 04:01:27,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 525 transitions, 9106 flow [2024-06-28 04:01:27,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 525 transitions, 8800 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-28 04:01:27,979 INFO L231 Difference]: Finished difference. Result has 268 places, 507 transitions, 7890 flow [2024-06-28 04:01:27,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7698, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7890, PETRI_PLACES=268, PETRI_TRANSITIONS=507} [2024-06-28 04:01:27,980 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 225 predicate places. [2024-06-28 04:01:27,980 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 507 transitions, 7890 flow [2024-06-28 04:01:27,981 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 04:01:27,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:27,981 INFO 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 04:01:27,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 04:01:27,981 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 04:01:27,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:27,981 INFO L85 PathProgramCache]: Analyzing trace with hash 991386110, now seen corresponding path program 2 times [2024-06-28 04:01:27,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:27,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738780044] [2024-06-28 04:01:27,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:27,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:28,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:31,171 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 04:01:31,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:31,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738780044] [2024-06-28 04:01:31,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738780044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:31,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:31,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:01:31,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037256696] [2024-06-28 04:01:31,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:31,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:01:31,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:31,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:01:31,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:01:31,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 04:01:31,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 507 transitions, 7890 flow. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:31,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:31,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 04:01:31,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:32,765 INFO L124 PetriNetUnfolderBase]: 3272/5423 cut-off events. [2024-06-28 04:01:32,766 INFO L125 PetriNetUnfolderBase]: For 196633/196886 co-relation queries the response was YES. [2024-06-28 04:01:32,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36432 conditions, 5423 events. 3272/5423 cut-off events. For 196633/196886 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 35654 event pairs, 765 based on Foata normal form. 223/5569 useless extension candidates. Maximal degree in co-relation 36310. Up to 4795 conditions per place. [2024-06-28 04:01:32,828 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 388 selfloop transitions, 82 changer transitions 0/523 dead transitions. [2024-06-28 04:01:32,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 523 transitions, 8916 flow [2024-06-28 04:01:32,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:01:32,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:01:32,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-28 04:01:32,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4013605442176871 [2024-06-28 04:01:32,829 INFO L175 Difference]: Start difference. First operand has 268 places, 507 transitions, 7890 flow. Second operand 7 states and 118 transitions. [2024-06-28 04:01:32,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 523 transitions, 8916 flow [2024-06-28 04:01:33,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 523 transitions, 8728 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-28 04:01:33,282 INFO L231 Difference]: Finished difference. Result has 269 places, 509 transitions, 7924 flow [2024-06-28 04:01:33,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7702, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7924, PETRI_PLACES=269, PETRI_TRANSITIONS=509} [2024-06-28 04:01:33,284 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 226 predicate places. [2024-06-28 04:01:33,284 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 509 transitions, 7924 flow [2024-06-28 04:01:33,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:33,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:33,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:33,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 04:01:33,285 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 04:01:33,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:33,285 INFO L85 PathProgramCache]: Analyzing trace with hash 991861340, now seen corresponding path program 3 times [2024-06-28 04:01:33,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:33,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977748684] [2024-06-28 04:01:33,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:33,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:33,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:36,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:01:36,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:36,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977748684] [2024-06-28 04:01:36,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977748684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:36,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:36,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:01:36,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361685374] [2024-06-28 04:01:36,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:36,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:01:36,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:36,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:01:36,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:01:36,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 04:01:36,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 509 transitions, 7924 flow. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:36,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:36,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 04:01:36,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:38,371 INFO L124 PetriNetUnfolderBase]: 3286/5445 cut-off events. [2024-06-28 04:01:38,371 INFO L125 PetriNetUnfolderBase]: For 198281/198534 co-relation queries the response was YES. [2024-06-28 04:01:38,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36694 conditions, 5445 events. 3286/5445 cut-off events. For 198281/198534 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 35791 event pairs, 767 based on Foata normal form. 223/5591 useless extension candidates. Maximal degree in co-relation 36572. Up to 4755 conditions per place. [2024-06-28 04:01:38,442 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 387 selfloop transitions, 88 changer transitions 0/528 dead transitions. [2024-06-28 04:01:38,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 528 transitions, 9122 flow [2024-06-28 04:01:38,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:01:38,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:01:38,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-28 04:01:38,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-28 04:01:38,444 INFO L175 Difference]: Start difference. First operand has 269 places, 509 transitions, 7924 flow. Second operand 7 states and 119 transitions. [2024-06-28 04:01:38,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 528 transitions, 9122 flow [2024-06-28 04:01:38,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 528 transitions, 8918 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-28 04:01:38,941 INFO L231 Difference]: Finished difference. Result has 271 places, 513 transitions, 8009 flow [2024-06-28 04:01:38,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7720, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8009, PETRI_PLACES=271, PETRI_TRANSITIONS=513} [2024-06-28 04:01:38,943 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 228 predicate places. [2024-06-28 04:01:38,943 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 513 transitions, 8009 flow [2024-06-28 04:01:38,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 9 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:01:38,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:38,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:38,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 04:01:38,944 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 04:01:38,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:38,944 INFO L85 PathProgramCache]: Analyzing trace with hash 578079230, now seen corresponding path program 4 times [2024-06-28 04:01:38,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:38,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601195332] [2024-06-28 04:01:38,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:38,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:38,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:42,291 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 04:01:42,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:42,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601195332] [2024-06-28 04:01:42,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601195332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:42,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:42,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:01:42,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807429755] [2024-06-28 04:01:42,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:42,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:01:42,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:42,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:01:42,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:01:42,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 42 [2024-06-28 04:01:42,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 513 transitions, 8009 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 04:01:42,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:42,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 42 [2024-06-28 04:01:42,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:43,827 INFO L124 PetriNetUnfolderBase]: 3270/5421 cut-off events. [2024-06-28 04:01:43,827 INFO L125 PetriNetUnfolderBase]: For 196390/196609 co-relation queries the response was YES. [2024-06-28 04:01:43,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36492 conditions, 5421 events. 3270/5421 cut-off events. For 196390/196609 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 35650 event pairs, 759 based on Foata normal form. 197/5556 useless extension candidates. Maximal degree in co-relation 36369. Up to 4817 conditions per place. [2024-06-28 04:01:43,887 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 401 selfloop transitions, 79 changer transitions 0/533 dead transitions. [2024-06-28 04:01:43,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 533 transitions, 9029 flow [2024-06-28 04:01:43,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:01:43,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:01:43,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-28 04:01:43,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4217687074829932 [2024-06-28 04:01:43,888 INFO L175 Difference]: Start difference. First operand has 271 places, 513 transitions, 8009 flow. Second operand 7 states and 124 transitions. [2024-06-28 04:01:43,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 533 transitions, 9029 flow [2024-06-28 04:01:44,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 533 transitions, 8848 flow, removed 43 selfloop flow, removed 3 redundant places. [2024-06-28 04:01:44,251 INFO L231 Difference]: Finished difference. Result has 275 places, 513 transitions, 7997 flow [2024-06-28 04:01:44,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7828, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7997, PETRI_PLACES=275, PETRI_TRANSITIONS=513} [2024-06-28 04:01:44,252 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 232 predicate places. [2024-06-28 04:01:44,252 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 513 transitions, 7997 flow [2024-06-28 04:01:44,252 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 04:01:44,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:44,252 INFO 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 04:01:44,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 04:01:44,252 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 04:01:44,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:44,253 INFO L85 PathProgramCache]: Analyzing trace with hash 96362436, now seen corresponding path program 1 times [2024-06-28 04:01:44,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:44,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769841668] [2024-06-28 04:01:44,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:44,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:44,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:46,655 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 04:01:46,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:46,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769841668] [2024-06-28 04:01:46,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769841668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:46,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:46,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:01:46,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652392396] [2024-06-28 04:01:46,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:46,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:01:46,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:46,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:01:46,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:01:46,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:01:46,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 513 transitions, 7997 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 04:01:46,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:46,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:01:46,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:48,207 INFO L124 PetriNetUnfolderBase]: 3510/5776 cut-off events. [2024-06-28 04:01:48,207 INFO L125 PetriNetUnfolderBase]: For 194751/194754 co-relation queries the response was YES. [2024-06-28 04:01:48,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38857 conditions, 5776 events. 3510/5776 cut-off events. For 194751/194754 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 37799 event pairs, 978 based on Foata normal form. 4/5777 useless extension candidates. Maximal degree in co-relation 38732. Up to 5393 conditions per place. [2024-06-28 04:01:48,272 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 509 selfloop transitions, 25 changer transitions 0/539 dead transitions. [2024-06-28 04:01:48,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 539 transitions, 9327 flow [2024-06-28 04:01:48,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:01:48,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:01:48,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-28 04:01:48,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40816326530612246 [2024-06-28 04:01:48,274 INFO L175 Difference]: Start difference. First operand has 275 places, 513 transitions, 7997 flow. Second operand 7 states and 120 transitions. [2024-06-28 04:01:48,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 539 transitions, 9327 flow [2024-06-28 04:01:48,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 539 transitions, 9155 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 04:01:48,776 INFO L231 Difference]: Finished difference. Result has 276 places, 517 transitions, 7968 flow [2024-06-28 04:01:48,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7825, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7968, PETRI_PLACES=276, PETRI_TRANSITIONS=517} [2024-06-28 04:01:48,777 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 233 predicate places. [2024-06-28 04:01:48,777 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 517 transitions, 7968 flow [2024-06-28 04:01:48,777 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 04:01:48,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:48,777 INFO 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 04:01:48,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 04:01:48,777 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 04:01:48,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:48,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1966247006, now seen corresponding path program 2 times [2024-06-28 04:01:48,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:48,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826433973] [2024-06-28 04:01:48,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:48,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:48,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:51,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:01:51,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:51,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826433973] [2024-06-28 04:01:51,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826433973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:51,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:51,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:01:51,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220644874] [2024-06-28 04:01:51,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:51,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:01:51,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:51,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:01:51,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:01:51,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:01:51,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 517 transitions, 7968 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 04:01:51,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:51,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:01:51,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:52,839 INFO L124 PetriNetUnfolderBase]: 3518/5788 cut-off events. [2024-06-28 04:01:52,839 INFO L125 PetriNetUnfolderBase]: For 199374/199377 co-relation queries the response was YES. [2024-06-28 04:01:52,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38954 conditions, 5788 events. 3518/5788 cut-off events. For 199374/199377 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 37880 event pairs, 1016 based on Foata normal form. 4/5789 useless extension candidates. Maximal degree in co-relation 38828. Up to 5440 conditions per place. [2024-06-28 04:01:52,910 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 508 selfloop transitions, 22 changer transitions 0/535 dead transitions. [2024-06-28 04:01:52,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 535 transitions, 9124 flow [2024-06-28 04:01:52,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 04:01:52,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 04:01:52,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 114 transitions. [2024-06-28 04:01:52,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3877551020408163 [2024-06-28 04:01:52,912 INFO L175 Difference]: Start difference. First operand has 276 places, 517 transitions, 7968 flow. Second operand 7 states and 114 transitions. [2024-06-28 04:01:52,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 535 transitions, 9124 flow [2024-06-28 04:01:53,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 535 transitions, 9036 flow, removed 33 selfloop flow, removed 3 redundant places. [2024-06-28 04:01:53,492 INFO L231 Difference]: Finished difference. Result has 280 places, 519 transitions, 7979 flow [2024-06-28 04:01:53,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7894, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7979, PETRI_PLACES=280, PETRI_TRANSITIONS=519} [2024-06-28 04:01:53,492 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 237 predicate places. [2024-06-28 04:01:53,492 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 519 transitions, 7979 flow [2024-06-28 04:01:53,493 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 04:01:53,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:53,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:01:53,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 04:01:53,493 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 04:01:53,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:53,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1664091298, now seen corresponding path program 3 times [2024-06-28 04:01:53,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:53,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036108500] [2024-06-28 04:01:53,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:53,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:53,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:01:55,853 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 04:01:55,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:01:55,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036108500] [2024-06-28 04:01:55,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036108500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:01:55,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:01:55,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 04:01:55,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453867543] [2024-06-28 04:01:55,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:01:55,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 04:01:55,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:01:55,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 04:01:55,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 04:01:55,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:01:55,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 519 transitions, 7979 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 04:01:55,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:01:55,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:01:55,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:01:57,443 INFO L124 PetriNetUnfolderBase]: 3513/5781 cut-off events. [2024-06-28 04:01:57,443 INFO L125 PetriNetUnfolderBase]: For 201440/201443 co-relation queries the response was YES. [2024-06-28 04:01:57,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38823 conditions, 5781 events. 3513/5781 cut-off events. For 201440/201443 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 37900 event pairs, 977 based on Foata normal form. 4/5782 useless extension candidates. Maximal degree in co-relation 38695. Up to 5414 conditions per place. [2024-06-28 04:01:57,515 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 512 selfloop transitions, 21 changer transitions 0/538 dead transitions. [2024-06-28 04:01:57,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 538 transitions, 9109 flow [2024-06-28 04:01:57,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 04:01:57,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 04:01:57,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-06-28 04:01:57,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4246031746031746 [2024-06-28 04:01:57,516 INFO L175 Difference]: Start difference. First operand has 280 places, 519 transitions, 7979 flow. Second operand 6 states and 107 transitions. [2024-06-28 04:01:57,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 538 transitions, 9109 flow [2024-06-28 04:01:58,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 538 transitions, 9022 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 04:01:58,081 INFO L231 Difference]: Finished difference. Result has 281 places, 519 transitions, 7942 flow [2024-06-28 04:01:58,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7892, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7942, PETRI_PLACES=281, PETRI_TRANSITIONS=519} [2024-06-28 04:01:58,081 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 238 predicate places. [2024-06-28 04:01:58,082 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 519 transitions, 7942 flow [2024-06-28 04:01:58,082 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 04:01:58,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:01:58,082 INFO L208 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 04:01:58,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 04:01:58,082 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 04:01:58,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:01:58,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1549228995, now seen corresponding path program 1 times [2024-06-28 04:01:58,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:01:58,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461003703] [2024-06-28 04:01:58,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:01:58,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:01:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:01,450 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 04:02:01,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:01,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461003703] [2024-06-28 04:02:01,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461003703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:01,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:01,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:02:01,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383950783] [2024-06-28 04:02:01,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:01,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:02:01,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:01,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:02:01,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:02:01,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:02:01,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 519 transitions, 7942 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 04:02:01,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:01,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:02:01,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:03,360 INFO L124 PetriNetUnfolderBase]: 3648/5992 cut-off events. [2024-06-28 04:02:03,360 INFO L125 PetriNetUnfolderBase]: For 231407/231415 co-relation queries the response was YES. [2024-06-28 04:02:03,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40425 conditions, 5992 events. 3648/5992 cut-off events. For 231407/231415 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 39194 event pairs, 608 based on Foata normal form. 16/6006 useless extension candidates. Maximal degree in co-relation 40296. Up to 4953 conditions per place. [2024-06-28 04:02:03,432 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 450 selfloop transitions, 130 changer transitions 0/585 dead transitions. [2024-06-28 04:02:03,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 585 transitions, 9650 flow [2024-06-28 04:02:03,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:02:03,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:02:03,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-28 04:02:03,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4069264069264069 [2024-06-28 04:02:03,434 INFO L175 Difference]: Start difference. First operand has 281 places, 519 transitions, 7942 flow. Second operand 11 states and 188 transitions. [2024-06-28 04:02:03,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 585 transitions, 9650 flow [2024-06-28 04:02:04,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 585 transitions, 9601 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 04:02:04,013 INFO L231 Difference]: Finished difference. Result has 289 places, 534 transitions, 8485 flow [2024-06-28 04:02:04,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=7893, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8485, PETRI_PLACES=289, PETRI_TRANSITIONS=534} [2024-06-28 04:02:04,014 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 246 predicate places. [2024-06-28 04:02:04,014 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 534 transitions, 8485 flow [2024-06-28 04:02:04,014 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 04:02:04,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:04,014 INFO L208 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 04:02:04,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 04:02:04,014 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 04:02:04,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:04,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1283205285, now seen corresponding path program 2 times [2024-06-28 04:02:04,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:04,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969360978] [2024-06-28 04:02:04,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:04,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:04,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:07,759 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 04:02:07,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:07,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969360978] [2024-06-28 04:02:07,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969360978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:07,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:07,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:02:07,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926429260] [2024-06-28 04:02:07,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:07,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:02:07,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:07,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:02:07,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:02:07,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:02:07,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 534 transitions, 8485 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 04:02:07,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:07,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:02:07,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:09,915 INFO L124 PetriNetUnfolderBase]: 3684/6045 cut-off events. [2024-06-28 04:02:09,915 INFO L125 PetriNetUnfolderBase]: For 245581/245589 co-relation queries the response was YES. [2024-06-28 04:02:09,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41680 conditions, 6045 events. 3684/6045 cut-off events. For 245581/245589 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 39582 event pairs, 879 based on Foata normal form. 18/6061 useless extension candidates. Maximal degree in co-relation 41548. Up to 5476 conditions per place. [2024-06-28 04:02:09,993 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 477 selfloop transitions, 94 changer transitions 0/576 dead transitions. [2024-06-28 04:02:09,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 576 transitions, 9797 flow [2024-06-28 04:02:09,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:02:09,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:02:09,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-28 04:02:09,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38961038961038963 [2024-06-28 04:02:09,995 INFO L175 Difference]: Start difference. First operand has 289 places, 534 transitions, 8485 flow. Second operand 11 states and 180 transitions. [2024-06-28 04:02:09,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 576 transitions, 9797 flow [2024-06-28 04:02:10,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 576 transitions, 9687 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 04:02:10,976 INFO L231 Difference]: Finished difference. Result has 295 places, 535 transitions, 8583 flow [2024-06-28 04:02:10,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8377, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8583, PETRI_PLACES=295, PETRI_TRANSITIONS=535} [2024-06-28 04:02:10,977 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 252 predicate places. [2024-06-28 04:02:10,977 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 535 transitions, 8583 flow [2024-06-28 04:02:10,977 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 04:02:10,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:10,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:02:10,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 04:02:10,978 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 04:02:10,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:10,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1541819685, now seen corresponding path program 3 times [2024-06-28 04:02:10,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:10,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699342517] [2024-06-28 04:02:10,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:10,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:10,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:14,150 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 04:02:14,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:14,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699342517] [2024-06-28 04:02:14,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699342517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:14,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:14,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:02:14,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773768398] [2024-06-28 04:02:14,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:14,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:02:14,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:14,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:02:14,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:02:14,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:02:14,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 535 transitions, 8583 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 04:02:14,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:14,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:02:14,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:16,226 INFO L124 PetriNetUnfolderBase]: 3736/6125 cut-off events. [2024-06-28 04:02:16,226 INFO L125 PetriNetUnfolderBase]: For 249004/249012 co-relation queries the response was YES. [2024-06-28 04:02:16,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42409 conditions, 6125 events. 3736/6125 cut-off events. For 249004/249012 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 40142 event pairs, 874 based on Foata normal form. 16/6139 useless extension candidates. Maximal degree in co-relation 42275. Up to 5468 conditions per place. [2024-06-28 04:02:16,293 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 476 selfloop transitions, 107 changer transitions 0/588 dead transitions. [2024-06-28 04:02:16,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 588 transitions, 10052 flow [2024-06-28 04:02:16,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 04:02:16,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 04:02:16,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 195 transitions. [2024-06-28 04:02:16,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3869047619047619 [2024-06-28 04:02:16,294 INFO L175 Difference]: Start difference. First operand has 295 places, 535 transitions, 8583 flow. Second operand 12 states and 195 transitions. [2024-06-28 04:02:16,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 588 transitions, 10052 flow [2024-06-28 04:02:17,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 588 transitions, 9839 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 04:02:17,075 INFO L231 Difference]: Finished difference. Result has 300 places, 542 transitions, 8752 flow [2024-06-28 04:02:17,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8370, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8752, PETRI_PLACES=300, PETRI_TRANSITIONS=542} [2024-06-28 04:02:17,076 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 257 predicate places. [2024-06-28 04:02:17,076 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 542 transitions, 8752 flow [2024-06-28 04:02:17,076 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 04:02:17,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:17,076 INFO L208 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 04:02:17,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 04:02:17,077 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 04:02:17,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:17,077 INFO L85 PathProgramCache]: Analyzing trace with hash -968907887, now seen corresponding path program 4 times [2024-06-28 04:02:17,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:17,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429688003] [2024-06-28 04:02:17,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:17,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:17,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:20,800 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 04:02:20,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:20,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429688003] [2024-06-28 04:02:20,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429688003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:20,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:20,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:02:20,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372608946] [2024-06-28 04:02:20,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:20,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:02:20,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:20,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:02:20,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:02:20,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:02:20,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 542 transitions, 8752 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 04:02:20,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:20,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:02:20,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:22,887 INFO L124 PetriNetUnfolderBase]: 3772/6162 cut-off events. [2024-06-28 04:02:22,887 INFO L125 PetriNetUnfolderBase]: For 257697/257697 co-relation queries the response was YES. [2024-06-28 04:02:22,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42951 conditions, 6162 events. 3772/6162 cut-off events. For 257697/257697 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 40067 event pairs, 826 based on Foata normal form. 10/6170 useless extension candidates. Maximal degree in co-relation 42815. Up to 5612 conditions per place. [2024-06-28 04:02:22,960 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 485 selfloop transitions, 86 changer transitions 0/576 dead transitions. [2024-06-28 04:02:22,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 576 transitions, 10040 flow [2024-06-28 04:02:22,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:02:22,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:02:22,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-28 04:02:22,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880952380952381 [2024-06-28 04:02:22,962 INFO L175 Difference]: Start difference. First operand has 300 places, 542 transitions, 8752 flow. Second operand 10 states and 163 transitions. [2024-06-28 04:02:22,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 576 transitions, 10040 flow [2024-06-28 04:02:23,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 576 transitions, 9838 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 04:02:23,935 INFO L231 Difference]: Finished difference. Result has 302 places, 543 transitions, 8744 flow [2024-06-28 04:02:23,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8550, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8744, PETRI_PLACES=302, PETRI_TRANSITIONS=543} [2024-06-28 04:02:23,936 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 259 predicate places. [2024-06-28 04:02:23,936 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 543 transitions, 8744 flow [2024-06-28 04:02:23,936 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 04:02:23,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:23,936 INFO L208 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 04:02:23,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 04:02:23,937 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 04:02:23,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:23,937 INFO L85 PathProgramCache]: Analyzing trace with hash -979632647, now seen corresponding path program 5 times [2024-06-28 04:02:23,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:23,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255342677] [2024-06-28 04:02:23,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:23,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:23,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:27,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:02:27,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:27,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255342677] [2024-06-28 04:02:27,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255342677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:27,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:27,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:02:27,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028848485] [2024-06-28 04:02:27,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:27,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:02:27,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:27,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:02:27,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:02:27,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:02:27,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 543 transitions, 8744 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 04:02:27,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:27,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:02:27,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:29,457 INFO L124 PetriNetUnfolderBase]: 3808/6218 cut-off events. [2024-06-28 04:02:29,457 INFO L125 PetriNetUnfolderBase]: For 264078/264078 co-relation queries the response was YES. [2024-06-28 04:02:29,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43275 conditions, 6218 events. 3808/6218 cut-off events. For 264078/264078 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 40514 event pairs, 834 based on Foata normal form. 10/6226 useless extension candidates. Maximal degree in co-relation 43138. Up to 5668 conditions per place. [2024-06-28 04:02:29,538 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 486 selfloop transitions, 89 changer transitions 0/580 dead transitions. [2024-06-28 04:02:29,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 580 transitions, 10048 flow [2024-06-28 04:02:29,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 04:02:29,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 04:02:29,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 188 transitions. [2024-06-28 04:02:29,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.373015873015873 [2024-06-28 04:02:29,539 INFO L175 Difference]: Start difference. First operand has 302 places, 543 transitions, 8744 flow. Second operand 12 states and 188 transitions. [2024-06-28 04:02:29,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 580 transitions, 10048 flow [2024-06-28 04:02:30,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 580 transitions, 9875 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 04:02:30,501 INFO L231 Difference]: Finished difference. Result has 306 places, 544 transitions, 8773 flow [2024-06-28 04:02:30,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8571, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8773, PETRI_PLACES=306, PETRI_TRANSITIONS=544} [2024-06-28 04:02:30,502 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 263 predicate places. [2024-06-28 04:02:30,502 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 544 transitions, 8773 flow [2024-06-28 04:02:30,502 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 04:02:30,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:30,502 INFO L208 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 04:02:30,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 04:02:30,503 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 04:02:30,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:30,503 INFO L85 PathProgramCache]: Analyzing trace with hash -979959077, now seen corresponding path program 6 times [2024-06-28 04:02:30,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:30,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252270152] [2024-06-28 04:02:30,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:30,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:30,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:34,121 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 04:02:34,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:34,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252270152] [2024-06-28 04:02:34,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252270152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:34,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:34,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:02:34,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815299785] [2024-06-28 04:02:34,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:34,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:02:34,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:34,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:02:34,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:02:34,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:02:34,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 544 transitions, 8773 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 04:02:34,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:34,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:02:34,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:36,249 INFO L124 PetriNetUnfolderBase]: 3844/6274 cut-off events. [2024-06-28 04:02:36,249 INFO L125 PetriNetUnfolderBase]: For 267690/267690 co-relation queries the response was YES. [2024-06-28 04:02:36,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43729 conditions, 6274 events. 3844/6274 cut-off events. For 267690/267690 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 40843 event pairs, 830 based on Foata normal form. 8/6280 useless extension candidates. Maximal degree in co-relation 43591. Up to 5618 conditions per place. [2024-06-28 04:02:36,337 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 484 selfloop transitions, 97 changer transitions 0/586 dead transitions. [2024-06-28 04:02:36,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 586 transitions, 10151 flow [2024-06-28 04:02:36,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 04:02:36,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 04:02:36,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 190 transitions. [2024-06-28 04:02:36,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.376984126984127 [2024-06-28 04:02:36,338 INFO L175 Difference]: Start difference. First operand has 306 places, 544 transitions, 8773 flow. Second operand 12 states and 190 transitions. [2024-06-28 04:02:36,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 586 transitions, 10151 flow [2024-06-28 04:02:37,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 586 transitions, 9995 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 04:02:37,298 INFO L231 Difference]: Finished difference. Result has 310 places, 547 transitions, 8901 flow [2024-06-28 04:02:37,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8617, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8901, PETRI_PLACES=310, PETRI_TRANSITIONS=547} [2024-06-28 04:02:37,298 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 267 predicate places. [2024-06-28 04:02:37,298 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 547 transitions, 8901 flow [2024-06-28 04:02:37,299 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 04:02:37,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:37,299 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, 1] [2024-06-28 04:02:37,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 04:02:37,299 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 04:02:37,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:37,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1460691135, now seen corresponding path program 1 times [2024-06-28 04:02:37,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:37,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134140562] [2024-06-28 04:02:37,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:37,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:37,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:40,571 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 04:02:40,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:40,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134140562] [2024-06-28 04:02:40,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134140562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:40,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:40,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:02:40,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058478637] [2024-06-28 04:02:40,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:40,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:02:40,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:40,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:02:40,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:02:40,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:02:40,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 547 transitions, 8901 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 04:02:40,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:40,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:02:40,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:42,911 INFO L124 PetriNetUnfolderBase]: 3857/6308 cut-off events. [2024-06-28 04:02:42,911 INFO L125 PetriNetUnfolderBase]: For 266136/266146 co-relation queries the response was YES. [2024-06-28 04:02:42,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44195 conditions, 6308 events. 3857/6308 cut-off events. For 266136/266146 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 41437 event pairs, 841 based on Foata normal form. 11/6314 useless extension candidates. Maximal degree in co-relation 44055. Up to 5308 conditions per place. [2024-06-28 04:02:43,008 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 390 selfloop transitions, 200 changer transitions 0/595 dead transitions. [2024-06-28 04:02:43,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 595 transitions, 10631 flow [2024-06-28 04:02:43,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:02:43,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:02:43,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 04:02:43,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 04:02:43,010 INFO L175 Difference]: Start difference. First operand has 310 places, 547 transitions, 8901 flow. Second operand 9 states and 168 transitions. [2024-06-28 04:02:43,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 595 transitions, 10631 flow [2024-06-28 04:02:43,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 595 transitions, 10436 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-28 04:02:43,897 INFO L231 Difference]: Finished difference. Result has 311 places, 556 transitions, 9280 flow [2024-06-28 04:02:43,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=8706, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9280, PETRI_PLACES=311, PETRI_TRANSITIONS=556} [2024-06-28 04:02:43,898 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 268 predicate places. [2024-06-28 04:02:43,898 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 556 transitions, 9280 flow [2024-06-28 04:02:43,898 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 04:02:43,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:43,898 INFO L208 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 04:02:43,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 04:02:43,898 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 04:02:43,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:43,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1460570979, now seen corresponding path program 1 times [2024-06-28 04:02:43,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:43,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229964600] [2024-06-28 04:02:43,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:43,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:43,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:47,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:02:47,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:47,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229964600] [2024-06-28 04:02:47,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229964600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:47,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:47,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:02:47,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539593901] [2024-06-28 04:02:47,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:47,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:02:47,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:47,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:02:47,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:02:47,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:02:47,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 556 transitions, 9280 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 04:02:47,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:47,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:02:47,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:49,633 INFO L124 PetriNetUnfolderBase]: 3924/6400 cut-off events. [2024-06-28 04:02:49,634 INFO L125 PetriNetUnfolderBase]: For 289617/289629 co-relation queries the response was YES. [2024-06-28 04:02:49,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45871 conditions, 6400 events. 3924/6400 cut-off events. For 289617/289629 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 42049 event pairs, 855 based on Foata normal form. 8/6396 useless extension candidates. Maximal degree in co-relation 45730. Up to 5527 conditions per place. [2024-06-28 04:02:49,711 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 408 selfloop transitions, 204 changer transitions 0/617 dead transitions. [2024-06-28 04:02:49,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 617 transitions, 11269 flow [2024-06-28 04:02:49,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 04:02:49,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 04:02:49,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 211 transitions. [2024-06-28 04:02:49,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38644688644688646 [2024-06-28 04:02:49,713 INFO L175 Difference]: Start difference. First operand has 311 places, 556 transitions, 9280 flow. Second operand 13 states and 211 transitions. [2024-06-28 04:02:49,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 617 transitions, 11269 flow [2024-06-28 04:02:50,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 617 transitions, 11038 flow, removed 43 selfloop flow, removed 4 redundant places. [2024-06-28 04:02:50,672 INFO L231 Difference]: Finished difference. Result has 322 places, 578 transitions, 9884 flow [2024-06-28 04:02:50,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9058, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9884, PETRI_PLACES=322, PETRI_TRANSITIONS=578} [2024-06-28 04:02:50,673 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 279 predicate places. [2024-06-28 04:02:50,673 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 578 transitions, 9884 flow [2024-06-28 04:02:50,673 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 04:02:50,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:50,673 INFO L208 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 04:02:50,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 04:02:50,673 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 04:02:50,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:50,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1460571165, now seen corresponding path program 2 times [2024-06-28 04:02:50,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:50,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925633497] [2024-06-28 04:02:50,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:50,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:50,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:02:53,995 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 04:02:53,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:02:53,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925633497] [2024-06-28 04:02:53,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925633497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:02:53,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:02:53,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:02:53,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298078989] [2024-06-28 04:02:53,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:02:53,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:02:53,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:02:53,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:02:53,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:02:54,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:02:54,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 578 transitions, 9884 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 04:02:54,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:02:54,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:02:54,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:02:56,357 INFO L124 PetriNetUnfolderBase]: 3944/6431 cut-off events. [2024-06-28 04:02:56,358 INFO L125 PetriNetUnfolderBase]: For 298681/298694 co-relation queries the response was YES. [2024-06-28 04:02:56,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47113 conditions, 6431 events. 3944/6431 cut-off events. For 298681/298694 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 42211 event pairs, 837 based on Foata normal form. 13/6441 useless extension candidates. Maximal degree in co-relation 46968. Up to 5695 conditions per place. [2024-06-28 04:02:56,444 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 428 selfloop transitions, 190 changer transitions 0/623 dead transitions. [2024-06-28 04:02:56,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 623 transitions, 11434 flow [2024-06-28 04:02:56,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:02:56,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:02:56,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 04:02:56,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41798941798941797 [2024-06-28 04:02:56,446 INFO L175 Difference]: Start difference. First operand has 322 places, 578 transitions, 9884 flow. Second operand 9 states and 158 transitions. [2024-06-28 04:02:56,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 623 transitions, 11434 flow [2024-06-28 04:02:57,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 623 transitions, 11028 flow, removed 55 selfloop flow, removed 6 redundant places. [2024-06-28 04:02:57,518 INFO L231 Difference]: Finished difference. Result has 325 places, 590 transitions, 10073 flow [2024-06-28 04:02:57,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9487, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10073, PETRI_PLACES=325, PETRI_TRANSITIONS=590} [2024-06-28 04:02:57,518 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 282 predicate places. [2024-06-28 04:02:57,518 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 590 transitions, 10073 flow [2024-06-28 04:02:57,518 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 04:02:57,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:02:57,519 INFO L208 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 04:02:57,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 04:02:57,519 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 04:02:57,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:02:57,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1061496853, now seen corresponding path program 2 times [2024-06-28 04:02:57,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:02:57,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933420916] [2024-06-28 04:02:57,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:02:57,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:02:57,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:02,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:03:02,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:02,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933420916] [2024-06-28 04:03:02,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933420916] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:02,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:02,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:03:02,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776831068] [2024-06-28 04:03:02,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:02,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:03:02,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:02,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:03:02,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:03:02,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:03:02,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 590 transitions, 10073 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 04:03:02,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:02,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:03:02,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:04,630 INFO L124 PetriNetUnfolderBase]: 4084/6644 cut-off events. [2024-06-28 04:03:04,631 INFO L125 PetriNetUnfolderBase]: For 334243/334256 co-relation queries the response was YES. [2024-06-28 04:03:04,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49883 conditions, 6644 events. 4084/6644 cut-off events. For 334243/334256 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 43694 event pairs, 830 based on Foata normal form. 16/6657 useless extension candidates. Maximal degree in co-relation 49736. Up to 5605 conditions per place. [2024-06-28 04:03:04,712 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 396 selfloop transitions, 273 changer transitions 0/674 dead transitions. [2024-06-28 04:03:04,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 674 transitions, 12799 flow [2024-06-28 04:03:04,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 04:03:04,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 04:03:04,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 213 transitions. [2024-06-28 04:03:04,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3901098901098901 [2024-06-28 04:03:04,714 INFO L175 Difference]: Start difference. First operand has 325 places, 590 transitions, 10073 flow. Second operand 13 states and 213 transitions. [2024-06-28 04:03:04,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 674 transitions, 12799 flow [2024-06-28 04:03:05,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 674 transitions, 12348 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 04:03:05,771 INFO L231 Difference]: Finished difference. Result has 332 places, 635 transitions, 11072 flow [2024-06-28 04:03:05,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=9670, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=11072, PETRI_PLACES=332, PETRI_TRANSITIONS=635} [2024-06-28 04:03:05,772 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 289 predicate places. [2024-06-28 04:03:05,772 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 635 transitions, 11072 flow [2024-06-28 04:03:05,772 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 04:03:05,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:05,773 INFO L208 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 04:03:05,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 04:03:05,773 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 04:03:05,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:05,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1457046865, now seen corresponding path program 3 times [2024-06-28 04:03:05,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:05,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227256909] [2024-06-28 04:03:05,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:05,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:05,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:09,325 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 04:03:09,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:09,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227256909] [2024-06-28 04:03:09,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227256909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:09,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:09,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:03:09,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557339274] [2024-06-28 04:03:09,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:09,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:03:09,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:09,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:03:09,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:03:09,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:03:09,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 635 transitions, 11072 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 04:03:09,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:09,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:03:09,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:11,888 INFO L124 PetriNetUnfolderBase]: 4097/6660 cut-off events. [2024-06-28 04:03:11,888 INFO L125 PetriNetUnfolderBase]: For 340901/340914 co-relation queries the response was YES. [2024-06-28 04:03:11,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50749 conditions, 6660 events. 4097/6660 cut-off events. For 340901/340914 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 43810 event pairs, 853 based on Foata normal form. 13/6670 useless extension candidates. Maximal degree in co-relation 50601. Up to 5868 conditions per place. [2024-06-28 04:03:11,965 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 446 selfloop transitions, 219 changer transitions 0/670 dead transitions. [2024-06-28 04:03:11,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 670 transitions, 12712 flow [2024-06-28 04:03:11,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:03:11,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:03:11,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-28 04:03:11,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3976190476190476 [2024-06-28 04:03:11,968 INFO L175 Difference]: Start difference. First operand has 332 places, 635 transitions, 11072 flow. Second operand 10 states and 167 transitions. [2024-06-28 04:03:11,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 670 transitions, 12712 flow [2024-06-28 04:03:12,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 670 transitions, 12404 flow, removed 105 selfloop flow, removed 4 redundant places. [2024-06-28 04:03:12,938 INFO L231 Difference]: Finished difference. Result has 339 places, 641 transitions, 11333 flow [2024-06-28 04:03:12,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10764, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11333, PETRI_PLACES=339, PETRI_TRANSITIONS=641} [2024-06-28 04:03:12,939 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 296 predicate places. [2024-06-28 04:03:12,939 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 641 transitions, 11333 flow [2024-06-28 04:03:12,939 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 04:03:12,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:12,939 INFO L208 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 04:03:12,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 04:03:12,939 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 04:03:12,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:12,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1861209615, now seen corresponding path program 3 times [2024-06-28 04:03:12,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:12,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745299017] [2024-06-28 04:03:12,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:12,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:12,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:16,063 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 04:03:16,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:16,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745299017] [2024-06-28 04:03:16,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745299017] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:16,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:16,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:03:16,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459153638] [2024-06-28 04:03:16,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:16,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:03:16,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:16,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:03:16,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:03:16,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:03:16,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 641 transitions, 11333 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 04:03:16,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:16,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:03:16,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:18,276 INFO L124 PetriNetUnfolderBase]: 4085/6650 cut-off events. [2024-06-28 04:03:18,277 INFO L125 PetriNetUnfolderBase]: For 343569/343582 co-relation queries the response was YES. [2024-06-28 04:03:18,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50427 conditions, 6650 events. 4085/6650 cut-off events. For 343569/343582 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 43769 event pairs, 830 based on Foata normal form. 16/6663 useless extension candidates. Maximal degree in co-relation 50276. Up to 5613 conditions per place. [2024-06-28 04:03:18,369 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 400 selfloop transitions, 271 changer transitions 0/676 dead transitions. [2024-06-28 04:03:18,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 676 transitions, 13047 flow [2024-06-28 04:03:18,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:03:18,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:03:18,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-28 04:03:18,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-28 04:03:18,371 INFO L175 Difference]: Start difference. First operand has 339 places, 641 transitions, 11333 flow. Second operand 11 states and 187 transitions. [2024-06-28 04:03:18,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 676 transitions, 13047 flow [2024-06-28 04:03:19,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 676 transitions, 12534 flow, removed 52 selfloop flow, removed 7 redundant places. [2024-06-28 04:03:19,706 INFO L231 Difference]: Finished difference. Result has 343 places, 641 transitions, 11372 flow [2024-06-28 04:03:19,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10820, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=641, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=271, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11372, PETRI_PLACES=343, PETRI_TRANSITIONS=641} [2024-06-28 04:03:19,707 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 300 predicate places. [2024-06-28 04:03:19,707 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 641 transitions, 11372 flow [2024-06-28 04:03:19,708 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 04:03:19,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:19,708 INFO L208 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 04:03:19,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 04:03:19,708 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 04:03:19,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:19,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1535327829, now seen corresponding path program 4 times [2024-06-28 04:03:19,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:19,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522250669] [2024-06-28 04:03:19,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:19,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:23,684 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 04:03:23,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:23,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522250669] [2024-06-28 04:03:23,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522250669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:23,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:23,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:03:23,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692228174] [2024-06-28 04:03:23,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:23,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:03:23,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:23,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:03:23,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:03:23,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:03:23,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 641 transitions, 11372 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 04:03:23,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:23,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:03:23,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:25,884 INFO L124 PetriNetUnfolderBase]: 4114/6698 cut-off events. [2024-06-28 04:03:25,885 INFO L125 PetriNetUnfolderBase]: For 354365/354373 co-relation queries the response was YES. [2024-06-28 04:03:25,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51165 conditions, 6698 events. 4114/6698 cut-off events. For 354365/354373 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 44172 event pairs, 973 based on Foata normal form. 9/6702 useless extension candidates. Maximal degree in co-relation 51013. Up to 5980 conditions per place. [2024-06-28 04:03:25,991 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 539 selfloop transitions, 146 changer transitions 0/690 dead transitions. [2024-06-28 04:03:25,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 690 transitions, 13348 flow [2024-06-28 04:03:25,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:03:25,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:03:25,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-28 04:03:25,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43386243386243384 [2024-06-28 04:03:25,993 INFO L175 Difference]: Start difference. First operand has 343 places, 641 transitions, 11372 flow. Second operand 9 states and 164 transitions. [2024-06-28 04:03:25,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 690 transitions, 13348 flow [2024-06-28 04:03:27,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 690 transitions, 12806 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 04:03:27,330 INFO L231 Difference]: Finished difference. Result has 343 places, 653 transitions, 11356 flow [2024-06-28 04:03:27,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=10830, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=641, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11356, PETRI_PLACES=343, PETRI_TRANSITIONS=653} [2024-06-28 04:03:27,331 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 300 predicate places. [2024-06-28 04:03:27,331 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 653 transitions, 11356 flow [2024-06-28 04:03:27,331 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 04:03:27,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:27,331 INFO L208 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 04:03:27,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 04:03:27,331 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 04:03:27,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:27,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1535447985, now seen corresponding path program 4 times [2024-06-28 04:03:27,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:27,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789814290] [2024-06-28 04:03:27,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:27,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:27,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:31,076 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 04:03:31,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:31,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789814290] [2024-06-28 04:03:31,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789814290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:31,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:31,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:03:31,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909490905] [2024-06-28 04:03:31,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:31,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:03:31,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:31,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:03:31,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:03:31,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:03:31,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 653 transitions, 11356 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 04:03:31,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:31,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:03:31,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:33,378 INFO L124 PetriNetUnfolderBase]: 4186/6802 cut-off events. [2024-06-28 04:03:33,378 INFO L125 PetriNetUnfolderBase]: For 378475/378486 co-relation queries the response was YES. [2024-06-28 04:03:33,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51957 conditions, 6802 events. 4186/6802 cut-off events. For 378475/378486 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 44825 event pairs, 958 based on Foata normal form. 14/6813 useless extension candidates. Maximal degree in co-relation 51803. Up to 6137 conditions per place. [2024-06-28 04:03:33,483 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 567 selfloop transitions, 136 changer transitions 0/708 dead transitions. [2024-06-28 04:03:33,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 708 transitions, 13308 flow [2024-06-28 04:03:33,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:03:33,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:03:33,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-28 04:03:33,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39826839826839827 [2024-06-28 04:03:33,485 INFO L175 Difference]: Start difference. First operand has 343 places, 653 transitions, 11356 flow. Second operand 11 states and 184 transitions. [2024-06-28 04:03:33,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 708 transitions, 13308 flow [2024-06-28 04:03:34,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 708 transitions, 13141 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-06-28 04:03:35,002 INFO L231 Difference]: Finished difference. Result has 351 places, 671 transitions, 11818 flow [2024-06-28 04:03:35,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=11189, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=653, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=523, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11818, PETRI_PLACES=351, PETRI_TRANSITIONS=671} [2024-06-28 04:03:35,003 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 308 predicate places. [2024-06-28 04:03:35,003 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 671 transitions, 11818 flow [2024-06-28 04:03:35,003 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 04:03:35,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:35,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:35,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 04:03:35,003 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 04:03:35,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:35,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1954327175, now seen corresponding path program 5 times [2024-06-28 04:03:35,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:35,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082074054] [2024-06-28 04:03:35,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:35,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:35,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:38,581 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 04:03:38,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:38,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082074054] [2024-06-28 04:03:38,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082074054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:38,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:38,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:03:38,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859913659] [2024-06-28 04:03:38,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:38,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:03:38,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:38,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:03:38,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:03:38,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:03:38,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 671 transitions, 11818 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 04:03:38,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:38,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:03:38,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:41,048 INFO L124 PetriNetUnfolderBase]: 4191/6815 cut-off events. [2024-06-28 04:03:41,048 INFO L125 PetriNetUnfolderBase]: For 380858/380866 co-relation queries the response was YES. [2024-06-28 04:03:41,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52639 conditions, 6815 events. 4191/6815 cut-off events. For 380858/380866 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 44939 event pairs, 981 based on Foata normal form. 9/6819 useless extension candidates. Maximal degree in co-relation 52482. Up to 6086 conditions per place. [2024-06-28 04:03:41,134 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 556 selfloop transitions, 159 changer transitions 0/720 dead transitions. [2024-06-28 04:03:41,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 720 transitions, 13746 flow [2024-06-28 04:03:41,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:03:41,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:03:41,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 196 transitions. [2024-06-28 04:03:41,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-28 04:03:41,136 INFO L175 Difference]: Start difference. First operand has 351 places, 671 transitions, 11818 flow. Second operand 11 states and 196 transitions. [2024-06-28 04:03:41,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 720 transitions, 13746 flow [2024-06-28 04:03:42,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 720 transitions, 13482 flow, removed 48 selfloop flow, removed 5 redundant places. [2024-06-28 04:03:42,792 INFO L231 Difference]: Finished difference. Result has 357 places, 674 transitions, 11928 flow [2024-06-28 04:03:42,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=11554, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=671, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11928, PETRI_PLACES=357, PETRI_TRANSITIONS=674} [2024-06-28 04:03:42,792 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 314 predicate places. [2024-06-28 04:03:42,792 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 674 transitions, 11928 flow [2024-06-28 04:03:42,793 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 04:03:42,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:42,793 INFO L208 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 04:03:42,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 04:03:42,793 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 04:03:42,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:42,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1535447799, now seen corresponding path program 6 times [2024-06-28 04:03:42,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:42,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991507603] [2024-06-28 04:03:42,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:42,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:42,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:46,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:03:46,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:46,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991507603] [2024-06-28 04:03:46,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991507603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:46,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:46,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:03:46,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945403557] [2024-06-28 04:03:46,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:46,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:03:46,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:46,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:03:46,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:03:46,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:03:46,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 674 transitions, 11928 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 04:03:46,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:46,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:03:46,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:48,448 INFO L124 PetriNetUnfolderBase]: 4188/6813 cut-off events. [2024-06-28 04:03:48,448 INFO L125 PetriNetUnfolderBase]: For 386837/386848 co-relation queries the response was YES. [2024-06-28 04:03:48,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52624 conditions, 6813 events. 4188/6813 cut-off events. For 386837/386848 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 44957 event pairs, 974 based on Foata normal form. 11/6821 useless extension candidates. Maximal degree in co-relation 52466. Up to 6251 conditions per place. [2024-06-28 04:03:48,563 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 593 selfloop transitions, 106 changer transitions 0/704 dead transitions. [2024-06-28 04:03:48,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 704 transitions, 13434 flow [2024-06-28 04:03:48,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:03:48,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:03:48,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 04:03:48,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-28 04:03:48,565 INFO L175 Difference]: Start difference. First operand has 357 places, 674 transitions, 11928 flow. Second operand 9 states and 153 transitions. [2024-06-28 04:03:48,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 704 transitions, 13434 flow [2024-06-28 04:03:50,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 704 transitions, 13034 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-28 04:03:50,205 INFO L231 Difference]: Finished difference. Result has 357 places, 674 transitions, 11750 flow [2024-06-28 04:03:50,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=11528, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=568, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11750, PETRI_PLACES=357, PETRI_TRANSITIONS=674} [2024-06-28 04:03:50,206 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 314 predicate places. [2024-06-28 04:03:50,206 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 674 transitions, 11750 flow [2024-06-28 04:03:50,206 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 04:03:50,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:50,206 INFO L208 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 04:03:50,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 04:03:50,206 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 04:03:50,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:50,207 INFO L85 PathProgramCache]: Analyzing trace with hash 2118996417, now seen corresponding path program 1 times [2024-06-28 04:03:50,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:50,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955039231] [2024-06-28 04:03:50,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:50,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:50,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:03:53,420 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 04:03:53,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:03:53,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955039231] [2024-06-28 04:03:53,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955039231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:03:53,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:03:53,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:03:53,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458977734] [2024-06-28 04:03:53,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:03:53,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:03:53,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:03:53,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:03:53,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:03:53,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:03:53,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 674 transitions, 11750 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 04:03:53,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:03:53,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:03:53,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:03:55,973 INFO L124 PetriNetUnfolderBase]: 4230/6857 cut-off events. [2024-06-28 04:03:55,974 INFO L125 PetriNetUnfolderBase]: For 408520/408528 co-relation queries the response was YES. [2024-06-28 04:03:56,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53274 conditions, 6857 events. 4230/6857 cut-off events. For 408520/408528 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 45047 event pairs, 979 based on Foata normal form. 10/6862 useless extension candidates. Maximal degree in co-relation 53115. Up to 6153 conditions per place. [2024-06-28 04:03:56,078 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 579 selfloop transitions, 137 changer transitions 0/721 dead transitions. [2024-06-28 04:03:56,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 721 transitions, 13760 flow [2024-06-28 04:03:56,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 04:03:56,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 04:03:56,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 199 transitions. [2024-06-28 04:03:56,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3948412698412698 [2024-06-28 04:03:56,080 INFO L175 Difference]: Start difference. First operand has 357 places, 674 transitions, 11750 flow. Second operand 12 states and 199 transitions. [2024-06-28 04:03:56,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 721 transitions, 13760 flow [2024-06-28 04:03:57,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 721 transitions, 13522 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 04:03:57,743 INFO L231 Difference]: Finished difference. Result has 362 places, 683 transitions, 11966 flow [2024-06-28 04:03:57,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=11512, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=543, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11966, PETRI_PLACES=362, PETRI_TRANSITIONS=683} [2024-06-28 04:03:57,743 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 319 predicate places. [2024-06-28 04:03:57,743 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 683 transitions, 11966 flow [2024-06-28 04:03:57,744 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 04:03:57,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:03:57,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:03:57,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 04:03:57,744 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 04:03:57,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:03:57,744 INFO L85 PathProgramCache]: Analyzing trace with hash 2118996045, now seen corresponding path program 7 times [2024-06-28 04:03:57,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:03:57,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711524549] [2024-06-28 04:03:57,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:03:57,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:03:57,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:01,183 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 04:04:01,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:01,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711524549] [2024-06-28 04:04:01,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711524549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:01,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:01,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:04:01,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809281273] [2024-06-28 04:04:01,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:01,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:04:01,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:01,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:04:01,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:04:01,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:04:01,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 683 transitions, 11966 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 04:04:01,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:01,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:04:01,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:03,817 INFO L124 PetriNetUnfolderBase]: 4235/6874 cut-off events. [2024-06-28 04:04:03,817 INFO L125 PetriNetUnfolderBase]: For 416900/416908 co-relation queries the response was YES. [2024-06-28 04:04:03,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53865 conditions, 6874 events. 4235/6874 cut-off events. For 416900/416908 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 45238 event pairs, 984 based on Foata normal form. 9/6878 useless extension candidates. Maximal degree in co-relation 53705. Up to 6147 conditions per place. [2024-06-28 04:04:03,923 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 559 selfloop transitions, 164 changer transitions 0/728 dead transitions. [2024-06-28 04:04:03,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 728 transitions, 13750 flow [2024-06-28 04:04:03,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 04:04:03,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 04:04:03,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 202 transitions. [2024-06-28 04:04:03,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4007936507936508 [2024-06-28 04:04:03,924 INFO L175 Difference]: Start difference. First operand has 362 places, 683 transitions, 11966 flow. Second operand 12 states and 202 transitions. [2024-06-28 04:04:03,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 728 transitions, 13750 flow [2024-06-28 04:04:05,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 728 transitions, 13504 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-06-28 04:04:05,906 INFO L231 Difference]: Finished difference. Result has 367 places, 686 transitions, 12096 flow [2024-06-28 04:04:05,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=11720, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=683, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12096, PETRI_PLACES=367, PETRI_TRANSITIONS=686} [2024-06-28 04:04:05,907 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 324 predicate places. [2024-06-28 04:04:05,908 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 686 transitions, 12096 flow [2024-06-28 04:04:05,908 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 04:04:05,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:05,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:05,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 04:04:05,908 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 04:04:05,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:05,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1950315155, now seen corresponding path program 8 times [2024-06-28 04:04:05,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:05,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008588921] [2024-06-28 04:04:05,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:05,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:09,808 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 04:04:09,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:09,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008588921] [2024-06-28 04:04:09,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008588921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:09,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:09,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:04:09,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644431834] [2024-06-28 04:04:09,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:09,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:04:09,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:09,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:04:09,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:04:09,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:04:09,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 686 transitions, 12096 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 04:04:09,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:09,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:04:09,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:12,660 INFO L124 PetriNetUnfolderBase]: 4263/6937 cut-off events. [2024-06-28 04:04:12,661 INFO L125 PetriNetUnfolderBase]: For 429342/429353 co-relation queries the response was YES. [2024-06-28 04:04:12,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54685 conditions, 6937 events. 4263/6937 cut-off events. For 429342/429353 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 45897 event pairs, 979 based on Foata normal form. 11/6945 useless extension candidates. Maximal degree in co-relation 54523. Up to 6334 conditions per place. [2024-06-28 04:04:12,779 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 606 selfloop transitions, 125 changer transitions 0/736 dead transitions. [2024-06-28 04:04:12,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 736 transitions, 14160 flow [2024-06-28 04:04:12,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 04:04:12,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 04:04:12,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 203 transitions. [2024-06-28 04:04:12,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3717948717948718 [2024-06-28 04:04:12,789 INFO L175 Difference]: Start difference. First operand has 367 places, 686 transitions, 12096 flow. Second operand 13 states and 203 transitions. [2024-06-28 04:04:12,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 736 transitions, 14160 flow [2024-06-28 04:04:14,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 736 transitions, 13823 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 04:04:14,517 INFO L231 Difference]: Finished difference. Result has 372 places, 701 transitions, 12367 flow [2024-06-28 04:04:14,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=11780, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=686, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=570, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12367, PETRI_PLACES=372, PETRI_TRANSITIONS=701} [2024-06-28 04:04:14,518 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 329 predicate places. [2024-06-28 04:04:14,518 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 701 transitions, 12367 flow [2024-06-28 04:04:14,518 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 04:04:14,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:14,518 INFO L208 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 04:04:14,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 04:04:14,519 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 04:04:14,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:14,519 INFO L85 PathProgramCache]: Analyzing trace with hash 2122721067, now seen corresponding path program 2 times [2024-06-28 04:04:14,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:14,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189230614] [2024-06-28 04:04:14,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:14,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:14,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:17,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:04:17,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:17,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189230614] [2024-06-28 04:04:17,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189230614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:17,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:17,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:04:17,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319896341] [2024-06-28 04:04:17,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:17,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:04:17,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:17,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:04:17,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:04:17,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:04:17,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 701 transitions, 12367 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 04:04:17,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:17,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:04:17,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:20,592 INFO L124 PetriNetUnfolderBase]: 4309/6983 cut-off events. [2024-06-28 04:04:20,592 INFO L125 PetriNetUnfolderBase]: For 447957/447968 co-relation queries the response was YES. [2024-06-28 04:04:20,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55264 conditions, 6983 events. 4309/6983 cut-off events. For 447957/447968 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 45967 event pairs, 972 based on Foata normal form. 12/6992 useless extension candidates. Maximal degree in co-relation 55100. Up to 6389 conditions per place. [2024-06-28 04:04:20,708 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 635 selfloop transitions, 108 changer transitions 0/748 dead transitions. [2024-06-28 04:04:20,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 748 transitions, 14256 flow [2024-06-28 04:04:20,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 04:04:20,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 04:04:20,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 203 transitions. [2024-06-28 04:04:20,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3717948717948718 [2024-06-28 04:04:20,710 INFO L175 Difference]: Start difference. First operand has 372 places, 701 transitions, 12367 flow. Second operand 13 states and 203 transitions. [2024-06-28 04:04:20,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 748 transitions, 14256 flow [2024-06-28 04:04:22,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 748 transitions, 13970 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-28 04:04:22,502 INFO L231 Difference]: Finished difference. Result has 376 places, 713 transitions, 12457 flow [2024-06-28 04:04:22,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=12081, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=701, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=602, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12457, PETRI_PLACES=376, PETRI_TRANSITIONS=713} [2024-06-28 04:04:22,503 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 333 predicate places. [2024-06-28 04:04:22,503 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 713 transitions, 12457 flow [2024-06-28 04:04:22,503 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 04:04:22,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:22,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:22,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 04:04:22,503 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 04:04:22,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:22,504 INFO L85 PathProgramCache]: Analyzing trace with hash 2122715487, now seen corresponding path program 3 times [2024-06-28 04:04:22,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:22,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827553983] [2024-06-28 04:04:22,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:22,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:22,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:25,927 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 04:04:25,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:25,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827553983] [2024-06-28 04:04:25,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827553983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:25,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:25,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:04:25,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845362542] [2024-06-28 04:04:25,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:25,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:04:25,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:25,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:04:25,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:04:25,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:04:25,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 713 transitions, 12457 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 04:04:25,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:25,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:04:25,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:28,712 INFO L124 PetriNetUnfolderBase]: 4303/6977 cut-off events. [2024-06-28 04:04:28,713 INFO L125 PetriNetUnfolderBase]: For 451270/451281 co-relation queries the response was YES. [2024-06-28 04:04:28,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55159 conditions, 6977 events. 4303/6977 cut-off events. For 451270/451281 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 45899 event pairs, 971 based on Foata normal form. 12/6986 useless extension candidates. Maximal degree in co-relation 54994. Up to 6384 conditions per place. [2024-06-28 04:04:28,819 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 633 selfloop transitions, 108 changer transitions 0/746 dead transitions. [2024-06-28 04:04:28,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 746 transitions, 14039 flow [2024-06-28 04:04:28,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 04:04:28,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 04:04:28,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 191 transitions. [2024-06-28 04:04:28,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37896825396825395 [2024-06-28 04:04:28,821 INFO L175 Difference]: Start difference. First operand has 376 places, 713 transitions, 12457 flow. Second operand 12 states and 191 transitions. [2024-06-28 04:04:28,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 746 transitions, 14039 flow [2024-06-28 04:04:30,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 746 transitions, 13861 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-28 04:04:30,886 INFO L231 Difference]: Finished difference. Result has 380 places, 713 transitions, 12501 flow [2024-06-28 04:04:30,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=12279, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=713, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=605, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12501, PETRI_PLACES=380, PETRI_TRANSITIONS=713} [2024-06-28 04:04:30,886 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 337 predicate places. [2024-06-28 04:04:30,886 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 713 transitions, 12501 flow [2024-06-28 04:04:30,887 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 04:04:30,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:30,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:30,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 04:04:30,887 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 04:04:30,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:30,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1175438381, now seen corresponding path program 5 times [2024-06-28 04:04:30,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:30,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467916372] [2024-06-28 04:04:30,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:30,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:30,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:34,064 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 04:04:34,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:34,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467916372] [2024-06-28 04:04:34,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467916372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:34,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:34,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:04:34,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728690207] [2024-06-28 04:04:34,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:34,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:04:34,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:34,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:04:34,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:04:34,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:04:34,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 713 transitions, 12501 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 04:04:34,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:34,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:04:34,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:37,021 INFO L124 PetriNetUnfolderBase]: 4355/7059 cut-off events. [2024-06-28 04:04:37,021 INFO L125 PetriNetUnfolderBase]: For 480162/480173 co-relation queries the response was YES. [2024-06-28 04:04:37,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56347 conditions, 7059 events. 4355/7059 cut-off events. For 480162/480173 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 46543 event pairs, 964 based on Foata normal form. 14/7070 useless extension candidates. Maximal degree in co-relation 56180. Up to 6325 conditions per place. [2024-06-28 04:04:37,138 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 599 selfloop transitions, 164 changer transitions 0/768 dead transitions. [2024-06-28 04:04:37,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 768 transitions, 14689 flow [2024-06-28 04:04:37,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 04:04:37,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 04:04:37,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 223 transitions. [2024-06-28 04:04:37,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3792517006802721 [2024-06-28 04:04:37,140 INFO L175 Difference]: Start difference. First operand has 380 places, 713 transitions, 12501 flow. Second operand 14 states and 223 transitions. [2024-06-28 04:04:37,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 768 transitions, 14689 flow [2024-06-28 04:04:39,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 768 transitions, 14473 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-28 04:04:39,093 INFO L231 Difference]: Finished difference. Result has 383 places, 725 transitions, 12839 flow [2024-06-28 04:04:39,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=12285, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=713, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=561, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=12839, PETRI_PLACES=383, PETRI_TRANSITIONS=725} [2024-06-28 04:04:39,094 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 340 predicate places. [2024-06-28 04:04:39,094 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 725 transitions, 12839 flow [2024-06-28 04:04:39,094 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 04:04:39,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:39,094 INFO L208 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 04:04:39,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 04:04:39,094 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 04:04:39,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:39,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1544707809, now seen corresponding path program 9 times [2024-06-28 04:04:39,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:39,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944810229] [2024-06-28 04:04:39,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:39,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:39,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:43,110 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 04:04:43,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:43,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944810229] [2024-06-28 04:04:43,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944810229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:43,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:43,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:04:43,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441418895] [2024-06-28 04:04:43,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:43,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:04:43,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:43,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:04:43,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:04:43,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:04:43,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 725 transitions, 12839 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 04:04:43,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:43,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:04:43,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:45,751 INFO L124 PetriNetUnfolderBase]: 4352/7069 cut-off events. [2024-06-28 04:04:45,752 INFO L125 PetriNetUnfolderBase]: For 478536/478547 co-relation queries the response was YES. [2024-06-28 04:04:45,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56596 conditions, 7069 events. 4352/7069 cut-off events. For 478536/478547 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 46725 event pairs, 987 based on Foata normal form. 11/7077 useless extension candidates. Maximal degree in co-relation 56428. Up to 6459 conditions per place. [2024-06-28 04:04:45,865 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 627 selfloop transitions, 125 changer transitions 0/757 dead transitions. [2024-06-28 04:04:45,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 757 transitions, 14455 flow [2024-06-28 04:04:45,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:04:45,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:04:45,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-28 04:04:45,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3852813852813853 [2024-06-28 04:04:45,866 INFO L175 Difference]: Start difference. First operand has 383 places, 725 transitions, 12839 flow. Second operand 11 states and 178 transitions. [2024-06-28 04:04:45,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 757 transitions, 14455 flow [2024-06-28 04:04:48,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 757 transitions, 14108 flow, removed 40 selfloop flow, removed 10 redundant places. [2024-06-28 04:04:48,584 INFO L231 Difference]: Finished difference. Result has 384 places, 725 transitions, 12748 flow [2024-06-28 04:04:48,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=12492, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=725, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=600, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12748, PETRI_PLACES=384, PETRI_TRANSITIONS=725} [2024-06-28 04:04:48,586 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 341 predicate places. [2024-06-28 04:04:48,586 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 725 transitions, 12748 flow [2024-06-28 04:04:48,586 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 04:04:48,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:48,586 INFO L208 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 04:04:48,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 04:04:48,586 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 04:04:48,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:48,587 INFO L85 PathProgramCache]: Analyzing trace with hash 2122709721, now seen corresponding path program 6 times [2024-06-28 04:04:48,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:48,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109066213] [2024-06-28 04:04:48,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:48,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:48,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:04:51,962 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 04:04:51,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:04:51,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109066213] [2024-06-28 04:04:51,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109066213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:04:51,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:04:51,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:04:51,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460282145] [2024-06-28 04:04:51,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:04:51,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:04:51,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:04:51,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:04:51,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:04:51,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:04:51,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 725 transitions, 12748 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 04:04:51,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:04:51,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:04:51,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:04:54,991 INFO L124 PetriNetUnfolderBase]: 4340/7045 cut-off events. [2024-06-28 04:04:54,991 INFO L125 PetriNetUnfolderBase]: For 485339/485350 co-relation queries the response was YES. [2024-06-28 04:04:55,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56048 conditions, 7045 events. 4340/7045 cut-off events. For 485339/485350 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 46477 event pairs, 963 based on Foata normal form. 14/7056 useless extension candidates. Maximal degree in co-relation 55879. Up to 6311 conditions per place. [2024-06-28 04:04:55,112 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 604 selfloop transitions, 159 changer transitions 0/768 dead transitions. [2024-06-28 04:04:55,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 768 transitions, 14568 flow [2024-06-28 04:04:55,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 04:04:55,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 04:04:55,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 225 transitions. [2024-06-28 04:04:55,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3826530612244898 [2024-06-28 04:04:55,114 INFO L175 Difference]: Start difference. First operand has 384 places, 725 transitions, 12748 flow. Second operand 14 states and 225 transitions. [2024-06-28 04:04:55,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 768 transitions, 14568 flow [2024-06-28 04:04:57,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 768 transitions, 14258 flow, removed 30 selfloop flow, removed 10 redundant places. [2024-06-28 04:04:57,237 INFO L231 Difference]: Finished difference. Result has 388 places, 725 transitions, 12767 flow [2024-06-28 04:04:57,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=12438, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=725, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=566, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=12767, PETRI_PLACES=388, PETRI_TRANSITIONS=725} [2024-06-28 04:04:57,238 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 345 predicate places. [2024-06-28 04:04:57,238 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 725 transitions, 12767 flow [2024-06-28 04:04:57,238 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 04:04:57,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:04:57,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:04:57,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 04:04:57,238 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 04:04:57,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:04:57,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1546912217, now seen corresponding path program 7 times [2024-06-28 04:04:57,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:04:57,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398630973] [2024-06-28 04:04:57,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:04:57,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:04:57,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:00,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:05:00,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:00,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398630973] [2024-06-28 04:05:00,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398630973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:00,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:00,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:05:00,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623475843] [2024-06-28 04:05:00,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:00,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:05:00,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:00,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:05:00,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:05:00,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:05:00,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 725 transitions, 12767 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 04:05:00,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:00,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:05:00,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:02,727 INFO L124 PetriNetUnfolderBase]: 4471/7222 cut-off events. [2024-06-28 04:05:02,727 INFO L125 PetriNetUnfolderBase]: For 537823/537826 co-relation queries the response was YES. [2024-06-28 04:05:02,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58754 conditions, 7222 events. 4471/7222 cut-off events. For 537823/537826 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 47556 event pairs, 872 based on Foata normal form. 6/7225 useless extension candidates. Maximal degree in co-relation 58584. Up to 6011 conditions per place. [2024-06-28 04:05:02,841 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 455 selfloop transitions, 326 changer transitions 0/786 dead transitions. [2024-06-28 04:05:02,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 786 transitions, 15553 flow [2024-06-28 04:05:02,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:05:02,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:05:02,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-28 04:05:02,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-28 04:05:02,844 INFO L175 Difference]: Start difference. First operand has 388 places, 725 transitions, 12767 flow. Second operand 10 states and 170 transitions. [2024-06-28 04:05:02,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 786 transitions, 15553 flow [2024-06-28 04:05:05,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 786 transitions, 15135 flow, removed 0 selfloop flow, removed 14 redundant places. [2024-06-28 04:05:05,129 INFO L231 Difference]: Finished difference. Result has 384 places, 758 transitions, 13673 flow [2024-06-28 04:05:05,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=12382, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=725, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=293, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13673, PETRI_PLACES=384, PETRI_TRANSITIONS=758} [2024-06-28 04:05:05,129 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 341 predicate places. [2024-06-28 04:05:05,130 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 758 transitions, 13673 flow [2024-06-28 04:05:05,130 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 04:05:05,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:05,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:05:05,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 04:05:05,130 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 04:05:05,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:05,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1554149663, now seen corresponding path program 10 times [2024-06-28 04:05:05,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:05,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841648245] [2024-06-28 04:05:05,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:05,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:05,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:08,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:05:08,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:08,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841648245] [2024-06-28 04:05:08,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841648245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:08,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:08,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:05:08,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149011466] [2024-06-28 04:05:08,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:08,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:05:08,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:08,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:05:08,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:05:08,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:05:08,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 758 transitions, 13673 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 04:05:08,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:08,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:05:08,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:11,643 INFO L124 PetriNetUnfolderBase]: 4484/7266 cut-off events. [2024-06-28 04:05:11,643 INFO L125 PetriNetUnfolderBase]: For 544960/544973 co-relation queries the response was YES. [2024-06-28 04:05:11,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59595 conditions, 7266 events. 4484/7266 cut-off events. For 544960/544973 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 48093 event pairs, 1013 based on Foata normal form. 13/7276 useless extension candidates. Maximal degree in co-relation 59424. Up to 6701 conditions per place. [2024-06-28 04:05:11,743 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 691 selfloop transitions, 92 changer transitions 0/788 dead transitions. [2024-06-28 04:05:11,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 788 transitions, 15582 flow [2024-06-28 04:05:11,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 04:05:11,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 04:05:11,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 181 transitions. [2024-06-28 04:05:11,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35912698412698413 [2024-06-28 04:05:11,745 INFO L175 Difference]: Start difference. First operand has 384 places, 758 transitions, 13673 flow. Second operand 12 states and 181 transitions. [2024-06-28 04:05:11,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 788 transitions, 15582 flow [2024-06-28 04:05:14,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 788 transitions, 15224 flow, removed 51 selfloop flow, removed 3 redundant places. [2024-06-28 04:05:14,348 INFO L231 Difference]: Finished difference. Result has 394 places, 764 transitions, 13634 flow [2024-06-28 04:05:14,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=13315, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=758, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=666, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=13634, PETRI_PLACES=394, PETRI_TRANSITIONS=764} [2024-06-28 04:05:14,349 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 351 predicate places. [2024-06-28 04:05:14,349 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 764 transitions, 13634 flow [2024-06-28 04:05:14,349 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 04:05:14,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:14,349 INFO L208 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 04:05:14,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 04:05:14,350 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 04:05:14,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:14,350 INFO L85 PathProgramCache]: Analyzing trace with hash -968784755, now seen corresponding path program 4 times [2024-06-28 04:05:14,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:14,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700818815] [2024-06-28 04:05:14,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:14,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:14,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:17,654 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 04:05:17,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:17,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700818815] [2024-06-28 04:05:17,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700818815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:17,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:17,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:05:17,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966125252] [2024-06-28 04:05:17,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:17,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:05:17,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:17,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:05:17,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:05:17,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:05:17,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 764 transitions, 13634 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 04:05:17,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:17,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:05:17,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:20,378 INFO L124 PetriNetUnfolderBase]: 4546/7346 cut-off events. [2024-06-28 04:05:20,378 INFO L125 PetriNetUnfolderBase]: For 575607/575620 co-relation queries the response was YES. [2024-06-28 04:05:20,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59962 conditions, 7346 events. 4546/7346 cut-off events. For 575607/575620 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 48559 event pairs, 987 based on Foata normal form. 14/7357 useless extension candidates. Maximal degree in co-relation 59789. Up to 6659 conditions per place. [2024-06-28 04:05:20,487 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 678 selfloop transitions, 125 changer transitions 0/808 dead transitions. [2024-06-28 04:05:20,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 808 transitions, 15701 flow [2024-06-28 04:05:20,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 04:05:20,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 04:05:20,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 188 transitions. [2024-06-28 04:05:20,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.373015873015873 [2024-06-28 04:05:20,489 INFO L175 Difference]: Start difference. First operand has 394 places, 764 transitions, 13634 flow. Second operand 12 states and 188 transitions. [2024-06-28 04:05:20,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 808 transitions, 15701 flow [2024-06-28 04:05:23,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 808 transitions, 15495 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-28 04:05:23,175 INFO L231 Difference]: Finished difference. Result has 399 places, 779 transitions, 13934 flow [2024-06-28 04:05:23,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=13428, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=764, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=648, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=13934, PETRI_PLACES=399, PETRI_TRANSITIONS=779} [2024-06-28 04:05:23,176 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 356 predicate places. [2024-06-28 04:05:23,176 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 779 transitions, 13934 flow [2024-06-28 04:05:23,192 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 04:05:23,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:23,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:05:23,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 04:05:23,192 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 04:05:23,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:23,193 INFO L85 PathProgramCache]: Analyzing trace with hash -308882389, now seen corresponding path program 5 times [2024-06-28 04:05:23,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:23,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471591795] [2024-06-28 04:05:23,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:23,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:23,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:26,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:05:26,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:26,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471591795] [2024-06-28 04:05:26,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471591795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:26,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:26,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:05:26,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493650015] [2024-06-28 04:05:26,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:26,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:05:26,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:26,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:05:26,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:05:26,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:05:26,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 779 transitions, 13934 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 04:05:26,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:26,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:05:26,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:29,963 INFO L124 PetriNetUnfolderBase]: 4556/7358 cut-off events. [2024-06-28 04:05:29,964 INFO L125 PetriNetUnfolderBase]: For 587464/587477 co-relation queries the response was YES. [2024-06-28 04:05:30,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60400 conditions, 7358 events. 4556/7358 cut-off events. For 587464/587477 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 48644 event pairs, 988 based on Foata normal form. 14/7369 useless extension candidates. Maximal degree in co-relation 60225. Up to 6669 conditions per place. [2024-06-28 04:05:30,082 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 685 selfloop transitions, 128 changer transitions 0/818 dead transitions. [2024-06-28 04:05:30,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 818 transitions, 16037 flow [2024-06-28 04:05:30,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-28 04:05:30,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-28 04:05:30,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 230 transitions. [2024-06-28 04:05:30,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36507936507936506 [2024-06-28 04:05:30,085 INFO L175 Difference]: Start difference. First operand has 399 places, 779 transitions, 13934 flow. Second operand 15 states and 230 transitions. [2024-06-28 04:05:30,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 818 transitions, 16037 flow [2024-06-28 04:05:32,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 818 transitions, 15854 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-28 04:05:32,868 INFO L231 Difference]: Finished difference. Result has 407 places, 782 transitions, 14063 flow [2024-06-28 04:05:32,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=13751, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=779, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=654, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=14063, PETRI_PLACES=407, PETRI_TRANSITIONS=782} [2024-06-28 04:05:32,869 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 364 predicate places. [2024-06-28 04:05:32,869 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 782 transitions, 14063 flow [2024-06-28 04:05:32,869 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 04:05:32,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:32,869 INFO L208 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 04:05:32,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 04:05:32,869 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 04:05:32,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:32,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1554143897, now seen corresponding path program 8 times [2024-06-28 04:05:32,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:32,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752699385] [2024-06-28 04:05:32,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:32,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:32,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:36,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:05:36,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:36,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752699385] [2024-06-28 04:05:36,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752699385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:36,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:36,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:05:36,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621267646] [2024-06-28 04:05:36,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:36,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:05:36,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:36,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:05:36,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:05:36,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:05:36,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 782 transitions, 14063 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 04:05:36,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:36,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:05:36,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:39,291 INFO L124 PetriNetUnfolderBase]: 4576/7390 cut-off events. [2024-06-28 04:05:39,291 INFO L125 PetriNetUnfolderBase]: For 606845/606858 co-relation queries the response was YES. [2024-06-28 04:05:39,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61020 conditions, 7390 events. 4576/7390 cut-off events. For 606845/606858 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 48850 event pairs, 985 based on Foata normal form. 16/7403 useless extension candidates. Maximal degree in co-relation 60843. Up to 6713 conditions per place. [2024-06-28 04:05:39,397 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 687 selfloop transitions, 130 changer transitions 0/822 dead transitions. [2024-06-28 04:05:39,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 822 transitions, 16239 flow [2024-06-28 04:05:39,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 04:05:39,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 04:05:39,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 216 transitions. [2024-06-28 04:05:39,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3673469387755102 [2024-06-28 04:05:39,401 INFO L175 Difference]: Start difference. First operand has 407 places, 782 transitions, 14063 flow. Second operand 14 states and 216 transitions. [2024-06-28 04:05:39,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 822 transitions, 16239 flow [2024-06-28 04:05:41,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 822 transitions, 15930 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-28 04:05:41,829 INFO L231 Difference]: Finished difference. Result has 411 places, 788 transitions, 14138 flow [2024-06-28 04:05:41,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=13754, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=782, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=658, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=14138, PETRI_PLACES=411, PETRI_TRANSITIONS=788} [2024-06-28 04:05:41,830 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 368 predicate places. [2024-06-28 04:05:41,830 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 788 transitions, 14138 flow [2024-06-28 04:05:41,830 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 04:05:41,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:41,830 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 04:05:41,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 04:05:41,831 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 04:05:41,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:41,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1554155057, now seen corresponding path program 9 times [2024-06-28 04:05:41,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:41,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676301654] [2024-06-28 04:05:41,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:41,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:41,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:45,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:05:45,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:45,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676301654] [2024-06-28 04:05:45,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676301654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:45,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:45,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:05:45,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717647132] [2024-06-28 04:05:45,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:45,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:05:45,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:45,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:05:45,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:05:45,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:05:45,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 788 transitions, 14138 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 04:05:45,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:45,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:05:45,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:48,319 INFO L124 PetriNetUnfolderBase]: 4564/7372 cut-off events. [2024-06-28 04:05:48,319 INFO L125 PetriNetUnfolderBase]: For 605086/605099 co-relation queries the response was YES. [2024-06-28 04:05:48,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60459 conditions, 7372 events. 4564/7372 cut-off events. For 605086/605099 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 48714 event pairs, 987 based on Foata normal form. 16/7385 useless extension candidates. Maximal degree in co-relation 60282. Up to 6703 conditions per place. [2024-06-28 04:05:48,418 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 682 selfloop transitions, 130 changer transitions 0/817 dead transitions. [2024-06-28 04:05:48,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 817 transitions, 16012 flow [2024-06-28 04:05:48,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 04:05:48,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 04:05:48,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 189 transitions. [2024-06-28 04:05:48,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 04:05:48,420 INFO L175 Difference]: Start difference. First operand has 411 places, 788 transitions, 14138 flow. Second operand 12 states and 189 transitions. [2024-06-28 04:05:48,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 817 transitions, 16012 flow [2024-06-28 04:05:51,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 817 transitions, 15669 flow, removed 60 selfloop flow, removed 10 redundant places. [2024-06-28 04:05:51,039 INFO L231 Difference]: Finished difference. Result has 413 places, 788 transitions, 14066 flow [2024-06-28 04:05:51,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=13795, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=788, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=658, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14066, PETRI_PLACES=413, PETRI_TRANSITIONS=788} [2024-06-28 04:05:51,040 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 370 predicate places. [2024-06-28 04:05:51,040 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 788 transitions, 14066 flow [2024-06-28 04:05:51,040 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 04:05:51,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:05:51,040 INFO L208 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 04:05:51,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 04:05:51,041 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 04:05:51,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:05:51,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1557874313, now seen corresponding path program 11 times [2024-06-28 04:05:51,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:05:51,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216368394] [2024-06-28 04:05:51,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:05:51,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:05:51,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:05:55,810 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 04:05:55,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:05:55,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216368394] [2024-06-28 04:05:55,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216368394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:05:55,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:05:55,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:05:55,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947449376] [2024-06-28 04:05:55,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:05:55,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:05:55,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:05:55,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:05:55,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:05:55,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:05:55,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 788 transitions, 14066 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 04:05:55,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:05:55,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:05:55,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:05:58,660 INFO L124 PetriNetUnfolderBase]: 4577/7406 cut-off events. [2024-06-28 04:05:58,660 INFO L125 PetriNetUnfolderBase]: For 606401/606404 co-relation queries the response was YES. [2024-06-28 04:05:58,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60687 conditions, 7406 events. 4577/7406 cut-off events. For 606401/606404 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 49041 event pairs, 919 based on Foata normal form. 3/7406 useless extension candidates. Maximal degree in co-relation 60509. Up to 6474 conditions per place. [2024-06-28 04:05:58,783 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 555 selfloop transitions, 258 changer transitions 0/818 dead transitions. [2024-06-28 04:05:58,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 818 transitions, 16214 flow [2024-06-28 04:05:58,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:05:58,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:05:58,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-06-28 04:05:58,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37662337662337664 [2024-06-28 04:05:58,786 INFO L175 Difference]: Start difference. First operand has 413 places, 788 transitions, 14066 flow. Second operand 11 states and 174 transitions. [2024-06-28 04:05:58,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 818 transitions, 16214 flow [2024-06-28 04:06:01,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 818 transitions, 15928 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-06-28 04:06:01,670 INFO L231 Difference]: Finished difference. Result has 413 places, 794 transitions, 14448 flow [2024-06-28 04:06:01,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=13780, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=788, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=252, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14448, PETRI_PLACES=413, PETRI_TRANSITIONS=794} [2024-06-28 04:06:01,671 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 370 predicate places. [2024-06-28 04:06:01,671 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 794 transitions, 14448 flow [2024-06-28 04:06:01,671 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 04:06:01,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:01,671 INFO L208 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 04:06:01,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 04:06:01,671 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 04:06:01,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:01,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1554149291, now seen corresponding path program 6 times [2024-06-28 04:06:01,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:01,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815164384] [2024-06-28 04:06:01,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:01,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:01,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:05,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:06:05,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:05,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815164384] [2024-06-28 04:06:05,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815164384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:05,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:05,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:06:05,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612958479] [2024-06-28 04:06:05,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:05,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:06:05,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:05,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:06:05,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:06:05,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:06:05,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 794 transitions, 14448 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 04:06:05,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:05,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:06:05,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:08,247 INFO L124 PetriNetUnfolderBase]: 4571/7388 cut-off events. [2024-06-28 04:06:08,247 INFO L125 PetriNetUnfolderBase]: For 619866/619879 co-relation queries the response was YES. [2024-06-28 04:06:08,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60921 conditions, 7388 events. 4571/7388 cut-off events. For 619866/619879 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 48909 event pairs, 985 based on Foata normal form. 14/7399 useless extension candidates. Maximal degree in co-relation 60741. Up to 6694 conditions per place. [2024-06-28 04:06:08,358 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 692 selfloop transitions, 128 changer transitions 0/825 dead transitions. [2024-06-28 04:06:08,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 825 transitions, 16346 flow [2024-06-28 04:06:08,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 04:06:08,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 04:06:08,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 203 transitions. [2024-06-28 04:06:08,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3717948717948718 [2024-06-28 04:06:08,360 INFO L175 Difference]: Start difference. First operand has 413 places, 794 transitions, 14448 flow. Second operand 13 states and 203 transitions. [2024-06-28 04:06:08,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 825 transitions, 16346 flow [2024-06-28 04:06:11,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 825 transitions, 15648 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-28 04:06:11,551 INFO L231 Difference]: Finished difference. Result has 418 places, 794 transitions, 14012 flow [2024-06-28 04:06:11,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=13750, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=794, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=666, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=14012, PETRI_PLACES=418, PETRI_TRANSITIONS=794} [2024-06-28 04:06:11,551 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 375 predicate places. [2024-06-28 04:06:11,552 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 794 transitions, 14012 flow [2024-06-28 04:06:11,552 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 04:06:11,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:11,552 INFO L208 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 04:06:11,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 04:06:11,552 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 04:06:11,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:11,553 INFO L85 PathProgramCache]: Analyzing trace with hash -757924215, now seen corresponding path program 10 times [2024-06-28 04:06:11,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:11,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331308447] [2024-06-28 04:06:11,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:11,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:11,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:14,903 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 04:06:14,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:14,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331308447] [2024-06-28 04:06:14,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331308447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:14,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:14,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:06:14,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860364861] [2024-06-28 04:06:14,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:14,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:06:14,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:14,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:06:14,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:06:14,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:06:14,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 794 transitions, 14012 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 04:06:14,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:14,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:06:14,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:17,627 INFO L124 PetriNetUnfolderBase]: 4591/7414 cut-off events. [2024-06-28 04:06:17,627 INFO L125 PetriNetUnfolderBase]: For 634263/634266 co-relation queries the response was YES. [2024-06-28 04:06:17,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60835 conditions, 7414 events. 4591/7414 cut-off events. For 634263/634266 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 48940 event pairs, 873 based on Foata normal form. 6/7417 useless extension candidates. Maximal degree in co-relation 60654. Up to 6153 conditions per place. [2024-06-28 04:06:17,733 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 469 selfloop transitions, 359 changer transitions 0/833 dead transitions. [2024-06-28 04:06:17,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 833 transitions, 16578 flow [2024-06-28 04:06:17,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 04:06:17,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 04:06:17,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 209 transitions. [2024-06-28 04:06:17,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38278388278388276 [2024-06-28 04:06:17,735 INFO L175 Difference]: Start difference. First operand has 418 places, 794 transitions, 14012 flow. Second operand 13 states and 209 transitions. [2024-06-28 04:06:17,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 833 transitions, 16578 flow [2024-06-28 04:06:20,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 833 transitions, 16322 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-06-28 04:06:20,300 INFO L231 Difference]: Finished difference. Result has 419 places, 800 transitions, 14597 flow [2024-06-28 04:06:20,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=13756, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=794, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=353, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=14597, PETRI_PLACES=419, PETRI_TRANSITIONS=800} [2024-06-28 04:06:20,301 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 376 predicate places. [2024-06-28 04:06:20,301 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 800 transitions, 14597 flow [2024-06-28 04:06:20,301 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 04:06:20,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:20,301 INFO L208 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 04:06:20,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 04:06:20,301 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 04:06:20,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:20,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1557636977, now seen corresponding path program 11 times [2024-06-28 04:06:20,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:20,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399344216] [2024-06-28 04:06:20,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:20,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:20,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:23,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:06:23,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:23,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399344216] [2024-06-28 04:06:23,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399344216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:23,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:23,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:06:23,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292767385] [2024-06-28 04:06:23,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:23,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:06:23,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:23,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:06:23,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:06:23,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:06:23,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 800 transitions, 14597 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 04:06:23,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:23,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:06:23,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:26,347 INFO L124 PetriNetUnfolderBase]: 4579/7398 cut-off events. [2024-06-28 04:06:26,347 INFO L125 PetriNetUnfolderBase]: For 634172/634175 co-relation queries the response was YES. [2024-06-28 04:06:26,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61231 conditions, 7398 events. 4579/7398 cut-off events. For 634172/634175 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 48849 event pairs, 873 based on Foata normal form. 6/7401 useless extension candidates. Maximal degree in co-relation 61049. Up to 6143 conditions per place. [2024-06-28 04:06:26,477 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 472 selfloop transitions, 355 changer transitions 0/832 dead transitions. [2024-06-28 04:06:26,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 832 transitions, 17055 flow [2024-06-28 04:06:26,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 04:06:26,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 04:06:26,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 198 transitions. [2024-06-28 04:06:26,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-28 04:06:26,478 INFO L175 Difference]: Start difference. First operand has 419 places, 800 transitions, 14597 flow. Second operand 12 states and 198 transitions. [2024-06-28 04:06:26,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 832 transitions, 17055 flow [2024-06-28 04:06:30,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 832 transitions, 16333 flow, removed 70 selfloop flow, removed 8 redundant places. [2024-06-28 04:06:30,040 INFO L231 Difference]: Finished difference. Result has 423 places, 800 transitions, 14595 flow [2024-06-28 04:06:30,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=13875, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=800, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=355, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14595, PETRI_PLACES=423, PETRI_TRANSITIONS=800} [2024-06-28 04:06:30,040 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 380 predicate places. [2024-06-28 04:06:30,040 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 800 transitions, 14595 flow [2024-06-28 04:06:30,040 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 04:06:30,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:30,041 INFO L208 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 04:06:30,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 04:06:30,041 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 04:06:30,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:30,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1554155243, now seen corresponding path program 12 times [2024-06-28 04:06:30,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:30,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166268418] [2024-06-28 04:06:30,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:30,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:30,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:33,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:06:33,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:33,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166268418] [2024-06-28 04:06:33,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166268418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:33,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:33,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:06:33,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078791708] [2024-06-28 04:06:33,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:33,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:06:33,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:33,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:06:33,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:06:33,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:06:33,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 800 transitions, 14595 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 04:06:33,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:33,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:06:33,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:36,394 INFO L124 PetriNetUnfolderBase]: 4576/7408 cut-off events. [2024-06-28 04:06:36,395 INFO L125 PetriNetUnfolderBase]: For 631122/631135 co-relation queries the response was YES. [2024-06-28 04:06:36,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61110 conditions, 7408 events. 4576/7408 cut-off events. For 631122/631135 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 49178 event pairs, 1016 based on Foata normal form. 13/7418 useless extension candidates. Maximal degree in co-relation 60927. Up to 6832 conditions per place. [2024-06-28 04:06:36,522 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 725 selfloop transitions, 92 changer transitions 0/822 dead transitions. [2024-06-28 04:06:36,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 822 transitions, 16293 flow [2024-06-28 04:06:36,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:06:36,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:06:36,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 169 transitions. [2024-06-28 04:06:36,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3658008658008658 [2024-06-28 04:06:36,523 INFO L175 Difference]: Start difference. First operand has 423 places, 800 transitions, 14595 flow. Second operand 11 states and 169 transitions. [2024-06-28 04:06:36,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 822 transitions, 16293 flow [2024-06-28 04:06:40,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 822 transitions, 15452 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-06-28 04:06:40,136 INFO L231 Difference]: Finished difference. Result has 423 places, 800 transitions, 13946 flow [2024-06-28 04:06:40,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=13754, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=800, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=708, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13946, PETRI_PLACES=423, PETRI_TRANSITIONS=800} [2024-06-28 04:06:40,136 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 380 predicate places. [2024-06-28 04:06:40,136 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 800 transitions, 13946 flow [2024-06-28 04:06:40,137 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 04:06:40,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:40,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:06:40,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 04:06:40,137 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 04:06:40,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:40,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1546792247, now seen corresponding path program 12 times [2024-06-28 04:06:40,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:40,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146269389] [2024-06-28 04:06:40,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:40,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:40,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:43,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:06:43,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:43,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146269389] [2024-06-28 04:06:43,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146269389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:43,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:43,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:06:43,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405457900] [2024-06-28 04:06:43,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:43,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:06:43,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:43,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:06:43,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:06:43,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:06:43,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 800 transitions, 13946 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 04:06:43,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:43,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:06:43,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:45,983 INFO L124 PetriNetUnfolderBase]: 4564/7376 cut-off events. [2024-06-28 04:06:45,983 INFO L125 PetriNetUnfolderBase]: For 633937/633950 co-relation queries the response was YES. [2024-06-28 04:06:46,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59792 conditions, 7376 events. 4564/7376 cut-off events. For 633937/633950 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 48849 event pairs, 988 based on Foata normal form. 16/7389 useless extension candidates. Maximal degree in co-relation 59608. Up to 6750 conditions per place. [2024-06-28 04:06:46,106 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 713 selfloop transitions, 107 changer transitions 0/825 dead transitions. [2024-06-28 04:06:46,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 825 transitions, 15656 flow [2024-06-28 04:06:46,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:06:46,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:06:46,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-28 04:06:46,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38571428571428573 [2024-06-28 04:06:46,108 INFO L175 Difference]: Start difference. First operand has 423 places, 800 transitions, 13946 flow. Second operand 10 states and 162 transitions. [2024-06-28 04:06:46,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 825 transitions, 15656 flow [2024-06-28 04:06:49,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 825 transitions, 15412 flow, removed 30 selfloop flow, removed 10 redundant places. [2024-06-28 04:06:49,392 INFO L231 Difference]: Finished difference. Result has 423 places, 800 transitions, 13926 flow [2024-06-28 04:06:49,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=13702, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=800, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=693, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13926, PETRI_PLACES=423, PETRI_TRANSITIONS=800} [2024-06-28 04:06:49,393 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 380 predicate places. [2024-06-28 04:06:49,393 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 800 transitions, 13926 flow [2024-06-28 04:06:49,393 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 04:06:49,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:49,393 INFO L208 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 04:06:49,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 04:06:49,394 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 04:06:49,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:49,394 INFO L85 PathProgramCache]: Analyzing trace with hash -746565567, now seen corresponding path program 1 times [2024-06-28 04:06:49,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:49,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418244409] [2024-06-28 04:06:49,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:49,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:49,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:06:53,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:06:53,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:06:53,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418244409] [2024-06-28 04:06:53,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418244409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:06:53,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:06:53,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 04:06:53,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416142242] [2024-06-28 04:06:53,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:06:53,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 04:06:53,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:06:53,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 04:06:53,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 04:06:53,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:06:53,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 800 transitions, 13926 flow. Second operand has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:53,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:06:53,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:06:53,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:06:55,920 INFO L124 PetriNetUnfolderBase]: 4584/7413 cut-off events. [2024-06-28 04:06:55,921 INFO L125 PetriNetUnfolderBase]: For 650832/650832 co-relation queries the response was YES. [2024-06-28 04:06:56,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60058 conditions, 7413 events. 4584/7413 cut-off events. For 650832/650832 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 49000 event pairs, 876 based on Foata normal form. 6/7417 useless extension candidates. Maximal degree in co-relation 59873. Up to 6631 conditions per place. [2024-06-28 04:06:56,040 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 744 selfloop transitions, 89 changer transitions 0/838 dead transitions. [2024-06-28 04:06:56,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 838 transitions, 15778 flow [2024-06-28 04:06:56,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:06:56,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:06:56,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 04:06:56,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3904761904761905 [2024-06-28 04:06:56,042 INFO L175 Difference]: Start difference. First operand has 423 places, 800 transitions, 13926 flow. Second operand 10 states and 164 transitions. [2024-06-28 04:06:56,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 838 transitions, 15778 flow [2024-06-28 04:06:59,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 838 transitions, 15552 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 04:06:59,299 INFO L231 Difference]: Finished difference. Result has 425 places, 803 transitions, 13932 flow [2024-06-28 04:06:59,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=13700, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=800, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=712, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13932, PETRI_PLACES=425, PETRI_TRANSITIONS=803} [2024-06-28 04:06:59,299 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 382 predicate places. [2024-06-28 04:06:59,299 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 803 transitions, 13932 flow [2024-06-28 04:06:59,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.727272727272727) internal successors, (107), 11 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 04:06:59,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:06:59,301 INFO L208 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 04:06:59,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 04:06:59,301 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 04:06:59,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:06:59,302 INFO L85 PathProgramCache]: Analyzing trace with hash 239703115, now seen corresponding path program 7 times [2024-06-28 04:06:59,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:06:59,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804187406] [2024-06-28 04:06:59,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:06:59,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:06:59,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:07:02,624 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 04:07:02,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:07:02,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804187406] [2024-06-28 04:07:02,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804187406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:07:02,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:07:02,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:07:02,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391150031] [2024-06-28 04:07:02,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:07:02,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:07:02,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:07:02,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:07:02,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:07:02,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:07:02,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 803 transitions, 13932 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 04:07:02,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:07:02,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:07:02,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:07:05,425 INFO L124 PetriNetUnfolderBase]: 4594/7436 cut-off events. [2024-06-28 04:07:05,426 INFO L125 PetriNetUnfolderBase]: For 666904/666918 co-relation queries the response was YES. [2024-06-28 04:07:05,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60071 conditions, 7436 events. 4594/7436 cut-off events. For 666904/666918 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 49210 event pairs, 887 based on Foata normal form. 13/7439 useless extension candidates. Maximal degree in co-relation 59884. Up to 6761 conditions per place. [2024-06-28 04:07:05,528 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 736 selfloop transitions, 87 changer transitions 0/828 dead transitions. [2024-06-28 04:07:05,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 828 transitions, 15703 flow [2024-06-28 04:07:05,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:07:05,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:07:05,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-28 04:07:05,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3869047619047619 [2024-06-28 04:07:05,530 INFO L175 Difference]: Start difference. First operand has 425 places, 803 transitions, 13932 flow. Second operand 8 states and 130 transitions. [2024-06-28 04:07:05,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 828 transitions, 15703 flow [2024-06-28 04:07:08,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 828 transitions, 15589 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 04:07:08,605 INFO L231 Difference]: Finished difference. Result has 427 places, 804 transitions, 14011 flow [2024-06-28 04:07:08,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=13818, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=803, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=716, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14011, PETRI_PLACES=427, PETRI_TRANSITIONS=804} [2024-06-28 04:07:08,605 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 384 predicate places. [2024-06-28 04:07:08,605 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 804 transitions, 14011 flow [2024-06-28 04:07:08,606 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 04:07:08,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:07:08,606 INFO L208 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 04:07:08,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 04:07:08,606 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 04:07:08,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:07:08,606 INFO L85 PathProgramCache]: Analyzing trace with hash 729463633, now seen corresponding path program 8 times [2024-06-28 04:07:08,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:07:08,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225702012] [2024-06-28 04:07:08,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:07:08,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:07:08,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:07:11,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:07:11,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:07:11,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225702012] [2024-06-28 04:07:11,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225702012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:07:11,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:07:11,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:07:11,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691195343] [2024-06-28 04:07:11,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:07:11,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:07:11,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:07:11,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:07:11,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:07:11,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:07:11,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 804 transitions, 14011 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 04:07:11,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:07:11,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:07:11,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:07:14,327 INFO L124 PetriNetUnfolderBase]: 4630/7502 cut-off events. [2024-06-28 04:07:14,327 INFO L125 PetriNetUnfolderBase]: For 679780/679788 co-relation queries the response was YES. [2024-06-28 04:07:14,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60827 conditions, 7502 events. 4630/7502 cut-off events. For 679780/679788 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 49970 event pairs, 957 based on Foata normal form. 18/7518 useless extension candidates. Maximal degree in co-relation 60638. Up to 6743 conditions per place. [2024-06-28 04:07:14,449 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 746 selfloop transitions, 94 changer transitions 0/845 dead transitions. [2024-06-28 04:07:14,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 845 transitions, 15875 flow [2024-06-28 04:07:14,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:07:14,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:07:14,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-28 04:07:14,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 04:07:14,451 INFO L175 Difference]: Start difference. First operand has 427 places, 804 transitions, 14011 flow. Second operand 10 states and 168 transitions. [2024-06-28 04:07:14,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 845 transitions, 15875 flow [2024-06-28 04:07:17,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 845 transitions, 15696 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 04:07:17,988 INFO L231 Difference]: Finished difference. Result has 431 places, 805 transitions, 14056 flow [2024-06-28 04:07:17,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=13832, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=804, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=710, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14056, PETRI_PLACES=431, PETRI_TRANSITIONS=805} [2024-06-28 04:07:17,989 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 388 predicate places. [2024-06-28 04:07:17,989 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 805 transitions, 14056 flow [2024-06-28 04:07:17,989 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 04:07:17,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:07:17,989 INFO L208 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 04:07:17,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 04:07:17,990 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 04:07:17,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:07:17,990 INFO L85 PathProgramCache]: Analyzing trace with hash 729137203, now seen corresponding path program 9 times [2024-06-28 04:07:17,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:07:17,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075801292] [2024-06-28 04:07:17,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:07:17,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:07:18,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:07:21,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:07:21,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:07:21,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075801292] [2024-06-28 04:07:21,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075801292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:07:21,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:07:21,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:07:21,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069320495] [2024-06-28 04:07:21,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:07:21,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:07:21,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:07:21,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:07:21,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:07:21,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:07:21,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 805 transitions, 14056 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 04:07:21,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:07:21,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:07:21,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:07:23,783 INFO L124 PetriNetUnfolderBase]: 4658/7549 cut-off events. [2024-06-28 04:07:23,783 INFO L125 PetriNetUnfolderBase]: For 684343/684351 co-relation queries the response was YES. [2024-06-28 04:07:23,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61313 conditions, 7549 events. 4658/7549 cut-off events. For 684343/684351 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 50329 event pairs, 697 based on Foata normal form. 16/7563 useless extension candidates. Maximal degree in co-relation 61123. Up to 6150 conditions per place. [2024-06-28 04:07:23,909 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 700 selfloop transitions, 150 changer transitions 0/855 dead transitions. [2024-06-28 04:07:23,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 855 transitions, 16180 flow [2024-06-28 04:07:23,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:07:23,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:07:23,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-28 04:07:23,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41904761904761906 [2024-06-28 04:07:23,911 INFO L175 Difference]: Start difference. First operand has 431 places, 805 transitions, 14056 flow. Second operand 10 states and 176 transitions. [2024-06-28 04:07:23,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 855 transitions, 16180 flow [2024-06-28 04:07:28,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 855 transitions, 15981 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 04:07:28,059 INFO L231 Difference]: Finished difference. Result has 433 places, 806 transitions, 14208 flow [2024-06-28 04:07:28,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=13865, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=805, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=656, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14208, PETRI_PLACES=433, PETRI_TRANSITIONS=806} [2024-06-28 04:07:28,060 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 390 predicate places. [2024-06-28 04:07:28,060 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 806 transitions, 14208 flow [2024-06-28 04:07:28,060 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 04:07:28,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:07:28,060 INFO L208 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 04:07:28,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 04:07:28,060 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 04:07:28,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:07:28,061 INFO L85 PathProgramCache]: Analyzing trace with hash -612875695, now seen corresponding path program 10 times [2024-06-28 04:07:28,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:07:28,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842782990] [2024-06-28 04:07:28,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:07:28,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:07:28,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:07:31,674 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 04:07:31,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:07:31,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842782990] [2024-06-28 04:07:31,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842782990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:07:31,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:07:31,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:07:31,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405924998] [2024-06-28 04:07:31,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:07:31,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:07:31,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:07:31,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:07:31,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:07:31,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:07:31,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 806 transitions, 14208 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 04:07:31,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:07:31,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:07:31,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:07:34,066 INFO L124 PetriNetUnfolderBase]: 4635/7496 cut-off events. [2024-06-28 04:07:34,067 INFO L125 PetriNetUnfolderBase]: For 637518/637518 co-relation queries the response was YES. [2024-06-28 04:07:34,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60328 conditions, 7496 events. 4635/7496 cut-off events. For 637518/637518 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 49684 event pairs, 888 based on Foata normal form. 10/7504 useless extension candidates. Maximal degree in co-relation 60137. Up to 6802 conditions per place. [2024-06-28 04:07:34,193 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 746 selfloop transitions, 85 changer transitions 0/836 dead transitions. [2024-06-28 04:07:34,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 836 transitions, 16005 flow [2024-06-28 04:07:34,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:07:34,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:07:34,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-28 04:07:34,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40476190476190477 [2024-06-28 04:07:34,194 INFO L175 Difference]: Start difference. First operand has 433 places, 806 transitions, 14208 flow. Second operand 8 states and 136 transitions. [2024-06-28 04:07:34,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 836 transitions, 16005 flow [2024-06-28 04:07:38,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 836 transitions, 15784 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 04:07:38,652 INFO L231 Difference]: Finished difference. Result has 433 places, 806 transitions, 14167 flow [2024-06-28 04:07:38,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=13987, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=806, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=721, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14167, PETRI_PLACES=433, PETRI_TRANSITIONS=806} [2024-06-28 04:07:38,653 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 390 predicate places. [2024-06-28 04:07:38,653 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 806 transitions, 14167 flow [2024-06-28 04:07:38,653 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 04:07:38,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:07:38,653 INFO L208 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 04:07:38,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 04:07:38,653 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 04:07:38,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:07:38,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1574003197, now seen corresponding path program 13 times [2024-06-28 04:07:38,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:07:38,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737189289] [2024-06-28 04:07:38,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:07:38,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:07:38,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:07:41,804 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 04:07:41,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:07:41,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737189289] [2024-06-28 04:07:41,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737189289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:07:41,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:07:41,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:07:41,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066107318] [2024-06-28 04:07:41,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:07:41,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:07:41,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:07:41,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:07:41,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:07:41,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:07:41,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 806 transitions, 14167 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 04:07:41,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:07:41,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:07:41,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:07:44,757 INFO L124 PetriNetUnfolderBase]: 4648/7534 cut-off events. [2024-06-28 04:07:44,757 INFO L125 PetriNetUnfolderBase]: For 602917/602962 co-relation queries the response was YES. [2024-06-28 04:07:44,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60136 conditions, 7534 events. 4648/7534 cut-off events. For 602917/602962 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 50310 event pairs, 917 based on Foata normal form. 35/7558 useless extension candidates. Maximal degree in co-relation 59945. Up to 6523 conditions per place. [2024-06-28 04:07:44,860 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 586 selfloop transitions, 262 changer transitions 0/853 dead transitions. [2024-06-28 04:07:44,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 853 transitions, 16517 flow [2024-06-28 04:07:44,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:07:44,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:07:44,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-28 04:07:44,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4261904761904762 [2024-06-28 04:07:44,862 INFO L175 Difference]: Start difference. First operand has 433 places, 806 transitions, 14167 flow. Second operand 10 states and 179 transitions. [2024-06-28 04:07:44,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 853 transitions, 16517 flow [2024-06-28 04:07:48,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 853 transitions, 16245 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 04:07:48,237 INFO L231 Difference]: Finished difference. Result has 436 places, 812 transitions, 14565 flow [2024-06-28 04:07:48,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=13907, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=806, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=256, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=550, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14565, PETRI_PLACES=436, PETRI_TRANSITIONS=812} [2024-06-28 04:07:48,238 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 393 predicate places. [2024-06-28 04:07:48,238 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 812 transitions, 14565 flow [2024-06-28 04:07:48,238 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 04:07:48,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:07:48,239 INFO L208 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 04:07:48,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 04:07:48,239 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 04:07:48,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:07:48,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1178653689, now seen corresponding path program 14 times [2024-06-28 04:07:48,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:07:48,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867629995] [2024-06-28 04:07:48,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:07:48,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:07:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:07:51,811 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 04:07:51,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:07:51,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867629995] [2024-06-28 04:07:51,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867629995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:07:51,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:07:51,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:07:51,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823769304] [2024-06-28 04:07:51,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:07:51,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:07:51,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:07:51,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:07:51,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:07:51,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:07:51,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 812 transitions, 14565 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 04:07:51,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:07:51,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:07:51,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:07:55,339 INFO L124 PetriNetUnfolderBase]: 4653/7551 cut-off events. [2024-06-28 04:07:55,339 INFO L125 PetriNetUnfolderBase]: For 581741/581786 co-relation queries the response was YES. [2024-06-28 04:07:55,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60309 conditions, 7551 events. 4653/7551 cut-off events. For 581741/581786 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 50429 event pairs, 925 based on Foata normal form. 35/7575 useless extension candidates. Maximal degree in co-relation 60117. Up to 6529 conditions per place. [2024-06-28 04:07:55,447 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 587 selfloop transitions, 266 changer transitions 0/858 dead transitions. [2024-06-28 04:07:55,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 858 transitions, 16863 flow [2024-06-28 04:07:55,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 04:07:55,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 04:07:55,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 203 transitions. [2024-06-28 04:07:55,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-28 04:07:55,464 INFO L175 Difference]: Start difference. First operand has 436 places, 812 transitions, 14565 flow. Second operand 12 states and 203 transitions. [2024-06-28 04:07:55,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 858 transitions, 16863 flow [2024-06-28 04:07:58,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 858 transitions, 16142 flow, removed 59 selfloop flow, removed 7 redundant places. [2024-06-28 04:07:58,271 INFO L231 Difference]: Finished difference. Result has 441 places, 815 transitions, 14452 flow [2024-06-28 04:07:58,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=13878, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=812, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=263, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=549, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14452, PETRI_PLACES=441, PETRI_TRANSITIONS=815} [2024-06-28 04:07:58,272 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 398 predicate places. [2024-06-28 04:07:58,272 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 815 transitions, 14452 flow [2024-06-28 04:07:58,272 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 04:07:58,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:07:58,273 INFO L208 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 04:07:58,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 04:07:58,273 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 04:07:58,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:07:58,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1311155815, now seen corresponding path program 15 times [2024-06-28 04:07:58,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:07:58,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134660020] [2024-06-28 04:07:58,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:07:58,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:07:58,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:01,525 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 04:08:01,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:01,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134660020] [2024-06-28 04:08:01,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134660020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:01,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:01,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:08:01,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105166115] [2024-06-28 04:08:01,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:01,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:08:01,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:01,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:08:01,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:08:01,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:08:01,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 815 transitions, 14452 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 04:08:01,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:01,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:08:01,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:04,358 INFO L124 PetriNetUnfolderBase]: 4674/7566 cut-off events. [2024-06-28 04:08:04,358 INFO L125 PetriNetUnfolderBase]: For 596369/596379 co-relation queries the response was YES. [2024-06-28 04:08:04,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60727 conditions, 7566 events. 4674/7566 cut-off events. For 596369/596379 co-relation queries the response was YES. Maximal size of possible extension queue 582. Compared 50394 event pairs, 900 based on Foata normal form. 11/7572 useless extension candidates. Maximal degree in co-relation 60534. Up to 6553 conditions per place. [2024-06-28 04:08:04,721 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 590 selfloop transitions, 263 changer transitions 0/858 dead transitions. [2024-06-28 04:08:04,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 858 transitions, 16822 flow [2024-06-28 04:08:04,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:08:04,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:08:04,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 151 transitions. [2024-06-28 04:08:04,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494047619047619 [2024-06-28 04:08:04,725 INFO L175 Difference]: Start difference. First operand has 441 places, 815 transitions, 14452 flow. Second operand 8 states and 151 transitions. [2024-06-28 04:08:04,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 858 transitions, 16822 flow [2024-06-28 04:08:08,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 858 transitions, 16248 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-28 04:08:08,235 INFO L231 Difference]: Finished difference. Result has 439 places, 824 transitions, 14584 flow [2024-06-28 04:08:08,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=13896, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=815, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=254, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=561, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14584, PETRI_PLACES=439, PETRI_TRANSITIONS=824} [2024-06-28 04:08:08,236 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 396 predicate places. [2024-06-28 04:08:08,236 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 824 transitions, 14584 flow [2024-06-28 04:08:08,236 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 04:08:08,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:08,236 INFO L208 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 04:08:08,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 04:08:08,236 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 04:08:08,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:08,237 INFO L85 PathProgramCache]: Analyzing trace with hash -8628541, now seen corresponding path program 7 times [2024-06-28 04:08:08,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:08,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580028030] [2024-06-28 04:08:08,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:08,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:08,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:11,278 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 04:08:11,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:11,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580028030] [2024-06-28 04:08:11,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580028030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:11,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:11,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:08:11,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514462277] [2024-06-28 04:08:11,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:11,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:08:11,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:11,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:08:11,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:08:11,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:08:11,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 824 transitions, 14584 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 04:08:11,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:11,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:08:11,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:14,182 INFO L124 PetriNetUnfolderBase]: 4700/7623 cut-off events. [2024-06-28 04:08:14,183 INFO L125 PetriNetUnfolderBase]: For 624277/624322 co-relation queries the response was YES. [2024-06-28 04:08:14,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61260 conditions, 7623 events. 4700/7623 cut-off events. For 624277/624322 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 50959 event pairs, 1053 based on Foata normal form. 36/7648 useless extension candidates. Maximal degree in co-relation 61066. Up to 6940 conditions per place. [2024-06-28 04:08:14,288 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 740 selfloop transitions, 109 changer transitions 0/854 dead transitions. [2024-06-28 04:08:14,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 854 transitions, 16646 flow [2024-06-28 04:08:14,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 04:08:14,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 04:08:14,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-28 04:08:14,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3915343915343915 [2024-06-28 04:08:14,290 INFO L175 Difference]: Start difference. First operand has 439 places, 824 transitions, 14584 flow. Second operand 9 states and 148 transitions. [2024-06-28 04:08:14,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 854 transitions, 16646 flow [2024-06-28 04:08:17,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 854 transitions, 16307 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 04:08:17,897 INFO L231 Difference]: Finished difference. Result has 443 places, 830 transitions, 14577 flow [2024-06-28 04:08:17,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=14247, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=824, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=718, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14577, PETRI_PLACES=443, PETRI_TRANSITIONS=830} [2024-06-28 04:08:17,898 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 400 predicate places. [2024-06-28 04:08:17,898 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 830 transitions, 14577 flow [2024-06-28 04:08:17,898 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 04:08:17,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:17,898 INFO L208 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 04:08:17,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 04:08:17,899 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 04:08:17,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:17,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1097491901, now seen corresponding path program 16 times [2024-06-28 04:08:17,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:17,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689884050] [2024-06-28 04:08:17,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:17,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:17,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:21,104 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 04:08:21,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:21,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689884050] [2024-06-28 04:08:21,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689884050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:21,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:21,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:08:21,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970671823] [2024-06-28 04:08:21,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:21,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:08:21,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:21,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:08:21,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:08:21,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:08:21,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 830 transitions, 14577 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 04:08:21,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:21,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:08:21,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:24,145 INFO L124 PetriNetUnfolderBase]: 4713/7646 cut-off events. [2024-06-28 04:08:24,145 INFO L125 PetriNetUnfolderBase]: For 623172/623217 co-relation queries the response was YES. [2024-06-28 04:08:24,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61202 conditions, 7646 events. 4713/7646 cut-off events. For 623172/623217 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 51121 event pairs, 928 based on Foata normal form. 35/7670 useless extension candidates. Maximal degree in co-relation 61008. Up to 6604 conditions per place. [2024-06-28 04:08:24,274 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 579 selfloop transitions, 286 changer transitions 0/870 dead transitions. [2024-06-28 04:08:24,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 870 transitions, 16893 flow [2024-06-28 04:08:24,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:08:24,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:08:24,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-28 04:08:24,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-28 04:08:24,276 INFO L175 Difference]: Start difference. First operand has 443 places, 830 transitions, 14577 flow. Second operand 11 states and 182 transitions. [2024-06-28 04:08:24,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 870 transitions, 16893 flow [2024-06-28 04:08:27,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 870 transitions, 16714 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-28 04:08:27,600 INFO L231 Difference]: Finished difference. Result has 449 places, 836 transitions, 15066 flow [2024-06-28 04:08:27,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=14398, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=830, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=280, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=550, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15066, PETRI_PLACES=449, PETRI_TRANSITIONS=836} [2024-06-28 04:08:27,601 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 406 predicate places. [2024-06-28 04:08:27,601 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 836 transitions, 15066 flow [2024-06-28 04:08:27,601 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 04:08:27,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:27,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:27,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 04:08:27,601 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 04:08:27,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:27,602 INFO L85 PathProgramCache]: Analyzing trace with hash -824390277, now seen corresponding path program 8 times [2024-06-28 04:08:27,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:27,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051915217] [2024-06-28 04:08:27,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:27,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:27,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:30,488 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 04:08:30,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:30,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051915217] [2024-06-28 04:08:30,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051915217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:30,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:30,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:08:30,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259200539] [2024-06-28 04:08:30,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:30,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:08:30,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:30,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:08:30,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:08:30,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:08:30,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 836 transitions, 15066 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 04:08:30,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:30,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:08:30,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:33,181 INFO L124 PetriNetUnfolderBase]: 4723/7655 cut-off events. [2024-06-28 04:08:33,181 INFO L125 PetriNetUnfolderBase]: For 643532/643577 co-relation queries the response was YES. [2024-06-28 04:08:33,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62062 conditions, 7655 events. 4723/7655 cut-off events. For 643532/643577 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 51136 event pairs, 1051 based on Foata normal form. 36/7680 useless extension candidates. Maximal degree in co-relation 61866. Up to 6983 conditions per place. [2024-06-28 04:08:33,307 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 744 selfloop transitions, 107 changer transitions 0/856 dead transitions. [2024-06-28 04:08:33,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 856 transitions, 16860 flow [2024-06-28 04:08:33,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:08:33,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:08:33,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-28 04:08:33,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3869047619047619 [2024-06-28 04:08:33,308 INFO L175 Difference]: Start difference. First operand has 449 places, 836 transitions, 15066 flow. Second operand 8 states and 130 transitions. [2024-06-28 04:08:33,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 856 transitions, 16860 flow [2024-06-28 04:08:37,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 856 transitions, 16376 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 04:08:37,441 INFO L231 Difference]: Finished difference. Result has 450 places, 839 transitions, 14848 flow [2024-06-28 04:08:37,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=14582, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=836, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=729, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14848, PETRI_PLACES=450, PETRI_TRANSITIONS=839} [2024-06-28 04:08:37,441 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 407 predicate places. [2024-06-28 04:08:37,441 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 839 transitions, 14848 flow [2024-06-28 04:08:37,441 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 04:08:37,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:37,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:08:37,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 04:08:37,442 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 04:08:37,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:37,442 INFO L85 PathProgramCache]: Analyzing trace with hash -823974567, now seen corresponding path program 9 times [2024-06-28 04:08:37,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:37,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37916860] [2024-06-28 04:08:37,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:37,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:37,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:40,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:08:40,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:40,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37916860] [2024-06-28 04:08:40,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37916860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:40,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:40,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:08:40,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68338310] [2024-06-28 04:08:40,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:40,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:08:40,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:40,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:08:40,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:08:40,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:08:40,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 839 transitions, 14848 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 04:08:40,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:40,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:08:40,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:43,212 INFO L124 PetriNetUnfolderBase]: 4749/7705 cut-off events. [2024-06-28 04:08:43,212 INFO L125 PetriNetUnfolderBase]: For 661692/661737 co-relation queries the response was YES. [2024-06-28 04:08:43,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62263 conditions, 7705 events. 4749/7705 cut-off events. For 661692/661737 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 51630 event pairs, 1023 based on Foata normal form. 36/7730 useless extension candidates. Maximal degree in co-relation 62066. Up to 6731 conditions per place. [2024-06-28 04:08:43,352 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 692 selfloop transitions, 173 changer transitions 0/870 dead transitions. [2024-06-28 04:08:43,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 870 transitions, 17208 flow [2024-06-28 04:08:43,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:08:43,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:08:43,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-28 04:08:43,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-06-28 04:08:43,354 INFO L175 Difference]: Start difference. First operand has 450 places, 839 transitions, 14848 flow. Second operand 8 states and 138 transitions. [2024-06-28 04:08:43,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 870 transitions, 17208 flow [2024-06-28 04:08:47,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 870 transitions, 16976 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 04:08:47,140 INFO L231 Difference]: Finished difference. Result has 452 places, 848 transitions, 15154 flow [2024-06-28 04:08:47,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=14616, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=839, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=672, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15154, PETRI_PLACES=452, PETRI_TRANSITIONS=848} [2024-06-28 04:08:47,141 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 409 predicate places. [2024-06-28 04:08:47,141 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 848 transitions, 15154 flow [2024-06-28 04:08:47,141 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 04:08:47,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:47,141 INFO L208 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 04:08:47,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 04:08:47,142 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 04:08:47,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:47,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1305793435, now seen corresponding path program 17 times [2024-06-28 04:08:47,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:47,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328227318] [2024-06-28 04:08:47,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:47,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:47,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:08:50,431 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 04:08:50,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:08:50,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328227318] [2024-06-28 04:08:50,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328227318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:08:50,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:08:50,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:08:50,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833804078] [2024-06-28 04:08:50,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:08:50,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:08:50,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:08:50,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:08:50,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:08:50,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:08:50,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 848 transitions, 15154 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 04:08:50,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:08:50,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:08:50,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:08:53,963 INFO L124 PetriNetUnfolderBase]: 4754/7699 cut-off events. [2024-06-28 04:08:53,964 INFO L125 PetriNetUnfolderBase]: For 668912/668922 co-relation queries the response was YES. [2024-06-28 04:08:54,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62965 conditions, 7699 events. 4754/7699 cut-off events. For 668912/668922 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 51470 event pairs, 916 based on Foata normal form. 11/7705 useless extension candidates. Maximal degree in co-relation 62767. Up to 6660 conditions per place. [2024-06-28 04:08:54,102 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 604 selfloop transitions, 287 changer transitions 0/896 dead transitions. [2024-06-28 04:08:54,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 896 transitions, 17724 flow [2024-06-28 04:08:54,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:08:54,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:08:54,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-28 04:08:54,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44285714285714284 [2024-06-28 04:08:54,104 INFO L175 Difference]: Start difference. First operand has 452 places, 848 transitions, 15154 flow. Second operand 10 states and 186 transitions. [2024-06-28 04:08:54,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 896 transitions, 17724 flow [2024-06-28 04:08:59,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 896 transitions, 17524 flow, removed 49 selfloop flow, removed 3 redundant places. [2024-06-28 04:08:59,024 INFO L231 Difference]: Finished difference. Result has 459 places, 851 transitions, 15582 flow [2024-06-28 04:08:59,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=14954, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=848, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=284, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=564, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15582, PETRI_PLACES=459, PETRI_TRANSITIONS=851} [2024-06-28 04:08:59,025 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 416 predicate places. [2024-06-28 04:08:59,025 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 851 transitions, 15582 flow [2024-06-28 04:08:59,025 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 04:08:59,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:08:59,025 INFO L208 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 04:08:59,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 04:08:59,026 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 04:08:59,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:08:59,026 INFO L85 PathProgramCache]: Analyzing trace with hash 340804499, now seen corresponding path program 13 times [2024-06-28 04:08:59,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:08:59,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242258797] [2024-06-28 04:08:59,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:08:59,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:08:59,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:09:02,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:09:02,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:09:02,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242258797] [2024-06-28 04:09:02,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242258797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:09:02,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:09:02,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:09:02,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851512760] [2024-06-28 04:09:02,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:09:02,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:09:02,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:09:02,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:09:02,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:09:02,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:09:02,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 851 transitions, 15582 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 04:09:02,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:09:02,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:09:02,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:09:05,816 INFO L124 PetriNetUnfolderBase]: 4774/7721 cut-off events. [2024-06-28 04:09:05,817 INFO L125 PetriNetUnfolderBase]: For 685706/685719 co-relation queries the response was YES. [2024-06-28 04:09:06,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63673 conditions, 7721 events. 4774/7721 cut-off events. For 685706/685719 co-relation queries the response was YES. Maximal size of possible extension queue 599. Compared 51539 event pairs, 846 based on Foata normal form. 14/7732 useless extension candidates. Maximal degree in co-relation 63473. Up to 6702 conditions per place. [2024-06-28 04:09:06,277 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 616 selfloop transitions, 270 changer transitions 0/891 dead transitions. [2024-06-28 04:09:06,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 891 transitions, 17766 flow [2024-06-28 04:09:06,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:09:06,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:09:06,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-28 04:09:06,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119047619047619 [2024-06-28 04:09:06,279 INFO L175 Difference]: Start difference. First operand has 459 places, 851 transitions, 15582 flow. Second operand 10 states and 173 transitions. [2024-06-28 04:09:06,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 891 transitions, 17766 flow [2024-06-28 04:09:10,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 891 transitions, 16926 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-28 04:09:10,064 INFO L231 Difference]: Finished difference. Result has 461 places, 857 transitions, 15553 flow [2024-06-28 04:09:10,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=14744, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=851, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=264, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=581, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15553, PETRI_PLACES=461, PETRI_TRANSITIONS=857} [2024-06-28 04:09:10,065 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 418 predicate places. [2024-06-28 04:09:10,065 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 857 transitions, 15553 flow [2024-06-28 04:09:10,065 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 04:09:10,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:09:10,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:09:10,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 04:09:10,066 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 04:09:10,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:09:10,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1860401485, now seen corresponding path program 18 times [2024-06-28 04:09:10,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:09:10,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050277277] [2024-06-28 04:09:10,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:09:10,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:09:10,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:09:13,886 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 04:09:13,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:09:13,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050277277] [2024-06-28 04:09:13,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050277277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:09:13,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:09:13,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:09:13,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600555775] [2024-06-28 04:09:13,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:09:13,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:09:13,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:09:13,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:09:13,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:09:13,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:09:13,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 857 transitions, 15553 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 04:09:13,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:09:13,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:09:13,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:09:16,564 INFO L124 PetriNetUnfolderBase]: 4771/7727 cut-off events. [2024-06-28 04:09:16,564 INFO L125 PetriNetUnfolderBase]: For 672917/672930 co-relation queries the response was YES. [2024-06-28 04:09:16,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63767 conditions, 7727 events. 4771/7727 cut-off events. For 672917/672930 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 51663 event pairs, 903 based on Foata normal form. 13/7737 useless extension candidates. Maximal degree in co-relation 63565. Up to 6948 conditions per place. [2024-06-28 04:09:16,700 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 703 selfloop transitions, 177 changer transitions 0/885 dead transitions. [2024-06-28 04:09:16,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 885 transitions, 17411 flow [2024-06-28 04:09:16,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 04:09:16,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 04:09:16,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-28 04:09:16,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226190476190476 [2024-06-28 04:09:16,702 INFO L175 Difference]: Start difference. First operand has 461 places, 857 transitions, 15553 flow. Second operand 8 states and 142 transitions. [2024-06-28 04:09:16,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 885 transitions, 17411 flow [2024-06-28 04:09:21,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 885 transitions, 17045 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-28 04:09:21,071 INFO L231 Difference]: Finished difference. Result has 464 places, 857 transitions, 15557 flow [2024-06-28 04:09:21,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=15187, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=857, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=680, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15557, PETRI_PLACES=464, PETRI_TRANSITIONS=857} [2024-06-28 04:09:21,072 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 421 predicate places. [2024-06-28 04:09:21,072 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 857 transitions, 15557 flow [2024-06-28 04:09:21,073 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 04:09:21,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:09:21,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 04:09:21,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 04:09:21,073 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 04:09:21,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:09:21,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1854860545, now seen corresponding path program 19 times [2024-06-28 04:09:21,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:09:21,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155709806] [2024-06-28 04:09:21,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:09:21,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:09:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:09:24,486 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 04:09:24,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:09:24,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155709806] [2024-06-28 04:09:24,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155709806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:09:24,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:09:24,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:09:24,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191510230] [2024-06-28 04:09:24,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:09:24,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:09:24,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:09:24,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:09:24,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:09:24,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:09:24,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 857 transitions, 15557 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 04:09:24,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:09:24,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:09:24,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:09:28,077 INFO L124 PetriNetUnfolderBase]: 4768/7719 cut-off events. [2024-06-28 04:09:28,078 INFO L125 PetriNetUnfolderBase]: For 682932/682942 co-relation queries the response was YES. [2024-06-28 04:09:28,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63547 conditions, 7719 events. 4768/7719 cut-off events. For 682932/682942 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 51569 event pairs, 914 based on Foata normal form. 11/7725 useless extension candidates. Maximal degree in co-relation 63344. Up to 6682 conditions per place. [2024-06-28 04:09:28,210 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 602 selfloop transitions, 291 changer transitions 0/898 dead transitions. [2024-06-28 04:09:28,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 898 transitions, 17883 flow [2024-06-28 04:09:28,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:09:28,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:09:28,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-28 04:09:28,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4155844155844156 [2024-06-28 04:09:28,211 INFO L175 Difference]: Start difference. First operand has 464 places, 857 transitions, 15557 flow. Second operand 11 states and 192 transitions. [2024-06-28 04:09:28,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 898 transitions, 17883 flow [2024-06-28 04:09:32,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 898 transitions, 17486 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 04:09:32,395 INFO L231 Difference]: Finished difference. Result has 467 places, 857 transitions, 15756 flow [2024-06-28 04:09:32,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=15164, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=857, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=291, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=566, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15756, PETRI_PLACES=467, PETRI_TRANSITIONS=857} [2024-06-28 04:09:32,396 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 424 predicate places. [2024-06-28 04:09:32,396 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 857 transitions, 15756 flow [2024-06-28 04:09:32,396 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 04:09:32,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:09:32,396 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 04:09:32,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 04:09:32,396 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 04:09:32,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:09:32,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1854860173, now seen corresponding path program 10 times [2024-06-28 04:09:32,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:09:32,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828394263] [2024-06-28 04:09:32,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:09:32,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:09:32,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:09:36,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:09:36,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:09:36,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828394263] [2024-06-28 04:09:36,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828394263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:09:36,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:09:36,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:09:36,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592578627] [2024-06-28 04:09:36,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:09:36,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:09:36,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:09:36,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:09:36,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:09:36,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:09:36,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 857 transitions, 15756 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 04:09:36,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:09:36,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:09:36,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:09:39,629 INFO L124 PetriNetUnfolderBase]: 4762/7702 cut-off events. [2024-06-28 04:09:39,630 INFO L125 PetriNetUnfolderBase]: For 681366/681376 co-relation queries the response was YES. [2024-06-28 04:09:39,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63559 conditions, 7702 events. 4762/7702 cut-off events. For 681366/681376 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 51473 event pairs, 1017 based on Foata normal form. 12/7709 useless extension candidates. Maximal degree in co-relation 63356. Up to 6828 conditions per place. [2024-06-28 04:09:39,758 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 700 selfloop transitions, 182 changer transitions 0/887 dead transitions. [2024-06-28 04:09:39,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 887 transitions, 18008 flow [2024-06-28 04:09:39,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 04:09:39,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 04:09:39,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-28 04:09:39,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4023809523809524 [2024-06-28 04:09:39,760 INFO L175 Difference]: Start difference. First operand has 467 places, 857 transitions, 15756 flow. Second operand 10 states and 169 transitions. [2024-06-28 04:09:39,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 887 transitions, 18008 flow [2024-06-28 04:09:44,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 887 transitions, 17451 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-28 04:09:44,272 INFO L231 Difference]: Finished difference. Result has 467 places, 857 transitions, 15577 flow [2024-06-28 04:09:44,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=15203, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=857, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=675, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15577, PETRI_PLACES=467, PETRI_TRANSITIONS=857} [2024-06-28 04:09:44,273 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 424 predicate places. [2024-06-28 04:09:44,273 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 857 transitions, 15577 flow [2024-06-28 04:09:44,273 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 04:09:44,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:09:44,273 INFO L208 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 04:09:44,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 04:09:44,274 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 04:09:44,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:09:44,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1851135523, now seen corresponding path program 11 times [2024-06-28 04:09:44,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:09:44,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800678647] [2024-06-28 04:09:44,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:09:44,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:09:44,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:09:47,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 04:09:47,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:09:47,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800678647] [2024-06-28 04:09:47,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800678647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:09:47,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:09:47,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:09:47,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073359244] [2024-06-28 04:09:47,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:09:47,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:09:47,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:09:47,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:09:47,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:09:47,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:09:47,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 857 transitions, 15577 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 04:09:47,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:09:47,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:09:47,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 04:09:50,920 INFO L124 PetriNetUnfolderBase]: 4772/7712 cut-off events. [2024-06-28 04:09:50,920 INFO L125 PetriNetUnfolderBase]: For 679727/679740 co-relation queries the response was YES. [2024-06-28 04:09:51,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63466 conditions, 7712 events. 4772/7712 cut-off events. For 679727/679740 co-relation queries the response was YES. Maximal size of possible extension queue 603. Compared 51511 event pairs, 1006 based on Foata normal form. 14/7723 useless extension candidates. Maximal degree in co-relation 63263. Up to 6986 conditions per place. [2024-06-28 04:09:51,045 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 750 selfloop transitions, 132 changer transitions 0/887 dead transitions. [2024-06-28 04:09:51,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 887 transitions, 17673 flow [2024-06-28 04:09:51,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 04:09:51,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 04:09:51,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-06-28 04:09:51,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3787878787878788 [2024-06-28 04:09:51,046 INFO L175 Difference]: Start difference. First operand has 467 places, 857 transitions, 15577 flow. Second operand 11 states and 175 transitions. [2024-06-28 04:09:51,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 887 transitions, 17673 flow [2024-06-28 04:09:55,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 887 transitions, 17226 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-28 04:09:55,271 INFO L231 Difference]: Finished difference. Result has 468 places, 860 transitions, 15475 flow [2024-06-28 04:09:55,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=15135, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=857, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=728, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15475, PETRI_PLACES=468, PETRI_TRANSITIONS=860} [2024-06-28 04:09:55,272 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 425 predicate places. [2024-06-28 04:09:55,272 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 860 transitions, 15475 flow [2024-06-28 04:09:55,273 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 04:09:55,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 04:09:55,273 INFO L208 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 04:09:55,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 04:09:55,273 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 04:09:55,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 04:09:55,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1851135709, now seen corresponding path program 14 times [2024-06-28 04:09:55,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 04:09:55,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771086891] [2024-06-28 04:09:55,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 04:09:55,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 04:09:55,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 04:09:58,816 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 04:09:58,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 04:09:58,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771086891] [2024-06-28 04:09:58,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771086891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 04:09:58,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 04:09:58,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 04:09:58,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510472814] [2024-06-28 04:09:58,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 04:09:58,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 04:09:58,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 04:09:58,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 04:09:58,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 04:09:58,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 42 [2024-06-28 04:09:58,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 860 transitions, 15475 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 04:09:58,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 04:09:58,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 42 [2024-06-28 04:09:58,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15